US3836976A - Closely spaced orthogonal dipole array - Google Patents

Closely spaced orthogonal dipole array Download PDF

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US3836976A
US3836976A US00352760A US35276073A US3836976A US 3836976 A US3836976 A US 3836976A US 00352760 A US00352760 A US 00352760A US 35276073 A US35276073 A US 35276073A US 3836976 A US3836976 A US 3836976A
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antenna
radiating elements
elements
pair
planar
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US00352760A
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J Ehrhardt
T Smith
G Monser
G Hardie
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Raytheon Co
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Raytheon Co
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/06—Details
    • H01Q9/065—Microstrip dipole antennas

Definitions

  • This invention relates generally to phased array antennas and more particularly to such antennas wherein the radiating elements thereof are comprised of a conducting metal deposited or printed on a substrate.
  • the invention also relates to phased array antennas of such nature which are adapted to transmit or receive radio frequency energy having any one of a variety of polarizations.
  • a radiating element which may operate with one of a variety of polarizations (i.e. linear, circular, elliptical).
  • One type of such a radiating element is sometimes referred to as a double-ridged horn.
  • a radiating element of such type has a vertical feed and an independent horizontal feed, the phase centers associated with the feeds being coincident.
  • the width of the horn be larger than M2 (where A is the nominal operating frequency of the antenna) and sometimes even up to the order of one wavelength (A).
  • a phased array antenna is generally comprised of a plurality of radiating elements. To attain a relatively wide scan angle, say in the order of 120, it is generally required that the phase centers of adjacent ones of the plurality of radiating elements be displaced by less than All It follows, therefore, that while a double-ridged horn is adapted to operate with radio frequency energy ofone ofa variety of polarizations. such a radiating element may not readily be used in a phased array antenna having a relatively wide bandwidth and relatively large scan angle.
  • radio frequency antennas are sometimes comprised of a radiating element formed from a conducting metal printed or deposited on a substrate. Such antennas have the advantage of lighter weight compared to waveguide antennas as a double-ridged horn.
  • known antennas having printed radiating elements are not generally adapted to transmit or receive radio frequency energy having any one of a variety of polarizations.
  • a phased array antenna 10 is shown to include a plurality, here five, of vertical radiating elements 12 12, arranged in a linear array, a pluraity, here five, of horizontal radiating elements 14 I4 arranged in a linear array, and a back-wall 15.
  • Back wall 15 is comprised of a single planar substrate of dielectirc material having a conducting material, here copper, deposited or printed by any conventional method to make the face portion 17 thereof a conventional ground plane for the radiating elements.
  • Each one of the vertical radiating elements l2 12 (as shown most clearly in the exploded view of radiating element 12 is identical in construction and includes a planar substrate 16 16 of dielectric material, a formed layer of conducting material, here copper, deposited or printed by any convenient method on a portion of one side of the planar substrate 16 16 and a feed line 18 18
  • the conducting material deposited on back wall I5 and the conducting material deposited on a portion of each one of the vertical radiating elements l2 12 are connected by a conventional solder joint (not numbered).
  • the formed layer of conducting material is symmetrically printed about center line 20 to produce an upper portion 22 of the conducting material separated from a lower portion 24 of the conducting material by a notch 26.
  • the notch 26 is flared from a narrow portion to a wide portion, here in one step.
  • the narrow portion has a width a and the wide portion has a width b.
  • a slot, not numbered, is formed within the substrate 26 along a portion of the center line 20, as shown, to permit alignment of the vertical radiating element 12,, with the horizontal radiating element 14
  • the feed line 18 here coaxial cable, is passed through back plate 15.
  • One portion of such cable is orthogonal to the plane of back plate 15 and a second portion of such cable is parallel to such back plate.
  • the former portion of the cable is displaced from the plane of the horizontal radiating elements by a dimension 0 and the second portion of such cable is displaced from the plane of back wall 15 by a dimension d.
  • feed line 18 is here a coaxial cable having its outer conductor connected by a conventional solderjoint (not numbered) to the upper portion 22 of the conducting material and its inner conductor connected, again as by a conventional solder joint (not numbered) to the lower portion 24 of the conducting material.
  • the dielectric sleeve, not numbered, of the coaxial cable 18 insulates the inner con ductor of the coaxial cable as such conductor passes across the narrow portion of notch 26.
  • each one of such horizontal radiating elements 14, 14, is made up of:
  • phased array antenna When assembled, the phased array antenna is a rigid unitary structure, the back wall serving as an integral part of such antenna as a conventional ground plane for both the horizontal radiating elements and the vertical radiating elements.
  • Adjacent ones of the horizontal radiating elements, although physically joined together, may be considered to be separate identical units, divided from each other along dotted lines 34 34
  • An exemplary one of such units, say 14 is shown in detail to have the layer of conducting material deposited thereon symmetrically about center line on a portion of substrate 30.
  • Aleft hand portion 36 of the conducting material is separated from a right hand portion 38 of the conducting material by a notch 40.
  • the notch 40 is flared from a narrow portion to a wide portion here in one step.
  • the narrow portion has'a width e and the wide portion has a width
  • Feed lines 32, 32 are here coaxial cables.
  • the outer conductor is soldered to the left hand portion 36 'of the conducting material and the inner conductor of such cable is soldered to the right hand portion 38 of the conducting material.
  • a sleeve, not numbered, of insulating material surrounds the inner conductor of such cable as such conductor passes across the narrow portion of the notch 40.
  • such feed line has one portion thereof orthogonal to the plane of back wall 15 and a second portion parallel to the back wall.
  • the former portion of the cable is displaced from the plane of the vertical radiating element disposed along its center line, here vertical radiating element 12,, by a dimension g and the second portion of such cable is displaced from the backwall 15 by a dimension [2.
  • radio frequency energy passes between free space and the wide portion of notches 26, 40 and such energy also passes between the narrow portion and the wide portion of such notches.
  • the radio frequency energy passing through the narrow portion of such notch in the vicinity where the inner conductor of feed lines 32 32 and l8 18 passes across such narrow portion is associated with a potential difference developed between the inner conductor and the outer conductor of such feed lines.
  • phase center associated with each one of the horizontal radiating elements 14 14 and each one of the vertical radiating elements 12, 12 will be substantially disposed along a line in the plane of the substrate 30 and parallel to the plane of back wall 15. Such line is indicated by dotted line 46. It follows then that by properly adjusting the relative amplitude and phase between the radio frequency energy on the bus represented by dotted line 42 and the radio frequency energy on the bus represented by the dotted line 28, thephased array antenna 10 may transmit or receive radio frequency energy having any one of a variety of polarizations.
  • the phased array antenna 10 has been built and found effective to match radio frequency energy to free space over'a 2:1 bandwidth and over a scan angle.
  • the parameters used were:
  • the notch may be flared from a narrow portion to a wide portion in other than one step, for example it may flare in more thanone step or it may flare according to a continuous function such as in linear function or in a parabolic function.
  • An antenna element comprising: a pair of planar radiating elements, one thereof disposed in a plane orthogonal to the other one thereof, the phase center of one of such planar radiating elements being separated from the phase center of the other one of such planar radiating elements by less than )t/4 (where )t is the operating wavelength of the antenna element), each one of such radiating elements including:
  • a planar sheet of conducting material having a flared notch formed therein, the feed line being coupled across such flared notch.
  • each one of such radiating elements includes:
  • the conducting material is deposited on a portion of such substrate, the flared notch formed therein having a narrow portion and a wide portion, the feed line being coupled across the narrow portion of such notch.
  • An antenna comprising: a linear array of antenna elements, each one thereof including: a pair of planar radiating elements, one of such pair of elements disposed in a plane orthogonal to the other one of such pair of elements, such pair of elements having phase centers coincident to less than M4 (where A is the operating wavelength of the antenna), each one of such radiating elements including:
  • a planar sheet of conducting material having a flared notch formed therein, the feed line being conv nected across such flared notch.
  • each one of the pair of planar radiating elements has one planar radiating element disposed in a common plane.
  • the antenna recited in claim 4 including addition ally a ground plane element common to the antenna elements and disposed orthogonal to each one of the pair of planar radiating elements.
  • each one of such planar radiating elements includes a planar substrate; and, wherein the conducting material is deposited on a portion of such substrate, the flared notch formed therein having a narrow portion and a wide portion, the feed line being coupled across the narrow portion of such notch.
  • each one of the pair of planar radiating elements has one of the pair of substrates disposed in a common plane.
  • the antenna recited in claim 7 including additionally a ground plane element common to the antenna elements and disposed orthogonally to each one of the pair of substrates of the radiating elements.

Abstract

A broadband phased array antenna is shown wherein pairs of mutually orthogonal printed radiating elements, each one of such elements having a flared notch formed therein, are adapted to transmit or receive radio frequency energy having any one of a variety of polarizations.

Description

United States Patent [191 Monser et al.
[ Sept. 17, 1974 CLOSELY SPACED ORTHOGONAL DIPOLE v ARRAY [75] Inventors: George J. Monser; George S.
Hardie; John R. Ehrhardt, Santa Barbara; Terry M. Smith, San Francisco, all of Calif.
[73] Assignee: Raytheon Company, Lexington,
Mass.
[22] Filed: Apr. 19, 1973 [21] Appl. No.: 352,760
[52] US. Cl 343/795, 343/797, 343/821 [51] Int. Cl. H0lq 9/28 [58] Field of Search 343/795, 797, 820, 821,
[56] References Cited UNITED STATES PATENTS 3,114,913 Alford 343/821 7/1970 Perrotti et al 343/822 7/1973 Evans 343/821 Primary ExaminerEli Lieberman Attorney, Agent, or Firm-Richard M. Sharkansky; Joseph D. Pannone; Philip J. McFarland [5 7] ABSTRACT A broadband phased array antenna is shown wherein pairs of mutually orthogonal printed radiating elements, each one of such elements having a flared notch formed therein, are adapted to transmit or receive radio frequency energy having any one of a variety of polarizations.
