JPS5768934A - Receiver - Google Patents

Receiver

Info

Publication number
JPS5768934A
JPS5768934A JP14547380A JP14547380A JPS5768934A JP S5768934 A JPS5768934 A JP S5768934A JP 14547380 A JP14547380 A JP 14547380A JP 14547380 A JP14547380 A JP 14547380A JP S5768934 A JPS5768934 A JP S5768934A
Authority
JP
Japan
Prior art keywords
reception level
band width
bpf32
impedance
controlling
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
JP14547380A
Other languages
Japanese (ja)
Inventor
Toshinori Yokoe
Sadao Aya
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 Ltd
Original Assignee
Fujitsu 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 Ltd filed Critical Fujitsu Ltd
Priority to JP14547380A priority Critical patent/JPS5768934A/en
Publication of JPS5768934A publication Critical patent/JPS5768934A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/16—Automatic control
    • H03G5/24—Automatic control in frequency-selective amplifiers

Landscapes

  • Circuits Of Receivers In General (AREA)
  • Noise Elimination (AREA)

Abstract

PURPOSE:To achieve a receiver having band width corresponding to the reception level, by controlling the impedance of a diode through the reception level, controlling Q characteristics of an inductance, and controlling the band width of a variable BPF. CONSTITUTION:A reception signal converted into an intermediate frequency at AGC.AMP7' is inputted to a feedback amplifier 8, and the ouput is outputted through a diode D10, an inductance L12, a capacitor C13, and an amplifier 14. A part of the output is detected 15 and inputted to an AGC terminal 17 as an AGC signal after ampliffication 16. The gain of the AMP7' is increased when the reception level of the lowers, and the impedance of the D10 is lowered. When the reception level is increased, the gain of the 7'is decreased, and the impedance of the D10 is increased. Thus, the Q characteristics of the L12 of a variable BPF32 is higher when the reception level is lower, the band width is narrower for the BPF32 and the band width of the BPF32 is wider when the reception level is higher.
JP14547380A 1980-10-17 1980-10-17 Receiver Pending JPS5768934A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14547380A JPS5768934A (en) 1980-10-17 1980-10-17 Receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14547380A JPS5768934A (en) 1980-10-17 1980-10-17 Receiver

Publications (1)

Publication Number Publication Date
JPS5768934A true JPS5768934A (en) 1982-04-27

Family

ID=15386055

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14547380A Pending JPS5768934A (en) 1980-10-17 1980-10-17 Receiver

Country Status (1)

Country Link
JP (1) JPS5768934A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0111173A2 (en) * 1982-11-12 1984-06-20 Deutsche Thomson-Brandt GmbH Circuit arrangement for controlling the gain of preamplifier stages
EP0242444A2 (en) * 1986-04-17 1987-10-28 Robert Bosch Gmbh Mobile radio receiver
EP0369465A2 (en) * 1988-11-18 1990-05-23 Fujitsu Limited A relay receiver

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0111173A2 (en) * 1982-11-12 1984-06-20 Deutsche Thomson-Brandt GmbH Circuit arrangement for controlling the gain of preamplifier stages
EP0242444A2 (en) * 1986-04-17 1987-10-28 Robert Bosch Gmbh Mobile radio receiver
EP0369465A2 (en) * 1988-11-18 1990-05-23 Fujitsu Limited A relay receiver

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