DE602004004619D1 - Zwischenfrequenzschaltkreis - Google Patents

Zwischenfrequenzschaltkreis

Info

Publication number
DE602004004619D1
DE602004004619D1 DE200460004619 DE602004004619T DE602004004619D1 DE 602004004619 D1 DE602004004619 D1 DE 602004004619D1 DE 200460004619 DE200460004619 DE 200460004619 DE 602004004619 T DE602004004619 T DE 602004004619T DE 602004004619 D1 DE602004004619 D1 DE 602004004619D1
Authority
DE
Germany
Prior art keywords
intermediate frequency
frequency circuit
circuit
frequency
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
DE200460004619
Other languages
English (en)
Other versions
DE602004004619T2 (de
Inventor
Masaki Yamamoto
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.)
Alps Alpine Co Ltd
Original Assignee
Alps Electric Co Ltd
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 Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Publication of DE602004004619D1 publication Critical patent/DE602004004619D1/de
Application granted granted Critical
Publication of DE602004004619T2 publication Critical patent/DE602004004619T2/de
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H03H7/01—Frequency selective two-port networks
    • H03H7/0153—Electrical filters; Controlling thereof
    • 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
    • H03H7/01—Frequency selective two-port networks
    • H03H7/06—Frequency selective two-port networks including resistors
    • H03H7/07—Bridged T-filters
    • 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
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1758—Series LC in shunt or branch path
    • 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
    • H03H7/01—Frequency selective two-port networks
    • H03H2007/013—Notch or bandstop filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H2210/00—Indexing scheme relating to details of tunable filters
    • H03H2210/01—Tuned parameter of filter characteristics
    • H03H2210/012—Centre frequency; Cut-off frequency
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H2210/00—Indexing scheme relating to details of tunable filters
    • H03H2210/02—Variable filter component
    • H03H2210/021—Amplifier, e.g. transconductance amplifier
DE200460004619 2003-11-21 2004-11-19 Zwischenfrequenzschaltung Expired - Fee Related DE602004004619T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003272655U 2003-11-21
JP2003272655U JP3101832U (ja) 2003-11-21 2003-11-21 中間周波回路

Publications (2)

Publication Number Publication Date
DE602004004619D1 true DE602004004619D1 (de) 2007-03-22
DE602004004619T2 DE602004004619T2 (de) 2007-11-08

Family

ID=34452343

Family Applications (1)

Application Number Title Priority Date Filing Date
DE200460004619 Expired - Fee Related DE602004004619T2 (de) 2003-11-21 2004-11-19 Zwischenfrequenzschaltung

Country Status (3)

Country Link
EP (1) EP1536557B1 (de)
JP (1) JP3101832U (de)
DE (1) DE602004004619T2 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10050603B2 (en) 2015-11-04 2018-08-14 Mediatek Inc. Frequency tunable filter with voltage stressed relaxed switch, and associated apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1352223A (fr) * 1963-01-02 1964-02-14 Radiotechnique Filtre de bande à quatre circuits accordés, notamment pour télévision
US4376953A (en) * 1979-10-26 1983-03-15 Naimpally Saiprasad V Signal separation networks
EP0203343B1 (de) * 1985-04-18 1991-11-27 Matsushita Electric Industrial Co., Ltd. Siebglied mit zwei regelbaren Induktionsspulen

Also Published As

Publication number Publication date
EP1536557B1 (de) 2007-02-07
JP3101832U (ja) 2004-06-24
EP1536557A1 (de) 2005-06-01
DE602004004619T2 (de) 2007-11-08

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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