8 Claims, 1 Drawing Figure DESCRIPTION OF THE INVENTION This invention relates generally to phased array antennas and more particularly to such antennas wherein the radiating elements thereof are comprised of a conducting metal deposited or printed on a substrate. The invention also relates to phased array antennas of such nature which are adapted to transmit or receive radio frequency energy having any one of a variety of polarizations.
As is known in the art, it is frequently desirable to use a radiating element which may operate with one of a variety of polarizations (i.e. linear, circular, elliptical). One type of such a radiating element is sometimes referred to as a double-ridged horn. A radiating element of such type has a vertical feed and an independent horizontal feed, the phase centers associated with the feeds being coincident. In order to provide efficient matching to free space over a wide frequency variation or bandwidth, say in the order of 2:1, it is generally required that the width of the horn be larger than M2 (where A is the nominal operating frequency of the antenna) and sometimes even up to the order of one wavelength (A).
A phased array antenna is generally comprised of a plurality of radiating elements. To attain a relatively wide scan angle, say in the order of 120, it is generally required that the phase centers of adjacent ones of the plurality of radiating elements be displaced by less than All It follows, therefore, that while a double-ridged horn is adapted to operate with radio frequency energy ofone ofa variety of polarizations. such a radiating element may not readily be used in a phased array antenna having a relatively wide bandwidth and relatively large scan angle.
As is also known in the art, radio frequency antennas are sometimes comprised of a radiating element formed from a conducting metal printed or deposited on a substrate. Such antennas have the advantage of lighter weight compared to waveguide antennas as a double-ridged horn. However. known antennas having printed radiating elements are not generally adapted to transmit or receive radio frequency energy having any one of a variety of polarizations.
SUMMARY OF THE INVENTION With this background of the invention in mind, it is an object of this invention to provide an improved phased array antenna.
It is another object of the invention to provide an improved phased array antenna adapted to operate in one of a number of polarizations. I
These and other objects of the invention are attained generally by providing a pair of mutually orthogonal printed radiating elements, each one of such elements having a flared notch formed therein.
BRIEF DESCRIPTION OF THE DRAWINGS The foregoing features of this invention, as well as the invention itself, may be more fully understood from the following detailed description read together with the accompanying drawing, the single FIGURE of which shows an exploded, perspective view of a phased array antenna according to the invention.
DESCRIPTION OF THE PREFERRED v EMBODIMENT Referring now to the FIGURE, a phased array antenna 10 is shown to include a plurality, here five, of vertical radiating elements 12 12, arranged in a linear array, a pluraity, here five, of horizontal radiating elements 14 I4 arranged in a linear array, and a back-wall 15. Back wall 15 is comprised of a single planar substrate of dielectirc material having a conducting material, here copper, deposited or printed by any conventional method to make the face portion 17 thereof a conventional ground plane for the radiating elements.
Each one of the vertical radiating elements l2 12 (as shown most clearly in the exploded view of radiating element 12 is identical in construction and includes a planar substrate 16 16 of dielectric material, a formed layer of conducting material, here copper, deposited or printed by any convenient method on a portion of one side of the planar substrate 16 16 and a feed line 18 18 The conducting material deposited on back wall I5 and the conducting material deposited on a portion of each one of the vertical radiating elements l2 12 are connected by a conventional solder joint (not numbered).
Considering in detail an exemplary one of the vertical radiating elements, say vertical radiating element 12 it may be seen that the formed layer of conducting material is symmetrically printed about center line 20 to produce an upper portion 22 of the conducting material separated from a lower portion 24 of the conducting material by a notch 26. The notch 26 is flared from a narrow portion to a wide portion, here in one step. The narrow portion has a width a and the wide portion has a width b. A slot, not numbered, is formed within the substrate 26 along a portion of the center line 20, as shown, to permit alignment of the vertical radiating element 12,, with the horizontal radiating element 14 The feed line 18 here coaxial cable, is passed through back plate 15. One portion of such cable is orthogonal to the plane of back plate 15 and a second portion of such cable is parallel to such back plate. The former portion of the cable is displaced from the plane of the horizontal radiating elements by a dimension 0 and the second portion of such cable is displaced from the plane of back wall 15 by a dimension d.
Considering in detail an exemplary one of the feed lines 18 18,, say 18 such feed line is here a coaxial cable having its outer conductor connected by a conventional solderjoint (not numbered) to the upper portion 22 of the conducting material and its inner conductor connected, again as by a conventional solder joint (not numbered) to the lower portion 24 of the conducting material. The dielectric sleeve, not numbered, of the coaxial cable 18 insulates the inner con ductor of the coaxial cable as such conductor passes across the narrow portion of notch 26.
Referring now to the horizontal radiating elements I4 14 it is first noted that the individual ones of such elements are similar in construction to the vertical radiating elements; here, however, the horizontal radiating elements 14 14 are formed on a single planar substrate 30 of dielectric material. Each one of such horizontal radiating elements 14, 14,, is made up of:
a formed layer of conducting material, here copper, deposited or printed on a portion of one side of the planar substrate 30; and a feed line 32,- 32 The conducting material deposited on back wall 15 and the conducting material deposited on a portion of each one of the horizontal radiating elements are connected by a conventional solder joint (not numbered). When assembled, the phased array antenna is a rigid unitary structure, the back wall serving as an integral part of such antenna as a conventional ground plane for both the horizontal radiating elements and the vertical radiating elements.
