GB2239996B - Booster for a portable radio telephone - Google Patents

Booster for a portable radio telephone

Info

Publication number
GB2239996B
GB2239996B GB9000678A GB9000678A GB2239996B GB 2239996 B GB2239996 B GB 2239996B GB 9000678 A GB9000678 A GB 9000678A GB 9000678 A GB9000678 A GB 9000678A GB 2239996 B GB2239996 B GB 2239996B
Authority
GB
United Kingdom
Prior art keywords
booster
radio telephone
portable radio
telephone
portable
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
GB9000678A
Other versions
GB9000678D0 (en
GB2239996A (en
Inventor
Russell Denis Johnston
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.)
Nokia Oyj
Nokia Mobile Phones UK Ltd
Original Assignee
Nokia Mobile Phones Ltd
Technophone Ltd
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 Nokia Mobile Phones Ltd, Technophone Ltd filed Critical Nokia Mobile Phones Ltd
Priority to GB9000678A priority Critical patent/GB2239996B/en
Publication of GB9000678D0 publication Critical patent/GB9000678D0/en
Publication of GB2239996A publication Critical patent/GB2239996A/en
Application granted granted Critical
Publication of GB2239996B publication Critical patent/GB2239996B/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
    • H04B1/44—Transmit/receive switching
    • H04B1/48—Transmit/receive switching in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H03G3/3042—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers
    • 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
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
    • 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
    • H04B1/3827—Portable transceivers
    • H04B1/3877—Arrangements for enabling portable transceivers to be used in a fixed position, e.g. cradles or boosters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
    • H04B7/15535—Control of relay amplifier gain
GB9000678A 1990-01-12 1990-01-12 Booster for a portable radio telephone Expired - Fee Related GB2239996B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9000678A GB2239996B (en) 1990-01-12 1990-01-12 Booster for a portable radio telephone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9000678A GB2239996B (en) 1990-01-12 1990-01-12 Booster for a portable radio telephone

Publications (3)

Publication Number Publication Date
GB9000678D0 GB9000678D0 (en) 1990-03-14
GB2239996A GB2239996A (en) 1991-07-17
GB2239996B true GB2239996B (en) 1994-08-17

Family

ID=10669165

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9000678A Expired - Fee Related GB2239996B (en) 1990-01-12 1990-01-12 Booster for a portable radio telephone

Country Status (1)

Country Link
GB (1) GB2239996B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AR029028A1 (en) * 2000-01-14 2003-06-04 Ericsson Telefon Ab L M METHOD AND SYSTEM TO COMMUNICATE FIXED RADIOELECTRIC TERMINALS
US7825719B2 (en) 2008-12-29 2010-11-02 Advanced Energy Industries, Inc. System and method for wideband phase-adjustable common excitation

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB691865A (en) * 1950-05-19 1953-05-20 Gen Electric Co Ltd Improvements in or relating to relay station apparatus for use in telecommunication systems
GB1307888A (en) * 1969-05-23 1973-02-21 Telettra Lab Telefon Amplifying and repeating circuit for angle modulated signals
US4063173A (en) * 1976-04-01 1977-12-13 Motorola, Inc. Dual mode receiver
GB2015278A (en) * 1978-02-25 1979-09-05 Fujitsu Ltd Straight-through-repeater
US4188582A (en) * 1978-04-10 1980-02-12 Motorola, Inc. Simulcast transmission system having phase-locked remote transmitters
GB1570942A (en) * 1977-03-17 1980-07-09 British Aircraft Corp Ltd Radio frequency regenerators
EP0036431A1 (en) * 1979-09-27 1981-09-30 Toyo Communication Equipment Co.,Ltd. Transmitter having a phase-locked loop
EP0135154A2 (en) * 1983-08-18 1985-03-27 Nec Corporation Apparatus for controlling transmission output power
EP0302455A2 (en) * 1987-08-03 1989-02-08 Allen Telecom Group, Inc. Booster

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB691865A (en) * 1950-05-19 1953-05-20 Gen Electric Co Ltd Improvements in or relating to relay station apparatus for use in telecommunication systems
GB1307888A (en) * 1969-05-23 1973-02-21 Telettra Lab Telefon Amplifying and repeating circuit for angle modulated signals
US4063173A (en) * 1976-04-01 1977-12-13 Motorola, Inc. Dual mode receiver
GB1570942A (en) * 1977-03-17 1980-07-09 British Aircraft Corp Ltd Radio frequency regenerators
GB2015278A (en) * 1978-02-25 1979-09-05 Fujitsu Ltd Straight-through-repeater
US4188582A (en) * 1978-04-10 1980-02-12 Motorola, Inc. Simulcast transmission system having phase-locked remote transmitters
EP0036431A1 (en) * 1979-09-27 1981-09-30 Toyo Communication Equipment Co.,Ltd. Transmitter having a phase-locked loop
EP0135154A2 (en) * 1983-08-18 1985-03-27 Nec Corporation Apparatus for controlling transmission output power
EP0302455A2 (en) * 1987-08-03 1989-02-08 Allen Telecom Group, Inc. Booster

Also Published As

Publication number Publication date
GB9000678D0 (en) 1990-03-14
GB2239996A (en) 1991-07-17

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Legal Events

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

Effective date: 20080112