CN1146109C - 消除直流分量的方法和利用该方法获得的滤波装置 - Google Patents
消除直流分量的方法和利用该方法获得的滤波装置 Download PDFInfo
- Publication number
- CN1146109C CN1146109C CNB99115990XA CN99115990A CN1146109C CN 1146109 C CN1146109 C CN 1146109C CN B99115990X A CNB99115990X A CN B99115990XA CN 99115990 A CN99115990 A CN 99115990A CN 1146109 C CN1146109 C CN 1146109C
- Authority
- CN
- China
- Prior art keywords
- filter
- frequency
- output
- circulator
- signal
- 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
- 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
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/12—Neutralising, balancing, or compensation arrangements
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/04—Frequency selective two-port networks
- H03H11/08—Frequency selective two-port networks using gyrators
-
- 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
- H03D3/008—Compensating DC offsets
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Networks Using Active Elements (AREA)
- Superheterodyne Receivers (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
Description
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9815484 | 1998-12-08 | ||
FR98/15484 | 1998-12-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1260635A CN1260635A (zh) | 2000-07-19 |
CN1146109C true CN1146109C (zh) | 2004-04-14 |
Family
ID=9533721
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB99115990XA Expired - Fee Related CN1146109C (zh) | 1998-12-08 | 1999-12-04 | 消除直流分量的方法和利用该方法获得的滤波装置 |
Country Status (7)
Country | Link |
---|---|
US (2) | US6545569B1 (zh) |
EP (1) | EP1011191B1 (zh) |
JP (1) | JP4494565B2 (zh) |
KR (1) | KR100701488B1 (zh) |
CN (1) | CN1146109C (zh) |
DE (1) | DE69940251D1 (zh) |
TW (1) | TW445700B (zh) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW586263B (en) * | 2003-01-29 | 2004-05-01 | Mediatek Inc | Analog demodulator in a low-IF receiver |
US7689189B2 (en) * | 2005-04-06 | 2010-03-30 | Silicon Laboratories Inc. | Circuit and method for signal reception using a low intermediate frequency reception |
CN101968964B (zh) * | 2010-08-20 | 2015-09-02 | 北京中星微电子有限公司 | 一种去除语音信号中直流分量的方法及装置 |
CN104820151B (zh) * | 2015-05-08 | 2017-11-14 | 天津百利机械装备集团有限公司中央研究院 | 一种100a全数字化有源电力滤波器的信号定标方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1174709A (en) * | 1968-06-07 | 1969-12-17 | Standard Telephones Cables Ltd | A Symmetrical Polyphase Network |
US5398002A (en) * | 1989-02-15 | 1995-03-14 | Samsung Electronics Co., Ltd. | Automatic frequency control system by quadrature-phase in frequency or phase demodulating system |
JPH0437317A (ja) * | 1990-06-01 | 1992-02-07 | Toyo Commun Equip Co Ltd | 受信機の感度抑圧防止及び混信防止方法 |
KR100355684B1 (ko) * | 1992-11-26 | 2002-12-11 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 직접변환수신기 |
US5613234A (en) * | 1994-10-28 | 1997-03-18 | Lucent Technologies Inc. | Receive filter using frequency translation for or in cellular telephony base station |
US5548244A (en) * | 1994-11-14 | 1996-08-20 | Hughes Aircraft Company | Method and apparatus for eliminating DC offset for digital I/Q demodulators |
FR2760535B1 (fr) * | 1997-03-04 | 1999-05-28 | Thomson Csf | Dispositif de reduction de bruit dans un recepteur radar |
US6005506A (en) * | 1997-12-09 | 1999-12-21 | Qualcomm, Incorporated | Receiver with sigma-delta analog-to-digital converter for sampling a received signal |
KR100344469B1 (ko) * | 1997-12-27 | 2002-09-18 | 주식회사 만도 | 앤티록 브레이크 시스템의 휠압력 제어방법 |
US6208875B1 (en) * | 1998-04-08 | 2001-03-27 | Conexant Systems, Inc. | RF architecture for cellular dual-band telephones |
US6922555B1 (en) * | 1999-09-02 | 2005-07-26 | Koninklijke Philips Electronics N.V. | Phase interpolation receiver for angle modulated RF signals |
-
1999
- 1999-11-29 EP EP99204014A patent/EP1011191B1/fr not_active Expired - Lifetime
- 1999-11-29 DE DE69940251T patent/DE69940251D1/de not_active Expired - Lifetime
- 1999-12-03 US US09/454,346 patent/US6545569B1/en not_active Expired - Lifetime
- 1999-12-04 CN CNB99115990XA patent/CN1146109C/zh not_active Expired - Fee Related
- 1999-12-06 JP JP34674999A patent/JP4494565B2/ja not_active Expired - Fee Related
- 1999-12-07 KR KR1019990055572A patent/KR100701488B1/ko not_active IP Right Cessation
-
2000
- 2000-01-13 TW TW089100471A patent/TW445700B/zh not_active IP Right Cessation
-
2003
- 2003-02-05 US US10/359,504 patent/US7058382B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US7058382B2 (en) | 2006-06-06 |
CN1260635A (zh) | 2000-07-19 |
US6545569B1 (en) | 2003-04-08 |
JP4494565B2 (ja) | 2010-06-30 |
US20030124981A1 (en) | 2003-07-03 |
TW445700B (en) | 2001-07-11 |
DE69940251D1 (de) | 2009-02-26 |
EP1011191A1 (fr) | 2000-06-21 |
EP1011191B1 (fr) | 2009-01-07 |
KR20000052431A (ko) | 2000-08-25 |
KR100701488B1 (ko) | 2007-04-02 |
JP2000209065A (ja) | 2000-07-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: NXP CO., LTD. Free format text: FORMER OWNER: ROYAL PHILIPS ELECTRONICS CO., LTD. Effective date: 20070831 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20070831 Address after: Holland Ian Deho Finn Patentee after: Koninkl Philips Electronics NV Address before: Holland Ian Deho Finn Patentee before: Koninklike Philips Electronics N. V. |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040414 Termination date: 20171204 |
|
CF01 | Termination of patent right due to non-payment of annual fee |