GB1536927A - Subordinate transceiver station with synchronized transmitting means for duplex operations - Google Patents

Subordinate transceiver station with synchronized transmitting means for duplex operations

Info

Publication number
GB1536927A
GB1536927A GB30043/76A GB3004376A GB1536927A GB 1536927 A GB1536927 A GB 1536927A GB 30043/76 A GB30043/76 A GB 30043/76A GB 3004376 A GB3004376 A GB 3004376A GB 1536927 A GB1536927 A GB 1536927A
Authority
GB
United Kingdom
Prior art keywords
generator
mixer
frequency
oscillator
transmitting means
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
Application number
GB30043/76A
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Publication of GB1536927A publication Critical patent/GB1536927A/en
Expired 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
    • H04B1/50—Circuits using different frequencies for the two directions of communication
    • 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
    • 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)
  • Radio Relay Systems (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

1536927 Transceivers THOMSON-CSF 19 July 1976 [21 July 1975] 30043/76 Heading H3A In a transceiver including an antenna 301, a microwave oscillator 302 and a mixer 306, the centre frequency of the mixer output signal is stabilized by a main control circuit including a controlled generator 303 having a nominal frequency F and a comparator 305-309 providing indicative of the phase difference between signals derived from the mixer and generator outputs and is applied to a control input of the oscillator and an auxiliary control circuit 1306-1309 mixes the antenna received signal with a multiple of the generator 303 output frequency and controls the generator frequency via control devices 320, 321. The control device 320 may be a phase comparator or an envelope detector as in Fig. 3 (not shown). The oscillator 302 may be modulated by a signal applied at 313.
GB30043/76A 1975-07-21 1976-07-19 Subordinate transceiver station with synchronized transmitting means for duplex operations Expired GB1536927A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7522717A FR2319252A1 (en) 1975-07-21 1975-07-21 DUPLEX TRANSMISSION SYSTEM WITH BILATERAL SYNCHRONIZATION

Publications (1)

Publication Number Publication Date
GB1536927A true GB1536927A (en) 1978-12-29

Family

ID=9158148

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30043/76A Expired GB1536927A (en) 1975-07-21 1976-07-19 Subordinate transceiver station with synchronized transmitting means for duplex operations

Country Status (7)

Country Link
AR (1) AR210504A1 (en)
BR (1) BR7604598A (en)
DE (1) DE2632787C2 (en)
FR (1) FR2319252A1 (en)
GB (1) GB1536927A (en)
NL (1) NL7608025A (en)
SE (1) SE7608282L (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IN146303B (en) * 1976-03-16 1979-04-21 Plessey Handel Investment Ag
WO1994022275A1 (en) * 1993-03-18 1994-09-29 Luigi Capasso System comprising multiple wireless microphone/transmitter units using a common carrier

Also Published As

Publication number Publication date
AR210504A1 (en) 1977-08-15
FR2319252A1 (en) 1977-02-18
DE2632787A1 (en) 1977-02-10
BR7604598A (en) 1977-08-02
DE2632787C2 (en) 1984-09-06
NL7608025A (en) 1977-01-25
SE7608282L (en) 1977-01-22
FR2319252B1 (en) 1978-07-28

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee