DE69628611D1 - Monolithischer HBT aktives abstimmbares Bandpassfilter - Google Patents
Monolithischer HBT aktives abstimmbares BandpassfilterInfo
- Publication number
- DE69628611D1 DE69628611D1 DE69628611T DE69628611T DE69628611D1 DE 69628611 D1 DE69628611 D1 DE 69628611D1 DE 69628611 T DE69628611 T DE 69628611T DE 69628611 T DE69628611 T DE 69628611T DE 69628611 D1 DE69628611 D1 DE 69628611D1
- Authority
- DE
- Germany
- Prior art keywords
- bandpass filter
- tunable bandpass
- active tunable
- monolithic
- hbt active
- 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 - Lifetime
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
- H03H11/10—Frequency selective two-port networks using negative impedance converters
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/46—One-port networks
- H03H11/52—One-port networks simulating negative resistances
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US420262 | 1982-09-20 | ||
US08/420,262 US5550520A (en) | 1995-04-11 | 1995-04-11 | Monolithic HBT active tuneable band-pass filter |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69628611D1 true DE69628611D1 (de) | 2003-07-17 |
DE69628611T2 DE69628611T2 (de) | 2004-04-15 |
Family
ID=23665752
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69628611T Expired - Lifetime DE69628611T2 (de) | 1995-04-11 | 1996-03-20 | Monolithischer HBT aktives abstimmbares Bandpassfilter |
Country Status (5)
Country | Link |
---|---|
US (1) | US5550520A (de) |
EP (1) | EP0738040B1 (de) |
JP (1) | JP3002641B2 (de) |
KR (1) | KR0184994B1 (de) |
DE (1) | DE69628611T2 (de) |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5752179A (en) * | 1995-08-17 | 1998-05-12 | Zenith Electronics Corporation | Selective RF circuit with varactor tuned and switched bandpass filters |
DE69618540T2 (de) * | 1995-10-31 | 2002-09-05 | Koninkl Philips Electronics Nv | Filtervorrichtung zur Verarbeitung einer Vielzahl von Kanälen in einem Kabelfernsehverteilungssystem |
US6764812B1 (en) * | 1996-06-25 | 2004-07-20 | Ronald M. Kubacki | Plasma deposited selective wetting material |
GB9804708D0 (en) * | 1998-03-05 | 1998-04-29 | Nec Technologies Uk Ltd | Radio transmitter/reciever channel selection |
US6307442B1 (en) * | 1999-05-17 | 2001-10-23 | Maxim Integrated Products | Enhanced LC filter with tunable Q |
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 |
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 |
US6356143B2 (en) * | 1999-11-01 | 2002-03-12 | Intreon Corporation | Method and apparatus for filtering radio frequency signals |
US6915146B1 (en) * | 2000-04-25 | 2005-07-05 | The Chamberlain Group, Inc. | Method and apparatus for receiving a plurality of different codes at a plurality of different frequencies |
DE60116111T2 (de) * | 2000-05-16 | 2006-11-02 | Chandler, Stephen Antony Gerard, Stroud | Rückgekoppelte hochfrequenzverstärker |
US6593828B1 (en) * | 2000-05-22 | 2003-07-15 | Globespanvirata, Inc. | System and method for filter tuning |
US6498535B1 (en) * | 2000-06-28 | 2002-12-24 | Trw Inc. | High dynamic range low noise amplifier |
JP2002223174A (ja) * | 2001-01-29 | 2002-08-09 | General Res Of Electronics Inc | 同調回路 |
US7012943B2 (en) | 2001-06-28 | 2006-03-14 | Northrop Grumman Corporation | Integration of amorphorous silicon transmit and receive structures with GaAs or InP processed devices |
US6778023B2 (en) * | 2001-07-31 | 2004-08-17 | Nokia Corporation | Tunable filter and method of tuning a filter |
JP2003060485A (ja) * | 2001-08-14 | 2003-02-28 | Sony Corp | 能動フィルタ回路 |
US7065384B2 (en) * | 2001-08-21 | 2006-06-20 | Hrl Laboratories, Llc | Networked and field addressable distributed antenna system |
