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Publication numberUS3381371 A
Publication typeGrant
Publication dateMay 7, 1968
Filing dateSep 27, 1965
Priority dateSep 27, 1965
Publication numberUS 3381371 A, US 3381371A, US-A-3381371, US3381371 A, US3381371A
InventorsRussell Earl D
Original AssigneeSanders Associates Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Method of constructing lightweight antenna
US 3381371 A
Abstract  available in
Images(2)
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Claims  available in
Description  (OCR text may contain errors)

May 7, 1968 E. D. RUSSELL METHOD OF CONSTRUCTING LIGHTWEIGHT ANTENNA 2 Sheets-Sheet 1 Filed Sept. 27, 1965 Earl D. Russell ATTORNEY y 7, 1968 E. D. RUSSELL 3,381,371

METHOD OF CONSTRUCTING LIGHTWEIGHT ANTENNA Filed Sept. 27, 1965 2 Sheets-Sheet 2 Figure 4A Earl D, Russell INVENTOR BY M D/M ATTORNEY United States Patent METHOD OF CONSTRUCTING LIGHTWEIGHT This invention relates to an improved method of constructing an antenna and is a continuation in part of my earlier filed application Ser. No. 160,451, entitled Lightweight Spiral Antenna, filed Dec. 19, 1961, now abandoned. More specifically, it relates to a method of constructing an antenna having a strip-like radiating element spaced from a reflecting surface that is formed on a dielectric support. The support is cast of a foam material and painted with a conducting paint to form the reflecting surface. The construction is substantially simpler than prior techniques and provides a lightweight antenna readily fabricated at low cost.

Antennas often have conducting surfaces spaced behind the radiating elements to reflect signals and thus form directional radiation patterns. Prior antenna constructions of this type require rigid, self-supporting reflectors, fabricated from sheet metal or castings, and, accordingly, they are heavy and bulky. In addition, the prior constructions are costly, since they require several fabricating operations. Furthermore, relatively bulky fastening devices are required to secure the heavy reflector to the assembly.

Accordingly, it is a principal object of the present invention to provide an improved method of constructing an antenna having a reflecting surface spaced from the radiating element.

A more specific object is to provide a method of constructing a directional antenna having a substantially plane radiating element, that is substantially less costly and light in weight than prior antennas of this type.

Other objects of the invention will in part be obvious and will in part appear hereinafter.

The invention accordingly comprises the several steps and the relation of one or more of such steps with respect to each of the others to form the article possessing the features, properties and the relation of elements, which are exemplified in the following detailed disclosure, and the scope of the invention will be indicated in the claims.

For a fuller understanding of the nature and objects of the invention, reference should be had to the following detailed description taken in connection with the accompanying drawings, in which:

FIGURE 1 is a top plan view partly broken away of an antenna constructed in accordance with the present invention.

FIGURE 2 is a sectional view taken on the line 2-2 of FIGURE 1,

FIGURE 3 is a sectional view similar to FIGURE 2, of another embodiment of an antenna constructed in accordance with the present invention,

FIGURE 4 is a sectional view of a mold utilized in the construction of the antenna shown in FIGURES 1 and 2, and

FIGURE 4A is an enlarged portion of a section of the mold shown in FIGURE 4, illustrating the various layers of materials utilized in the present invention.

In general, the present antenna construction features a rigid, light-weight insulator that is painted with a conducting film and mounted behind a radiating element. The film reflects signals so that the antenna radiates a directional pattern.

3,381,371 Patented May 7, 1968 ice The insulator is preferably a foamed material, cast in a mold which is coated with the conducting film and secured to the radiating element. When the mold is removed, the film adheres to the hardened insulator. In this manner, the reflector is fabricated in the desired shape and secured to the radiating element in a single operation to provide a low-cost, light-weight antenna.

