CN100365941C - 处理调幅信号的方法和设备 - Google Patents

处理调幅信号的方法和设备 Download PDF

Info

Publication number
CN100365941C
CN100365941C CNB03825140XA CN03825140A CN100365941C CN 100365941 C CN100365941 C CN 100365941C CN B03825140X A CNB03825140X A CN B03825140XA CN 03825140 A CN03825140 A CN 03825140A CN 100365941 C CN100365941 C CN 100365941C
Authority
CN
China
Prior art keywords
filter
demodulator
post
signal
filters
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
Application number
CNB03825140XA
Other languages
English (en)
Chinese (zh)
Other versions
CN1703835A (zh
Inventor
乔恩·汉德里克斯
布拉德雷·苯克斯
查尔斯·E·希博尔格
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NXP USA Inc
Original Assignee
Freescale Semiconductor Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Freescale Semiconductor Inc filed Critical Freescale Semiconductor Inc
Publication of CN1703835A publication Critical patent/CN1703835A/zh
Application granted granted Critical
Publication of CN100365941C publication Critical patent/CN100365941C/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0294—Variable filters; Programmable filters
    • 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
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • H04B1/1036—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal with automatic suppression of narrow band noise or interference, e.g. by using tuneable notch filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Noise Elimination (AREA)
CNB03825140XA 2002-11-14 2003-08-22 处理调幅信号的方法和设备 Expired - Fee Related CN100365941C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/294,511 2002-11-14
US10/294,511 US7092465B2 (en) 2002-11-14 2002-11-14 Method and apparatus for processing an amplitude modulated (AM) signal

Publications (2)

Publication Number Publication Date
CN1703835A CN1703835A (zh) 2005-11-30
CN100365941C true CN100365941C (zh) 2008-01-30

Family

ID=32296991

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB03825140XA Expired - Fee Related CN100365941C (zh) 2002-11-14 2003-08-22 处理调幅信号的方法和设备

Country Status (6)

Country Link
US (1) US7092465B2 (https=)
JP (1) JP4235175B2 (https=)
KR (1) KR100988450B1 (https=)
CN (1) CN100365941C (https=)
AU (1) AU2003268370A1 (https=)
WO (1) WO2004045095A1 (https=)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7076233B2 (en) * 2003-03-28 2006-07-11 Sandbridge Technologies, Inc. AM receiver and demodulator
US7031886B1 (en) * 2004-12-14 2006-04-18 Synaptics Incorporated Methods and systems for detecting noise in a position sensor using minor shifts in sensing frequency
US8098722B2 (en) * 2005-03-29 2012-01-17 Qualcomm Incorporated Method and apparatus for equalization control
US7801311B2 (en) * 2005-09-15 2010-09-21 Freescale Semiconductor, Inc. Radio receiver with stereo decoder and method for use therewith
WO2008048873A2 (en) * 2006-10-13 2008-04-24 Continental Automotive Systems Us, Inc. Radio front end
US8352202B2 (en) * 2009-06-23 2013-01-08 Synaptics Incorporated System and method for detecting interfernce in a sensor device using phase shifting
US8812571B2 (en) * 2011-05-12 2014-08-19 Telefonaktiebolaget L M Ericsson (Publ) Spectrum agile radio
CN106094509B (zh) * 2016-06-22 2019-12-06 广东电网有限责任公司电力科学研究院 一种lcr滤波控制方法及装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04271511A (ja) * 1990-09-18 1992-09-28 Alcatel Nv ４チャンネルデシメータ
US5155862A (en) * 1987-04-15 1992-10-13 H.U.C. Elektronik Gmbh Fm receiver having variable if filter
EP0786887A1 (fr) * 1996-01-29 1997-07-30 ALCATEL ITALIA S.p.A. Procédé de compensation des différences en temps de propagation de groupe entre les filtres analogiques d'un émetteur ou d'un récepteur de signaux en quadrature de phase
US5789993A (en) * 1995-06-14 1998-08-04 Alcatel N.V. Amplitude/frequency correcting device and corresponding frequency equalizer
CN1234655A (zh) * 1998-03-13 1999-11-10 株式会社建伍 去除调幅邻近干扰的方法及去除电路
US20020136289A1 (en) * 1999-02-08 2002-09-26 Sunil Shukla Method of slewing a digital filter providing filter sections with matched gain

