JPS5461402A - Signal selection circuit - Google Patents

Signal selection circuit

Info

Publication number
JPS5461402A
JPS5461402A JP12832577A JP12832577A JPS5461402A JP S5461402 A JPS5461402 A JP S5461402A JP 12832577 A JP12832577 A JP 12832577A JP 12832577 A JP12832577 A JP 12832577A JP S5461402 A JPS5461402 A JP S5461402A
Authority
JP
Japan
Prior art keywords
signal
fed
terminal
diode
switch
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
JP12832577A
Other languages
Japanese (ja)
Inventor
Yasuo Mihashi
Yoshihisa Nishitani
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP12832577A priority Critical patent/JPS5461402A/en
Publication of JPS5461402A publication Critical patent/JPS5461402A/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)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

PURPOSE:To establish a switch having sufficient isolation, by utilizing the diode inserted in series with signal and another diode and a switch bypassing the signal to ground. CONSTITUTION:When the switch 11 is set as shown in Figure, the potentials VY and VZ at the points Y and Z are respectively VY>VZ, causing the diode D2 to be non-conductive. Further, no voltage Vcc is fed to the terminal 12a of the converter 12 and no output S2 is appeared at the terminal 12c. Accordingly, the signal S1 is fed to the mixer 14 and only the signal S1 is fed to the terminal 15. When the switch 11 is positioned in the opposite connection as the signal S1, VY<VZ is caused, resulting in conducting the diode D1 and non-conducting the diode D2. Then, the supply to the terminal 14b of the mixer 14 by the signal S1 is interrupted. Vcc is fed to the converter 12, the singal S2 is fed to the terminal 14a. The isolation more than 60 dB is obtained for the slection circuit with the signal at VHF and UHF band, and the wiring can be made less in number.
JP12832577A 1977-10-25 1977-10-25 Signal selection circuit Pending JPS5461402A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12832577A JPS5461402A (en) 1977-10-25 1977-10-25 Signal selection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12832577A JPS5461402A (en) 1977-10-25 1977-10-25 Signal selection circuit

Publications (1)

Publication Number Publication Date
JPS5461402A true JPS5461402A (en) 1979-05-17

Family

ID=14981977

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12832577A Pending JPS5461402A (en) 1977-10-25 1977-10-25 Signal selection circuit

Country Status (1)

Country Link
JP (1) JPS5461402A (en)

Similar Documents

Publication Publication Date Title
JPS51140421A (en) Self-oscillation mixer circuit
JPS6439830A (en) A/d converter
JPS5542412A (en) Electronic high frequency switch
JPS5616225A (en) Input selection circuit for microcomputer
JPS566537A (en) Input circuit
JPS5687931A (en) Input selection circuit
JPS54158806A (en) Sensitivity change-over unit
JPS5597754A (en) Mixing circuit
JPS5246710A (en) Transmission circuit
JPS561769A (en) Constant current circuit
JPS5698032A (en) Television tuner
JPS533767A (en) Input-output-insulation circuit using photocoupler
JPS53138266A (en) Signal switch circuit
JPS5376728A (en) Microwave circuit
JPS5753152A (en) Inverter circuit
JPS5769932A (en) Current switching type logical circuit
JPS55151806A (en) Signal level control circuit
JPS5665512A (en) Electronic circuit
JPS5412663A (en) Function generator
JPS5333001A (en) Inter-selective-call receiver circuit
JPS5552123A (en) Constant voltage circuit
JPS5799030A (en) Signal switching circuit
JPS55138926A (en) Analog switch circuit
JPS561621A (en) Signal switching circuit
JPS5661837A (en) Antenna circuit