JPS568944A - Demodulator - Google Patents
DemodulatorInfo
- Publication number
- JPS568944A JPS568944A JP8639280A JP8639280A JPS568944A JP S568944 A JPS568944 A JP S568944A JP 8639280 A JP8639280 A JP 8639280A JP 8639280 A JP8639280 A JP 8639280A JP S568944 A JPS568944 A JP S568944A
- Authority
- JP
- Japan
- Prior art keywords
- demodulator
- 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
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)
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)
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)
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 |
FI67641C (en) * | 1976-03-16 | 1985-04-10 | Plessey Overseas | SAENDAR / MOTTAGARE MED GEMENSAM KANAL |
-
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 DE DE19803023773 patent/DE3023773A1/en not_active Withdrawn
- 1980-06-25 JP JP8639280A patent/JPS568944A/en active Pending
- 1980-06-26 DK DK275980A patent/DK275980A/en unknown
- 1980-06-26 FR FR8014227A patent/FR2460069A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
IT1131352B (en) | 1986-06-18 |
NL8003663A (en) | 1980-12-30 |
BR8003834A (en) | 1981-01-13 |
DE3023773A1 (en) | 1981-01-15 |
IT8022867A0 (en) | 1980-06-18 |
FR2460069A1 (en) | 1981-01-16 |
GB2052196A (en) | 1981-01-21 |
IL60172A0 (en) | 1980-07-31 |
DK275980A (en) | 1980-12-28 |
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