JPS5541038A - Demodulation system for single side-band signal - Google Patents

Demodulation system for single side-band signal

Info

Publication number
JPS5541038A
JPS5541038A JP11423878A JP11423878A JPS5541038A JP S5541038 A JPS5541038 A JP S5541038A JP 11423878 A JP11423878 A JP 11423878A JP 11423878 A JP11423878 A JP 11423878A JP S5541038 A JPS5541038 A JP S5541038A
Authority
JP
Japan
Prior art keywords
signal
bpf
pilot signal
pilot
frequency converter
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
JP11423878A
Other languages
Japanese (ja)
Inventor
Kiyoshi Kondo
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 JP11423878A priority Critical patent/JPS5541038A/en
Publication of JPS5541038A publication Critical patent/JPS5541038A/en
Pending legal-status Critical Current

Links

Landscapes

  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

PURPOSE: To make small the size of pilot extraction BPF, by picking up the pilot signal at BPF from the output of the first frequency converter and demodulating the pilot signal corresponding to zero at the second local oscillator.
CONSTITUTION: The input signal from the antenna 1 produces the first intermediate frequency signal with the local oscillation signal of the first local oscillator 3 at the first frequency converter 2. A part of this signal is fed to the BPF 11 to pick up the pilot signal, it is fed to the pilot signal frequency converter 12 and mixed with the local oscillation signal of the second local oscillator 5, and the pilot signal corresponding to zero can be obtained through LPF 13 and amplifier 14. This pilot signal and the second intermediate frequency signal are mixed at the third frequency converter 8 to obtain the base band signal. Accordingly, since the pilot signal is picked up at the first intermediate frequency, the center frequency of BPF 11 is increased and the comparison band can be decreased to constitute small size and low cost BPF.
COPYRIGHT: (C)1980,JPO&Japio
JP11423878A 1978-09-16 1978-09-16 Demodulation system for single side-band signal Pending JPS5541038A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11423878A JPS5541038A (en) 1978-09-16 1978-09-16 Demodulation system for single side-band signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11423878A JPS5541038A (en) 1978-09-16 1978-09-16 Demodulation system for single side-band signal

Publications (1)

Publication Number Publication Date
JPS5541038A true JPS5541038A (en) 1980-03-22

Family

ID=14632715

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11423878A Pending JPS5541038A (en) 1978-09-16 1978-09-16 Demodulation system for single side-band signal

Country Status (1)

Country Link
JP (1) JPS5541038A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61242104A (en) * 1985-04-19 1986-10-28 Nippon Telegr & Teleph Corp <Ntt> Ssb modulation and demodulation system
JPS61288604A (en) * 1985-06-12 1986-12-18 フィリップス　エレクトロニクス　ネムローゼ　フェンノートシャップ Ssb signal demodulation and demodulator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61242104A (en) * 1985-04-19 1986-10-28 Nippon Telegr & Teleph Corp <Ntt> Ssb modulation and demodulation system
JPS61288604A (en) * 1985-06-12 1986-12-18 フィリップス　エレクトロニクス　ネムローゼ　フェンノートシャップ Ssb signal demodulation and demodulator
JP2588510B2 (en) * 1985-06-12 1997-03-05 フィリップス エレクトロニクス ネムローゼ フェンノートシャップ SSB signal demodulation method and demodulator

Similar Documents

Publication Publication Date Title
JPS524105A (en) Frequency synthesizer-method transmitter-receiver
JPS5328361A (en) Quadratur e phase detection circuit
JPS5541038A (en) Demodulation system for single side-band signal
JPS54100617A (en) Mixer circuit
JPS5612129A (en) Synthesizer type receiver
JPS5419641A (en) Fm demodulation circuit by phase tracking loop system
JPS53113462A (en) Frequency discriminator
JPS5353949A (en) Frequency discriminator
JPS52102626A (en) Tv receiver
JPS56103514A (en) Filter circuit
JPS5516542A (en) Signal processing circuit
JPS5318912A (en) Signal reception circuit of television receiver
JPS5246710A (en) Transmission circuit
JPS5350917A (en) Chrominance component recording system
JPS55127707A (en) Frequency-modulated wave demodulation system
JPS5683139A (en) Fm receiver
JPS5583361A (en) Fm demodulator circuit
JPS5518180A (en) Tuner
JPS5589762A (en) Searching method of failure point on overhead distribution line
JPS5510211A (en) Signal discrimination circuit
JPS57143906A (en) Fm demodulator for composite modulation system
JPS5525837A (en) Fm demodulator circuit
JPS5510210A (en) Signal discrimination circuit
JPS54138328A (en) Television tuner
JPS558168A (en) Signal identification circuit