GB2289386B - Radio transmitter and method of control of transmit power increase - Google Patents

Radio transmitter and method of control of transmit power increase

Info

Publication number
GB2289386B
GB2289386B GB9408475A GB9408475A GB2289386B GB 2289386 B GB2289386 B GB 2289386B GB 9408475 A GB9408475 A GB 9408475A GB 9408475 A GB9408475 A GB 9408475A GB 2289386 B GB2289386 B GB 2289386B
Authority
GB
United Kingdom
Prior art keywords
control means
power
transmitter
transmit
signal
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
GB9408475A
Other versions
GB2289386A (en
GB9408475D0 (en
Inventor
David John Chater-Lea
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.)
Motorola Solutions UK Ltd
Original Assignee
Motorola 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 Motorola Ltd filed Critical Motorola Ltd
Priority to GB9408475A priority Critical patent/GB2289386B/en
Publication of GB9408475D0 publication Critical patent/GB9408475D0/en
Publication of GB2289386A publication Critical patent/GB2289386A/en
Application granted granted Critical
Publication of GB2289386B publication Critical patent/GB2289386B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • 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
    • H03G3/3047—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers for intermittent signals, e.g. burst signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A radio transmitter is described, having power control for increasing and decreasing the power of a transmit signal for use in, but not limited to, a time division multiple access (TDMA) radio system. The transmitter has frequency control means (11, 56) for tuning the transmitter to transmit a signal on a selected radio channel, power control means (13, 26) for increasing and decreasing the power of the signal for transmission in preselected time slots to and from a peak value, and control means (20) for causing the power control means to commence increasing the power while the frequency control means tunes the transmitter to transmit outside the selected radio channel and for causing the frequency control means to tune the transmitter to transmit the signal in the selected radio channel when the power has been increased to the peak value. By ramping up from outside the channel, a slower ramp-up can be achieved, giving rise to less interference. <IMAGE>
GB9408475A 1994-04-28 1994-04-28 Radio transmitter and method of control of transmit power increase Expired - Fee Related GB2289386B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9408475A GB2289386B (en) 1994-04-28 1994-04-28 Radio transmitter and method of control of transmit power increase

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9408475A GB2289386B (en) 1994-04-28 1994-04-28 Radio transmitter and method of control of transmit power increase

Publications (3)

Publication Number Publication Date
GB9408475D0 GB9408475D0 (en) 1994-06-22
GB2289386A GB2289386A (en) 1995-11-15
GB2289386B true GB2289386B (en) 1998-12-30

Family

ID=10754298

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9408475A Expired - Fee Related GB2289386B (en) 1994-04-28 1994-04-28 Radio transmitter and method of control of transmit power increase

Country Status (1)

Country Link
GB (1) GB2289386B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5809017A (en) * 1995-12-19 1998-09-15 Telefonaktiebolaget Lm Ericsson Method of minimizing undersirable RF emissions within a TDMA system
US5802450A (en) * 1996-04-19 1998-09-01 Ericsson Inc. Transmit sequencing
US5907419A (en) * 1997-10-20 1999-05-25 Interlink Electronics, Inc. Infrared communications scheme
TW411690B (en) * 1998-02-20 2000-11-11 Koninkl Philips Electronics Nv A power consumption reduction method in a digital mobile radio system and a mobile radio station
TW428388B (en) * 1998-02-20 2001-04-01 Koninkl Philips Electronics Nv A power consumption reduction method in a digital mobile radio system and a mobile radio station
CN1150685C (en) * 1998-02-20 2004-05-19 皇家菲利浦电子有限公司 Power consumption reduction method in digital mobile radio system and mobile radio station
FR2781323B1 (en) * 1998-07-16 2000-08-18 Alsthom Cge Alcatel TRANSMISSION PROCESS IN SUCCESSIVE WINDOWS
GB2512871A (en) * 2013-04-09 2014-10-15 Neul Ltd Reducing interference

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0307377A1 (en) * 1987-09-08 1989-03-15 Telefonaktiebolaget L M Ericsson Apparatus for avoiding spectrum spreading when switching a transmitter on and off
WO1993002519A1 (en) * 1991-07-22 1993-02-04 Motorola, Inc. Transition generating between on and off states of a radio frequency transmitter
GB2263027A (en) * 1991-06-03 1993-07-07 Motorola Inc Power amplifier ramp up method and apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0307377A1 (en) * 1987-09-08 1989-03-15 Telefonaktiebolaget L M Ericsson Apparatus for avoiding spectrum spreading when switching a transmitter on and off
GB2263027A (en) * 1991-06-03 1993-07-07 Motorola Inc Power amplifier ramp up method and apparatus
WO1993002519A1 (en) * 1991-07-22 1993-02-04 Motorola, Inc. Transition generating between on and off states of a radio frequency transmitter

Also Published As

Publication number Publication date
GB2289386A (en) 1995-11-15
GB9408475D0 (en) 1994-06-22

Similar Documents

Publication Publication Date Title
EP0667062A4 (en) Expanded microcomputer system for controlling radio frequency interference.
TW362318B (en) Method and apparatus for mitigating intermodulation effects in multiple-signal transmission systems
GB2317283B (en) Power control circuit for a radio frequency transmitter
AU4350497A (en) Simplified high frequency tuner and tuning method
EP0765043A3 (en) An energy-efficient time-division radio that reduces the induction of baseband interference
YU45114B (en) Receiver for radio - communications
HK1020811A1 (en) System and method for reducing interference generated by a digital communication device
CA2380923A1 (en) Method and apparatus for multiple band voltage controlled oscillator with noise immunity
GB2289386B (en) Radio transmitter and method of control of transmit power increase
EP0246658A3 (en) Transmitter/receiver apparatus
CA2131082A1 (en) Notch Filtering a Spread Spectrum Signal Using Fourier Series Coefficients
EP0654900A3 (en) Radio communication device with power control of transmission.
GB2274750A (en) Method and circuit for selecting tuning of a radio receiver
EP0827310A3 (en) Infra-red transmission of digital audio signals
DE3686898D1 (en)
DE3373247D1 (en) Tuner for a communication apparatus
BR9708704A (en) Method and apparatus for initiating a radio transmitting apparatus and method for preventing unwanted interference on neighboring radio channels
CA2207645A1 (en) Method and apparatus for signal transmission in cdma mobile communication system
WO1994008397A1 (en) Process for tuning a radio receiver by means of station keys
AU4893293A (en) Paging receiver and radio frequency channel searching method for the same
AU1039201A (en) Method of updating a control channel list in mobile communications system
EP0380074A3 (en) Subscriber station of subscriber radio system
AU519279B2 (en) Receiver tuning frequency presetting
KR930004452B1 (en) Channel frquency selection circuit
MX9706247A (en) System for reducing interference to electronic devices caused by discontinous transmission radiotransmitters.

Legal Events

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

Effective date: 19990330