Adjacent ones of the horizontal radiating elements, although physically joined together, may be considered to be separate identical units, divided from each other along dotted lines 34 34 An exemplary one of such units, say 14 is shown in detail to have the layer of conducting material deposited thereon symmetrically about center line on a portion of substrate 30. Aleft hand portion 36 of the conducting material is separated from a right hand portion 38 of the conducting material by a notch 40. The notch 40 is flared from a narrow portion to a wide portion here in one step. The narrow portion has'a width e and the wide portion has a width Feed lines 32, 32 are here coaxial cables. Considering in detail an exemplary one thereof, say 32 the outer conductor is soldered to the left hand portion 36 'of the conducting material and the inner conductor of such cable is soldered to the right hand portion 38 of the conducting material. A sleeve, not numbered, of insulating material surrounds the inner conductor of such cable as such conductor passes across the narrow portion of the notch 40. Considering exemplary feed line 32 such feed line has one portion thereof orthogonal to the plane of back wall 15 and a second portion parallel to the back wall. The former portion of the cable is displaced from the plane of the vertical radiating element disposed along its center line, here vertical radiating element 12,, by a dimension g and the second portion of such cable is displaced from the backwall 15 by a dimension [2.
When the phased array antenna 10 is operating in either the transmit mode or the receive mode, radio frequency energy passes between free space and the wide portion of notches 26, 40 and such energy also passes between the narrow portion and the wide portion of such notches. The radio frequency energy passing through the narrow portion of such notch in the vicinity where the inner conductor of feed lines 32 32 and l8 18 passes across such narrow portion is associated with a potential difference developed between the inner conductor and the outer conductor of such feed lines. It is noted that when feed lines l8 18 are connected to a suitable bus, here represented by dotted line 28, the vertical radiating elements 12, 12;, act as a vertically polarized antenna and likewise, when feed lines 32 32 are connected to a suitable bus, here represented by dotted line 42, the horizontal radiating elements act as a horizontally polarized antenna. The relative phase shift of the radio frequency energy, between adjacent feed lines, defines the scan angle of the antenna in a conventional manner. Such phase shift may be provided by convential phase shifters (not shown). It is further noted that by having the center conductors of the coaxial cables passing across the narrow portion of each one of the notches substantially coincident electrically, the phase center associated with each one of the horizontal radiating elements 14 14 and each one of the vertical radiating elements 12, 12 will be substantially disposed along a line in the plane of the substrate 30 and parallel to the plane of back wall 15. Such line is indicated by dotted line 46. It follows then that by properly adjusting the relative amplitude and phase between the radio frequency energy on the bus represented by dotted line 42 and the radio frequency energy on the bus represented by the dotted line 28, thephased array antenna 10 may transmit or receive radio frequency energy having any one of a variety of polarizations.
The phased array antenna 10 has been built and found effective to match radio frequency energy to free space over'a 2:1 bandwidth and over a scan angle. The parameters used were:
Dimension a 0.] inches Dimension b 0.5 inches Dimension c 0.625 inches Dimension d 0.65 inches Dimension e 0.] inches Dimension f= 0.5 inches Dimension g 0.425 inches Dimension 11 0.475 inches Height of Vertical Radiating Element 2.40 inches coaxial cable. Also, the notch may be flared from a narrow portion to a wide portion in other than one step, for example it may flare in more thanone step or it may flare according to a continuous function such as in linear function or in a parabolic function.
It is felt, therefore, that this invention should not be restricted to its disclosed embodiment but rather should be limited only by the spirit and scope of the appended claims.
What is claimed is:
I. An antenna element comprising: a pair of planar radiating elements, one thereof disposed in a plane orthogonal to the other one thereof, the phase center of one of such planar radiating elements being separated from the phase center of the other one of such planar radiating elements by less than )t/4 (where )t is the operating wavelength of the antenna element), each one of such radiating elements including:
a. a radio frequency feed line; and,
b. a planar sheet of conducting material having a flared notch formed therein, the feed line being coupled across such flared notch.
2. The antenna element recited in claim 1 wherein each one of such radiating elements includes:
a planar substrate; and-wherein the conducting material is deposited on a portion of such substrate, the flared notch formed therein having a narrow portion and a wide portion, the feed line being coupled across the narrow portion of such notch.
3. An antenna comprising: a linear array of antenna elements, each one thereof including: a pair of planar radiating elements, one of such pair of elements disposed in a plane orthogonal to the other one of such pair of elements, such pair of elements having phase centers coincident to less than M4 (where A is the operating wavelength of the antenna), each one of such radiating elements including:
a. a radio frequency feed line; and,
a planar sheet of conducting material having a flared notch formed therein, the feed line being conv nected across such flared notch.
4. The antenna recited in claim 3 wherein each one of the pair of planar radiating elements has one planar radiating element disposed in a common plane.