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3760287A (en) 1971-08-28 1973-09-18 Bell Telephone Labor Inc Digitally controllable variable active rc filter
DE4319457C2 (de) 1993-06-11 1997-09-04 Blaupunkt Werke Gmbh Schaltungsanordnung zur Nachbarkanalerkennung und -unterdrückung in einem FM-Rundfunkempfänger
JPH10313260A (ja) * 1997-05-13 1998-11-24 Matsushita Electric Ind Co Ltd 受信装置
US6591091B1 (en) * 1998-11-12 2003-07-08 Broadcom Corporation System and method for coarse/fine PLL adjustment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5155862A (en) * 1987-04-15 1992-10-13 H.U.C. Elektronik Gmbh Fm receiver having variable if filter
JPH04271511A (ja) * 1990-09-18 1992-09-28 Alcatel Nv ４チャンネルデシメータ
US5789993A (en) * 1995-06-14 1998-08-04 Alcatel N.V. Amplitude/frequency correcting device and corresponding frequency equalizer
EP0786887A1 (fr) * 1996-01-29 1997-07-30 ALCATEL ITALIA S.p.A. Procédé de compensation des différences en temps de propagation de groupe entre les filtres analogiques d'un émetteur ou d'un récepteur de signaux en quadrature de phase
CN1234655A (zh) * 1998-03-13 1999-11-10 株式会社建伍 去除调幅邻近干扰的方法及去除电路
US20020136289A1 (en) * 1999-02-08 2002-09-26 Sunil Shukla Method of slewing a digital filter providing filter sections with matched gain

Also Published As

Publication number Publication date
US20040096014A1 (en) 2004-05-20
US7092465B2 (en) 2006-08-15
AU2003268370A1 (en) 2004-06-03
KR100988450B1 (ko) 2010-10-18
KR20050086615A (ko) 2005-08-30
CN1703835A (zh) 2005-11-30
JP2006506850A (ja) 2006-02-23
JP4235175B2 (ja) 2009-03-11
WO2004045095A1 (en) 2004-05-27

Similar Documents

Publication Publication Date Title
JP3122793B2 (ja) 同一チャネル干渉を低減する方法および非線形フィルタ
JP4232862B2 (ja) 雑音除去方法及び雑音除去装置
JP3178997B2 (ja) 周波数変換回路およびこの周波数変換回路を備えた無線通信装置
JPH08506711A (ja) 適応型帯域幅受信機
JP2829605B2 (ja) ディジタル無線周波受信機
JPH11513550A (ja) 同一チャネル干渉を減少させる方法
JP2003518814A (ja) 零−ｉｆ又は低−ｉｆ受信機のための高ダイナミックレンジ低リップルｒｓｓｉ信号
CN100463372C (zh) 带有可变带宽中频滤波器的无线电接收机
JP3276392B2 (ja) 時間離散型ステレオデコーダ
CN100365941C (zh) 处理调幅信号的方法和设备
JPH0311814A (ja) Ｓｓｂ変調装置及びｓｓｂ復調装置
CN105229928B (zh) 用于信号质量估计和控制的方法及电路
JPH07162383A (ja) Ｆｍステレオ放送装置
JPH06103842B2 (ja) プロセッサを用いた圧縮伸長通信装置
US7010063B2 (en) Receiver circuit and method of processing a received signal
JP2003298456A (ja) ソフトウェア無線機及びソフトウェア無線機の信号処理方法
CN100571229C (zh) 提高数字中频接收机抗2×2阶干扰能力的方法及电路
CN101253681B (zh) 解调器以及解调方法
JP3422484B2 (ja) 復調回路及びそれを有する受信装置
CN108344976B (zh) 窄带信号的硬件降频采样方法及系统、数字信号处理系统
JP3893197B2 (ja) デジタル変調回路
US20080169871A1 (en) Method and device for the filtering and analogue/digital conversion of analogue signal
JP6311406B2 (ja) 逆特性フィルタおよびそれを用いる無線受信機
JP2006129201A (ja) 無線受信装置
JPH0856207A (ja) Ｆｍ多重放送受信装置

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
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080130

Termination date: 20180822

CF01 Termination of patent right due to non-payment of annual fee