Referring to FIGS. 1 and 2, the antenna has a substantially flat radiating element 10, such as a double Archimedean spiral, energized by means of a coaxial feed cable 12 having a conductor connected to each of the spirals 10a and 10b. A reflector 14 is supported by a substantially rigid insulator 16 secured to a dielectric board or sheet 18, to which the spirals: 10a and 1% are bonded. A conducting sleeve 20 ensures a good electrical connection between the reflector 14 and the outer condoctor 12a of the cable 12.

The insulator 16, preferably a cylinder made of lightweight dielectric foam, effectively supports the reflector 14 at the desired distance from the radiating element 10, so that the antenna radiates in a predetermined directional pattern.

The antenna is preferably constructed by forming the Archimedean spirals 10a and 10b of thin high-conductivity metal on one or both sides of the dielectric board 18, using, for example, printed circuit techniques. The radiating element can also be an equiangular element or other type of broad band radiator of which log periodic is a type.

The feed cable 12 is then connected to the radiating element through a hole 18a (FIG. 2) formed in the board 18. With the double Archimedean spiral shown, the coaxial inner conductor 12b is connected to the spiral 10a, and the outer conductor 12a is connected to the spiral 101;. It is apparent that a waveguide or strip transmission line feed system can be used instead of the coaxial line shown.

The insulator 16 is preferably made of a dielectric foam cast in a mold 11 (FIG. 4) having a cavity 13 with the desired shape for the insulator and an aperture 15 for the cable 12. The mold is coated with a mold release agent 17 and then with a conducting paint 19 such as a silver-epoxy. The cable 12 is then secured to the board 18 and the latter is secured to the mold, e.g., by clamps, and the insulator 16 foamed in place according to wellknown techniques, for example, by adding a suitable catalyst to the dielectric material before closing the mold. The material preferably has a low dielectric constant and forms a unicellular foam. A suitable material is phenolic or epoxy foam. As the foam hardens, it adheres to the conducting paint, which serves as the reflector 14. It also adheres to the board 18 to form a unitary structure of the entire assembly. The feed cable 12 may be anchored within the insulator, as shown, prior to foaming of the insulator 16.

The aperture that accommodates the conducting sleeve 20 may be molded in place or formed after the mold has been removed. The assembly of the antenna is then completed by securing the sleeve in place. Alternatively, the sleeve 20 may be inserted into the mold after the release agent is applied and before the application of the conducting paint, as shown in FIGS. 4 and 4A. The paint then adheres to the sleeve to form an efficient connection thereto. A suitable coating, indicated by the dashed line 21, may be applied to protect the reflector 14 after the unit is removed from the mold.

As shown in FIGS. 1 and 2, the insulator 16 is preferably a solid right cylinder, and the electrical distance between the element 10 and the reflector portion 14a parallel to the element, is preferably a quarter-wavelength at the geometric mean of the design frequency. This spacing generally provides the optimum combination of antenna radiation pattern and impedance. The connection between the feed cable outer conductor 12a and the reflector 14 maintains the reflector at substantially ground potential.

Using the foregoing process, the antenna can be con structed with low-cost materials, and its size and weight are substantially reduced as compared to similar antennas constructed according to prior techniques. For example, .an S-band antenna, operating between 2 and 4 kmc., is 80% lighter than a similar prior antenna having a cast aluminum reflector.

In addition, the reflector 14 is fabricated and secured in place in substantially a single process, whereas the prior construction required the machining of a casting and securing it to the dielectric board 18.

Referring now to FIG. 3, according to an alternative construction, the reflector 14 is formed on a can-shaped insulator 22 secured with suitable adhesive 23 to the dielectric board 18. A conducting fillet 24 of solder or the like connects the reflector 14 to the feed cable outer conductor 12a.

More specifically, the insulator 22 is preferably cast in the desired shape using, for example, a phenolic material. The reflector 14 may be formed on either the inside or the outside of the insulator by painting the insulator or a mold, which is not shown but which is similar to mold 11, with a silver or other conducting epoxy. The feed cable 12 is then fed through the insulator 22 and secured to the radiating elements 10a and 10!) by soldering, for example. The adhesive 23, a low-loss epoxy or other cement, fastens the dielectric board 18 to the support and the conducting fillet 24 is then formed between the outer conductor 12a and the reflector 14. A protective film, shown dotted at 26, is preferably sprayed over the reflector 14 on the outside of the insulator 22.

