ES482039A1 - Mejoras en disposiciones generadoras de frecuencias multipleseleccionables de transmisor y receptor de radio. - Google Patents
Mejoras en disposiciones generadoras de frecuencias multipleseleccionables de transmisor y receptor de radio.Info
- Publication number
- ES482039A1 ES482039A1 ES482039A ES482039A ES482039A1 ES 482039 A1 ES482039 A1 ES 482039A1 ES 482039 A ES482039 A ES 482039A ES 482039 A ES482039 A ES 482039A ES 482039 A1 ES482039 A1 ES 482039A1
- Authority
- ES
- Spain
- Prior art keywords
- synthesizer
- receiver
- transmitter
- channel
- phase
- 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.)
- Expired
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
- H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
- H04B1/405—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with multiple discrete channels
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/22—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using more than one loop
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Transmitters (AREA)
- Transceivers (AREA)
- Devices For Supply Of Signal Current (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Se conecta en asociación un generador de frecuencia múltiple, un sintetizador de canal, un sintetizador de transmisor y un sintetizador de receptor. El sintetizador de canal comprende un oscilador de referencia y un oscilador controlado en voltaje, conectado en un lazo de fase bloqueada para procurar una frecuencia seleccionable de canal. La frecuencia de canal se aplica al sintetizador de transmisor, que comprende un oscilador de referencia modulado, un oscilador controlado en voltaje y un mezclador conectado en un lazo bloqueado en fase. La frecuencia de salida del sintetizador de transmisor se mezcla con la frecuencia de referencia y la diferencia entre las dos frecuencias mezcladas y la frecuencia de canal seleccionada se usa para controlar la frecuencia de salida del sintetizador de transmisor.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/920,372 US4194151A (en) | 1978-06-29 | 1978-06-29 | Multifrequency generator |
Publications (1)
Publication Number | Publication Date |
---|---|
ES482039A1 true ES482039A1 (es) | 1980-02-16 |
Family
ID=25443624
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES482039A Expired ES482039A1 (es) | 1978-06-29 | 1979-06-28 | Mejoras en disposiciones generadoras de frecuencias multipleseleccionables de transmisor y receptor de radio. |
Country Status (5)
Country | Link |
---|---|
US (1) | US4194151A (es) |
JP (1) | JPS5520089A (es) |
AU (1) | AU4793379A (es) |
ES (1) | ES482039A1 (es) |
MX (1) | MX147630A (es) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4449246A (en) * | 1980-05-02 | 1984-05-15 | Harris Corporation | Orderwire communication system |
US4470049A (en) * | 1982-03-03 | 1984-09-04 | Raytheon Company | Transmitter receiver operating at 94 GHz |
US4476575A (en) * | 1982-12-13 | 1984-10-09 | General Electric Company | Radio transceiver |
US4520474A (en) * | 1983-12-05 | 1985-05-28 | Motorola, Inc. | Duplex communication transceiver with modulation cancellation |
US5053722A (en) * | 1990-12-20 | 1991-10-01 | Hughes Aircraft Company | Fault-tolerant, wideband radar microwave signal generator |
KR940007469B1 (ko) * | 1991-05-23 | 1994-08-18 | 삼성전자 주식회사 | 이동 무선전화기에 있어서 주파수 소스회로 |
JPH05300048A (ja) * | 1992-04-14 | 1993-11-12 | Motorola Inc | 無線周波送受信機およびその動作方法 |
US5317285A (en) * | 1993-02-26 | 1994-05-31 | Motorola, Inc. | Frequency synthesizer employing a continuously adaptive phase detector and method |
DE19614979C2 (de) | 1995-04-20 | 2001-05-17 | Fujitsu Ltd | Hochfrequenz-Sende-Empfangs-Vorrichtung zur Datenkommunikation |
FR2786342B1 (fr) * | 1998-08-28 | 2004-04-02 | Samsung Electronics Co Ltd | Synthetiseur de frequence et procede de saut de frequence double avec un temps de verrouillage rapide |
JP3603995B2 (ja) * | 1999-03-31 | 2004-12-22 | シャープ株式会社 | 高周波無線通信装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3409836A (en) * | 1964-08-17 | 1968-11-05 | Gen Dynamics Corp | Frequency synthesizer for communication systems |
US3416096A (en) * | 1967-02-01 | 1968-12-10 | Gen Dynamics Corp | Frequency synthesizer systems for generating accurate radio frequency signals of selected frequencies |
US3895311A (en) * | 1974-06-14 | 1975-07-15 | Comstron Corp | Direct programmed differential synthesizers |
US4097816A (en) * | 1977-07-20 | 1978-06-27 | General Research Of Electronics, Inc. | Tuning system |
US4114110A (en) * | 1977-12-01 | 1978-09-12 | The United States Of America As Represented By The Secretary Of The Army | Frequency synthesizer |
-
1978
- 1978-06-29 US US05/920,372 patent/US4194151A/en not_active Expired - Lifetime
-
1979
- 1979-06-11 AU AU47933/79A patent/AU4793379A/en not_active Abandoned
- 1979-06-26 JP JP7978279A patent/JPS5520089A/ja active Pending
- 1979-06-28 MX MX178289A patent/MX147630A/es unknown
- 1979-06-28 ES ES482039A patent/ES482039A1/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
AU4793379A (en) | 1980-01-03 |
US4194151A (en) | 1980-03-18 |
JPS5520089A (en) | 1980-02-13 |
MX147630A (es) | 1983-01-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
SE7705875L (sv) | Flerkanalsystem | |
ES386198A1 (es) | Mejoras en la construccion de receptores de radiodifusion para la recepcion de banda de lado unico. | |
ES482039A1 (es) | Mejoras en disposiciones generadoras de frecuencias multipleseleccionables de transmisor y receptor de radio. | |
FI892405A0 (fi) | Foerfarande foer alstring av frekvenser i en digital radiotelefon. | |
GB551472A (en) | Improvements in modulated high frequency carrier wave signalling systems | |
GB1445733A (en) | Underwater transmission system | |
JPS57178435A (en) | Fm transmitter and receiver | |
FR2386202A1 (fr) | Dispositif de test en local pour un equipement de transmission de donnees duplex | |
JPS5673936A (en) | S/n monitor | |
GB924647A (en) | An arrangement comprising apparatus for the sending and receiving of information by phase shift carrier transmission | |
GB1060173A (en) | Frequency diversity transmitting system | |
JPS5579541A (en) | Mobile radio equipment | |
GB1046923A (en) | Improvements in radio jamming apparatus | |
JPS55166348A (en) | Multi-channel radio transmitter/receiver | |
JPS57132444A (en) | Carrier frequency controlling system for slave station applied to multidirection multiplex communication system | |
JPS57111150A (en) | Radio communication system | |
JPS5795729A (en) | Radio transmitter and receiver | |
FR2297463A1 (fr) | Dispositif de distribution de programmes sonores par cable reseau tv/fm | |
JPS551718A (en) | Receiver for television audio multiplex broadcast | |
JPS5772434A (en) | Communication system | |
JPS5469007A (en) | Transceiver | |
JPS53138621A (en) | Radio receiver | |
JPS5340209A (en) | Fm radio receiver | |
DE69734919D1 (de) | Fsk-empfänger | |
JPS5767337A (en) | Community receiving device |