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JPS56751A - Antenna control unit - Google Patents

Antenna control unit

Info

Publication number
JPS56751A
JPS56751A JP7624379A JP7624379A JPS56751A JP S56751 A JPS56751 A JP S56751A JP 7624379 A JP7624379 A JP 7624379A JP 7624379 A JP7624379 A JP 7624379A JP S56751 A JPS56751 A JP S56751A
Authority
JP
Japan
Prior art keywords
circuit
antenna
tuning
converting
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
JP7624379A
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 JP7624379A priority Critical patent/JPS56751A/en
Publication of JPS56751A publication Critical patent/JPS56751A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Details Of Aerials (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

PURPOSE:To enable to control the antenna tuning with digital signal, by controlling the variable reactance of the antenna circuit forming the transmission conductor line with bending with the signal in D/A converting the reception frequency set code. CONSTITUTION:The antenna circuit 1 consists of the a pair of antenna elements 1a, 1b of distributed inductance bending the transmission conductor line, variable reactance circuits 4a, 4b having the varactor diodes 5a, 5b, and impedance adjusting capacitor connected between the power feeding terminals 3a, 3b. The tuning of the circuit 1 is made by latching the reception frequency set code fed to the terminal 9 of the control circuit 8 with the latch circuit 10 and by applying the analog signal in D/A converting 11 the output to the diodes 5a, 5b. Accordingly, the tuning of the circuit 1 is controlled with digital code and by installing the circuit 8 apart from the antenna, the remote control for antenna tuning can be made possible.
JP7624379A 1979-06-14 1979-06-14 Antenna control unit Pending JPS56751A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7624379A JPS56751A (en) 1979-06-14 1979-06-14 Antenna control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7624379A JPS56751A (en) 1979-06-14 1979-06-14 Antenna control unit

Publications (1)

Publication Number Publication Date
JPS56751A true JPS56751A (en) 1981-01-07

Family

ID=13599731

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7624379A Pending JPS56751A (en) 1979-06-14 1979-06-14 Antenna control unit

Country Status (1)

Country Link
JP (1) JPS56751A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4801515A (en) * 1986-07-08 1989-01-31 Minolta Camera Kabushiki Kaisha Photosensitive member having an overcoat layer
US5166018A (en) * 1985-09-13 1992-11-24 Minolta Camera Kabushiki Kaisha Photosensitive member with hydrogen-containing carbon layer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5166018A (en) * 1985-09-13 1992-11-24 Minolta Camera Kabushiki Kaisha Photosensitive member with hydrogen-containing carbon layer
US4801515A (en) * 1986-07-08 1989-01-31 Minolta Camera Kabushiki Kaisha Photosensitive member having an overcoat layer

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