5. The antenna recited in claim 4 including addition ally a ground plane element common to the antenna elements and disposed orthogonal to each one of the pair of planar radiating elements.
6. The antenna recited in claim 3 wherein each one of such planar radiating elements includes a planar substrate; and, wherein the conducting material is deposited on a portion of such substrate, the flared notch formed therein having a narrow portion and a wide portion, the feed line being coupled across the narrow portion of such notch.
7. The antenna recited in claim 6 wherein each one of the pair of planar radiating elements has one of the pair of substrates disposed in a common plane.
8. The antenna recited in claim 7 including additionally a ground plane element common to the antenna elements and disposed orthogonally to each one of the pair of substrates of the radiating elements.

Claims (8)

1. An antenna element comprising: a pair of planar radiating elements, one thereof disposed in a plane orthogonal to the other one thereof, the phase center of one of such planar radiating elements being separated from the phase center of the other one of such planar radiating elements by less than lambda /4 (where lambda is the operating wavelength of the antenna element), each one of such radiating elements including: a. a radio frequency feed line; and, b. a planar sheet of conducting material having a flared notch formed therein, the feed line being coupled across such flared notch.
2. The antenna element recited in claim 1 wherein each one of such radiating elements includes: a planar substrate; and wherein the conducting material is deposited on a portion of such substrate, the flared notch formed therein having a narrow portion and a wide portion, the feed line being coupled across the narrow portion of such notch.
3. An antenna comprising: a linear array of antenna elements, each one thereof including: a pair of planar radiating elements, one of such pair of elements disposed in a plane orthogonal to the other one of such pair of elements, such pair of elements having phase centers coincident to less than lambda /4 (where lambda is the operating wavelength of the antenna), each one of such radiating elements including: a. a radio frequency feed line; and, a planar sheet of conducting material having a flared notch formed therein, the feed line being connected across such flared notch.
4. The antenna recited in claim 3 wherein each one of the pair of planar radiating elements has one planar radiating element disposed in a common plane.
5. The antenna recited in claim 4 including additionally a ground plane element common to the antenna elements and disposed orthogonal to each one of the pair of planar radiating elements.
6. The antenna recited in claim 3 wherein each one of such planar radiating elements includes a planar substrate; and, wherein the conducting material is deposited on a portion of such substrate, the flared notch formed therein having a Narrow portion and a wide portion, the feed line being coupled across the narrow portion of such notch.
7. The antenna recited in claim 6 wherein each one of the pair of planar radiating elements has one of the pair of substrates disposed in a common plane.
8. The antenna recited in claim 7 including additionally a ground plane element common to the antenna elements and disposed orthogonally to each one of the pair of substrates of the radiating elements.
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Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4001834A (en) * 1975-04-08 1977-01-04 Aeronutronic Ford Corporation Printed wiring antenna and arrays fabricated thereof
US4114163A (en) * 1976-12-06 1978-09-12 The United States Of America As Represented By The Secretary Of The Army L-band radar antenna array
DE2753661A1 (en) * 1977-12-02 1979-06-07 Philips Patentverwaltung Notch aerial with two orthogonal excitation elements - formed as recesses and/or frames with one supplied directly and other via phase adjuster
US4287518A (en) * 1980-04-30 1981-09-01 Nasa Cavity-backed, micro-strip dipole antenna array
DE3215323A1 (en) * 1982-01-23 1983-07-28 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Antenna in the form of a slotted line
FR2538624A1 (en) * 1982-12-23 1984-06-29 Thomson Csf Radiating source with open cavity and controlled polarisation and array antenna containing such sources.
