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ATE170346T1 - Vorrichtung und verfahren zum abstimmen eines mischerfilters - Google Patents

Vorrichtung und verfahren zum abstimmen eines mischerfilters

Info

Publication number
ATE170346T1
ATE170346T1 AT94902794T AT94902794T ATE170346T1 AT E170346 T1 ATE170346 T1 AT E170346T1 AT 94902794 T AT94902794 T AT 94902794T AT 94902794 T AT94902794 T AT 94902794T AT E170346 T1 ATE170346 T1 AT E170346T1
Authority
AT
Austria
Prior art keywords
combiner
pct
measuring
tuning
signals
Prior art date
Application number
AT94902794T
Other languages
English (en)
Inventor
Pekka Heikkilae
Eero Koukkari
Seppo Nousiainen
Juha Vasanoja
Martti Kainulainen
Jukka Kylloenen
Teuvo Haukipuro
Esa Niemitalo
Harri Tikka
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
Application granted granted Critical
Publication of ATE170346T1 publication Critical patent/ATE170346T1/de

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/46—Networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies

Landscapes

  • Networks Using Active Elements (AREA)
  • Transmitters (AREA)
  • Filters And Equalizers (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Radar Systems Or Details Thereof (AREA)
AT94902794T 1992-12-30 1993-12-29 Vorrichtung und verfahren zum abstimmen eines mischerfilters ATE170346T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI925956A FI94690C (fi) 1992-12-30 1992-12-30 Laite kompainerisuodattimen virittämiseksi ja menetelmä erotusmittauksen suorittamiseksi

Publications (1)

Publication Number Publication Date
ATE170346T1 true ATE170346T1 (de) 1998-09-15

Family

ID=8536491

Family Applications (1)

Application Number Title Priority Date Filing Date
AT94902794T ATE170346T1 (de) 1992-12-30 1993-12-29 Vorrichtung und verfahren zum abstimmen eines mischerfilters

Country Status (9)

Country Link
US (1) US5525940A (de)
EP (1) EP0647373B1 (de)
JP (1) JP3078839B2 (de)
AT (1) ATE170346T1 (de)
AU (1) AU674375B2 (de)
DE (1) DE69320636T2 (de)
FI (1) FI94690C (de)
NO (1) NO306889B1 (de)
WO (1) WO1994016497A1 (de)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI93064C (fi) * 1992-12-30 1995-02-10 Nokia Telecommunications Oy Laite ja menetelmä kaistanpäästösuodattimen, erityisesti kompainerisuodattimen säätämiseksi
JP2728018B2 (ja) * 1995-04-18 1998-03-18 日本電気株式会社 送信回路
FI107766B (fi) * 1998-01-28 2001-09-28 Nokia Networks Oy Viritysmenetelmä ja lähetinvastaanotinyksikkö
SE0004481D0 (sv) * 2000-12-05 2000-12-05 Ericsson Telefon Ab L M A method and a device for tuning a cavity channel filter combiner
SE519892C2 (sv) * 2000-12-15 2003-04-22 Allgon Ab Metod för att avstämma ett radiofilter, ett radiofilter och ett system innefattande ett sådant radiofilter.
JP2005534203A (ja) * 2001-10-16 2005-11-10 株式会社ＲｆＳｔｒｅａｍ モノリシック集積回路上に受信機を実施するための方法および装置
US7199844B2 (en) * 2002-05-28 2007-04-03 Rfstream Corporation Quadratic nyquist slope filter
US6750734B2 (en) * 2002-05-29 2004-06-15 Ukom, Inc. Methods and apparatus for tuning an LC filter
EP1532736A1 (de) * 2002-05-29 2005-05-25 Ukom, Inc. Vefahren und vorrichtungen zur abstimmung unter verwendung der sukzessiven aproximation
WO2003103131A2 (en) * 2002-05-29 2003-12-11 Ukom, Inc. Image rejection quadratic filter
US6882245B2 (en) * 2002-06-05 2005-04-19 Rf Stream Corporation Frequency discrete LC filter bank
WO2003105464A2 (en) * 2002-06-05 2003-12-18 Ukom, Inc. Quadratic video demodulation with baseband nyquist filter
US20050012676A1 (en) * 2003-07-16 2005-01-20 Mccarthy Robert Daniel N-port signal divider/combiner
US6940365B2 (en) * 2003-07-18 2005-09-06 Rfstream Corporation Methods and apparatus for an improved discrete LC filter
WO2006099161A2 (en) * 2005-03-11 2006-09-21 Rfstream Corporation A mosfet temperature compensation current source
JP2008533840A (ja) * 2005-03-11 2008-08-21 株式会社ＲｆＳｔｒｅａｍ 無線周波誘導容量性フィルタ回路トポロジー
US20060217095A1 (en) * 2005-03-11 2006-09-28 Takatsuga Kamata Wideband tuning circuit
DE102009018648B4 (de) * 2009-04-23 2018-11-29 Snaptrack, Inc. Frontendmodul mit Antennentuner
US9136825B2 (en) * 2012-06-13 2015-09-15 Nokia Technologies Oy Method and device for implementing tracking filters and RF front end of software defined radios
US9136815B2 (en) 2012-06-13 2015-09-15 Nokia Technologies Oy Methods and apparatuses for implementing variable bandwidth RF tracking filters for reconfigurable multi-standard radios
US9407482B2 (en) 2013-11-11 2016-08-02 Nokia Technologies Oy Tunable RF N-path filter

Family Cites Families (4)

* 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
US4726071A (en) * 1984-12-31 1988-02-16 Orion Industries, Inc. Microprocessor controlled self-tuning resonant cavity and method
SE467717B (sv) * 1990-12-21 1992-08-31 Ericsson Telefon Ab L M Foerfarande foer finavstaemning av resonansfrekvensen foer ett filter i en combiner
FI87864C (fi) * 1991-05-09 1993-02-25 Telenokia Oy Anordning och foerfarande foer reglering av ett bandpassfilter, saerskilt ett kombinatorfilter

Also Published As

Publication number Publication date
NO943192L (no) 1994-10-28
JPH07504557A (ja) 1995-05-18
DE69320636D1 (de) 1998-10-01
EP0647373B1 (de) 1998-08-26
AU5701394A (en) 1994-08-15
NO943192D0 (no) 1994-08-29
US5525940A (en) 1996-06-11
WO1994016497A1 (en) 1994-07-21
DE69320636T2 (de) 1999-02-11
JP3078839B2 (ja) 2000-08-21
NO306889B1 (no) 2000-01-03
AU674375B2 (en) 1996-12-19
EP0647373A1 (de) 1995-04-12
FI925956A (fi) 1994-07-01
FI94690B (fi) 1995-06-30
FI925956A0 (fi) 1992-12-30
FI94690C (fi) 1995-10-10

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee