DE602005024845D1 - Impedanzdetektor - Google Patents

Impedanzdetektor

Info

Publication number
DE602005024845D1
DE602005024845D1 DE602005024845T DE602005024845T DE602005024845D1 DE 602005024845 D1 DE602005024845 D1 DE 602005024845D1 DE 602005024845 T DE602005024845 T DE 602005024845T DE 602005024845 T DE602005024845 T DE 602005024845T DE 602005024845 D1 DE602005024845 D1 DE 602005024845D1
Authority
DE
Germany
Prior art keywords
impedance
circuit
antenna
amplifier
detecting
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.)
Active
Application number
DE602005024845T
Other languages
English (en)
Inventor
Bezooijen Adrianus Van
Christophe Chanlo
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.)
TDK Electronics AG
Original Assignee
Epcos AG
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 Epcos AG filed Critical Epcos AG
Publication of DE602005024845D1 publication Critical patent/DE602005024845D1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/38—Impedance-matching networks
    • H03H7/40—Automatic matching of load impedance to source impedance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
DE602005024845T 2004-10-06 2005-09-29 Impedanzdetektor Active DE602005024845D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP04104889 2004-10-06
PCT/IB2005/053218 WO2006038167A1 (en) 2004-10-06 2005-09-29 Impedance detector

Publications (1)

Publication Number Publication Date
DE602005024845D1 true DE602005024845D1 (de) 2010-12-30

Family

ID=35311882

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602005024845T Active DE602005024845D1 (de) 2004-10-06 2005-09-29 Impedanzdetektor

Country Status (7)

Country Link
US (1) US8330475B2 (de)
EP (1) EP1800410B1 (de)
JP (1) JP4828542B2 (de)
CN (1) CN101036302A (de)
AT (1) ATE488914T1 (de)
DE (1) DE602005024845D1 (de)
WO (1) WO2006038167A1 (de)

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WO2008138873A1 (en) * 2007-05-09 2008-11-20 Epcos Ag Broadband detecting circuit
FR2920927B1 (fr) * 2007-09-11 2011-05-06 Commissariat Energie Atomique Procede d'adaptation automatique d'impedance de circuit radiofrequence et chaine d'emission ou reception a adaptation automatique
WO2009090035A1 (en) * 2008-01-14 2009-07-23 Epcos Ag Improvements in or relating to portable wireless devices
US8629650B2 (en) 2008-05-13 2014-01-14 Qualcomm Incorporated Wireless power transfer using multiple transmit antennas
KR101503866B1 (ko) * 2008-12-19 2015-03-18 삼성전자주식회사 이동통신 단말에서 채널 편차 개선을 위한 송신 장치 및 방법
US20100201312A1 (en) 2009-02-10 2010-08-12 Qualcomm Incorporated Wireless power transfer for portable enclosures
US9143172B2 (en) 2009-06-03 2015-09-22 Qualcomm Incorporated Tunable matching circuits for power amplifiers
US8963611B2 (en) 2009-06-19 2015-02-24 Qualcomm Incorporated Power and impedance measurement circuits for a wireless communication device
CN101655522B (zh) * 2009-06-25 2012-07-04 中兴通讯股份有限公司 实现电磁抗扰滤波器阻抗匹配的方法及相应的测量系统
US8750810B2 (en) 2009-07-24 2014-06-10 Qualcomm Incorporated Power amplifier with switched output matching for multi-mode operation
US8072272B2 (en) 2009-08-19 2011-12-06 Qualcomm, Incorporated Digital tunable inter-stage matching circuit
US9559639B2 (en) 2009-08-19 2017-01-31 Qualcomm Incorporated Protection circuit for power amplifier
US20110300812A1 (en) * 2010-06-04 2011-12-08 Camp Jr William O Communications circuitry for an electronic device
US8811911B2 (en) * 2010-07-02 2014-08-19 Htc Corporation Radio-frequency processing device and method and related wireless communication device
CN102006028B (zh) * 2010-11-15 2014-07-02 中兴通讯股份有限公司 一种阻抗匹配的方法及电路
US8779868B2 (en) 2011-03-10 2014-07-15 Harris Corporation Mobile wireless communications device with adjustable impedance matching network and associated methods
EP2735840B1 (de) * 2012-11-21 2015-04-22 Veyance Technologies, Inc. Messbereichschaltung für intelligente Luftfedern
US9379761B2 (en) 2013-01-11 2016-06-28 Qualcomm Technologies, Inc. Impedance measurement system and mobile communication device comprising an impedance measurement system
GB2529887B (en) * 2014-09-05 2019-06-19 Smart Antenna Tech Limited Antenna impedance matching circuit tuning system
US9939398B2 (en) 2014-09-12 2018-04-10 Hzo, Inc. Detecting moisture with an antenna
US9800713B2 (en) 2014-09-12 2017-10-24 Hzo, Inc. Moisture detection response
DE102014013605A1 (de) 2014-09-12 2016-03-17 Dialog Semiconductor B.V. Impedanzdetektor mit geringer Leistung auf einem Chip
EP3010148A1 (de) * 2014-10-16 2016-04-20 Nxp B.V. Automatische Impedanzanpassung
US11201595B2 (en) * 2015-11-24 2021-12-14 Skyworks Solutions, Inc. Cascode power amplifier with switchable output matching network
CN106411284A (zh) * 2016-10-14 2017-02-15 上海移为通信技术股份有限公司 一种自适应匹配电路及其阻抗优化方法
US10250076B2 (en) 2017-03-15 2019-04-02 Hong Kong Applied Science And Technology Research Institute Co., Ltd. Wireless power transmitter
KR102089266B1 (ko) * 2018-11-05 2020-04-20 주식회사 휴미디어 임피던스 자동매칭 기능이 부가된 선박용 무선송신기
EP3900155A4 (de) * 2018-12-21 2022-09-28 Solace Power Inc. System und sender zur drahtlosen übertragung der energie eines elektrischen feldes und verfahren zur drahtlosen energieübertragung
CN110806506B (zh) * 2019-10-23 2020-10-27 西安交通大学 一种用于射频频段电接触元件的接触阻抗测量系统及方法
CN110927465B (zh) * 2019-11-26 2022-09-02 深圳供电局有限公司 直流电阻测量电路及装置
EP3933416A1 (de) * 2020-06-30 2022-01-05 Imec VZW Rf-impedanz-messschaltung
US11609253B2 (en) 2020-09-30 2023-03-21 Qualcomm Incorporated Apparatus and method to determine impedance and/or admittance in a wireless device
CN112763806A (zh) * 2021-03-03 2021-05-07 贵州电网有限责任公司 考虑移相变压器接入输电线路距离保护测量阻抗计算方法
CN114814500B (zh) * 2022-06-28 2022-09-23 宁波均胜新能源研究院有限公司 交流绝缘检测方法及装置
CN116184029B (zh) * 2023-04-27 2023-07-25 季华实验室 一种阻抗检测电路、方法、阻抗匹配器及匹配调节方法
CN117452073A (zh) * 2023-12-25 2024-01-26 深圳市瀚强科技股份有限公司 负载阻抗的检测方法及装置
CN117517785B (zh) * 2024-01-08 2024-04-23 深圳市瀚强科技股份有限公司 阻抗检测电路、阻抗检测设备及阻抗检测方法
CN117538616B (zh) * 2024-01-09 2024-04-23 深圳市瀚强科技股份有限公司 阻抗检测方法、阻抗检测电路及阻抗检测设备
CN117538615A (zh) * 2024-01-09 2024-02-09 深圳市瀚强科技股份有限公司 阻抗检测电路、阻抗检测设备及阻抗检测方法

