JPS56157133A - Receiver - Google Patents

Receiver

Info

Publication number
JPS56157133A
JPS56157133A JP6013980A JP6013980A JPS56157133A JP S56157133 A JPS56157133 A JP S56157133A JP 6013980 A JP6013980 A JP 6013980A JP 6013980 A JP6013980 A JP 6013980A JP S56157133 A JPS56157133 A JP S56157133A
Authority
JP
Japan
Prior art keywords
switch
attenuation
comparator
opened
output
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
JP6013980A
Other languages
Japanese (ja)
Inventor
Kazuyuki Nishino
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP6013980A priority Critical patent/JPS56157133A/en
Publication of JPS56157133A publication Critical patent/JPS56157133A/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)
  • Control Of Amplification And Gain Control (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Details Of Aerials (AREA)

Abstract

PURPOSE:To secure a dynamic range and reduce a distortion, a cross modulation and a mutual modulation disturbance, by forming both an attenuating means and an amplifying means in a body with an antenna element. CONSTITUTION:When a command switch SW1 of the receiver main body 1 is applied, the output A of a comparator 40 is set at a high level. Thus an antenna induced signal receives an attenuation since the variable impedance circuits 38 and 39 are activated to have a low impedance, respectively. When the SW1 is opened, the output A of comparator 40 is turned to a low level. And the impedances of the circuits 38 and 39 become infinite, and thus the antenna induced signal receives no attenuation. Accordingly the switch SW1 is applied in such case the field intensity increases to start saturation of a circuit. As a result, the signal is attenuated to suppress the saturating action. The switch SW1 is opened in the medium/weak field to ensure a reception with a high sensitivity.
JP6013980A 1980-05-07 1980-05-07 Receiver Pending JPS56157133A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6013980A JPS56157133A (en) 1980-05-07 1980-05-07 Receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6013980A JPS56157133A (en) 1980-05-07 1980-05-07 Receiver

Publications (1)

Publication Number Publication Date
JPS56157133A true JPS56157133A (en) 1981-12-04

Family

ID=13133501

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6013980A Pending JPS56157133A (en) 1980-05-07 1980-05-07 Receiver

Country Status (1)

Country Link
JP (1) JPS56157133A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58184938U (en) * 1982-05-31 1983-12-08 クラリオン株式会社 AM/FM common amplifier circuit
GB2389006A (en) * 2002-05-24 2003-11-26 Motorola Inc Reducing intermodulation interference in a receiver

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58184938U (en) * 1982-05-31 1983-12-08 クラリオン株式会社 AM/FM common amplifier circuit
GB2389006A (en) * 2002-05-24 2003-11-26 Motorola Inc Reducing intermodulation interference in a receiver
GB2389006B (en) * 2002-05-24 2004-09-08 Motorola Inc Wireless communication unit and method for improving a radio receiver's intermodulation interference

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