IT1131352B - DEMODULATOR - Google Patents
DEMODULATORInfo
- Publication number
- IT1131352B IT1131352B IT22867/80A IT2286780A IT1131352B IT 1131352 B IT1131352 B IT 1131352B IT 22867/80 A IT22867/80 A IT 22867/80A IT 2286780 A IT2286780 A IT 2286780A IT 1131352 B IT1131352 B IT 1131352B
- Authority
- IT
- Italy
- Prior art keywords
- demodulator
- Prior art date
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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7922417A GB2052196A (en) | 1979-06-27 | 1979-06-27 | Demodulators |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8022867A0 IT8022867A0 (en) | 1980-06-18 |
IT1131352B true IT1131352B (en) | 1986-06-18 |
Family
ID=10506144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT22867/80A IT1131352B (en) | 1979-06-27 | 1980-06-18 | 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 |
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 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 |
---|---|
JPS568944A (en) | 1981-01-29 |
NL8003663A (en) | 1980-12-30 |
IT8022867A0 (en) | 1980-06-18 |
DK275980A (en) | 1980-12-28 |
FR2460069A1 (en) | 1981-01-16 |
BR8003834A (en) | 1981-01-13 |
DE3023773A1 (en) | 1981-01-15 |
IL60172A0 (en) | 1980-07-31 |
GB2052196A (en) | 1981-01-21 |
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