FI933310A - Frekvensinstaellninssystem foer ett ota-c-par - Google Patents

Frekvensinstaellninssystem foer ett ota-c-par Download PDF

Info

Publication number: FI933310A
Authority: FI; Finland
Prior art keywords: frekvensinstaellninssystem; ota; par; foer ett; ett
Prior art date: 1992-07-24

Application number

FI933310A

Other languages

English (en)

Other versions

FI108585B (fi

FI933310A0 (fi

Inventor

Johannes Mathilda Jo Sevenhans

Paemel Mark Gerrit Steven Van

Original Assignee

Alcatel Nv

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.)

1992-07-24

Filing date

1993-07-22

Publication date

1994-01-25

1993-07-22 Application filed by Alcatel Nv filed Critical Alcatel Nv

1993-07-22 Publication of FI933310A0 publication Critical patent/FI933310A0/fi

1994-01-25 Publication of FI933310A publication Critical patent/FI933310A/fi

2002-02-15 Application granted granted Critical

2002-02-15 Publication of FI108585B publication Critical patent/FI108585B/fi

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
- H03H11/0422—Frequency selective two-port networks using transconductance amplifiers, e.g. gmC filters
- H03H11/0472—Current or voltage controlled filters
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- 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
- H03H11/0433—Two integrator loop filters

FI933310A 1992-07-24 1993-07-22 Taajuusviritysjärjestelmä OTA-C-parille FI108585B (fi)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
EP92202293		1992-07-24
EP92202293A EP0579876B1 (en)	1992-07-24	1992-07-24	Frequency tuning system for an OTA-C pair

Publications (3)

Publication Number	Publication Date
FI933310A0 FI933310A0 (fi)	1993-07-22
FI933310A true FI933310A (fi)	1994-01-25
FI108585B FI108585B (fi)	2002-02-15

Family

ID=8210807

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI933310A FI108585B (fi)	1992-07-24	1993-07-22	Taajuusviritysjärjestelmä OTA-C-parille

Country Status (6)

Country	Link
US (1)	US5440264A (fi)
EP (1)	EP0579876B1 (fi)
JP (1)	JP3316038B2 (fi)
DE (1)	DE69226862T2 (fi)
ES (1)	ES2123538T3 (fi)
FI (1)	FI108585B (fi)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP3208975B2 (ja) *	1993-12-28	2001-09-17	株式会社日立製作所	アクティブフィルタ制御方式
US5625317A (en) *	1994-08-08	1997-04-29	Texas Instruments Incorporated	Tuning method for integrated continuous-time filters
DE69523281T2 (de) *	1995-02-10	2002-07-11	Alcatel, Paris	Linearer abstimmbarer Gm-C Integrator
US5650747A (en) *	1995-10-05	1997-07-22	Chen; Xiaole	Circuit technique for implementing programmable zeros in high speed CMOS filters
GB2307626B (en) *	1995-11-24	2000-06-07	Nokia Mobile Phones Ltd	A signal receiver
KR100187200B1 (ko) *	1996-07-12	1999-04-15	김광호	트랜스 컨덕턴스를 이용한 차단 주파수 안정화 장치
US6266522B1 (en)	1998-02-04	2001-07-24	Ericsson Inc.	Apparatus and methods for tuning bandpass filters
AU3485200A (en) *	1999-02-08	2000-08-25	Boris Briskin	Signal processing system using improved transconductance cell
US6287263B1 (en)	1999-02-08	2001-09-11	Cardiac Pacemakers, Inc.	System for processing bursted amplitude modulated signals using an impedance sensor
US6310512B1 (en)	1999-11-22	2001-10-30	Cardiac Pacemakers, Inc.	Integrated self-adjustable continuous time band pass filter based upon Gm cell with bipolar transistors
US6137375A (en) *	1999-05-28	2000-10-24	The Trustees Of Columbia University In The City Of New York	Loss control loop circuit for controlling the output voltage of a voltage-controlled oscillator
US6954774B1 (en) *	2001-12-20	2005-10-11	Rockwell Collins	Bandpass filter with ability to tune a pass frequency, passband gain and filter Q
US6600373B1 (en)	2002-07-31	2003-07-29	Agere Systems, Inc.	Method and circuit for tuning a transconductance amplifier
US7486338B1 (en)	2003-04-28	2009-02-03	Wyszynski Adam S	Fully integrated terrestrial TV tuner architecture
US6917252B1 (en)	2003-04-28	2005-07-12	Adam S. Wyszynski	Fully integrated automatically-tuned RF and IF active bandpass filters
US7098731B1 (en) *	2004-01-13	2006-08-29	Wyszynski Adam S	Synthesis method for an active polyphase filter
US7400212B1 (en)	2005-06-07	2008-07-15	Vishinsky Adam S	Self-tuned active bandpass filters
FR2892872B1 (fr) *	2005-11-02	2008-01-04	Atmel Corp	Filtre passe-bande complexe
US7463086B2 (en) *	2006-11-17	2008-12-09	O2Micro International Ltd.	Apparatus and method for tuning a band pass filter
US7622991B2 (en) *	2007-08-22	2009-11-24	Don Roy Sauer	Transconductance signal capacity format
US8390371B2 (en) *	2010-07-30	2013-03-05	Tialinx, Inc.	Tunable transconductance-capacitance filter with coefficients independent of variations in process corner, temperature, and input supply voltage

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3528040A (en) *	1968-12-12	1970-09-08	Aerospace Res	Electronically variable filter
US4340868A (en) *	1980-05-12	1982-07-20	Motorola, Inc.	Current mode biquadratic active filter
NL8401370A (nl) *	1984-05-01	1985-12-02	Philips Nv	Filterschakeling.
JPH0648775B2 (ja) *	1989-05-24	1994-06-22	東光株式会社	リープフロッグ・フィルタ
US5117205A (en) *	1990-05-01	1992-05-26	U.S. Philips Corporation	Electrically controllable oscillator circuit, and electrically controllable filter arrangement comprising said circuits
JPH04211508A (ja) *	1990-06-15	1992-08-03	Toshiba Corp	積分回路
US5124593A (en) *	1990-09-26	1992-06-23	National Semiconductor Corporation	Continuous-time filter tuning circuit and method

1992
- 1992-07-24 EP EP92202293A patent/EP0579876B1/en not_active Expired - Lifetime
- 1992-07-24 ES ES92202293T patent/ES2123538T3/es not_active Expired - Lifetime
- 1992-07-24 DE DE69226862T patent/DE69226862T2/de not_active Expired - Fee Related
1993
- 1993-07-22 FI FI933310A patent/FI108585B/fi active
- 1993-07-26 JP JP18421293A patent/JP3316038B2/ja not_active Expired - Fee Related
1994
- 1994-12-07 US US08/350,705 patent/US5440264A/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
US5440264A (en)	1995-08-08
EP0579876A1 (en)	1994-01-26
ES2123538T3 (es)	1999-01-16
JP3316038B2 (ja)	2002-08-19
DE69226862D1 (de)	1998-10-08
FI108585B (fi)	2002-02-15
EP0579876B1 (en)	1998-09-02
FI933310A0 (fi)	1993-07-22
JPH06164312A (ja)	1994-06-10
DE69226862T2 (de)	1999-01-21

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