CA2097729A1 - Power control device wherein a bias voltage in level detection is given a constant difference from a detected voltage - Google Patents

Power control device wherein a bias voltage in level detection is given a constant difference from a detected voltage

Info

Publication number
CA2097729A1
CA2097729A1 CA2097729A CA2097729A CA2097729A1 CA 2097729 A1 CA2097729 A1 CA 2097729A1 CA 2097729 A CA2097729 A CA 2097729A CA 2097729 A CA2097729 A CA 2097729A CA 2097729 A1 CA2097729 A1 CA 2097729A1
Authority
CA
Canada
Prior art keywords
output signal
voltage
bias voltage
detected
bias
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.)
Granted
Application number
CA2097729A
Other languages
French (fr)
Other versions
CA2097729C (en
Inventor
Hiroyuki Inokuchi
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.)
Japan Radio Co Ltd
Original Assignee
Hiroyuki Inokuchi
Japan Radio Co., 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 Hiroyuki Inokuchi, Japan Radio Co., Ltd. filed Critical Hiroyuki Inokuchi
Publication of CA2097729A1 publication Critical patent/CA2097729A1/en
Application granted granted Critical
Publication of CA2097729C publication Critical patent/CA2097729C/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
    • H04W52/52—TPC using AGC [Automatic Gain Control] circuits or amplifiers

Abstract

In a level detector (17), a bias voltage is developed by a bias current to have a substantially constant difference irrespective of a temperature variation from a detected voltage produced by detecting a device output signal for use in TDM modulation. A control signal generator (19) calculates a substantially temperature independent difference digital value by subtracting from a first digital value of the detected voltage and a second digital value of the bias voltage to produce an attenuation control analog level used in controlling a variable attenuator (11) which deals with a device input signal to produce an attenuator output signal with a desired value for use as the device output signal. Preferably, the detected and the bias voltages are amplified by a variable gain amplifier (35) controlled by a processor output signal.
CA002097729A 1992-06-05 1993-06-04 Power control device wherein a bias voltage in level detection is given a constant difference from a detected voltage Expired - Fee Related CA2097729C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP145301/1992 1992-06-05
JP14530192 1992-06-05

Publications (2)

Publication Number Publication Date
CA2097729A1 true CA2097729A1 (en) 1993-12-06
CA2097729C CA2097729C (en) 1998-10-20

Family

ID=15381986

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002097729A Expired - Fee Related CA2097729C (en) 1992-06-05 1993-06-04 Power control device wherein a bias voltage in level detection is given a constant difference from a detected voltage

Country Status (5)

Country Link
US (1) US5383223A (en)
EP (1) EP0573073B1 (en)
AU (1) AU658299B2 (en)
CA (1) CA2097729C (en)
DE (1) DE69323794T2 (en)