DE3334844A1 (en) * 1982-09-30 1984-07-26 General Electric Co., Schenectady, N.Y. MICROSTRIP LADDER GROOVE ANTENNA
US4509055A (en) * 1982-09-30 1985-04-02 Raytheon Company Blockage-free space fed antenna
US4686536A (en) * 1985-08-15 1987-08-11 Canadian Marconi Company Crossed-drooping dipole antenna
US4978965A (en) * 1989-04-11 1990-12-18 Itt Corporation Broadband dual-polarized frameless radiating element
EP0406563A1 (en) * 1989-07-06 1991-01-09 Ball Corporation Broadband microstrip-fed antenna
US5185611A (en) * 1991-07-18 1993-02-09 Motorola, Inc. Compact antenna array for diversity applications
US5208602A (en) * 1990-03-12 1993-05-04 Raytheon Company Cavity backed dipole antenna
US5268701A (en) * 1992-03-23 1993-12-07 Raytheon Company Radio frequency antenna
US5519408A (en) * 1991-01-22 1996-05-21 Us Air Force Tapered notch antenna using coplanar waveguide
WO1997022159A1 (en) * 1995-12-14 1997-06-19 Electromagnetic Sciences, Inc. Dual polarized array antenna with central polarization control
US5644321A (en) * 1993-01-12 1997-07-01 Benham; Glynda O. Multi-element antenna with tapered resistive loading in each element
FR2753568A1 (en) * 1996-09-19 1998-03-20 Dassault Electronique VERSATILE NETWORK ANTENNA
US5786792A (en) * 1994-06-13 1998-07-28 Northrop Grumman Corporation Antenna array panel structure
US5825333A (en) * 1992-03-05 1998-10-20 Honda Giken Kogyo Kabushiki Kaisha Offset multibeam antenna
US5943025A (en) * 1995-02-06 1999-08-24 Megawave Corporation Television antennas
US5959586A (en) * 1995-02-06 1999-09-28 Megawave Corporation Sheet antenna with tapered resistivity
US6031504A (en) * 1998-06-10 2000-02-29 Mcewan; Thomas E. Broadband antenna pair with low mutual coupling
US6054955A (en) * 1993-08-23 2000-04-25 Apple Computer, Inc. Folded monopole antenna for use with portable communications devices
US6552691B2 (en) 2001-05-31 2003-04-22 Itt Manufacturing Enterprises Broadband dual-polarized microstrip notch antenna
US20040217912A1 (en) * 2003-04-25 2004-11-04 Mohammadian Alireza Hormoz Electromagnetically coupled end-fed elliptical dipole for ultra-wide band systems
US20050007286A1 (en) * 2003-07-11 2005-01-13 Trott Keith D. Wideband phased array radiator
US20060038732A1 (en) * 2003-07-11 2006-02-23 Deluca Mark R Broadband dual polarized slotline feed circuit
US20060082515A1 (en) * 2004-10-15 2006-04-20 Petropoulos Anthanasios G Wideband omnidirectional antenna
GB2419468A (en) * 2004-10-21 2006-04-26 Boeing Co Conformal antenna array formed on intersecting walls of a honeycomb structure and a method of making such an antenna array
US20060097945A1 (en) * 2004-10-21 2006-05-11 Mccarville Douglas A Structurally integrated antenna aperture and fabrication method
US20060097947A1 (en) * 2004-10-21 2006-05-11 Mccarville Douglas A Structurally integrated phased array antenna aperture design and fabrication method
US20060097944A1 (en) * 2004-10-21 2006-05-11 Mccarville Douglas A Design and fabrication methodology for a phased array antenna with shielded/integrated structure
US20070229364A1 (en) * 2006-03-31 2007-10-04 Atheros Communications, Inc. Multiple Antennas Having Good Isolation Disposed In A Limited Space
US20080135805A1 (en) * 2004-08-12 2008-06-12 Fabienne Cuesta Fluorescent Pigments for Coating Compositions
US20080150823A1 (en) * 2004-11-29 2008-06-26 Alireza Hormoz Mohammadian Compact antennas for ultra wide band applications
WO2008076641A1 (en) * 2006-12-21 2008-06-26 Raytheon Company Polarization control system and method for an antenna array
US7683847B2 (en) 2005-11-23 2010-03-23 Selex Sensors And Airborne Systems Limited Antennas
US20100141527A1 (en) * 2008-10-31 2010-06-10 Farzin Lalezari Orthogonal linear transmit receive array radar
US20100253579A1 (en) * 2006-06-30 2010-10-07 Byung Hoon Ryou Antenna with 3-D Configuration
US20110148725A1 (en) * 2009-12-22 2011-06-23 Raytheon Company Methods and apparatus for coincident phase center broadband radiator
US8106846B2 (en) 2009-05-01 2012-01-31 Applied Wireless Identifications Group, Inc. Compact circular polarized antenna
US20130099988A1 (en) * 2010-07-19 2013-04-25 Bae Systems Plc Antenna
US8466846B1 (en) * 2010-09-29 2013-06-18 Rockwell Collins, Inc. Ultra wide band balanced antipodal tapered slot antenna and array with edge treatment
US8618998B2 (en) 2009-07-21 2013-12-31 Applied Wireless Identifications Group, Inc. Compact circular polarized antenna with cavity for additional devices
US8736504B1 (en) * 2010-09-29 2014-05-27 Rockwell Collins, Inc. Phase center coincident, dual-polarization BAVA radiating elements for UWB ESA apertures
US9142889B2 (en) 2010-02-02 2015-09-22 Technion Research & Development Foundation Ltd. Compact tapered slot antenna
US9270027B2 (en) 2013-02-04 2016-02-23 Sensor And Antenna Systems, Lansdale, Inc. Notch-antenna array and method for making same
US9325075B1 (en) * 2012-05-25 2016-04-26 Lockheed Martin Corporation Antennae formed using integrated subarrays
US20170033471A1 (en) * 2015-07-30 2017-02-02 Wistron Neweb Corp. Antenna System

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114913A (en) * 1961-07-10 1963-12-17 Andrew Alford Wing type dipole antenna with u-shaped director
US3681769A (en) * 1970-07-30 1972-08-01 Itt Dual polarized printed circuit dipole antenna array
US3750185A (en) * 1972-01-18 1973-07-31 Westinghouse Electric Corp Dipole antenna array

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114913A (en) * 1961-07-10 1963-12-17 Andrew Alford Wing type dipole antenna with u-shaped director
US3681769A (en) * 1970-07-30 1972-08-01 Itt Dual polarized printed circuit dipole antenna array
US3750185A (en) * 1972-01-18 1973-07-31 Westinghouse Electric Corp Dipole antenna array

Cited By (73)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4001834A (en) * 1975-04-08 1977-01-04 Aeronutronic Ford Corporation Printed wiring antenna and arrays fabricated thereof
US4114163A (en) * 1976-12-06 1978-09-12 The United States Of America As Represented By The Secretary Of The Army L-band radar antenna array
DE2753661A1 (en) * 1977-12-02 1979-06-07 Philips Patentverwaltung Notch aerial with two orthogonal excitation elements - formed as recesses and/or frames with one supplied directly and other via phase adjuster
US4287518A (en) * 1980-04-30 1981-09-01 Nasa Cavity-backed, micro-strip dipole antenna array
DE3215323A1 (en) * 1982-01-23 1983-07-28 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Antenna in the form of a slotted line
US4509055A (en) * 1982-09-30 1985-04-02 Raytheon Company Blockage-free space fed antenna
DE3334844A1 (en) * 1982-09-30 1984-07-26 General Electric Co., Schenectady, N.Y. MICROSTRIP LADDER GROOVE ANTENNA
US4500887A (en) * 1982-09-30 1985-02-19 General Electric Company Microstrip notch antenna
FR2538624A1 (en) * 1982-12-23 1984-06-29 Thomson Csf Radiating source with open cavity and controlled polarisation and array antenna containing such sources.
