IT1248029B - Process of extracting a signal synchronous with the frequency of an amplitude- or angle-modulated carrier - Google Patents

Process of extracting a signal synchronous with the frequency of an amplitude- or angle-modulated carrier

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Publication number
IT1248029B
IT1248029B ITMI911601A ITMI911601A IT1248029B IT 1248029 B IT1248029 B IT 1248029B IT MI911601 A ITMI911601 A IT MI911601A IT MI911601 A ITMI911601 A IT MI911601A IT 1248029 B IT1248029 B IT 1248029B
Authority
IT
Italy
Prior art keywords
angle
frequency
amplitude
extracting
modulated carrier
Prior art date
Application number
ITMI911601A
Other languages
Italian (it)
Inventor
Roberto Marengon
Original Assignee
Prod El Prodotti Elettronici S
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 Prod El Prodotti Elettronici S filed Critical Prod El Prodotti Elettronici S
Priority to ITMI911601A priority Critical patent/IT1248029B/en
Publication of ITMI911601A0 publication Critical patent/ITMI911601A0/en
Publication of ITMI911601A1 publication Critical patent/ITMI911601A1/en
Application granted granted Critical
Publication of IT1248029B publication Critical patent/IT1248029B/en

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Abstract

The invention relates to a process of extracting a signal (Fref) synchronous with the frequency (Fr) of an amplitude- or angle- modulated carrier, in which the carrier is transmitted by a reference transmitter and received by a conventional heterodyne receiver, which is suitably modified. The resulting synchronization signal (Fref) is locked directly to the nominal frequency (Fr) of the transmitter, independently of any angle or amplitude modulation imparted by an audio signal. This process provides a synchronization quality which is markedly better than that of systems used at present, for example those which attach a low frequency synchronization signal to a radio carrier. <IMAGE>
ITMI911601A 1991-06-11 1991-06-11 Process of extracting a signal synchronous with the frequency of an amplitude- or angle-modulated carrier IT1248029B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ITMI911601A IT1248029B (en) 1991-06-11 1991-06-11 Process of extracting a signal synchronous with the frequency of an amplitude- or angle-modulated carrier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI911601A IT1248029B (en) 1991-06-11 1991-06-11 Process of extracting a signal synchronous with the frequency of an amplitude- or angle-modulated carrier

Publications (3)

Publication Number Publication Date
ITMI911601A0 ITMI911601A0 (en) 1991-06-11
ITMI911601A1 ITMI911601A1 (en) 1992-12-11
IT1248029B true IT1248029B (en) 1995-01-05

Family

ID=11360090

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI911601A IT1248029B (en) 1991-06-11 1991-06-11 Process of extracting a signal synchronous with the frequency of an amplitude- or angle-modulated carrier

Country Status (1)

Country Link
IT (1) IT1248029B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008110992A1 (en) * 2007-03-15 2008-09-18 Selex Communications S.P.A. Improvements to synchronization methods for single-frequency simulcast mobile radio communication networks

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008110992A1 (en) * 2007-03-15 2008-09-18 Selex Communications S.P.A. Improvements to synchronization methods for single-frequency simulcast mobile radio communication networks
RU2461134C2 (en) * 2007-03-15 2012-09-10 Селекс Коммьюникейшнз С.П.А. Improvements to synchronisation methods for single-frequency simulcast mobile radio communication networks
US8688155B2 (en) 2007-03-15 2014-04-01 Selex Communications S.P.A. Synchronization methods for single-frequency simulcast mobile radio communication networks

Also Published As

Publication number Publication date
ITMI911601A0 (en) 1991-06-11
ITMI911601A1 (en) 1992-12-11

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TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970630