JP2005223439A - 周波数設定回路 - Google Patents

周波数設定回路 Download PDF

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Publication number
JP2005223439A
JP2005223439A JP2004027051A JP2004027051A JP2005223439A JP 2005223439 A JP2005223439 A JP 2005223439A JP 2004027051 A JP2004027051 A JP 2004027051A JP 2004027051 A JP2004027051 A JP 2004027051A JP 2005223439 A JP2005223439 A JP 2005223439A
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JP
Japan
Prior art keywords
filter
phase
frequency
circuit
ota
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.)
Pending
Application number
JP2004027051A
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English (en)
Japanese (ja)
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JP2005223439A5 (enExample
Inventor
Katsuharu Kimura
克治 木村
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.)
NEC Electronics Corp
Original Assignee
NEC Electronics Corp
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 NEC Electronics Corp filed Critical NEC Electronics Corp
Priority to JP2004027051A priority Critical patent/JP2005223439A/ja
Priority to US11/045,358 priority patent/US7180364B2/en
Publication of JP2005223439A publication Critical patent/JP2005223439A/ja
Publication of JP2005223439A5 publication Critical patent/JP2005223439A5/ja
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/0805—Details of the phase-locked loop the loop being adapted to provide an additional control signal for use outside the loop
    • 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
    • H03H11/0422—Frequency selective two-port networks using transconductance amplifiers, e.g. gmC filters
    • H03H11/0472—Current or voltage controlled filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/081—Details of the phase-locked loop provided with an additional controlled phase shifter
    • H03L7/0812—Details of the phase-locked loop provided with an additional controlled phase shifter and where no voltage or current controlled oscillator is used
    • H03L7/0816—Details of the phase-locked loop provided with an additional controlled phase shifter and where no voltage or current controlled oscillator is used the controlled phase shifter and the frequency- or phase-detection arrangement being connected to a common input

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  • Networks Using Active Elements (AREA)
JP2004027051A 2004-02-03 2004-02-03 周波数設定回路 Pending JP2005223439A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2004027051A JP2005223439A (ja) 2004-02-03 2004-02-03 周波数設定回路
US11/045,358 US7180364B2 (en) 2004-02-03 2005-01-31 Filter apparatus including slave gm-C filter with frequency characteristics automatically tuned by master circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004027051A JP2005223439A (ja) 2004-02-03 2004-02-03 周波数設定回路

Publications (2)

Publication Number Publication Date
JP2005223439A true JP2005223439A (ja) 2005-08-18
JP2005223439A5 JP2005223439A5 (enExample) 2006-11-09

Family

ID=34805859

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004027051A Pending JP2005223439A (ja) 2004-02-03 2004-02-03 周波数設定回路

Country Status (2)

Country Link
US (1) US7180364B2 (enExample)
JP (1) JP2005223439A (enExample)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007251942A (ja) * 2006-03-14 2007-09-27 Princeton Technology Corp フィルターの中心周波数を自動的に校正できる校正ループ、フィルター回路及び関連方法
KR100853526B1 (ko) * 2007-02-23 2008-08-21 충북대학교 산학협력단 저역 통과 필터에 의해 이득 제어가 이루어지는 무선수신기
US7860192B2 (en) 2006-03-14 2010-12-28 Princeton Technology Corporation FSK demodulator, FM demodulator, and related method with a build-in band-pass filter
JP2011160279A (ja) * 2010-02-02 2011-08-18 Rohm Co Ltd 位相ロックループ回路およびそれを用いた電子機器

