GB0011950D0 - Wireless tranceivers - Google Patents

Wireless tranceivers

Info

Publication number
GB0011950D0
GB0011950D0 GB0011950A GB0011950A GB0011950D0 GB 0011950 D0 GB0011950 D0 GB 0011950D0 GB 0011950 A GB0011950 A GB 0011950A GB 0011950 A GB0011950 A GB 0011950A GB 0011950 D0 GB0011950 D0 GB 0011950D0
Authority
GB
Grant status
Grant
Patent type
Prior art keywords
control
signal
transmitter
bias
current
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.)
Withdrawn
Application number
GB0011950A
Other versions
GB2362523A (en )
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.)
Acer Peripherals Inc
Original Assignee
Acer Peripherals Inc
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
Grant date

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details 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
    • H04B1/38Transceivers, 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
    • H04B1/40Circuits
    • H04B1/50Circuits using different frequencies for the two directions of communication
    • H04B1/52Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03GCONTROL OF AMPLIFICATION
    • H03G3/00Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20Automatic control
    • H03G3/30Automatic control in amplifiers having semiconductor devices
    • H03G3/3052Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H03G3/3068Circuits generating control signals for both R.F. and I.F. stages
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATIONS NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0225Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0245Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal according to signal strength
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks
    • Y02D70/40According to the transmission technology

Abstract

The bias current of a low noise amplifier (LNA) 22 in the receiver circuit 18 of a transceiver is controlled to a high value by a baseband processor 14 to maintain linearity in the presence of leakage of a signal from the transmitter. As the signal from the transmitter is lowered the bias current is controlled low to maintain efficiency. Figure 3 shows the use of a control voltage converter 62 to derive the bias current control from the transmitter gain control signal. Figure 4 shows the use of a control voltage converter 72 to derive the bias current control from the receiver gain control signal (which has an inverse relation to the transmitter gain control signal). Use in CDMA and TDMA mobile phones is envisaged.
GB0011950A 1999-05-28 2000-05-17 Wireless tranceivers Withdrawn GB0011950D0 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
TW88108816 1999-05-28
GB0011950A GB0011950D0 (en) 1999-05-28 2000-05-17 Wireless tranceivers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0011950A GB0011950D0 (en) 1999-05-28 2000-05-17 Wireless tranceivers
DE2000126152 DE10026152C2 (en) 1999-05-28 2000-05-26 Wireless transceiver

Publications (2)

Publication Number Publication Date
GB0011950D0 true GB0011950D0 (en) 2000-07-05
GB2362523A true GB2362523A (en) 2001-11-21

Family

ID=26244295

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0011950A Withdrawn GB0011950D0 (en) 1999-05-28 2000-05-17 Wireless tranceivers

Country Status (2)

Country Link
DE (1) DE10026152C2 (en)
GB (1) GB0011950D0 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10221424B4 (en) * 2002-05-14 2005-12-15 Infineon Technologies Ag Transmitting and receiving arrangement with channel-oriented link
US6928104B2 (en) 2002-07-18 2005-08-09 Interdigital Technology Corporation Scaling using gain factors for use in data detection for wireless code division multiple access communication systems
US7010330B1 (en) 2003-03-01 2006-03-07 Theta Microelectronics, Inc. Power dissipation reduction in wireless transceivers
US7283851B2 (en) 2004-04-05 2007-10-16 Qualcomm Incorporated Power saving mode for receiver circuit blocks based on transmitter activity
WO2006069476A1 (en) * 2004-12-28 2006-07-06 Zte Corporation A harmonic suppression method for bs transceiver and rf front-end device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5815821A (en) * 1994-01-12 1998-09-29 Telefonaktiebolaget Lm Ericsson Method and a device for conserving power in a battery powered transceiver
CN1084114C (en) * 1995-01-31 2002-05-01 日本电气株式会社 Mobile radio unit with automatic gain control circuit and method for automatic gain control in said mobile radio unit
US5907798A (en) * 1996-06-21 1999-05-25 Lucent Technologies Inc. Wireless telephone intermodulation performance enhancement techniques
US5809400A (en) * 1996-06-21 1998-09-15 Lucent Technologies Inc. Intermodulation performance enhancement by dynamically controlling RF amplifier current
US6498926B1 (en) * 1997-12-09 2002-12-24 Qualcomm Incorporated Programmable linear receiver having a variable IIP3 point
US6311048B1 (en) * 1998-09-24 2001-10-30 Aravind Loke Intelligent control of receiver linearity based on interference

Also Published As

Publication number Publication date Type
DE10026152C2 (en) 2002-12-12 grant
GB2362523A (en) 2001-11-21 application
DE10026152A1 (en) 2001-02-15 application

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)