JPS5447506A - Demodulator for plural carrier waves - Google Patents

Demodulator for plural carrier waves

Info

Publication number
JPS5447506A
JPS5447506A JP11401177A JP11401177A JPS5447506A JP S5447506 A JPS5447506 A JP S5447506A JP 11401177 A JP11401177 A JP 11401177A JP 11401177 A JP11401177 A JP 11401177A JP S5447506 A JPS5447506 A JP S5447506A
Authority
JP
Japan
Prior art keywords
demodulation
constitution
output
signal
local oscillation
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
JP11401177A
Other languages
Japanese (ja)
Inventor
Yoichi Moriya
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 JP11401177A priority Critical patent/JPS5447506A/en
Publication of JPS5447506A publication Critical patent/JPS5447506A/en
Pending legal-status Critical Current

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  • Superheterodyne Receivers (AREA)

Abstract

PURPOSE: To regenerate the demodulation signal of each channel and to simplify the constitution for the SCPC/FM system, by switching the local oscillation frequencies in sequency to perform sampling corresponding to each carrier wave.
CONSTITUTION: The output signal of reference signal oscillator 51 is converted to the code switch pulse of 96k Hz at control pulse generator 50 and then applied to code transmitter 49. Then 12 sets of frequency setting codes are supplied in sequence to frequency synthesizer 36, and the output demodulates (3) the modulated waves sequentially for the 12 channels of terminal 1. And each demodulation output is sampled and reserved in circuits 52∼63 from circuit 50 via pulse (c), and then each sampling value is regenerated to the demodulation signal through LPF64∼75 to be delivered via amplifiers 76∼87. As a result, the demodulation becomes possible with one unit of the demodulator containing the frequency converter and the synthesizer for local oscillation each, thus simplifying the constitution
COPYRIGHT: (C)1979,JPO&Japio
JP11401177A 1977-09-22 1977-09-22 Demodulator for plural carrier waves Pending JPS5447506A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11401177A JPS5447506A (en) 1977-09-22 1977-09-22 Demodulator for plural carrier waves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11401177A JPS5447506A (en) 1977-09-22 1977-09-22 Demodulator for plural carrier waves

Publications (1)

Publication Number Publication Date
JPS5447506A true JPS5447506A (en) 1979-04-14

Family

ID=14626806

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11401177A Pending JPS5447506A (en) 1977-09-22 1977-09-22 Demodulator for plural carrier waves

Country Status (1)

Country Link
JP (1) JPS5447506A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5532760A (en) * 1993-09-29 1996-07-02 Uniden Corporation Receiver capable of selectively receiving satellite broadcast TV signals and audio SCPC signals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5532760A (en) * 1993-09-29 1996-07-02 Uniden Corporation Receiver capable of selectively receiving satellite broadcast TV signals and audio SCPC signals

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