The intenna constructed with the hollow cylindrical insulator 22 is even lighter than the antenna described above with reference to FIGS. 1 and 2, in addition to retaining its small size and low cost. It will be apparent that the radiating element and associated surface of the dielectric board may have a surface shape other than planar. For example, the surface may be conical with the apex of the cone pointing away from the reflector.

It will thus be seen that the objects set forth above,

among those made apparent from the preceding description, are efficiently attained and, since certain changes may be made in carrying out the above method and in the constructions set forth without departing from the scope of the invention, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

What is claimed is:

1. A process for constructing an antenna having a radiating clement, said process comprising the steps of securing said radiating element to a dielectric board, securing to said dielectric board a dielectric support projecting substantially transverse to the plane thereof by casting a dielectric foam in a mold having a cavity closed by said dielectric board, and forming a thin conductor on said dielectric support to reflect electromagnetic signals radiated by said element.

2. A process for constructing an antenna comprising the steps of fabricating a strip-like radiating element on a dielectric sheet, electrically connecting a feed system to said radiating element, coating a mold cavity having a substantially cylindrical configuration with a release agent and then with a conducting epoxy, closing said cavity with said sheet, said feed system extending axially through said cavity, casting a solid cylinder of dielectric foam in said mold cavity and permitting the same to harden therein, whereby said hardened foam adheres to said dielectric sheet and said epoxy, removing said cylinder from said mold cavity, and connecting said epoxy to a conductor of said feed system.

References Cited UNITED STATES PATENTS 2,863,145 12/ 1958 Turner 343-895 X 3,049,711 8/1962 Hooper 34389 X 3,131,394 4/1964 Wheeler 343-895 3,143,770 8/1964 Jeske 26445 X 3,169,311 2/1965 Small et al 343-912 X CHARLIE T. MOON, Primary Examiner.

