NL7600597A - Aanpassingsinrichting voor hf-antenne. - Google Patents
Aanpassingsinrichting voor hf-antenne.Info
- Publication number
- NL7600597A NL7600597A NL7600597A NL7600597A NL7600597A NL 7600597 A NL7600597 A NL 7600597A NL 7600597 A NL7600597 A NL 7600597A NL 7600597 A NL7600597 A NL 7600597A NL 7600597 A NL7600597 A NL 7600597A
- Authority
- NL
- Netherlands
- Prior art keywords
- antenna
- adjustment device
- adjustment
- Prior art date
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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7501969A FR2298903A1 (fr) | 1975-01-22 | 1975-01-22 | Dispositif d'adaptation d'antenne et antenne munie d'un tel dispositif |
Publications (1)
Publication Number | Publication Date |
---|---|
NL7600597A true NL7600597A (nl) | 1976-07-26 |
Family
ID=9150165
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL7600597A NL7600597A (nl) | 1975-01-22 | 1976-01-21 | Aanpassingsinrichting voor hf-antenne. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4015223A (xx) |
DE (1) | DE2601869C2 (xx) |
FR (1) | FR2298903A1 (xx) |
GB (1) | GB1519672A (xx) |
IT (1) | IT1053349B (xx) |
NL (1) | NL7600597A (xx) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3033407A1 (de) * | 1980-09-05 | 1982-04-22 | Robert Bosch Gmbh, 7000 Stuttgart | Sprechfunkgeraet |
US4375051A (en) * | 1981-02-19 | 1983-02-22 | The Perkin-Elmer Corporation | Automatic impedance matching between source and load |
US4493112A (en) * | 1981-11-19 | 1985-01-08 | Rockwell International Corporation | Antenna tuner discriminator |
US4485360A (en) * | 1982-07-16 | 1984-11-27 | Cincinnati Electronics Corporation | Apparatus for and method of impedance matching |
US4621242A (en) * | 1984-03-19 | 1986-11-04 | The Perkin-Elmer Corporation | R.F. impedance match control system |
GB2178616B (en) * | 1985-07-26 | 1989-04-26 | Marconi Co Ltd | Impedance matching arrangement |
US4951009A (en) * | 1989-08-11 | 1990-08-21 | Applied Materials, Inc. | Tuning method and control system for automatic matching network |
US5088971A (en) * | 1991-03-22 | 1992-02-18 | Mobil Oil Corporation | Method of making protruding end stops for plastic reclosable fastener |
FI87864C (fi) * | 1991-05-09 | 1993-02-25 | Telenokia Oy | Anordning och foerfarande foer reglering av ett bandpassfilter, saerskilt ett kombinatorfilter |
EP0620649B1 (en) * | 1993-03-18 | 1997-09-10 | NCR International, Inc. | Transceiver circuit for an integrated circuit |
US5483680A (en) * | 1994-01-07 | 1996-01-09 | Harris Corporation | Tuning method for automatic antenna couplers |
GB2289989B (en) * | 1994-05-25 | 1999-01-06 | Nokia Mobile Phones Ltd | Adaptive antenna matching |
US5629653A (en) * | 1995-07-07 | 1997-05-13 | Applied Materials, Inc. | RF match detector circuit with dual directional coupler |
US5631611A (en) * | 1996-06-18 | 1997-05-20 | Nautel Limited | Automatic matching and tuning network |
US6414562B1 (en) * | 1997-05-27 | 2002-07-02 | Motorola, Inc. | Circuit and method for impedance matching |
US6825794B2 (en) * | 2000-06-02 | 2004-11-30 | Research In Motion Limited | Wireless communication system using surface acoustic wave (SAW) second harmonic techniques |
US6570462B2 (en) * | 2000-11-08 | 2003-05-27 | Research In Motion Limited | Adaptive tuning device and method utilizing a surface acoustic wave device for tuning a wireless communication device |
US6608603B2 (en) * | 2001-08-24 | 2003-08-19 | Broadcom Corporation | Active impedance matching in communications systems |
EP1542026A1 (en) * | 2003-12-11 | 2005-06-15 | Siemens Aktiengesellschaft | Method and device for determining an electromagnetic reflection coefficient of an antenna, a method and device for automatically changing the matching of a power amplifier to an antenna, and a method and a device for automatically reducing the output power of a power amplifier |
WO2007103546A2 (en) | 2006-03-08 | 2007-09-13 | Wispry, Inc. | Micro-electro-mechanical system (mems) variable capacitors and actuation components and related methods |
KR100785079B1 (ko) * | 2006-04-04 | 2007-12-12 | 삼성전자주식회사 | 부하의 임피던스 정합시스템 및 정합방법과, 이를 적용한네트워크 분석기 |
FR2934421B1 (fr) * | 2008-07-23 | 2010-08-13 | St Microelectronics Tours Sas | Detection de valeur d'une impedance d'un systeme radiofrequence |
DE102009004720B4 (de) * | 2009-01-15 | 2017-07-27 | Qualcomm Technologies, Inc. (N.D.Ges.D. Staates Delaware) | Multiband-Impedanzanpass-Schaltung zur Anpassung von Planarantennen |
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 |
US8750810B2 (en) * | 2009-07-24 | 2014-06-10 | Qualcomm Incorporated | Power amplifier with switched output matching for multi-mode operation |
US9559639B2 (en) * | 2009-08-19 | 2017-01-31 | Qualcomm Incorporated | Protection circuit for power amplifier |
US8072272B2 (en) | 2009-08-19 | 2011-12-06 | Qualcomm, Incorporated | Digital tunable inter-stage matching circuit |
CN102823129B (zh) * | 2010-01-15 | 2015-07-08 | 维斯普瑞公司 | 可调匹配网路电路拓扑装置及方法 |
US9031523B2 (en) * | 2012-06-26 | 2015-05-12 | Htc Corporation | Systems and methods for determining antenna impedance |
CN107636894B (zh) * | 2015-05-18 | 2021-04-23 | 卡文迪什动力有限公司 | 维持恒定天线谐振频率和阻抗匹配的方法和装置 |
US10355662B2 (en) | 2016-12-06 | 2019-07-16 | Honeywell International Inc. | Impedance matching using tunable elements |
US10736050B2 (en) | 2018-07-09 | 2020-08-04 | Honeywell International Inc. | Adjusting transmission power of an antenna based on an object causing path loss in a communication link |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3601717A (en) * | 1969-11-20 | 1971-08-24 | Gen Dynamics Corp | System for automatically matching a radio frequency power output circuit to a load |
US3794941A (en) * | 1972-05-08 | 1974-02-26 | Hughes Aircraft Co | Automatic antenna impedance tuner including digital control circuits |
US3846713A (en) * | 1972-06-12 | 1974-11-05 | Drake R Co | Method and apparatus for tuning an amplifier circuit |
US3959746A (en) * | 1973-10-17 | 1976-05-25 | International Telephone And Telegraph Corporation | Automatic antenna coupler tuning control circuit |
-
1975
- 1975-01-22 FR FR7501969A patent/FR2298903A1/fr active Granted
-
1976
- 1976-01-19 GB GB2036/76A patent/GB1519672A/en not_active Expired
- 1976-01-20 IT IT47702/76A patent/IT1053349B/it active
- 1976-01-20 DE DE2601869A patent/DE2601869C2/de not_active Expired
- 1976-01-21 US US05/650,855 patent/US4015223A/en not_active Expired - Lifetime
- 1976-01-21 NL NL7600597A patent/NL7600597A/xx not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
FR2298903B1 (xx) | 1978-02-24 |
IT1053349B (it) | 1981-08-31 |
GB1519672A (en) | 1978-08-02 |
DE2601869A1 (de) | 1976-07-29 |
DE2601869C2 (de) | 1983-01-13 |
US4015223A (en) | 1977-03-29 |
FR2298903A1 (fr) | 1976-08-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BA | A request for search or an international-type search has been filed | ||
BB | A search report has been drawn up | ||
BC | A request for examination has been filed | ||
BC | A request for examination has been filed | ||
BV | The patent application has lapsed | ||
BV | The patent application has lapsed |