US4686536A (en) * 1985-08-15 1987-08-11 Canadian Marconi Company Crossed-drooping dipole antenna
US4978965A (en) * 1989-04-11 1990-12-18 Itt Corporation Broadband dual-polarized frameless radiating element
EP0406563A1 (en) * 1989-07-06 1991-01-09 Ball Corporation Broadband microstrip-fed antenna
US5070340A (en) * 1989-07-06 1991-12-03 Ball Corporation Broadband microstrip-fed antenna
US5208602A (en) * 1990-03-12 1993-05-04 Raytheon Company Cavity backed dipole antenna
US5519408A (en) * 1991-01-22 1996-05-21 Us Air Force Tapered notch antenna using coplanar waveguide
US5185611A (en) * 1991-07-18 1993-02-09 Motorola, Inc. Compact antenna array for diversity applications
US5825333A (en) * 1992-03-05 1998-10-20 Honda Giken Kogyo Kabushiki Kaisha Offset multibeam antenna
US5268701A (en) * 1992-03-23 1993-12-07 Raytheon Company Radio frequency antenna
US5644321A (en) * 1993-01-12 1997-07-01 Benham; Glynda O. Multi-element antenna with tapered resistive loading in each element
US6054955A (en) * 1993-08-23 2000-04-25 Apple Computer, Inc. Folded monopole antenna for use with portable communications devices
US5786792A (en) * 1994-06-13 1998-07-28 Northrop Grumman Corporation Antenna array panel structure
US5943025A (en) * 1995-02-06 1999-08-24 Megawave Corporation Television antennas
US5959586A (en) * 1995-02-06 1999-09-28 Megawave Corporation Sheet antenna with tapered resistivity
WO1997022159A1 (en) * 1995-12-14 1997-06-19 Electromagnetic Sciences, Inc. Dual polarized array antenna with central polarization control
US5966102A (en) * 1995-12-14 1999-10-12 Ems Technologies, Inc. Dual polarized array antenna with central polarization control
US6067053A (en) * 1995-12-14 2000-05-23 Ems Technologies, Inc. Dual polarized array antenna
FR2753568A1 (en) * 1996-09-19 1998-03-20 Dassault Electronique VERSATILE NETWORK ANTENNA
EP0831550A1 (en) * 1996-09-19 1998-03-25 Dassault Electronique Versatile array antenna
US6031504A (en) * 1998-06-10 2000-02-29 Mcewan; Thomas E. Broadband antenna pair with low mutual coupling
US6552691B2 (en) 2001-05-31 2003-04-22 Itt Manufacturing Enterprises Broadband dual-polarized microstrip notch antenna
US20040217912A1 (en) * 2003-04-25 2004-11-04 Mohammadian Alireza Hormoz Electromagnetically coupled end-fed elliptical dipole for ultra-wide band systems
US7973733B2 (en) * 2003-04-25 2011-07-05 Qualcomm Incorporated Electromagnetically coupled end-fed elliptical dipole for ultra-wide band systems
US20050007286A1 (en) * 2003-07-11 2005-01-13 Trott Keith D. Wideband phased array radiator
US20060038732A1 (en) * 2003-07-11 2006-02-23 Deluca Mark R Broadband dual polarized slotline feed circuit
US7180457B2 (en) 2003-07-11 2007-02-20 Raytheon Company Wideband phased array radiator
US20080135805A1 (en) * 2004-08-12 2008-06-12 Fabienne Cuesta Fluorescent Pigments for Coating Compositions
US20060082515A1 (en) * 2004-10-15 2006-04-20 Petropoulos Anthanasios G Wideband omnidirectional antenna
US7180461B2 (en) * 2004-10-15 2007-02-20 Cushcraft Corporation Wideband omnidirectional antenna
US20060097947A1 (en) * 2004-10-21 2006-05-11 Mccarville Douglas A Structurally integrated phased array antenna aperture design and fabrication method
US20060097945A1 (en) * 2004-10-21 2006-05-11 Mccarville Douglas A Structurally integrated antenna aperture and fabrication method
US7109943B2 (en) * 2004-10-21 2006-09-19 The Boeing Company Structurally integrated antenna aperture and fabrication method
US7046209B1 (en) * 2004-10-21 2006-05-16 The Boeing Company Design and fabrication methodology for a phased array antenna with shielded/integrated feed structure
US20060097944A1 (en) * 2004-10-21 2006-05-11 Mccarville Douglas A Design and fabrication methodology for a phased array antenna with shielded/integrated structure