R. W. CHURCH, Assistant Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2863145 *Oct 19, 1955Dec 2, 1958Turner Edwin MSpiral slot antenna
US3049711 *Nov 12, 1958Aug 14, 1962Packard Bell Electronics CorpOmni-directional portable antenna
US3131394 *Jan 22, 1962Apr 28, 1964Wheeler Myron SSpiral antenna with spiral reflecting cavity
US3143770 *Dec 5, 1962Aug 11, 1964Formax Mfg CorpMolding apparatus for sanding pad assembly
US3169311 *Jun 28, 1961Feb 16, 1965Jensen Jack HMethod of making a dish-shaped antenna reflector
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3717877 *Feb 27, 1970Feb 20, 1973Sanders Associates IncCavity backed spiral antenna
US3723590 *Mar 31, 1971Mar 27, 1973Corning Glass WorksMethod for terminating an electrical component
US3735409 *Feb 22, 1972May 22, 1973E Systems IncElectromagnetic wave receiver
US3744128 *Feb 12, 1971Jul 10, 1973NasaProcess for making r. f. shielded cable connector assemblies and the products formed thereby
US4609888 *Oct 2, 1980Sep 2, 1986The United States Of America As Represented By The Secretary Of The NavyDirection finding antenna interface
US5134422 *Nov 29, 1988Jul 28, 1992Centre National D'etudes SpatialesHelical type antenna and manufacturing method thereof
US5588198 *Mar 6, 1995Dec 31, 1996Murata Manufacturing Co., Ltd.Method of regulating resonance frequency of surface-mountable antenna
US5619218 *Jun 6, 1995Apr 8, 1997Hughes Missile Systems CompanyCommon aperture isolated dual frequency band antenna
US7519408Nov 17, 2004Apr 14, 2009Dexcom, Inc.Integrated receiver for continuous analyte sensor
US7591801Feb 26, 2004Sep 22, 2009Dexcom, Inc.Integrated delivery device for continuous glucose sensor
US7637868Jan 11, 2005Dec 29, 2009Dexcom, Inc.Composite material for implantable device
US7640048Feb 22, 2006Dec 29, 2009Dexcom, Inc.Analyte sensor
US7711402Dec 22, 2004May 4, 2010Dexcom, Inc.Device and method for determining analyte levels
US7715893Dec 3, 2004May 11, 2010Dexcom, Inc.Calibration techniques for a continuous analyte sensor
US7771352May 1, 2008Aug 10, 2010Dexcom, Inc.Low oxygen in vivo analyte sensor
US7783333Mar 10, 2005Aug 24, 2010Dexcom, Inc.Transcutaneous medical device with variable stiffness
US7792562Dec 22, 2009Sep 7, 2010Dexcom, Inc.Device and method for determining analyte levels
US7835777Dec 22, 2009Nov 16, 2010Dexcom, Inc.Device and method for determining analyte levels
US7857760Feb 22, 2006Dec 28, 2010Dexcom, Inc.Analyte sensor
US7860544Mar 7, 2007Dec 28, 2010Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US7869853Aug 6, 2010Jan 11, 2011Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US7881763May 2, 2006Feb 1, 2011Dexcom, Inc.Optimized sensor geometry for an implantable glucose sensor
US7885697Mar 10, 2005Feb 8, 2011Dexcom, Inc.Transcutaneous analyte sensor
US7885699Aug 6, 2010Feb 8, 2011Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US7896809Nov 3, 2008Mar 1, 2011Dexcom, Inc.Dual electrode system for a continuous analyte sensor
US7899511Jan 17, 2006Mar 1, 2011Dexcom, Inc.Low oxygen in vivo analyte sensor
US7901354May 1, 2008Mar 8, 2011Dexcom, Inc.Low oxygen in vivo analyte sensor
US7905833Jun 21, 2005Mar 15, 2011Dexcom, Inc.Transcutaneous analyte sensor
US7917186Nov 16, 2009Mar 29, 2011Dexcom, Inc.Calibration techniques for a continuous analyte sensor
US7920906Mar 9, 2006Apr 5, 2011Dexcom, Inc.System and methods for processing analyte sensor data for sensor calibration
US7920907Jun 7, 2007Apr 5, 2011Abbott Diabetes Care Inc.Analyte monitoring system and method
US7927274Jul 29, 2008Apr 19, 2011Dexcom, Inc.Integrated receiver for continuous analyte sensor
US7949381Apr 11, 2008May 24, 2011Dexcom, Inc.Transcutaneous analyte sensor
US7970448Apr 19, 2010Jun 28, 2011Dexcom, Inc.Device and method for determining analyte levels
US7974672Apr 19, 2010Jul 5, 2011Dexcom, Inc.Device and method for determining analyte levels
US7976492Aug 6, 2009Jul 12, 2011Dexcom, Inc.Integrated delivery device for continuous glucose sensor
US8000901Aug 9, 2010Aug 16, 2011Dexcom, Inc.Transcutaneous analyte sensor
US8052601Aug 20, 2008Nov 8, 2011Dexcom, Inc.System and methods for processing analyte sensor data
US8155723Jan 28, 2010Apr 10, 2012Dexcom, Inc.Device and method for determining analyte levels