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3922261B2 (ja) * 2004-03-08 2007-05-30 セイコーエプソン株式会社 データドライバ及び表示装置
FR2878665B1 (fr) * 2004-11-30 2007-05-25 St Microelectronics Rousset Circuit amplificateur a transconductance a gain negatif
US7583948B2 (en) * 2005-04-28 2009-09-01 Kabushiki Kaisha Toshiba Time constant automatic adjusting circuit, filter circuit system, and method of automatically adjusting time constant
US7496865B2 (en) * 2005-05-20 2009-02-24 Chung Yuan Christian University OTA-based high-order filters
JP2007214800A (ja) * 2006-02-08 2007-08-23 Nec Electronics Corp 複素フィルタ回路
US20070194839A1 (en) * 2006-02-23 2007-08-23 Anadigics, Inc. Tunable balanced loss compensation in an electronic filter
WO2008151998A1 (en) * 2007-06-12 2008-12-18 Thomson Licensing Improvement to the precision/speed compromise of a synchronization signal reception device
US7852152B2 (en) * 2008-08-28 2010-12-14 Menara Networks Nth order tunable low-pass continuous time filter for fiber optic receivers
US20110090020A1 (en) * 2009-10-15 2011-04-21 Reeser Glen O Voltage Controlled SAW Oscillator with Phase Shifter
US8410962B2 (en) * 2011-01-19 2013-04-02 Analog Devices, Inc. Active RC resonators with enhanced Q factor
JP2013219569A (ja) 2012-04-10 2013-10-24 Seiko Epson Corp トランスコンダクタンス調整回路、回路装置及び電子機器
JP2013236204A (ja) * 2012-05-08 2013-11-21 Seiko Epson Corp 回路装置及び電子機器
US8760222B2 (en) 2012-09-24 2014-06-24 Motorola Mobility Llc Method and apparatus for controlling or managing bandwidth of a filter circuit within a system having two integrated circuits
CN108418568B (zh) * 2018-01-26 2021-05-14 超越科技股份有限公司 一种电流复用式低通滤波器
US12231048B2 (en) 2022-01-11 2025-02-18 Mediatek Inc. Apparatus and method for controlling transient boost circuit of voltage regulator through feedback signals obtained by differential sensing applied to output capacitor

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5117205A (en) * 1990-05-01 1992-05-26 U.S. Philips Corporation Electrically controllable oscillator circuit, and electrically controllable filter arrangement comprising said circuits
KR100312623B1 (ko) * 1993-02-26 2001-12-28 이데이 노부유끼 액티브필터회로장치
JP3318725B2 (ja) * 1994-01-12 2002-08-26 株式会社日立製作所 アナログフィルタ回路
US5625317A (en) * 1994-08-08 1997-04-29 Texas Instruments Incorporated Tuning method for integrated continuous-time filters
US6112125A (en) * 1995-03-08 2000-08-29 Silicon Systems, Inc. Self-tuning method and apparatus for continuous-time filters
JPH09320199A (ja) 1996-06-03 1997-12-12 Hitachi Ltd アナログフィルタおよびこれを用いた信号処理用半導体集積回路、記録再生装置、伝送送受信装置
GB9704719D0 (en) * 1997-03-07 1997-04-23 Plessey Semiconductors Ltd Frequency tracking arrangements
US6873205B1 (en) * 2000-10-27 2005-03-29 The Trustees Of Columbia University In The City Of New York Active continuous-time filter with increased dynamic range in the presence of blocker signals
DE10122831A1 (de) * 2001-05-11 2002-11-14 Philips Corp Intellectual Pty Integriertes geregeltes DVB-Filter
US7400190B2 (en) * 2002-09-05 2008-07-15 Nxp B.V. Self calibration of continuous-time filters and systems comprising such filters

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007251942A (ja) * 2006-03-14 2007-09-27 Princeton Technology Corp フィルターの中心周波数を自動的に校正できる校正ループ、フィルター回路及び関連方法
US7860192B2 (en) 2006-03-14 2010-12-28 Princeton Technology Corporation FSK demodulator, FM demodulator, and related method with a build-in band-pass filter
KR100853526B1 (ko) * 2007-02-23 2008-08-21 충북대학교 산학협력단 저역 통과 필터에 의해 이득 제어가 이루어지는 무선수신기
JP2011160279A (ja) * 2010-02-02 2011-08-18 Rohm Co Ltd 位相ロックループ回路およびそれを用いた電子機器

Also Published As

Publication number Publication date
US7180364B2 (en) 2007-02-20
US20050168274A1 (en) 2005-08-04

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