DE69708516T2 - Bipolare npn-schaltungstopographie für abstimmbare transkonduktanzzelle und positive stromquelle - Google Patents

Bipolare npn-schaltungstopographie für abstimmbare transkonduktanzzelle und positive stromquelle

Info

Publication number
DE69708516T2
DE69708516T2 DE69708516T DE69708516T DE69708516T2 DE 69708516 T2 DE69708516 T2 DE 69708516T2 DE 69708516 T DE69708516 T DE 69708516T DE 69708516 T DE69708516 T DE 69708516T DE 69708516 T2 DE69708516 T2 DE 69708516T2
Authority
DE
Germany
Prior art keywords
transconductive
topography
tunable
cell
power source
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
DE69708516T
Other languages
English (en)
Other versions
DE69708516D1 (de
Inventor
Gopal Raghavan
F Jensen
E Cosand
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.)
DirecTV Group Inc
Original Assignee
Hughes 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 Hughes Electronics Corp filed Critical Hughes Electronics Corp
Publication of DE69708516D1 publication Critical patent/DE69708516D1/de
Application granted granted Critical
Publication of DE69708516T2 publication Critical patent/DE69708516T2/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
    • H03H11/0422—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
    • H03H11/0444—Simulation of ladder networks
DE69708516T 1996-01-17 1997-01-17 Bipolare npn-schaltungstopographie für abstimmbare transkonduktanzzelle und positive stromquelle Expired - Fee Related DE69708516T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/588,665 US5726600A (en) 1996-01-17 1996-01-17 NPN bipolar circuit topology for a tunable transconductance cell and positive current source
PCT/US1997/000624 WO1997026706A1 (en) 1996-01-17 1997-01-17 Npn bipolar circuit topology for a tunable transconductance cell and positive current source

Publications (2)

Publication Number Publication Date
DE69708516D1 DE69708516D1 (de) 2002-01-10
DE69708516T2 true DE69708516T2 (de) 2002-07-11

Family

ID=24354790

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69708516T Expired - Fee Related DE69708516T2 (de) 1996-01-17 1997-01-17 Bipolare npn-schaltungstopographie für abstimmbare transkonduktanzzelle und positive stromquelle

Country Status (6)

Country Link
US (2) US5726600A (de)
EP (1) EP0815643B1 (de)
JP (1) JPH10504171A (de)
CA (1) CA2212492C (de)
DE (1) DE69708516T2 (de)
WO (1) WO1997026706A1 (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5953379A (en) * 1996-02-23 1999-09-14 Harris Corporation Current-controlled carrier tracking filter for improved spurious signal suppression
EP1014573B1 (de) 1998-12-17 2004-07-14 STMicroelectronics S.r.l. Tiefpassfilterstruktur mit analoger Entzerrung
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
US6172566B1 (en) * 1999-02-17 2001-01-09 Kabushiki Kaisha Toshiba Low noise amplifier
US6329865B1 (en) 1999-03-18 2001-12-11 Maxim Integrated Products, Inc. Linearized transconductance cell
WO2001026218A1 (en) * 1999-10-06 2001-04-12 Tripath Technology Inc. Programmable gain feedback amplifier and method for maintaining constant phase
AU2001268155A1 (en) * 2000-06-02 2001-12-17 Connectcom Microsystems, Inc. High frequency network receiver
KR100869433B1 (ko) * 2001-01-18 2008-11-21 엔엑스피 비 브이 전자 필터 회로 및 이 회로를 포함하는 반도체 칩
US7525346B2 (en) * 2002-07-11 2009-04-28 Mindspeed Technologies, Inc. Driver circuits and methods
US6600373B1 (en) 2002-07-31 2003-07-29 Agere Systems, Inc. Method and circuit for tuning a transconductance amplifier
US7180369B1 (en) * 2003-05-15 2007-02-20 Marvell International Ltd. Baseband filter start-up circuit
TWI283512B (en) * 2004-07-08 2007-07-01 Via Tech Inc Transconductance filtering circuit
US7068104B2 (en) * 2004-07-08 2006-06-27 Amalfi Semiconductor, Inc. Power amplifier utilizing high breakdown voltage circuit topology
JP2006311419A (ja) * 2005-05-02 2006-11-09 Nec Electronics Corp 信号出力回路
US7348911B2 (en) * 2006-08-08 2008-03-25 Atmel Corporation Common mode management between a current-steering DAC and transconductance filter in a transmission system
US8760144B2 (en) * 2010-06-28 2014-06-24 Wuxi Vimicro Corporation Multiple-input comparator and power converter
US8730690B2 (en) * 2010-11-30 2014-05-20 General Electric Company Systems and apparatus for reducing electromagnetic interference and methods of assembling the same
US8552788B2 (en) 2011-09-15 2013-10-08 Analog Devices, Inc. Apparatus and methods for adaptive common-mode level shifting
US8432222B2 (en) * 2011-09-15 2013-04-30 Analog Devices, Inc. Apparatus and methods for electronic amplification
US9748911B2 (en) * 2016-01-08 2017-08-29 Elite Semiconductor Memory Technology Inc. Variable gain amplifying circuit

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4857928A (en) * 1988-01-28 1989-08-15 Motorola, Inc. Method and arrangement for a sigma delta converter for bandpass signals
US5157350A (en) * 1991-10-31 1992-10-20 Harvey Rubens Analog multipliers
US5315231A (en) * 1992-11-16 1994-05-24 Hughes Aircraft Company Symmetrical bipolar bias current source with high power supply rejection ratio (PSRR)
US5371475A (en) * 1993-06-03 1994-12-06 Northern Telecom Limited Low noise oscillators and tracking filters
US5491447A (en) * 1994-05-13 1996-02-13 International Business Machines Corporation Operational transconductance amplifier with independent transconductance and common mode feedback control
US5614864A (en) * 1995-09-29 1997-03-25 Rockwell Science Center, Inc. Single-ended to differential converter with relaxed common-mode input requirements

Also Published As

Publication number Publication date
EP0815643B1 (de) 2001-11-28
WO1997026706A1 (en) 1997-07-24
CA2212492A1 (en) 1997-07-24
DE69708516D1 (de) 2002-01-10
US5726600A (en) 1998-03-10
JPH10504171A (ja) 1998-04-14
CA2212492C (en) 2000-10-31
US5812020A (en) 1998-09-22
EP0815643A1 (de) 1998-01-07

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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