CA2618688A1 - Toroidal inductor design for improved q - Google Patents

Toroidal inductor design for improved q Download PDF

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Publication number
CA2618688A1
CA2618688A1 CA002618688A CA2618688A CA2618688A1 CA 2618688 A1 CA2618688 A1 CA 2618688A1 CA 002618688 A CA002618688 A CA 002618688A CA 2618688 A CA2618688 A CA 2618688A CA 2618688 A1 CA2618688 A1 CA 2618688A1
Authority
CA
Canada
Prior art keywords
type
coil
elongated
segment
comprised
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002618688A
Other languages
French (fr)
Other versions
CA2618688C (en
Inventor
Michael D. Pleskach
Bayardo A. Payan
Terry Provo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harris Corp
Original Assignee
Harris Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Harris Corp filed Critical Harris Corp
Publication of CA2618688A1 publication Critical patent/CA2618688A1/en
Application granted granted Critical
Publication of CA2618688C publication Critical patent/CA2618688C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/0006—Printed inductances
    • H01F17/0033—Printed inductances with the coil helically wound around a magnetic core
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/0006—Printed inductances
    • H01F17/0013—Printed inductances with stacked layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/04—Fixed inductances of the signal type  with magnetic core
    • H01F17/06—Fixed inductances of the signal type  with magnetic core with core substantially closed in itself, e.g. toroid
    • H01F17/062—Toroidal core with turns of coil around it
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2804—Printed windings
    • H01F2027/2814—Printed windings with only part of the coil or of the winding in the printed circuit board, e.g. the remaining coil or winding sections can be made of wires or sheets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49073—Electromagnet, transformer or inductor by assembling coil and core

Abstract

A toroidal inductor (100) and method of forming same. The invention is intended to decrease the direct current resistance (DCR) of the toroidal inductor circuit. Thus, an increase in the quality factor (Q) of the circuit is produced. The toroidal inductor includes a coil formed from an elongated conductor extending around a core material and defining a plurality of turns. The elongated conductor is comprised of one or more coil segments. The coil segments are arranged in an alternating pattern of a first type segment (101) and a second type segment (102).
Each of the coil segments of the first type includes a plurality of elongated parallel conductors (104, 105) spaced apart and electrically connected by conductive links (108) at predetermined intervals along their respective lengths. The coil segments of the second type are formed of a single conductor defined by a conductive via (302, 304) formed in the substrate.

Claims (17)

1. An inductor, comprising:
a coil formed from an elongated conductor extending around a core material and defining a plurality of turns;
said elongated conductor comprised of at least one coil segment of a first type, each said coil segment of said first type comprised of a plurality of elongated parallel conductors spaced apart and electrically connected by conductive links at predetermined intervals along their respective lengths.
2. The inductor according to claim 1, wherein said elongated conductor is further comprised of at least one coil segment of a second type, said coil segment of said second type formed of a single conductor.
3. The inductor according to claim 2, wherein said coil segment of said first type and said coil segment of said second type are arranged in a series configuration to form said elongated conductor.
4. The inductor according to claim 3, wherein said elongated conductor is comprised of a plurality of said coil segments of said first type and a plurality of said coil segments of said second type, each said coil segment of said second type defining a series electrical connection between coil segments of said first type.
5. The inductor according to claim 2, wherein each said single conductor comprising said coil segment of said second type is comprised of a conductive via formed in a substrate.
6. The inductor according to claim 1, wherein each of said elongated parallel conductors is comprised of a conductive trace disposed on a surface of a substrate.
7. The inductor according to claim 1 wherein said conductive links are formed from vias defined in a substrate.
8. An inductor, comprising:
a coil formed from an elongated conductor extending around a core material and defining a plurality of turns;
said elongated conductor comprised of a plurality of coil segments arranged in an alternating pattern of a first type segment and a second type segment, said first type segment comprising a plurality of parallel conductors spaced apart and electrically connected at predetermined intervals along a length of said plurality of parallel conductors and said second type segment comprising a single elongated conductor.
9. The inductor according to claim 8, wherein said second type segments are comprised of conductive vias formed in a substrate.
10. The inductor according to claim 8, wherein each said parallel conductor is comprised of a conductive trace disposed on a surface of a substrate, and said conductive traces are connected at said predetermined intervals by at least one conductive via.
11. A method for forming an inductor, comprising:
forming a coil from an elongated conductor extending around a core material to define a plurality of turns;
forming said elongated conductor to include at least one coil segment of a first type comprised of a plurality of elongated parallel conductors spaced apart;
and electrically connecting said elongated parallel conductors by means of conductive links spaced at predetermined intervals along a length of said plurality of elongated parallel conductors.
12. The method according to claim 11, further comprising forming said elongated conductor of at least one coil segment of a second type, said coil segment of said second type formed of a single conductor.
13. The method according to claim 12, further comprising arranging said at least one coil segment of said first type and said at least one coil segment of said second type in a series configuration to form said elongated conductor.
14. The method according to claim 13, further comprising forming with said at least one coil segment of said second type a series electrical connection between a plurality of said coil segments of said first type.
15. The method according to claim 12, further comprising forming each said coil segment of said second type as a conductive via formed in a substrate.
16. The method according to claim 11, further comprising forming each of said parallel conductors as a conductive trace disposed on a surface of a substrate.
17. The method according to claim 11 further comprising forming said conductive links from vias defined in a substrate.
CA2618688A 2007-01-18 2008-01-16 Toroidal inductor design for improved q Expired - Fee Related CA2618688C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/624,321 2007-01-18
US11/624,321 US7304558B1 (en) 2007-01-18 2007-01-18 Toroidal inductor design for improved Q

