NO971542L - Automatisk avstemming av en radiosender/mottaker - Google Patents
Automatisk avstemming av en radiosender/mottakerInfo
- Publication number
- NO971542L NO971542L NO971542A NO971542A NO971542L NO 971542 L NO971542 L NO 971542L NO 971542 A NO971542 A NO 971542A NO 971542 A NO971542 A NO 971542A NO 971542 L NO971542 L NO 971542L
- Authority
- NO
- Norway
- Prior art keywords
- indicator
- signal
- amplitude
- receiver
- frequency response
- Prior art date
Links
- 238000005259 measurement Methods 0.000 abstract 1
Classifications
-
- 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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
- H03C3/40—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated
- H03C3/406—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated using a feedback loop containing mixers or demodulators
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
- H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/16—Multiple-frequency-changing
- H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
- H03D7/166—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature using two or more quadrature frequency translation stages
- H03D7/168—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature using two or more quadrature frequency translation stages using a feedback loop containing mixers or demodulators
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Transmitters (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Circuits Of Receivers In General (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Transceivers (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI953749A FI98673C (fi) | 1995-08-07 | 1995-08-07 | Automaattinen radiolähettimen viritys |
PCT/FI1996/000431 WO1997006607A1 (en) | 1995-08-07 | 1996-08-06 | Automatic tuning of a radio transceiver |
Publications (2)
Publication Number | Publication Date |
---|---|
NO971542D0 NO971542D0 (no) | 1997-04-04 |
NO971542L true NO971542L (no) | 1997-06-05 |
Family
ID=8543849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO971542A NO971542L (no) | 1995-08-07 | 1997-04-04 | Automatisk avstemming av en radiosender/mottaker |
Country Status (10)
Country | Link |
---|---|
US (1) | US5933448A (fi) |
EP (1) | EP0789953B1 (fi) |
JP (1) | JPH10507610A (fi) |
CN (1) | CN1082750C (fi) |
AT (1) | ATE218772T1 (fi) |
AU (1) | AU707026B2 (fi) |
DE (1) | DE69621582T2 (fi) |
FI (1) | FI98673C (fi) |
NO (1) | NO971542L (fi) |
WO (1) | WO1997006607A1 (fi) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3822057B2 (ja) * | 1999-04-02 | 2006-09-13 | 三菱電機株式会社 | 移動通信端末装置 |
GB2351404B (en) * | 1999-06-24 | 2003-11-12 | Nokia Mobile Phones Ltd | A transmitter and a modulator therefor |
DE19933266A1 (de) * | 1999-07-15 | 2000-11-02 | Siemens Ag | Vorrichtung zum Empfangen von Funksignalen |
GB2363267B (en) * | 2000-06-07 | 2002-08-07 | Motorola Israel Ltd | Circuit and method for signal phase control in a radio transceiver |
US6745015B2 (en) | 2001-02-08 | 2004-06-01 | Motorola, Inc. | Method for automatic carrier suppression tuning of a wireless communication device |
US20030003891A1 (en) * | 2001-07-02 | 2003-01-02 | Nokia Corporation | Method to improve I/Q-amplitude balance and receiver quadrature channel performance |
US20030078011A1 (en) * | 2001-10-18 | 2003-04-24 | Integrated Programmable Communications, Inc. | Method for integrating a plurality of radio systems in a unified transceiver structure and the device of the same |
US6819910B2 (en) * | 2002-03-08 | 2004-11-16 | Broadcom Corp. | Radio employing a self calibrating transmitter with reuse of receiver circuitry |
US20080146168A1 (en) * | 2004-02-09 | 2008-06-19 | Sige Semiconductor Inc. | Methods of Enhancing Power Amplifier Linearity |