US6944435B2 (en) * | 2002-06-03 | 2005-09-13 | Broadcom, Corp. | Unconditionally stable on-chip filter and applications thereof |
JP4305618B2 (ja) * | 2002-12-06 | 2009-07-29 | 日本電気株式会社 | 負性抵抗回路、及びアクティブフィルタ |
US7319731B2 (en) * | 2004-02-05 | 2008-01-15 | Broadcom Corporation | High precision continuous time gmC BPF tuning |
US7522017B1 (en) * | 2004-04-21 | 2009-04-21 | Sequoia Communications | High-Q integrated RF filters |
JP2006005485A (ja) * | 2004-06-15 | 2006-01-05 | Toshiba Corp | フィルタ制御装置とフィルタシステム |
CN1998207A (zh) * | 2004-07-19 | 2007-07-11 | 埃里耶勒公司 | 用于fm发射机的改进的rc滤波器极 |
US7161416B2 (en) * | 2004-07-20 | 2007-01-09 | Bae Systems Information And Electronic Systems Integration Inc. | Programmable filter |
KR100691284B1 (ko) | 2004-10-07 | 2007-03-12 | 한국전자통신연구원 | 부성 저항의 미세 조정이 가능한 전압 제어 발진기 |
EP1675263B1 (de) * | 2004-12-23 | 2009-10-07 | Lucent Technologies Inc. | Regelung der Güte (Q) von Filtern |
US7433668B2 (en) * | 2004-12-23 | 2008-10-07 | Lucent Technologies Inc. | Controlling Q-factor of filters |
US7760038B2 (en) * | 2005-12-07 | 2010-07-20 | Electronics And Telecommunications Research Institute | Voltage controlled oscillator capable of tuning negative resistance |
US7508096B1 (en) * | 2007-09-20 | 2009-03-24 | General Electric Company | Switching circuit apparatus having a series conduction path for servicing a load and switching method |
US20090086795A1 (en) * | 2007-09-28 | 2009-04-02 | Ahmadreza Rofougaran | Method and system for a low-complexity variable frequency oscillator using direct digital frequency synthesis |
US8606211B2 (en) * | 2009-06-23 | 2013-12-10 | Qualcomm Incorporated | High dynamic range receiver front-end with Q-enhancement |
US8538367B2 (en) * | 2009-06-29 | 2013-09-17 | Qualcomm Incorporated | Buffer circuit with integrated loss canceling |
SG10202004720SA (en) * | 2015-11-23 | 2020-06-29 | Anlotek Ltd | Variable filter |
CN112928997A (zh) * | 2021-01-29 | 2021-06-08 | 重庆邮电大学 | 基于可调有源带通滤波器的GaN后失真高线性度功率放大器 |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL132872C (de) * | 1959-10-29 | |||
US3458715A (en) * | 1967-10-24 | 1969-07-29 | Us Army | Exponential generator utilizing a four-layer diode-capacitor arrangement |
SE348337B (de) * | 1968-05-10 | 1972-08-28 | B Henoch | |
US3594593A (en) * | 1969-05-02 | 1971-07-20 | Stanford Research Inst | Active impedance matching of microwave acoustic devices |
US3680011A (en) * | 1970-08-03 | 1972-07-25 | Stanford Research Inst | Loss cancelling resonator and filters |
US3693105A (en) * | 1971-01-18 | 1972-09-19 | Nasa | Active tuned circuit |
US3835399A (en) * | 1972-01-24 | 1974-09-10 | R Holmes | Adjustable electronic tunable filter with simulated inductor |
US3974399A (en) * | 1974-05-09 | 1976-08-10 | Yagi Antenna Co., Ltd. | Active high Q filter using transistor |
US4028562A (en) * | 1975-06-16 | 1977-06-07 | Mcdonnell Douglas Corporation | Negative impedance transistor device |
US3965441A (en) * | 1975-06-20 | 1976-06-22 | Trw Inc. | Parallel resonant circuit with feedback means for increasing Q |
US4257055A (en) * | 1979-07-26 | 1981-03-17 | University Of Illinois Foundation | Negative resistance heterojunction devices |
JPS5791334U (de) * | 1980-11-21 | 1982-06-05 | ||
US4409557A (en) * | 1981-04-23 | 1983-10-11 | Rca Corporation | Bandpass filter with an active element |
JPS61196625A (ja) * | 1985-02-26 | 1986-08-30 | Sony Corp | オ−トダイン受信機 |
US4754497A (en) * | 1986-04-14 | 1988-06-28 | Canadian Patents And Development Limited | FM receivers using three-terminal negative admittance networks or two and three-terminal negative admittance networks |
