GB2188212B - Single frequency transceiver - Google Patents

Single frequency transceiver

Info

Publication number
GB2188212B
GB2188212B GB8706314A GB8706314A GB2188212B GB 2188212 B GB2188212 B GB 2188212B GB 8706314 A GB8706314 A GB 8706314A GB 8706314 A GB8706314 A GB 8706314A GB 2188212 B GB2188212 B GB 2188212B
Authority
GB
United Kingdom
Prior art keywords
single frequency
frequency transceiver
transceiver
frequency
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 - Fee Related
Application number
GB8706314A
Other versions
GB2188212A (en
GB8706314D0 (en
Inventor
David William James Holmes
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.)
British Telecommunications PLC
Original Assignee
British Telecommunications PLC
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 British Telecommunications PLC filed Critical British Telecommunications PLC
Publication of GB8706314D0 publication Critical patent/GB8706314D0/en
Publication of GB2188212A publication Critical patent/GB2188212A/en
Application granted granted Critical
Publication of GB2188212B publication Critical patent/GB2188212B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
    • H03J5/0272—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer
    • H03J5/0281—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer the digital values being held in an auxiliary non erasable memory

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Transceivers (AREA)
GB8706314A 1986-03-21 1987-03-17 Single frequency transceiver Expired - Fee Related GB2188212B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB868607022A GB8607022D0 (en) 1986-03-21 1986-03-21 Single frequency transceiver

Publications (3)

Publication Number Publication Date
GB8706314D0 GB8706314D0 (en) 1987-04-23
GB2188212A GB2188212A (en) 1987-09-23
GB2188212B true GB2188212B (en) 1990-07-04

Family

ID=10594999

Family Applications (2)

Application Number Title Priority Date Filing Date
GB868607022A Pending GB8607022D0 (en) 1986-03-21 1986-03-21 Single frequency transceiver
GB8706314A Expired - Fee Related GB2188212B (en) 1986-03-21 1987-03-17 Single frequency transceiver

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB868607022A Pending GB8607022D0 (en) 1986-03-21 1986-03-21 Single frequency transceiver

Country Status (1)

Country Link
GB (2) GB8607022D0 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8806194D0 (en) * 1988-03-16 1988-04-13 Shaye Communications Ltd Transceivers
JP2850160B2 (en) * 1991-01-25 1999-01-27 松下電器産業株式会社 Time division duplex wireless transceiver
GB2261346B (en) * 1991-11-08 1995-05-24 Marconi Instruments Ltd Transmitter/receiver output/input stages
FI102798B1 (en) * 1992-07-28 1999-02-15 Nokia Mobile Phones Ltd Circuit device in the radio frequency section of a digital mobile phone
US5453714A (en) * 1993-03-10 1995-09-26 National Semiconductor Corporation Binary FM demodulator with self-adjusting resonant operating frequency according to demodulated binary output signal duty cycle
WO1994020888A2 (en) * 1993-03-10 1994-09-15 National Semiconductor Corporation Radio frequency telecommunications transceiver
US5511236A (en) * 1993-12-07 1996-04-23 National Semiconductor Corporation Half duplex RF transceiver
WO1999007081A1 (en) * 1997-07-29 1999-02-11 Leopold Kostal Gmbh & Co. Kg Rf transceiver and operating method
MXPA02008348A (en) 2000-02-28 2002-12-13 Thomson Licensing Sa Architecture for cordless telephones.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB769543A (en) * 1953-06-15 1957-03-06 Marconi Wireless Telegraph Co Improvements in or relating to electrical servo and feedback automatic control circuit arrangements

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB769543A (en) * 1953-06-15 1957-03-06 Marconi Wireless Telegraph Co Improvements in or relating to electrical servo and feedback automatic control circuit arrangements

Also Published As

Publication number Publication date
GB2188212A (en) 1987-09-23
GB8706314D0 (en) 1987-04-23
GB8607022D0 (en) 1986-04-30

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Legal Events

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

Effective date: 20030317