JPS568944A - Demodulator - Google Patents

Demodulator

Info

Publication number: JPS568944A
Authority: JP; Japan
Prior art keywords: demodulator
Prior art date: 1979-06-27
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

JP8639280A

Other languages

Japanese (ja)

Inventor

Keisu Richiyaados Kurisutofuaa

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.)

Plessey Handel und Investments AG

Original Assignee

Plessey Handel und Investments AG

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.)

1979-06-27

Filing date

1980-06-25

Publication date

1981-01-29

1980-06-25 Application filed by Plessey Handel und Investments AG filed Critical Plessey Handel und Investments AG

1981-01-29 Publication of JPS568944A publication Critical patent/JPS568944A/en

Status 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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/54—Circuits using the same frequency for two directions of communication
- H04B1/56—Circuits using the same frequency for two directions of communication with provision for simultaneous communication in two directions
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/16—Multiple-frequency-changing
- H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
- H03D7/166—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature using two or more quadrature frequency translation stages
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/16—Multiple-frequency-changing
- H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
- H03D7/163—Multiple-frequency-changing all the frequency changers being connected in cascade the local oscillations of at least two of the frequency changers being derived from a single oscillator
- 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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
- H04B1/408—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency the transmitter oscillator frequency being identical to the receiver local oscillator frequency

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Power Engineering (AREA)
Superheterodyne Receivers (AREA)
Transceivers (AREA)

JP8639280A 1979-06-27 1980-06-25 Demodulator Pending JPS568944A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB7922417A GB2052196A (en)	1979-06-27	1979-06-27	Demodulators

Publications (1)

Publication Number	Publication Date
JPS568944A true JPS568944A (en)	1981-01-29

Family

ID=10506144

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
JP8639280A Pending JPS568944A (en)	1979-06-27	1980-06-25	Demodulator

Country Status (9)

Country	Link
JP (1)	JPS568944A (en)
BR (1)	BR8003834A (en)
DE (1)	DE3023773A1 (en)
DK (1)	DK275980A (en)
FR (1)	FR2460069A1 (en)
GB (1)	GB2052196A (en)
IL (1)	IL60172A0 (en)
IT (1)	IT1131352B (en)
NL (1)	NL8003663A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4499426A (en) *	1980-07-02	1985-02-12	Motorola, Inc.	Baseband discriminator for frequency or transform modulation
GB2300318B (en) *	1981-02-10	1997-03-19	Plessey Co Ltd	Improvements in or relating to transceivers
NL8301179A (en) *	1983-04-01	1984-11-01	Philips Nv	HF SIGNAL RECEIVER FITTED WITH A PAIR OF PARALLEL SIGNAL ROADS.
NL8301651A (en) *	1983-05-10	1984-12-03	Philips Nv	MIXING DEVICE EQUIPPED WITH FIRST AND SECOND SQUARE STAGES.
JPS60224337A (en) *	1984-04-23	1985-11-08	Nec Corp	Receiving circuit
AT394918B (en) *	1990-04-05	1992-07-27	Klaus Dipl Ing Dr Kerschbaumer	METHOD FOR DIRECTLY DEMODULATING AN RF SIGNAL
JP2800858B2 (en) *	1991-09-18	1998-09-21	日本電気株式会社	Wireless telephone equipment
US5389964A (en) *	1992-12-30	1995-02-14	Information Resources, Inc.	Broadcast channel substitution method and apparatus
US5404161A (en) *	1993-07-27	1995-04-04	Information Resources, Inc.	Tuned signal detector for use with a radio frequency receiver
US6941573B1 (en)	1996-08-07	2005-09-06	Information Resources, Inc.	Television distribution system for signal substitution
US6633550B1 (en)	1997-02-20	2003-10-14	Telefonaktiebolaget Lm Ericsson (Publ)	Radio transceiver on a chip
FR2794311B1 (en)	1999-05-27	2007-12-14	France Telecom	CARRIER FREQUENCY REDUCING PASSET FILTER
GB0122196D0 (en) *	2001-09-14	2001-10-31	Roke Manor Research	Improvements to the n-plex transceiver

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1178539A (en) *	1966-12-14	1970-01-21	Plessey Btr Ltd	Improvements in Timing Arrangements for Electrical Signalling Systems
US3577088A (en) *	1969-02-03	1971-05-04	Us Air Force	Sine-cosine to magnitude-phase angle converter
DE2358288A1 (en) *	1973-11-22	1975-06-05	Standard Elektrik Lorenz Ag	RECEIVER FOR FREQUENCY-MODULATED HF SIGNALS
IN146303B (en) *	1976-03-16	1979-04-21	Plessey Handel Investment Ag

1979
- 1979-06-27 GB GB7922417A patent/GB2052196A/en not_active Withdrawn
1980
- 1980-05-27 IL IL60172A patent/IL60172A0/en unknown
- 1980-06-18 IT IT22867/80A patent/IT1131352B/en active
- 1980-06-19 BR BR8003834A patent/BR8003834A/en unknown
- 1980-06-24 NL NL8003663A patent/NL8003663A/en not_active Application Discontinuation
- 1980-06-25 JP JP8639280A patent/JPS568944A/en active Pending
- 1980-06-25 DE DE19803023773 patent/DE3023773A1/en not_active Withdrawn
- 1980-06-26 FR FR8014227A patent/FR2460069A1/en active Pending
- 1980-06-26 DK DK275980A patent/DK275980A/en unknown

Also Published As

Publication number	Publication date
IT8022867A0 (en)	1980-06-18
IL60172A0 (en)	1980-07-31
NL8003663A (en)	1980-12-30
FR2460069A1 (en)	1981-01-16
DE3023773A1 (en)	1981-01-15
DK275980A (en)	1980-12-28
IT1131352B (en)	1986-06-18
GB2052196A (en)	1981-01-21
BR8003834A (en)	1981-01-13

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