US7596195B2 (en) | 2004-03-31 | 2009-09-29 | Broadcom Corporation | Bandpass filter with reversible IQ polarity to enable a high side or low side injection receiver architecture |
US7603098B2 (en) * | 2004-03-31 | 2009-10-13 | Broadcom Corporation | Programmable IF frequency filter for enabling a compromise between DC offset rejection and image rejection |
CN101986580B (zh) * | 2009-07-29 | 2013-08-14 | 澜起科技(上海)有限公司 | 测量及补偿接收机参数的方法及装置 |
CN105099580B (zh) * | 2015-08-26 | 2018-01-09 | 北京朗波芯微技术有限公司 | 正交失配的校准***及方法、射频前端芯片 |
CN110868264B (zh) * | 2018-08-28 | 2021-12-10 | 北京紫光展锐通信技术有限公司 | 时分双工收发机及其校准方法、可读存储介质 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0343273B1 (de) * | 1988-05-27 | 1994-04-27 | Deutsche ITT Industries GmbH | Korrekturschaltung für ein digitales Quadratur-Signalpaar |
US4943982A (en) * | 1989-05-01 | 1990-07-24 | Motorola, Inc. | Baseband carrier phase corrector |
GB2249442A (en) * | 1990-11-01 | 1992-05-06 | Stc Plc | Correction of quadrature phase error |
DE69225259T2 (de) * | 1991-02-22 | 1998-08-20 | Sony Corp | Zeitduplex-Sender-Empfänger |
JPH05130156A (ja) * | 1991-11-08 | 1993-05-25 | Nec Corp | 直交変調器 |
KR960000147B1 (ko) * | 1992-11-05 | 1996-01-03 | 삼성전자주식회사 | 셀룰라 무선전화시스템의 송신전력 제어방법 |
US5453714A (en) * | 1993-03-10 | 1995-09-26 | National Semiconductor Corporation | Binary FM demodulator with self-adjusting resonant operating frequency according to demodulated binary output signal duty cycle |
US5371481A (en) * | 1993-03-24 | 1994-12-06 | Nokia Mobile Phones Ltd. | Tuning techniques for I/Q channel signals in microwave digital transmission systems |
JP2883260B2 (ja) * | 1993-04-20 | 1999-04-19 | 三菱電機株式会社 | 歪補償回路 |
JPH0832462A (ja) * | 1994-07-15 | 1996-02-02 | Uniden Corp | カーテジアンループのdcオフセット回路 |
JPH0832464A (ja) * | 1994-07-15 | 1996-02-02 | Uniden Corp | 送信機におけるキャリアリーク補正方法 |
JP2967699B2 (ja) * | 1995-03-06 | 1999-10-25 | 日本電気株式会社 | 送信装置 |
US5712870A (en) * | 1995-07-31 | 1998-01-27 | Harris Corporation | Packet header generation and detection circuitry |
US5708681A (en) * | 1996-04-23 | 1998-01-13 | Bell Communications Research, Inc. | Hybrid analog/digital method and apparatus for controlling the transmission power level of a radio transceiver |
-
1995
- 1995-08-07 FI FI953749A patent/FI98673C/fi active
-
1996
- 1996-08-06 US US08/817,653 patent/US5933448A/en not_active Expired - Lifetime
- 1996-08-06 DE DE69621582T patent/DE69621582T2/de not_active Expired - Fee Related
- 1996-08-06 AU AU66601/96A patent/AU707026B2/en not_active Ceased
- 1996-08-06 AT AT96926404T patent/ATE218772T1/de not_active IP Right Cessation
- 1996-08-06 EP EP96926404A patent/EP0789953B1/en not_active Expired - Lifetime
- 1996-08-06 CN CN96190879A patent/CN1082750C/zh not_active Expired - Fee Related
- 1996-08-06 JP JP9508148A patent/JPH10507610A/ja active Pending
- 1996-08-06 WO PCT/FI1996/000431 patent/WO1997006607A1/en active IP Right Grant
-
1997
- 1997-04-04 NO NO971542A patent/NO971542L/no not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
NO971542D0 (no) | 1997-04-04 |
CN1082750C (zh) | 2002-04-10 |
CN1161116A (zh) | 1997-10-01 |
FI953749A0 (fi) | 1995-08-07 |
EP0789953A1 (en) | 1997-08-20 |
DE69621582D1 (de) | 2002-07-11 |
WO1997006607A1 (en) | 1997-02-20 |
US5933448A (en) | 1999-08-03 |
EP0789953B1 (en) | 2002-06-05 |
DE69621582T2 (de) | 2002-12-19 |
FI98673B (fi) | 1997-04-15 |
FI98673C (fi) | 1997-07-25 |
AU707026B2 (en) | 1999-07-01 |
FI953749A (fi) | 1997-02-08 |
ATE218772T1 (de) | 2002-06-15 |
AU6660196A (en) | 1997-03-05 |
JPH10507610A (ja) | 1998-07-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FC2A | Withdrawal, rejection or dismissal of laid open patent application |