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US3825823A (en) * 1972-01-21 1974-07-23 L Rovner Apparatus for detecting the direction of a magnetic field relative to a marker direction by sequentially scanning plural stationary sensors
US4493112A (en) 1981-11-19 1985-01-08 Rockwell International Corporation Antenna tuner discriminator
US4493113A (en) 1982-09-10 1985-01-08 At&T Bell Laboratories Bidirectional fiber optic transmission systems and photodiodes for use in such systems
JPH0580093A (ja) * 1991-09-19 1993-03-30 Nec Corp 電子回路のインピーダンス検査装置
JP3176128B2 (ja) * 1992-06-25 2001-06-11 株式会社ダイヘン インピーダンス整合器の出力電圧測定装置
US5483680A (en) * 1994-01-07 1996-01-09 Harris Corporation Tuning method for automatic antenna couplers
KR100247005B1 (ko) * 1997-05-19 2000-04-01 윤종용 알에프 증폭기에서 전기 제어 임피던스 매칭장치
US6414562B1 (en) * 1997-05-27 2002-07-02 Motorola, Inc. Circuit and method for impedance matching
US6005398A (en) * 1997-09-26 1999-12-21 Rockwell Science Center, Inc. High speed phase and amplitude measurement system and method
US6057690A (en) * 1998-01-14 2000-05-02 Advanced Testing Technologies, Inc. Automatic testing device for signal evaluation
US6407550B1 (en) * 1998-08-19 2002-06-18 Metrotech Corporation Line locator with accurate horizontal displacement detection
US6541993B2 (en) * 2000-12-26 2003-04-01 Ericsson, Inc. Transistor device testing employing virtual device fixturing
JP2003179045A (ja) * 2001-12-13 2003-06-27 Tokyo Electron Ltd プラズマ処理装置及びその制御方法
US7548741B2 (en) * 2005-09-02 2009-06-16 Mks Instruments, Inc. Dual logarithmic amplifier phase-magnitude detector

Also Published As

Publication number Publication date
WO2006038167A1 (en) 2006-04-13
JP2008516508A (ja) 2008-05-15
US8330475B2 (en) 2012-12-11
EP1800410B1 (de) 2010-11-17
JP4828542B2 (ja) 2011-11-30
CN101036302A (zh) 2007-09-12
ATE488914T1 (de) 2010-12-15
EP1800410A1 (de) 2007-06-27
US20080266021A1 (en) 2008-10-30

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