JP2006505196A5 - - Google Patents
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- Publication number
- JP2006505196A5 JP2006505196A5 JP2004548628A JP2004548628A JP2006505196A5 JP 2006505196 A5 JP2006505196 A5 JP 2006505196A5 JP 2004548628 A JP2004548628 A JP 2004548628A JP 2004548628 A JP2004548628 A JP 2004548628A JP 2006505196 A5 JP2006505196 A5 JP 2006505196A5
- Authority
- JP
- Japan
- Prior art keywords
- oscillation signal
- signal
- frequency
- controlled oscillator
- voltage controlled
- 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
Links
- 239000000969 carrier Substances 0.000 claims 6
- 238000006243 chemical reaction Methods 0.000 claims 2
- 230000001131 transforming Effects 0.000 claims 2
Claims (7)
- 前記第2の発振信号とベースバンド信号とを混合して、中間周波数信号を生成するステップと、
前記第1の発振信号に基づいて、変換ループ中の電圧制御発振器の周波数を設定するステップと
をさらに具え、
前記電圧制御発振器の前記周波数は、前記所望の搬送波周波数に一致する
ことを特徴とする請求項1記載の方法。 - 前記第1の発振信号および前記第2の発振信号は、単一のフェーズロックドループ装置であることを特徴とする請求項1記載の方法。
- 前記第2の発振信号とベースバンド信号を混合して、中間周波数信号を生成する第1の混合器と、
前記第1の混合器の出力を受け取る変換ループと
をさらに具え、
該変換ループは、
前記第1の発振信号に基づいて設定された周波数を有する電圧制御発振器を含み、該電圧制御発振器の前記周波数は、前記所望の搬送波周波数に一致することを特徴とする請求項4記載のシステム。 - 前記変換ループは、
前記電圧制御発振器の出力と前記第1の発振信号を混合して帰還信号を生成する第2の混合器と、
前記帰還信号を前記中間周波数信号と比較して、前記電圧制御発振器を前記所望の搬送波周波数に設定するための制御信号を導出する位相/周波数検出器と
を含むことを特徴とする請求項5記載のシステム。 - 前記局部発振信号発生器は、単一のフェーズドロックループ装置から出力される前記基準発振信号から前記第1の発振信号および前記第2の発振信号を生成することを特徴とする請求項4記載のシステム。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/284,342 US6963620B2 (en) | 2002-10-31 | 2002-10-31 | Communication transmitter using offset phase-locked-loop |
PCT/US2003/034839 WO2004040872A1 (en) | 2002-10-31 | 2003-10-31 | Communication transmitter using offset phase-locked-loop |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2006505196A JP2006505196A (ja) | 2006-02-09 |
JP2006505196A5 true JP2006505196A5 (ja) | 2006-11-30 |
JP4416660B2 JP4416660B2 (ja) | 2010-02-17 |
Family
ID=32174848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004548628A Expired - Lifetime JP4416660B2 (ja) | 2002-10-31 | 2003-10-31 | 信号の周波数を変換するためのシステムおよび方法 |
Country Status (10)
Country | Link |
---|---|
US (1) | US6963620B2 (ja) |
EP (1) | EP1557021A1 (ja) |
JP (1) | JP4416660B2 (ja) |
KR (1) | KR100997491B1 (ja) |
CN (1) | CN100550873C (ja) |
AU (1) | AU2003290564A1 (ja) |
CA (1) | CA2503070A1 (ja) |
HK (1) | HK1082351A1 (ja) |
TW (1) | TW200428834A (ja) |
WO (1) | WO2004040872A1 (ja) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3092726U (ja) * | 2002-09-11 | 2003-03-28 | アルプス電気株式会社 | テレビジョンチューナ |
US6963620B2 (en) * | 2002-10-31 | 2005-11-08 | Gct Semiconductor, Inc. | Communication transmitter using offset phase-locked-loop |
US7362826B2 (en) * | 2003-09-29 | 2008-04-22 | Silicon Laboratories, Inc. | Receiver including an oscillation circuit for generating an image rejection calibration tone |
EP1722471A1 (fr) * | 2005-05-11 | 2006-11-15 | STMicroelectronics N.V. | Procédé et dispositif d'élaboration de deux signaux en quadrature de phase, en particulier pour une transposition de fréquence au sein d'un téléphone mobile cellulaire |
US7409192B2 (en) | 2005-07-21 | 2008-08-05 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for frequency synthesis in direct-conversion transmitters |
