GB2015281B - Impedance matched tuning device having image frequency trapping circuit - Google Patents

Impedance matched tuning device having image frequency trapping circuit

Info

Publication number
GB2015281B
GB2015281B GB7906446A GB7906446A GB2015281B GB 2015281 B GB2015281 B GB 2015281B GB 7906446 A GB7906446 A GB 7906446A GB 7906446 A GB7906446 A GB 7906446A GB 2015281 B GB2015281 B GB 2015281B
Authority
GB
United Kingdom
Prior art keywords
tuning device
image frequency
impedance matched
trapping circuit
matched tuning
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
GB7906446A
Other languages
English (en)
Other versions
GB2015281A (en
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
Publication of GB2015281A publication Critical patent/GB2015281A/en
Application granted granted Critical
Publication of GB2015281B publication Critical patent/GB2015281B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D9/00—Demodulation or transference of modulation of modulated electromagnetic waves
    • H03D9/06—Transference of modulation using distributed inductance and capacitance
    • H03D9/0608—Transference of modulation using distributed inductance and capacitance by means of diodes
    • H03D9/0625—Transference of modulation using distributed inductance and capacitance by means of diodes mounted in a coaxial resonator structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
GB7906446A 1978-02-28 1979-02-23 Impedance matched tuning device having image frequency trapping circuit Expired GB2015281B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2297378A JPS54115001A (en) 1978-02-28 1978-02-28 Electronic tuning circuit

Publications (2)

Publication Number Publication Date
GB2015281A GB2015281A (en) 1979-09-05
GB2015281B true GB2015281B (en) 1982-05-19

Family

ID=12097502

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7906446A Expired GB2015281B (en) 1978-02-28 1979-02-23 Impedance matched tuning device having image frequency trapping circuit

Country Status (5)

Country Link
US (1) US4214218A (US20030204162A1-20031030-M00001.png)
JP (1) JPS54115001A (US20030204162A1-20031030-M00001.png)
CA (1) CA1130484A (US20030204162A1-20031030-M00001.png)
DE (1) DE2907471C2 (US20030204162A1-20031030-M00001.png)
GB (1) GB2015281B (US20030204162A1-20031030-M00001.png)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60236501A (ja) * 1984-05-10 1985-11-25 Yagi Antenna Co Ltd 帯域通過型ろ波器
DE19830616A1 (de) * 1998-07-09 2000-01-13 Wolfgang Benecke Mikrospule

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT272412B (de) * 1965-10-13 1969-07-10 Telefunken Patent Leitungskreis für hochfrequente elektrische Schwingungen
DE1261918B (de) * 1966-12-02 1968-02-29 Telefunken Patent Verstaerker fuer hochfrequente elektrische Schwingungen mit Leitungskreisen in Streifenleitungstechnik
JPS5231601A (en) * 1975-08-19 1977-03-10 Matsushita Electric Ind Co Ltd Ultrahigh frequency tuner
JPS6041481B2 (ja) * 1975-12-18 1985-09-17 松下電器産業株式会社 電子同調回路

Also Published As

Publication number Publication date
DE2907471A1 (de) 1979-09-06
US4214218A (en) 1980-07-22
JPS54115001A (en) 1979-09-07
DE2907471C2 (de) 1982-09-09
JPS6223492B2 (US20030204162A1-20031030-M00001.png) 1987-05-23
GB2015281A (en) 1979-09-05
CA1130484A (en) 1982-08-24

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930223