CA1130937A - Electronic tuning circuit having image trapping element - Google Patents

Electronic tuning circuit having image trapping element

Info

Publication number
CA1130937A
CA1130937A CA321,478A CA321478A CA1130937A CA 1130937 A CA1130937 A CA 1130937A CA 321478 A CA321478 A CA 321478A CA 1130937 A CA1130937 A CA 1130937A
Authority
CA
Canada
Prior art keywords
circuit
resonant circuit
conductive strip
section
resonant
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
Application number
CA321,478A
Other languages
English (en)
French (fr)
Inventor
Mitsuo Saito
Sadahiko Yamashita
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of CA1130937A publication Critical patent/CA1130937A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/203—Strip line filters
    • H01P1/20327—Electromagnetic interstage coupling
    • H01P1/20336—Comb or interdigital filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/18—Modifications of frequency-changers for eliminating image frequencies
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
    • H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
    • H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Noise Elimination (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Filters And Equalizers (AREA)
CA321,478A 1978-02-15 1979-02-14 Electronic tuning circuit having image trapping element Expired CA1130937A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1727578A JPS54109301A (en) 1978-02-15 1978-02-15 Electronic tuner circuit
JP53-17275 1978-02-15

Publications (1)

Publication Number Publication Date
CA1130937A true CA1130937A (en) 1982-08-31

Family

ID=11939415

Family Applications (1)

Application Number Title Priority Date Filing Date
CA321,478A Expired CA1130937A (en) 1978-02-15 1979-02-14 Electronic tuning circuit having image trapping element

Country Status (5)

Country Link
US (1) US4214217A (enExample)
JP (1) JPS54109301A (enExample)
CA (1) CA1130937A (enExample)
DE (1) DE2905684C2 (enExample)
GB (1) GB2019683B (enExample)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58116301U (ja) * 1982-01-31 1983-08-09 日本電業工作株式会社 帯域通過ろ波器
US4442548A (en) * 1982-05-14 1984-04-10 Rca Corporation Television receiver tuning circuit tunable over a wide frequency range
US4494081A (en) * 1982-05-24 1985-01-15 Rca Corporation Variable frequency U. H. F. local oscillator for a television receiver
DE4140299A1 (de) * 1991-10-26 1993-07-08 Aeg Mobile Communication Kammleitungsfilter
JPH09270602A (ja) * 1996-04-01 1997-10-14 Matsushita Electric Ind Co Ltd 受信装置
US6507320B2 (en) 2000-04-12 2003-01-14 Raytheon Company Cross slot antenna
US6518844B1 (en) 2000-04-13 2003-02-11 Raytheon Company Suspended transmission line with embedded amplifier
US6622370B1 (en) 2000-04-13 2003-09-23 Raytheon Company Method for fabricating suspended transmission line
US6542048B1 (en) * 2000-04-13 2003-04-01 Raytheon Company Suspended transmission line with embedded signal channeling device
US6552635B1 (en) 2000-04-13 2003-04-22 Raytheon Company Integrated broadside conductor for suspended transmission line and method
US6535088B1 (en) 2000-04-13 2003-03-18 Raytheon Company Suspended transmission line and method
US6885264B1 (en) 2003-03-06 2005-04-26 Raytheon Company Meandered-line bandpass filter

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2617880A (en) * 1948-02-27 1952-11-11 Rca Corp High-frequency dielectric waveguide coupling
AT272412B (de) * 1965-10-13 1969-07-10 Telefunken Patent Leitungskreis für hochfrequente elektrische Schwingungen
JPS6041481B2 (ja) * 1975-12-18 1985-09-17 松下電器産業株式会社 電子同調回路
JPS5299746A (en) * 1976-02-18 1977-08-22 Toshiba Corp Microstrip line

Also Published As

Publication number Publication date
JPS54109301A (en) 1979-08-27
DE2905684A1 (de) 1979-08-16
DE2905684C2 (de) 1981-10-01
GB2019683A (en) 1979-10-31
JPS6111481B2 (enExample) 1986-04-03
US4214217A (en) 1980-07-22
GB2019683B (en) 1982-05-19

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Legal Events

Date Code Title Description
MKEX Expiry