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JPH05343938A (en) * 1992-06-05 1993-12-24 Japan Radio Co Ltd Powr controller in digital modulation demodulation system
DE4316526B4 (en) * 1993-05-18 2005-11-10 Philips Intellectual Property & Standards Gmbh Transmitter with a controllable power amplifier
DE4339526A1 (en) * 1993-11-19 1995-05-24 Philips Patentverwaltung Radio with transmission power control
JP3223750B2 (en) * 1995-03-31 2001-10-29 株式会社日立製作所 Power control power amplifier, wireless communication terminal and wireless communication base station
US7017208B2 (en) * 1995-08-04 2006-03-28 Hill-Rom Services, Inc. Hospital bed
US5708681A (en) * 1996-04-23 1998-01-13 Bell Communications Research, Inc. Hybrid analog/digital method and apparatus for controlling the transmission power level of a radio transceiver
US5854972A (en) * 1996-05-16 1998-12-29 Motorola, Inc. Circuit for adjusting transmit power
US5809400A (en) * 1996-06-21 1998-09-15 Lucent Technologies Inc. Intermodulation performance enhancement by dynamically controlling RF amplifier current
US5869986A (en) * 1997-06-13 1999-02-09 Maxim Integrated Products, Inc. Power level sense circuit
US5996100A (en) * 1997-12-22 1999-11-30 Hewlett-Packard Company System and method for the injection and cancellation of a bias voltage in an attenuated circuit
US6223056B1 (en) * 1997-12-31 2001-04-24 Samsung Electronics Co., Ltd. Systems and methods for dynamically controlling a variable power amplifier
JPH11312988A (en) * 1998-04-30 1999-11-09 Nec Corp Method and device for transmitting micro wave and millimeter wave
US8177762B2 (en) 1998-12-07 2012-05-15 C. R. Bard, Inc. Septum including at least one identifiable feature, access ports including same, and related methods
JP3570537B2 (en) * 1998-12-10 2004-09-29 アルプス電気株式会社 Digital television signal receiving tuner
JP3991543B2 (en) 2000-01-11 2007-10-17 株式会社日立製作所 Imaging device
US7184724B1 (en) * 2000-04-18 2007-02-27 Microtune (Texas), L.P. System and method for frequency translation using an image reject mixer
JP5484674B2 (en) 2005-03-04 2014-05-07 シー・アール・バード・インコーポレーテッド Access port and identification method
US8029482B2 (en) 2005-03-04 2011-10-04 C. R. Bard, Inc. Systems and methods for radiographically identifying an access port
US7947022B2 (en) 2005-03-04 2011-05-24 C. R. Bard, Inc. Access port identification systems and methods
US9474888B2 (en) 2005-03-04 2016-10-25 C. R. Bard, Inc. Implantable access port including a sandwiched radiopaque insert
US10307581B2 (en) 2005-04-27 2019-06-04 C. R. Bard, Inc. Reinforced septum for an implantable medical device
US8147455B2 (en) 2005-04-27 2012-04-03 C. R. Bard, Inc. Infusion apparatuses and methods of use
WO2006116438A2 (en) 2005-04-27 2006-11-02 C.R. Bard, Inc. Infusion apparatuses and related methods
JP2008011482A (en) * 2006-05-29 2008-01-17 Alps Electric Co Ltd High-frequency circuit
US8219045B2 (en) * 2006-06-27 2012-07-10 Motorola Soultions, Inc. Method and system for controlling transmitter power using variable feedback transmitter parameters
US9642986B2 (en) 2006-11-08 2017-05-09 C. R. Bard, Inc. Resource information key for an insertable medical device
US9265912B2 (en) 2006-11-08 2016-02-23 C. R. Bard, Inc. Indicia informative of characteristics of insertable medical devices
US7697903B2 (en) * 2006-12-06 2010-04-13 Broadcom Corporation Method and system for level detector calibration for accurate transmit power control
US9579496B2 (en) 2007-11-07 2017-02-28 C. R. Bard, Inc. Radiopaque and septum-based indicators for a multi-lumen implantable port
BRPI0919890B8 (en) 2008-10-31 2019-09-24 Bard Inc C R access port to provide subcutaneous access to a patient, and force injectable access port
US11890443B2 (en) 2008-11-13 2024-02-06 C. R. Bard, Inc. Implantable medical devices including septum-based indicators
US8932271B2 (en) 2008-11-13 2015-01-13 C. R. Bard, Inc. Implantable medical devices including septum-based indicators
EP2451512A1 (en) 2009-07-07 2012-05-16 C.R. Bard Inc. Extensible internal bolster for a medical device
WO2011062750A1 (en) 2009-11-17 2011-05-26 C. R. Bard, Inc. Overmolded access port including anchoring and identification features
USD682416S1 (en) 2010-12-30 2013-05-14 C. R. Bard, Inc. Implantable access port
USD676955S1 (en) 2010-12-30 2013-02-26 C. R. Bard, Inc. Implantable access port
CN103345281B (en) * 2013-06-27 2015-11-25 江苏亨通光网科技有限公司 Temperature control device of high reliable wavelength division array optical waveguide

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Publication number Priority date Publication date Assignee Title
US4553104A (en) * 1984-03-01 1985-11-12 Honeywell Inc. Method of compensating an amplifier system having a variable gain amplifier to achieve a constant overall system signal gain and an apparatus utilizing the same
US4602218A (en) * 1985-04-30 1986-07-22 Motorola, Inc. Automatic output control circuitry for RF power amplifiers with wide dynamic range
US4952886A (en) * 1988-06-17 1990-08-28 Novatel Communications Ltd. RF power-control circuit
JPH02285817A (en) * 1989-04-27 1990-11-26 Nec Corp Radio transmitter
US5113525A (en) * 1989-11-06 1992-05-12 Mitsubishi Denki Kabushiki Kaisha Linear-modulation type radio transmitter
FI85202C (en) * 1990-03-09 1992-03-10 Nokia Mobile Phones Ltd FOERFARANDE FOER FOERBAETTRANDE AV PRECISION I EFFEKTREGLERING I EN RADIOTELEFON.
CA2044672C (en) * 1990-06-16 1994-10-04 Hidehiko Norimatsu Burst control circuit for use in tdma communications system
US5214393A (en) * 1990-08-20 1993-05-25 Matsushita Electric Industrial Co., Ltd. Transmission output control circuit
KR960000775B1 (en) * 1990-10-19 1996-01-12 닛본덴기 가부시끼가이샤 Output level control circuit for high freq power amp
JPH04157927A (en) * 1990-10-22 1992-05-29 Nec Corp Transmitter
US5287555A (en) * 1991-07-22 1994-02-15 Motorola, Inc. Power control circuitry for a TDMA radio frequency transmitter
JPH05343938A (en) * 1992-06-05 1993-12-24 Japan Radio Co Ltd Powr controller in digital modulation demodulation system

Also Published As

Publication number Publication date
DE69323794T2 (en) 1999-09-09
AU4007893A (en) 1993-12-09
EP0573073A2 (en) 1993-12-08
EP0573073B1 (en) 1999-03-10
DE69323794D1 (en) 1999-04-15
EP0573073A3 (en) 1994-02-23
US5383223A (en) 1995-01-17
CA2097729C (en) 1998-10-20
AU658299B2 (en) 1995-04-06

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed