CN1108017C - 直接转换接收机及其接收数据的方法 - Google Patents
直接转换接收机及其接收数据的方法 Download PDFInfo
- Publication number
- CN1108017C CN1108017C CN98126023A CN98126023A CN1108017C CN 1108017 C CN1108017 C CN 1108017C CN 98126023 A CN98126023 A CN 98126023A CN 98126023 A CN98126023 A CN 98126023A CN 1108017 C CN1108017 C CN 1108017C
- Authority
- CN
- China
- Prior art keywords
- clock signal
- signal
- frequency
- reference clock
- frequency division
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0024—Carrier regulation at the receiver end
- H04L2027/0026—Correction of carrier offset
- H04L2027/0028—Correction of carrier offset at passband only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0044—Control loops for carrier regulation
- H04L2027/0053—Closed loops
- H04L2027/0057—Closed loops quadrature phase
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Superheterodyne Receivers (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Circuits Of Receivers In General (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Noise Elimination (AREA)
Abstract
Description
Claims (19)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP339550/97 | 1997-12-10 | ||
JP339550/1997 | 1997-12-10 | ||
JP09339550A JP3088368B2 (ja) | 1997-12-10 | 1997-12-10 | ダイレクトコンバージョン受信機 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1220524A CN1220524A (zh) | 1999-06-23 |
CN1108017C true CN1108017C (zh) | 2003-05-07 |
Family
ID=18328538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN98126023A Expired - Fee Related CN1108017C (zh) | 1997-12-10 | 1998-12-10 | 直接转换接收机及其接收数据的方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US6040738A (zh) |
JP (1) | JP3088368B2 (zh) |
CN (1) | CN1108017C (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102307049A (zh) * | 2004-06-23 | 2012-01-04 | 瑞萨电子株式会社 | 无线发送电路以及利用该电路的收发机 |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3009175U (ja) * | 1994-09-19 | 1995-03-28 | 船井電機株式会社 | プリント配線基板 |
TW381376B (en) * | 1997-11-14 | 2000-02-01 | Eten Information System Co Ltd | Communication device for multi-channel radio frequency module |
US6360087B1 (en) * | 1999-03-02 | 2002-03-19 | Conexant Systems, Inc | Direct conversion receiver |
JP4828730B2 (ja) * | 2001-07-05 | 2011-11-30 | 富士通株式会社 | 伝送装置 |
CN100397791C (zh) * | 2003-08-06 | 2008-06-25 | 华为技术有限公司 | 传输***开销处理芯片侧时钟域转换电路的asic实现方法 |
JP2005056333A (ja) * | 2003-08-07 | 2005-03-03 | Seiko Epson Corp | 小切手処理装置、プログラム、電子決済システムおよび小切手処理制御方法 |
US7606550B2 (en) * | 2004-10-29 | 2009-10-20 | Broadcom Corporation | Method and system for a dual mode receiver with low intermediate frequency (IF) and zero second IF |
US7279989B2 (en) * | 2005-06-28 | 2007-10-09 | Intel Corporation | Apparatus, system and method capable of clock noise mitigation using a frequency adaptive process |
JP4948077B2 (ja) * | 2005-10-14 | 2012-06-06 | ルネサスエレクトロニクス株式会社 | 送受信装置及びそれを用いた通信システム |
EP1879377A3 (en) * | 2006-07-13 | 2010-06-16 | Panasonic Corporation | Portable Device |
US7894773B2 (en) * | 2007-09-28 | 2011-02-22 | Intel Corporation | Reducing exposure of radio devices to interference through adaptive selection of repetitive symbols |
JP4758483B2 (ja) * | 2009-01-15 | 2011-08-31 | シャープ株式会社 | 電子装置 |
CN103297158B (zh) * | 2013-05-10 | 2015-12-09 | 无锡泽太微电子有限公司 | 接收机内部自测电路及方法 |
CN103490791B (zh) | 2013-09-16 | 2016-05-25 | 华为技术有限公司 | 一种接收机 |
CN103973260B (zh) * | 2014-04-23 | 2017-01-18 | 小米科技有限责任公司 | 信号处理芯片、信号转换电路和通信芯片的管脚配置方法 |
JP7000051B2 (ja) * | 2017-07-03 | 2022-01-19 | 株式会社日立製作所 | 受信機、送信機、および無線通信機 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5881337A (ja) * | 1981-11-10 | 1983-05-16 | Hitachi Denshi Ltd | 周波数シンセサイザ |
JP2541313B2 (ja) * | 1989-07-29 | 1996-10-09 | 日本電気株式会社 | デュアルpll装置 |
JPH07177054A (ja) * | 1993-12-21 | 1995-07-14 | Hitachi Ltd | ディジタル無線通信端末 |
KR100196568B1 (ko) * | 1995-12-27 | 1999-06-15 | 윤종용 | 무선호출수신기의 문자수신 표시장치 |
US5983082A (en) * | 1997-10-31 | 1999-11-09 | Motorola, Inc. | Phase quadrature signal generator having a variable phase shift network |
-
1997
- 1997-12-10 JP JP09339550A patent/JP3088368B2/ja not_active Expired - Fee Related
-
1998
- 1998-11-30 US US09/201,176 patent/US6040738A/en not_active Expired - Lifetime
- 1998-12-10 CN CN98126023A patent/CN1108017C/zh not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102307049A (zh) * | 2004-06-23 | 2012-01-04 | 瑞萨电子株式会社 | 无线发送电路以及利用该电路的收发机 |
CN102307049B (zh) * | 2004-06-23 | 2014-06-25 | 瑞萨电子株式会社 | 无线发送电路以及利用该电路的收发机 |
Also Published As
Publication number | Publication date |
---|---|
JP3088368B2 (ja) | 2000-09-18 |
US6040738A (en) | 2000-03-21 |
CN1220524A (zh) | 1999-06-23 |
JPH11177453A (ja) | 1999-07-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C06 | Publication | ||
PB01 | Publication | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: LENOVO INNOVATION CO., LTD. (HONGKONG) Free format text: FORMER OWNER: NEC CORP. Effective date: 20141202 |
|
C41 | Transfer of patent application or patent right or utility model | ||
COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; TO: HONG KONG, CHINA |
|
TR01 | Transfer of patent right |
Effective date of registration: 20141202 Address after: Hongkong, China Patentee after: LENOVO INNOVATIONS Co.,Ltd.(HONG KONG) Address before: Tokyo, Japan Patentee before: NEC Corp. |
|
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030507 Termination date: 20161210 |