US7755437B2 (en) * | 2005-08-24 | 2010-07-13 | Qualcomm Incorporated | Phase locked loop system having locking and tracking modes of operation |
US7949072B2 (en) * | 2005-10-11 | 2011-05-24 | St-Ericsson Sa | Local oscillator with injection pulling suppression and spurious products filtering |
US7683829B2 (en) * | 2006-04-24 | 2010-03-23 | Atheros Communications, Inc. | Method and apparatus for adapting a receiver frequency plan according to location |
US7626462B1 (en) * | 2006-05-02 | 2009-12-01 | Rf Micro Devices, Inc. | Fractional-N based digital AFC system with a translational PLL transmitter |
EP1881608A1 (en) * | 2006-07-17 | 2008-01-23 | Via Technologies, Inc. | Radio frequency transceiver |
US7792497B2 (en) * | 2007-03-22 | 2010-09-07 | Mediatek Inc. | Method and apparatus for frequency synthesizing |
US8059777B2 (en) * | 2007-11-16 | 2011-11-15 | Motorola Solutions, Inc. | Method and apparatus for generating phase shifted local oscillator signals for a feedback loop on a transmitter |
KR102120627B1 (ko) * | 2013-07-04 | 2020-06-09 | 삼성전자주식회사 | 기저대역 모뎀에서 자기 파괴 기능을 지원하는 방법 및 장치 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4755774A (en) * | 1985-07-15 | 1988-07-05 | Motorola Inc. | Two-port synthesizer modulation system employing an improved reference phase modulator |
US5184093A (en) * | 1991-03-08 | 1993-02-02 | Mitsubishi Denki Kabushiki Kaisha | Frequency synthesizer |
CN1082301C (zh) * | 1994-09-10 | 2002-04-03 | 三星电子株式会社 | 数字无线电收发机 |
EP0717491B1 (en) * | 1994-12-13 | 2003-02-26 | Hughes Electronics Corporation | High precision, low phase noise synthesizer with vector modulator |
KR960038686A (ko) * | 1995-04-13 | 1996-11-21 | 김광호 | 단일 주파수에 의한 신호 송수신회로 |
GB2320629B (en) * | 1996-12-23 | 2001-04-25 | Nokia Mobile Phones Ltd | A radio transmitter and phase locked loop therefor |
US6115079A (en) * | 1998-02-14 | 2000-09-05 | Mcrae; Michael W. | Programmable video channel controller |
US6483388B2 (en) * | 2000-06-21 | 2002-11-19 | Research In Motion Limited | Direct digital frequency synthesizer and a hybrid frequency synthesizer combining a direct digital frequency synthesizer and a phase locked loop |
US6868261B2 (en) * | 2001-09-05 | 2005-03-15 | Broadcom Corporation | Transmitter method, apparatus, and frequency plan for minimizing spurious energy |
US6963620B2 (en) * | 2002-10-31 | 2005-11-08 | Gct Semiconductor, Inc. | Communication transmitter using offset phase-locked-loop |
-
2002
- 2002-10-31 US US10/284,342 patent/US6963620B2/en not_active Expired - Lifetime
-
2003
- 2003-10-31 TW TW092130523A patent/TW200428834A/zh unknown
- 2003-10-31 JP JP2004548628A patent/JP4416660B2/ja not_active Expired - Lifetime
- 2003-10-31 AU AU2003290564A patent/AU2003290564A1/en not_active Abandoned
- 2003-10-31 CA CA002503070A patent/CA2503070A1/en not_active Abandoned
- 2003-10-31 CN CNB2003801025256A patent/CN100550873C/zh not_active Expired - Lifetime
- 2003-10-31 EP EP03783099A patent/EP1557021A1/en not_active Withdrawn
- 2003-10-31 KR KR1020057007505A patent/KR100997491B1/ko active IP Right Grant
- 2003-10-31 WO PCT/US2003/034839 patent/WO2004040872A1/en active Application Filing
-
2006
- 2006-04-11 HK HK06104363.5A patent/HK1082351A1/xx not_active IP Right Cessation
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