US8160669Apr 11, 2007Apr 17, 2012Dexcom, Inc.Transcutaneous analyte sensor
US8160671Sep 1, 2010Apr 17, 2012Dexcom, Inc.Calibration techniques for a continuous analyte sensor
US8162829Mar 30, 2009Apr 24, 2012Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8175673Nov 9, 2009May 8, 2012Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8177716Dec 21, 2009May 15, 2012Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8224413Oct 10, 2008Jul 17, 2012Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8226555Mar 18, 2009Jul 24, 2012Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8226557Dec 28, 2009Jul 24, 2012Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8226558Sep 27, 2010Jul 24, 2012Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8229535Feb 20, 2009Jul 24, 2012Dexcom, Inc.Systems and methods for blood glucose monitoring and alert delivery
US8231531Jun 1, 2006Jul 31, 2012Dexcom, Inc.Analyte sensor
US8231532Apr 30, 2007Jul 31, 2012Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8235896Dec 21, 2009Aug 7, 2012Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8249684Sep 1, 2010Aug 21, 2012Dexcom, Inc.Calibration techniques for a continuous analyte sensor
US8255031Mar 17, 2009Aug 28, 2012Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8260392Jun 9, 2008Sep 4, 2012Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8265726Nov 9, 2009Sep 11, 2012Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8273022Feb 13, 2009Sep 25, 2012Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8275437Mar 23, 2007Sep 25, 2012Dexcom, Inc.Transcutaneous analyte sensor
US8275439Nov 9, 2009Sep 25, 2012Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8280475Feb 23, 2009Oct 2, 2012Dexcom, Inc.Transcutaneous analyte sensor
US8282550Jul 29, 2008Oct 9, 2012Dexcom, Inc.Integrated receiver for continuous analyte sensor
US8287454Sep 27, 2010Oct 16, 2012Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8290559Oct 24, 2008Oct 16, 2012Dexcom, Inc.Systems and methods for processing sensor data
US8306598Nov 9, 2009Nov 6, 2012Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8346336Mar 18, 2009Jan 1, 2013Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8346337Jun 30, 2009Jan 1, 2013Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8353829Dec 21, 2009Jan 15, 2013Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8357091Dec 21, 2009Jan 22, 2013Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8366614Mar 30, 2009Feb 5, 2013Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8372005Dec 21, 2009Feb 12, 2013Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8380273Apr 11, 2009Feb 19, 2013Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8391945Mar 17, 2009Mar 5, 2013Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8394021Oct 1, 2007Mar 12, 2013Dexcom, Inc.System and methods for processing analyte sensor data
US8396528Mar 25, 2008Mar 12, 2013Dexcom, Inc.Analyte sensor
US8409131Mar 7, 2007Apr 2, 2013Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8417312Oct 24, 2008Apr 9, 2013Dexcom, Inc.Systems and methods for processing sensor data
US8428678May 16, 2012Apr 23, 2013Dexcom, Inc.Calibration techniques for a continuous analyte sensor
US8442610Aug 21, 2008May 14, 2013Dexcom, Inc.System and methods for processing analyte sensor data
US8465425Jun 30, 2009Jun 18, 2013Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8473021Jul 31, 2009Jun 25, 2013Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8480580Apr 19, 2007Jul 9, 2013Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8483791Apr 11, 2008Jul 9, 2013Dexcom, Inc.Transcutaneous analyte sensor
US8483793Oct 29, 2010Jul 9, 2013Dexcom, Inc.Dual electrode system for a continuous analyte sensor
US8509871Oct 28, 2008Aug 13, 2013Dexcom, Inc.Sensor head for use with implantable devices
US8527025Nov 22, 1999Sep 3, 2013Dexcom, Inc.Device and method for determining analyte levels
US8527026Mar 2, 2012Sep 3, 2013Dexcom, Inc.Device and method for determining analyte levels
US8560037Mar 26, 2010Oct 15, 2013Dexcom, Inc.System and methods for processing analyte sensor data for sensor calibration
US8560039Sep 17, 2009Oct 15, 2013Dexcom, Inc.Particle-containing membrane and particulate electrode for analyte sensors
US8562558Jun 5, 2008Oct 22, 2013Dexcom, Inc.Integrated medicament delivery device for use with continuous analyte sensor
US8565848May 7, 2009Oct 22, 2013Dexcom, Inc.Transcutaneous analyte sensor
US8579816Jan 7, 2010Nov 12, 2013Dexcom, Inc.System and methods for processing analyte sensor data for sensor calibration
US8591455Feb 20, 2009Nov 26, 2013Dexcom, Inc.Systems and methods for customizing delivery of sensor data
US8597189Mar 3, 2009Dec 3, 2013Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8611978Jan 7, 2010Dec 17, 2013Dexcom, Inc.System and methods for processing analyte sensor data for sensor calibration
US8612159Feb 16, 2004Dec 17, 2013Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8617071Jun 21, 2007Dec 31, 2013Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8622905Dec 11, 2009Jan 7, 2014Dexcom, Inc.System and methods for processing analyte sensor data
US8622906Dec 21, 2009Jan 7, 2014Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8641619Dec 21, 2009Feb 4, 2014Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8649841Apr 3, 2007Feb 11, 2014Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8652043Jul 20, 2012Feb 18, 2014Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8660627Mar 17, 2009Feb 25, 2014Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8663109Mar 29, 2010Mar 4, 2014Dexcom, Inc.Transcutaneous analyte sensor
US8666469Nov 16, 2007Mar 4, 2014Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8668645Jan 3, 2003Mar 11, 2014Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8670815Apr 30, 2007Mar 11, 2014Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8672844Feb 27, 2004Mar 18, 2014Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8676287Dec 11, 2009Mar 18, 2014Dexcom, Inc.System and methods for processing analyte sensor data
US8676288Jun 22, 2011Mar 18, 2014Dexcom, Inc.Device and method for determining analyte levels
US8688188Jun 30, 2009Apr 1, 2014Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8690775Apr 11, 2008Apr 8, 2014Dexcom, Inc.Transcutaneous analyte sensor
US8700117Dec 8, 2009Apr 15, 2014Dexcom, Inc.System and methods for processing analyte sensor data
US8721585Mar 30, 2012May 13, 2014Dex Com, Inc.Integrated delivery device for continuous glucose sensor
US8734346Apr 30, 2007May 27, 2014Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8734348Mar 17, 2009May 27, 2014Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8738109Mar 3, 2009May 27, 2014Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8744545Mar 3, 2009Jun 3, 2014Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8750955Nov 2, 2009Jun 10, 2014Dexcom, Inc.Analyte sensor
US8774887Mar 24, 2007Jul 8, 2014Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
US8788006Dec 11, 2009Jul 22, 2014Dexcom, Inc.System and methods for processing analyte sensor data
US8788007Mar 8, 2012Jul 22, 2014Dexcom, Inc.Transcutaneous analyte sensor
US8792953Mar 19, 2010Jul 29, 2014Dexcom, Inc.Transcutaneous analyte sensor
US8792954Mar 19, 2010Jul 29, 2014Dexcom, Inc.Transcutaneous analyte sensor
US8792955Jun 9, 2011Jul 29, 2014Dexcom, Inc.Transcutaneous analyte sensor
US8808228Jun 5, 2008Aug 19, 2014Dexcom, Inc.Integrated medicament delivery device for use with continuous analyte sensor
US8812072Apr 17, 2008Aug 19, 2014Dexcom, Inc.Transcutaneous medical device with variable stiffness
US8840553Feb 26, 2009Sep 23, 2014Abbott Diabetes Care Inc.Analyte monitoring device and methods of use
USRE43399Jun 13, 2008May 22, 2012Dexcom, Inc.Electrode systems for electrochemical sensors
USRE44695May 1, 2012Jan 7, 2014Dexcom, Inc.Dual electrode system for a continuous analyte sensor
DE3134081A1 *Aug 28, 1981Mar 10, 1983Licentia GmbhSpiral antenna
EP0014635A1 *Jan 29, 1980Aug 20, 1980Thomson-CsfDipole fed open cavity antenna
Classifications
U.S. Classification29/600, 264/272.11, 29/846, 343/895, 264/46.6, 264/46.9, 343/912, 427/125, 427/58
International ClassificationH01Q1/38, H01Q9/04, H01P11/00, H01Q9/27
Cooperative ClassificationH01Q9/27, H01Q1/38, H01P11/00
European ClassificationH01P11/00, H01Q9/27, H01Q1/38