NO303997B1 - Fremgangsmåte og anordning for frekvensinnstilling av et radiofrekvent båndpassfilter, spesielt et kombineringsfilter - Google Patents

Fremgangsmåte og anordning for frekvensinnstilling av et radiofrekvent båndpassfilter, spesielt et kombineringsfilter

Info

Publication number
NO303997B1
NO303997B1 NO934034A NO934034A NO303997B1 NO 303997 B1 NO303997 B1 NO 303997B1 NO 934034 A NO934034 A NO 934034A NO 934034 A NO934034 A NO 934034A NO 303997 B1 NO303997 B1 NO 303997B1
Authority
NO
Norway
Prior art keywords
bandpass filter
filter
pct
frequency
radio frequency
Prior art date
Application number
NO934034A
Other languages
English (en)
Other versions
NO934034L (no
NO934034D0 (no
Inventor
Veli-Matti Saerkkae
Original Assignee
Nokia Telecommunications Oy
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 Nokia Telecommunications Oy filed Critical Nokia Telecommunications Oy
Publication of NO934034D0 publication Critical patent/NO934034D0/no
Publication of NO934034L publication Critical patent/NO934034L/no
Publication of NO303997B1 publication Critical patent/NO303997B1/no

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
    • H03H11/1291—Current or voltage controlled filters

Landscapes

  • Transmitters (AREA)
  • Networks Using Active Elements (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Filters And Equalizers (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Fats And Perfumes (AREA)
  • Paper (AREA)
NO934034A 1991-05-09 1993-11-08 Fremgangsmåte og anordning for frekvensinnstilling av et radiofrekvent båndpassfilter, spesielt et kombineringsfilter NO303997B1 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI912255A FI87864C (fi) 1991-05-09 1991-05-09 Anordning och foerfarande foer reglering av ett bandpassfilter, saerskilt ett kombinatorfilter
PCT/FI1992/000148 WO1992020149A1 (en) 1991-05-09 1992-05-08 Device and method for adjusting a bandpass filter, especially a combiner filter

Publications (3)

Publication Number Publication Date
NO934034D0 NO934034D0 (no) 1993-11-08
NO934034L NO934034L (no) 1994-01-07
NO303997B1 true NO303997B1 (no) 1998-10-05

Family

ID=8532483

Family Applications (1)

Application Number Title Priority Date Filing Date
NO934034A NO303997B1 (no) 1991-05-09 1993-11-08 Fremgangsmåte og anordning for frekvensinnstilling av et radiofrekvent båndpassfilter, spesielt et kombineringsfilter

Country Status (9)

Country Link
US (1) US5420552A (no)
EP (1) EP0583306B1 (no)
JP (1) JP3069374B2 (no)
AT (1) ATE156317T1 (no)
AU (1) AU657132B2 (no)
DE (1) DE69221295T2 (no)
FI (1) FI87864C (no)
NO (1) NO303997B1 (no)
WO (1) WO1992020149A1 (no)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI94690C (fi) * 1992-12-30 1995-10-10 Nokia Telecommunications Oy Laite kompainerisuodattimen virittämiseksi ja menetelmä erotusmittauksen suorittamiseksi
FI94807C (fi) * 1992-12-30 1995-10-25 Nokia Telecommunications Oy Menetelmä ja järjestely kompainerisuodattimen virittämiseksi
FI93064C (fi) * 1992-12-30 1995-02-10 Nokia Telecommunications Oy Laite ja menetelmä kaistanpäästösuodattimen, erityisesti kompainerisuodattimen säätämiseksi
FI107766B (fi) * 1998-01-28 2001-09-28 Nokia Networks Oy Viritysmenetelmä ja lähetinvastaanotinyksikkö
SE0000585D0 (sv) * 2000-02-23 2000-02-23 Ericsson Telefon Ab L M Tuning method and system
US6480703B1 (en) * 2000-11-07 2002-11-12 Agile Tv Corporation Common carrier, multiple output RF upconverter
US7047196B2 (en) 2000-06-08 2006-05-16 Agiletv Corporation System and method of voice recognition near a wireline node of a network supporting cable television and/or video delivery
US8095370B2 (en) 2001-02-16 2012-01-10 Agiletv Corporation Dual compression voice recordation non-repudiation system
SE519372C2 (sv) * 2001-03-09 2003-02-18 Nat Semiconductor Corp Metod och krets för filtertrimning
US6778023B2 (en) * 2001-07-31 2004-08-17 Nokia Corporation Tunable filter and method of tuning a filter
KR100785079B1 (ko) * 2006-04-04 2007-12-12 삼성전자주식회사 부하의 임피던스 정합시스템 및 정합방법과, 이를 적용한네트워크 분석기
EP2055001A2 (en) * 2006-08-23 2009-05-06 Nxp B.V. Filter-tracking and control method
US20080107011A1 (en) * 2006-11-02 2008-05-08 Mediatek Inc. System, Apparatus, and Method for Processing a Received Orthogonal Frequency Division Multiplexing Signal
US8207727B2 (en) * 2006-12-15 2012-06-26 Nxp B.V. RF circuit analysis
US8810331B2 (en) * 2010-12-10 2014-08-19 Wispry, Inc. MEMS tunable notch filter frequency automatic control loop systems and methods
JP5776495B2 (ja) * 2011-10-31 2015-09-09 富士通株式会社 利得測定回路、利得測定方法および通信装置
DE102012203026A1 (de) 2012-02-28 2013-08-29 Sennheiser Electronic Gmbh & Co. Kg Hochfrequenzsender
US9031523B2 (en) * 2012-06-26 2015-05-12 Htc Corporation Systems and methods for determining antenna impedance
EP2876811A1 (en) * 2013-11-21 2015-05-27 Alcatel Lucent Tuning a tunable filter

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715690A (en) * 1971-05-18 1973-02-06 Trw Inc Automatic tuning electric wave filter
FR2298903A1 (fr) * 1975-01-22 1976-08-20 Thomson Csf Dispositif d'adaptation d'antenne et antenne munie d'un tel dispositif
US4726071A (en) * 1984-12-31 1988-02-16 Orion Industries, Inc. Microprocessor controlled self-tuning resonant cavity and method
US4951009A (en) * 1989-08-11 1990-08-21 Applied Materials, Inc. Tuning method and control system for automatic matching network
US5019792A (en) * 1989-10-23 1991-05-28 Raytheon Company Signal tracking electronically tunable filter
US4980656A (en) * 1989-12-01 1990-12-25 Motorola, Inc. Active input impedance tuner for compensating for power loss
CA2059580C (en) * 1991-01-18 1996-06-11 Youhei Ishikawa Auto-tuned apparatus for band-pass filter

Also Published As

Publication number Publication date
AU657132B2 (en) 1995-03-02
DE69221295D1 (de) 1997-09-04
FI912255A0 (fi) 1991-05-09
NO934034L (no) 1994-01-07
WO1992020149A1 (en) 1992-11-12
AU1686192A (en) 1992-12-21
US5420552A (en) 1995-05-30
JPH06511115A (ja) 1994-12-08
EP0583306A1 (en) 1994-02-23
JP3069374B2 (ja) 2000-07-24
DE69221295T2 (de) 1998-01-15
ATE156317T1 (de) 1997-08-15
EP0583306B1 (en) 1997-07-30
NO934034D0 (no) 1993-11-08
FI87864B (fi) 1992-11-13
FI87864C (fi) 1993-02-25

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Legal Events

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MM1K Lapsed by not paying the annual fees

Free format text: LAPSED IN NOVEMBER 2003