JPS56752A - Antenna control unit - Google Patents

Antenna control unit

Info

Publication number
JPS56752A
JPS56752A JP7624479A JP7624479A JPS56752A JP S56752 A JPS56752 A JP S56752A JP 7624479 A JP7624479 A JP 7624479A JP 7624479 A JP7624479 A JP 7624479A JP S56752 A JPS56752 A JP S56752A
Authority
JP
Japan
Prior art keywords
circuit
antenna
code
light
control
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.)
Pending
Application number
JP7624479A
Other languages
Japanese (ja)
Inventor
Joji Kane
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
Priority to JP7624479A priority Critical patent/JPS56752A/en
Publication of JPS56752A publication Critical patent/JPS56752A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole

Landscapes

  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Details Of Aerials (AREA)

Abstract

PURPOSE:To enable the remote control of antenna tuning, by controlling the antenna circuit consisting of bent transmission conductor line and variable reactance circuit, with the signal converting the freqency set code into light and further into analog voltage. CONSTITUTION:The antenna circuit 1 consists of a pair of antenna elements 2a, 2b formed with distributed inductance of bending transmission conductor line, variable reactance circuits 4a, 4b having the varactor diodes D5a, 5b, and impedance adjusting capacitor connected between the power feeding elements 3a, 3b. On the other hand, the code produced with the frequency code generating section 14 of the control circuit 9 is converted at 15 into light code, and this light is received at the photodetector 10 of the control circuit 8, and it is converted 11 into electric signal and latched 12. This latched code is in D/A conversion 13, and the tuning control of the circuit 1 is made by applying this analog voltage to D5a, D5b. By installing the circuits 8, 9 at a location apart from the circuit 1, the remote control for antenna tuning can be made possible.
JP7624479A 1979-06-14 1979-06-14 Antenna control unit Pending JPS56752A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7624479A JPS56752A (en) 1979-06-14 1979-06-14 Antenna control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7624479A JPS56752A (en) 1979-06-14 1979-06-14 Antenna control unit

Publications (1)

Publication Number Publication Date
JPS56752A true JPS56752A (en) 1981-01-07

Family

ID=13599760

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7624479A Pending JPS56752A (en) 1979-06-14 1979-06-14 Antenna control unit

Country Status (1)

Country Link
JP (1) JPS56752A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63197105A (en) * 1987-02-12 1988-08-16 Nippon Telegr & Teleph Corp <Ntt> Standard antenna

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63197105A (en) * 1987-02-12 1988-08-16 Nippon Telegr & Teleph Corp <Ntt> Standard antenna

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