GB2419468B (en) * 2004-10-21 2007-03-21 Boeing Co Design and fabrication methodology for a phased array antenna with integrated feed structure-conformal load-bearing concept
GB2419468A (en) * 2004-10-21 2006-04-26 Boeing Co Conformal antenna array formed on intersecting walls of a honeycomb structure and a method of making such an antenna array
US7109942B2 (en) * 2004-10-21 2006-09-19 The Boeing Company Structurally integrated phased array antenna aperture design and fabrication method
US20080150823A1 (en) * 2004-11-29 2008-06-26 Alireza Hormoz Mohammadian Compact antennas for ultra wide band applications
US8059054B2 (en) 2004-11-29 2011-11-15 Qualcomm, Incorporated Compact antennas for ultra wide band applications
US7683847B2 (en) 2005-11-23 2010-03-23 Selex Sensors And Airborne Systems Limited Antennas
US9024819B2 (en) * 2006-03-31 2015-05-05 Qualcomm Incorporated Multiple antennas having good isolation disposed in a limited space
US20070229364A1 (en) * 2006-03-31 2007-10-04 Atheros Communications, Inc. Multiple Antennas Having Good Isolation Disposed In A Limited Space
US20100253579A1 (en) * 2006-06-30 2010-10-07 Byung Hoon Ryou Antenna with 3-D Configuration
WO2008076641A1 (en) * 2006-12-21 2008-06-26 Raytheon Company Polarization control system and method for an antenna array
US7460077B2 (en) 2006-12-21 2008-12-02 Raytheon Company Polarization control system and method for an antenna array
EP2913894A1 (en) * 2006-12-21 2015-09-02 Raytheon Company Polarization control system and method for an antenna array
US20080150799A1 (en) * 2006-12-21 2008-06-26 Hemmi Christian O Polarization Control System and Method for an Antenna Array
US20100141527A1 (en) * 2008-10-31 2010-06-10 Farzin Lalezari Orthogonal linear transmit receive array radar
US8248298B2 (en) * 2008-10-31 2012-08-21 First Rf Corporation Orthogonal linear transmit receive array radar
US8106846B2 (en) 2009-05-01 2012-01-31 Applied Wireless Identifications Group, Inc. Compact circular polarized antenna
US8618998B2 (en) 2009-07-21 2013-12-31 Applied Wireless Identifications Group, Inc. Compact circular polarized antenna with cavity for additional devices
US8325099B2 (en) 2009-12-22 2012-12-04 Raytheon Company Methods and apparatus for coincident phase center broadband radiator
US20110148725A1 (en) * 2009-12-22 2011-06-23 Raytheon Company Methods and apparatus for coincident phase center broadband radiator
US9142889B2 (en) 2010-02-02 2015-09-22 Technion Research & Development Foundation Ltd. Compact tapered slot antenna
US9054427B2 (en) * 2010-07-19 2015-06-09 Bae Systems Plc Planar Vivaldi antenna array
US20130099988A1 (en) * 2010-07-19 2013-04-25 Bae Systems Plc Antenna
US9024834B1 (en) * 2010-09-29 2015-05-05 Rockwell Collins, Inc. Ultra wide band balanced antipodal tapered slot antenna and array with edge treatment
US8736504B1 (en) * 2010-09-29 2014-05-27 Rockwell Collins, Inc. Phase center coincident, dual-polarization BAVA radiating elements for UWB ESA apertures
US8466846B1 (en) * 2010-09-29 2013-06-18 Rockwell Collins, Inc. Ultra wide band balanced antipodal tapered slot antenna and array with edge treatment
US9455500B1 (en) 2010-09-29 2016-09-27 Rockwell Collins, Inc. Phase center coincident, dual-polarization BAVA radiating elements for UWB ESA apertures
US9325075B1 (en) * 2012-05-25 2016-04-26 Lockheed Martin Corporation Antennae formed using integrated subarrays
US9270027B2 (en) 2013-02-04 2016-02-23 Sensor And Antenna Systems, Lansdale, Inc. Notch-antenna array and method for making same
US20170033471A1 (en) * 2015-07-30 2017-02-02 Wistron Neweb Corp. Antenna System
US9799963B2 (en) * 2015-07-30 2017-10-24 Wistron Neweb Corp. Antenna system

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