US4816788A (en) * | 1986-07-01 | 1989-03-28 | Murata Manufacturing Co., Ltd. | High frequency band-pass filter |
US4740716A (en) * | 1986-12-29 | 1988-04-26 | General Instrument Corp. | Monolithic high Q varactor circuit |
JPS63224358A (ja) * | 1987-03-13 | 1988-09-19 | Toshiba Corp | 高周波用パワ−増幅器 |
US4990872A (en) * | 1987-06-17 | 1991-02-05 | Sanyo Electric Co., Ltd. | Variable reactance circuit producing negative to positive varying reactance |
US4875019A (en) * | 1988-07-21 | 1989-10-17 | Bahr Technologies, Inc. | Receiver preamplifier with tuned circuit adapted for Loran reception |
US5339057A (en) * | 1993-02-26 | 1994-08-16 | The United States Of America As Represented By The Secretary Of The Navy | Limited bandwidth microwave filter |
-
1995
- 1995-04-11 US US08/420,262 patent/US5550520A/en not_active Expired - Lifetime
-
1996
- 1996-03-20 EP EP96104432A patent/EP0738040B1/de not_active Expired - Lifetime
- 1996-03-20 DE DE69628611T patent/DE69628611T2/de not_active Expired - Lifetime
- 1996-03-29 KR KR1019960009013A patent/KR0184994B1/ko not_active IP Right Cessation
- 1996-04-03 JP JP8081302A patent/JP3002641B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
KR0184994B1 (ko) | 1999-04-15 |
JPH08293758A (ja) | 1996-11-05 |
EP0738040B1 (de) | 2003-06-11 |
KR960039614A (ko) | 1996-11-25 |
US5550520A (en) | 1996-08-27 |
DE69628611T2 (de) | 2004-04-15 |
EP0738040A1 (de) | 1996-10-16 |
JP3002641B2 (ja) | 2000-01-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69628611D1 (de) | Monolithischer HBT aktives abstimmbares Bandpassfilter | |
DE69114216D1 (de) | Abstimmbares Bandpass Filter. | |
KR940008786U (ko) | 동조 가능 필터 | |
DE69808891D1 (de) | Zwischenfrequenzsystem mit aktiven filtern | |
DE69427563D1 (de) | Abstimmbarer Filter | |
DE68920971D1 (de) | Bandpassfilter. | |
DE69533248D1 (de) | Abstimmbares optisches Filter | |
DE69123611T2 (de) | Aktiver Filter | |
FR2716045B1 (fr) | Filtre actif. | |
DE69609552D1 (de) | Aktives differentiales Filter zweiter Ordnung | |
DE3879469D1 (de) | Aktive filteranordnung. | |
KR970004010A (ko) | 모놀리틱 세라믹 커패시터 및 이의 제조 방법 | |
DE69022837T2 (de) | Aktives Filter. | |
DE69312133D1 (de) | Abstimmbares Hochfrequenzfilter | |
DE69835655D1 (de) | Monolithisches Keramikfilter | |
DE68917373T2 (de) | Magnetisch abstimmbares Bandpassfilter. | |
KR960009383A (ko) | 액티브 밴드패스 필터 | |
DE69508672D1 (de) | Aktives Bandpassfilter | |
DE69736103D1 (de) | Akustooptischer abstimmbarer Filter | |
DE69113896D1 (de) | Dielektrische Filter. | |
DE579256T1 (de) | Aktives Bandpassfilter. | |
FI950033A (fi) | Kaistanpäästösuodatin kytketyillä resonaattoreilla | |
DE58904360D1 (de) | Aktives filter. | |
DE69707562T2 (de) | Aktives Filter | |
KR960038874U (ko) | 동축형 대역통과 여파기 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8327 | Change in the person/name/address of the patent owner |
Owner name: NORTHROP GRUMMAN CORP. (N.D.GES.D.STAATES DELAWARE |
|
8364 | No opposition during term of opposition | ||
R082 | Change of representative |
Ref document number: 738040 Country of ref document: EP Representative=s name: WUESTHOFF & WUESTHOFF PATENT- UND RECHTSANWAEL, DE |
|
R081 | Change of applicant/patentee |
Ref document number: 738040 Country of ref document: EP Owner name: NORTHROP GRUMMAN SYSTEMS CORPORATION, US Free format text: FORMER OWNER: NORTHROP GRUMMAN CORP. (N.D.GES.D.STAATES DELAWARE), LOS ANGELES, US Effective date: 20120814 |
|
R082 | Change of representative |
Ref document number: 738040 Country of ref document: EP Representative=s name: WUESTHOFF & WUESTHOFF PATENT- UND RECHTSANWAEL, DE Effective date: 20120814 |