Publications (2)

Publication Number Publication Date
CA2618688A1 true CA2618688A1 (en) 2008-07-18
CA2618688C CA2618688C (en) 2012-03-13

Family

ID=38775442

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2618688A Expired - Fee Related CA2618688C (en) 2007-01-18 2008-01-16 Toroidal inductor design for improved q

Country Status (4)

Country Link
US (1) US7304558B1 (en)
EP (1) EP1947658A1 (en)
JP (1) JP2008177574A (en)
CA (1) CA2618688C (en)

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US7436282B2 (en) * 2004-12-07 2008-10-14 Multi-Fineline Electronix, Inc. Miniature circuitry and inductive components and methods for manufacturing same
DE102006025194A1 (en) * 2006-05-29 2007-12-06 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG Inductive conductivity sensor for measuring electrical conductivity of medium, has toroidal coils, which enclose continuous opening that is subjected to medium, and several conductor sections, which are connected by through connections
US7524731B2 (en) * 2006-09-29 2009-04-28 Freescale Semiconductor, Inc. Process of forming an electronic device including an inductor
US8106739B2 (en) * 2007-06-12 2012-01-31 Advanced Magnetic Solutions United Magnetic induction devices and methods for producing them
DE102008062870A1 (en) * 2008-12-17 2010-07-01 Würth Elektronik eiSos Gmbh & Co. KG Inductance component for use on printed circuit board for producing coil surrounding coil cores, has u-shaped conductor sections arranged in housing, and brackets whose ends are connectably formed for formation of coil surrounding core
JP5902440B2 (en) * 2011-10-31 2016-04-13 京セラ株式会社 Inductor parts and electronic devices
US9431473B2 (en) 2012-11-21 2016-08-30 Qualcomm Incorporated Hybrid transformer structure on semiconductor devices
US10002700B2 (en) 2013-02-27 2018-06-19 Qualcomm Incorporated Vertical-coupling transformer with an air-gap structure
US9634645B2 (en) 2013-03-14 2017-04-25 Qualcomm Incorporated Integration of a replica circuit and a transformer above a dielectric substrate
US9449753B2 (en) 2013-08-30 2016-09-20 Qualcomm Incorporated Varying thickness inductor
US9906318B2 (en) 2014-04-18 2018-02-27 Qualcomm Incorporated Frequency multiplexer
JP6350675B2 (en) 2014-11-12 2018-07-04 株式会社村田製作所 Power supply module and its mounting structure
JP6432674B2 (en) * 2015-03-16 2018-12-05 株式会社村田製作所 Inductor parts
US9947456B2 (en) 2015-11-24 2018-04-17 The University Of North Carolina At Charlotte High power density printed circuit board (PCB) embedded inductors
JP6838548B2 (en) * 2017-12-07 2021-03-03 株式会社村田製作所 Coil parts and their manufacturing methods

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Also Published As

Publication number Publication date
JP2008177574A (en) 2008-07-31
EP1947658A1 (en) 2008-07-23
US7304558B1 (en) 2007-12-04
CA2618688C (en) 2012-03-13

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Effective date: 20140116