JPS5724129A - Antenna circuit - Google Patents

Antenna circuit

Info

Publication number
JPS5724129A
JPS5724129A JP9918780A JP9918780A JPS5724129A JP S5724129 A JPS5724129 A JP S5724129A JP 9918780 A JP9918780 A JP 9918780A JP 9918780 A JP9918780 A JP 9918780A JP S5724129 A JPS5724129 A JP S5724129A
Authority
JP
Japan
Prior art keywords
uhf
vhf
input
antenna
circuit
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.)
Granted
Application number
JP9918780A
Other languages
Japanese (ja)
Other versions
JPS6347015B2 (en
Inventor
Kazuaki Sakamoto
Masayuki Suzuki
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.)
Fujitsu General Ltd
Gen Co Ltd
Original Assignee
Fujitsu General Ltd
Gen 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 Fujitsu General Ltd, Gen Co Ltd filed Critical Fujitsu General Ltd
Priority to JP9918780A priority Critical patent/JPS5724129A/en
Publication of JPS5724129A publication Critical patent/JPS5724129A/en
Publication of JPS6347015B2 publication Critical patent/JPS6347015B2/ja
Granted 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)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

PURPOSE:To use one end of an antenna terminal plate providing independent input terminals for UHF and VHF in common to UHF and U/V mixing input antennas, by providing a means which controls a coupling switch element with a changeover switch. CONSTITUTION:A coupling circuit is connected to a UHF input terminal and a low- pass filter is connected to a VHF input terminal, and a means which can connect the antenna input for U/V mixing input to an antenna without any brancher is provided by switching a coupling switch element provided between the circuits. For example, when a changeover switch is changed over to the VHF side, i.e., +B side, a diode D1 is in forward bias and the U/V both parts are coupled. A UHF signal inputted to a terminal 1 is transmitted to a UHF circuit Z01 without loss of a low-pass filter and a UHF signal is attenuated in a VHF circuit Z02 via inductances L2, L3, allowing transmit the VHF signals.
JP9918780A 1980-07-18 1980-07-18 Antenna circuit Granted JPS5724129A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9918780A JPS5724129A (en) 1980-07-18 1980-07-18 Antenna circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9918780A JPS5724129A (en) 1980-07-18 1980-07-18 Antenna circuit

Publications (2)

Publication Number Publication Date
JPS5724129A true JPS5724129A (en) 1982-02-08
JPS6347015B2 JPS6347015B2 (en) 1988-09-20

Family

ID=14240637

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9918780A Granted JPS5724129A (en) 1980-07-18 1980-07-18 Antenna circuit

Country Status (1)

Country Link
JP (1) JPS5724129A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6058149A (en) * 1983-09-12 1985-04-04 日立プラント建設株式会社 Shower for cleaning room
JPS61170465U (en) * 1985-02-19 1986-10-22
JPS6347732U (en) * 1986-09-16 1988-03-31

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6058149A (en) * 1983-09-12 1985-04-04 日立プラント建設株式会社 Shower for cleaning room
JPS6328621B2 (en) * 1983-09-12 1988-06-09 Hitachi Plant Eng & Constr Co
JPS61170465U (en) * 1985-02-19 1986-10-22
JPH0228875Y2 (en) * 1985-02-19 1990-08-02
JPS6347732U (en) * 1986-09-16 1988-03-31

Also Published As

Publication number Publication date
JPS6347015B2 (en) 1988-09-20

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