DE69011891D1 - Automatischer Regelkreis für ein analoges Filter. - Google Patents

Automatischer Regelkreis für ein analoges Filter.

Info

Publication number
DE69011891D1
DE69011891D1 DE69011891T DE69011891T DE69011891D1 DE 69011891 D1 DE69011891 D1 DE 69011891D1 DE 69011891 T DE69011891 T DE 69011891T DE 69011891 T DE69011891 T DE 69011891T DE 69011891 D1 DE69011891 D1 DE 69011891D1
Authority
DE
Germany
Prior art keywords
automatic control
control loop
analog filter
analog
filter
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
DE69011891T
Other languages
English (en)
Other versions
DE69011891T2 (de
Inventor
Yasumi Imagawa
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Publication of DE69011891D1 publication Critical patent/DE69011891D1/de
Application granted granted Critical
Publication of DE69011891T2 publication Critical patent/DE69011891T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/16—Automatic control
    • H03G5/24—Automatic control in frequency-selective amplifiers
    • 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
DE69011891T 1989-02-16 1990-02-15 Automatischer Regelkreis für ein analoges Filter. Expired - Fee Related DE69011891T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1036480A JPH0693594B2 (ja) 1989-02-16 1989-02-16 アナログフィルタの自動調整回路

Publications (2)

Publication Number Publication Date
DE69011891D1 true DE69011891D1 (de) 1994-10-06
DE69011891T2 DE69011891T2 (de) 1995-02-02

Family

ID=12470981

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69011891T Expired - Fee Related DE69011891T2 (de) 1989-02-16 1990-02-15 Automatischer Regelkreis für ein analoges Filter.

Country Status (5)

Country Link
US (1) US5179727A (de)
EP (1) EP0383325B1 (de)
JP (1) JPH0693594B2 (de)
KR (1) KR940000700B1 (de)
DE (1) DE69011891T2 (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5124593A (en) * 1990-09-26 1992-06-23 National Semiconductor Corporation Continuous-time filter tuning circuit and method
JP3084196B2 (ja) * 1994-12-27 2000-09-04 アイコム株式会社 無線通信機
US5739874A (en) * 1995-06-06 1998-04-14 Thomson Consumer Electronics, Inc. Tuning system for a digital satellite receiver with fine tuning provisions
US5608665A (en) * 1995-10-03 1997-03-04 Wyszynski; Adam S. Self-tuned, continuous-time active filter
JP2001119268A (ja) * 1999-10-21 2001-04-27 Matsushita Electric Ind Co Ltd フィルタ調整方法及びフィルタ調整装置
SE519372C2 (sv) * 2001-03-09 2003-02-18 Nat Semiconductor Corp Metod och krets för filtertrimning
JP4282490B2 (ja) * 2004-01-06 2009-06-24 パナソニック株式会社 フィルタ自動調整装置及び通信機
KR100562043B1 (ko) 2005-07-27 2006-03-17 한국화학연구원 금속 분리막의 제조방법
US7924068B2 (en) * 2005-11-29 2011-04-12 Nec Corporation Automatic adjustment circuit, and filter circuit
JP4768426B2 (ja) * 2005-12-12 2011-09-07 株式会社リコー フィルタの自動調整装置
CN100439926C (zh) * 2006-03-31 2008-12-03 北京万工科技有限公司 用于洛高夫斯基(Rogowski)线圈的积分器及其实现方法
DE102006047316A1 (de) * 2006-10-06 2008-04-10 Pfannenberg Gmbh Filterlüfter
US9806790B2 (en) 2010-03-29 2017-10-31 Odyssey Wireless, Inc. Systems/methods of spectrally efficient communications
US9350401B2 (en) 2010-08-30 2016-05-24 Physical Devices, Llc Tunable filter devices and methods
US9042857B2 (en) 2010-08-30 2015-05-26 Physical Devices, Llc Methods, systems, and non-transitory computer readable media for wideband frequency and bandwidth tunable filtering
US8666347B2 (en) 2010-10-14 2014-03-04 Physical Devices, Llc Methods and devices for reducing radio frequency interference
EP2766999A4 (de) * 2011-10-13 2015-10-28 Physical Devices Llc Verfahren, systeme und übergangsloses computerlesbares medium für breitband-frequenzen und filterung mit einstellbarer bandbreite
CN104136936A (zh) 2012-02-28 2014-11-05 物理设备有限责任公司 用于减轻全球定位系统(gps)信号的带内干扰的方法、系统和计算机可读介质
US20150244431A1 (en) 2014-02-21 2015-08-27 Physical Devices, Llc Devices and methods for diversity signal enhancement and cosite cancellation

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2964712A (en) * 1959-09-29 1960-12-13 Gulf Research Development Co Automatically tuned notch filter
US3473128A (en) * 1966-12-20 1969-10-14 Vari L Co Inc Automatic ganging of superheterodyne radio frequency stages
US3867712A (en) * 1972-06-28 1975-02-18 Honeywell Inc Adaptive filter
US4192970A (en) * 1977-01-31 1980-03-11 Kahn Leonard R Reduction of adjacent channel interference
JPS5668014A (en) * 1979-11-08 1981-06-08 Trio Kenwood Corp Tracking filter
JPS622038B2 (de) * 1979-12-26 1987-01-17 Daiyamondo Shamurotsuku Tekunorojiizu Sa
JPS59122089A (ja) * 1982-12-28 1984-07-14 Pioneer Electronic Corp テレビジョン帯域補正装置
JPS60214617A (ja) * 1984-04-11 1985-10-26 Hitachi Ltd フイルタ集積回路
JPH0724012B2 (ja) * 1985-06-26 1995-03-15 富士通株式会社 印鑑登録装置
US4816770A (en) * 1987-07-10 1989-03-28 Satellite Transmission Systems Adaptive FM threshold extension demodulator
JPH0335612A (ja) * 1989-06-30 1991-02-15 Clarion Co Ltd Ｆｍ復調回路

Also Published As

Publication number Publication date
EP0383325A3 (de) 1991-01-16
DE69011891T2 (de) 1995-02-02
US5179727A (en) 1993-01-12
JPH02215215A (ja) 1990-08-28
EP0383325A2 (de) 1990-08-22
EP0383325B1 (de) 1994-08-31
KR940000700B1 (ko) 1994-01-27
KR900013711A (ko) 1990-09-06
JPH0693594B2 (ja) 1994-11-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee