JPS5623037A - Antenna input circuit - Google Patents

Antenna input circuit

Info

Publication number
JPS5623037A
JPS5623037A JP9888279A JP9888279A JPS5623037A JP S5623037 A JPS5623037 A JP S5623037A JP 9888279 A JP9888279 A JP 9888279A JP 9888279 A JP9888279 A JP 9888279A JP S5623037 A JPS5623037 A JP S5623037A
Authority
JP
Japan
Prior art keywords
capacitor
image
antenna
capacity
input 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
JP9888279A
Other languages
Japanese (ja)
Other versions
JPS5831776B2 (en
Inventor
Kazuo Takayama
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.)
Denso Ten Ltd
Original Assignee
Denso Ten 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 Denso Ten Ltd filed Critical Denso Ten Ltd
Priority to JP9888279A priority Critical patent/JPS5831776B2/en
Priority to DE3028099A priority patent/DE3028099C2/en
Priority to US06/172,407 priority patent/US4369446A/en
Priority to NLAANVRAGE8004346,A priority patent/NL188259C/en
Priority to AU60909/80A priority patent/AU531465B2/en
Publication of JPS5623037A publication Critical patent/JPS5623037A/en
Publication of JPS5831776B2 publication Critical patent/JPS5831776B2/en
Expired 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 increase the image interference ratio, by providing the capacitor in resonance near the tuning frequency. CONSTITUTION:The antenna electromotive force EA is incoming to the input terminal P1 via the capacitive antenna consisting of the antenna capacity Ca and cable capacity Cb. The tuning of the input circuit is made with the resonance circuit consisting of the auto-transformer T1, voltage variable capacity capacitor C, and capacitor Cg. The output terminal P5 is provided with the capacitor Cd to lower the output impedance. The capacitor Cx connected to the capacitor Cg is for the improvement of image interference ratio, which zeroes the output voltage at the image frequency f1 by adjusting the phase between the currents flowing to the capacitors Cg, Cd. Thus, the image ration can be improved even for the overall characteristics.
JP9888279A 1979-08-02 1979-08-02 antenna input circuit Expired JPS5831776B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP9888279A JPS5831776B2 (en) 1979-08-02 1979-08-02 antenna input circuit
DE3028099A DE3028099C2 (en) 1979-08-02 1980-07-24 Antenna input circuit
US06/172,407 US4369446A (en) 1979-08-02 1980-07-25 Antenna input circuit
NLAANVRAGE8004346,A NL188259C (en) 1979-08-02 1980-07-29 AERIAL INPUT CIRCUIT FOR ADAPTING AN AM RECEIVER TO A CAPACITIVE ANTENNA.
AU60909/80A AU531465B2 (en) 1979-08-02 1980-07-30 Antenna input circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9888279A JPS5831776B2 (en) 1979-08-02 1979-08-02 antenna input circuit

Publications (2)

Publication Number Publication Date
JPS5623037A true JPS5623037A (en) 1981-03-04
JPS5831776B2 JPS5831776B2 (en) 1983-07-08

Family

ID=14231515

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9888279A Expired JPS5831776B2 (en) 1979-08-02 1979-08-02 antenna input circuit

Country Status (1)

Country Link
JP (1) JPS5831776B2 (en)

Also Published As

Publication number Publication date
JPS5831776B2 (en) 1983-07-08

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