Tag Archives: amplifier

Asending sampling filter with one bit amplifier for multiple expansion data stream

Application Number  00129095 Application Date  2000.09.29 Publication Number  1291019 Publication Date  2001.04.11 Priority Information   1999/10/1 US 09/411,152   International Classification  H04B1/02;H04J13/00   Applicant(s) Name  Lucent Technologies Co.   Address     Inventor(s) Name  Lamin Kehoyeny-Pulfad;Lisandle B. Leem;Malkom Hullood Smith   Patent Agency Code  11038 Patent Agent  jiang shixun AbstractA transmit portion of a WB-CDMA… Read More »

Terminal designs of wavelength-division multiplexing system with online semiconductor optical amplifier

Application Number  00128824 Application Date  2000.09.22 Publication Number  1290083 Publication Date  2001.04.04 Priority Information   1999/9/24 US 09/405,679   International Classification  H04J14/02   Applicant(s) Name  Lucent Technologies Inc.   Address     Inventor(s) Name  S. Benagi;Sun Yan;B.R. Itchenbom   Patent Agency Code  11038 Patent Agent  jiang shixun AbstractSemi-conductor amplifiers may be used in an optical… Read More »

Integrated free plate automatic calibration of low distortion amplifier

Application Number: 00118113Application Date: 2000.06.07Publication Number: 1283894Publication Date: 2001.02.14Priority Information: 1999/6/8 US 09/327,538International: H03F1/00;H03F3/19Applicant(s) Name: Lucent Tech Inc.Address: Inventor(s) Name: Schlomer;Hoffman;GeorgePatent Agency Code: 11038Patent Agent: jiang shixunAbstract A low distortion amplifier with an optimization circuit that performs an automated alignment of the amplifier is provided. The optimization circuit includes an extraction circuit designed to extract… Read More »

Quick gain control of light amplifier

Application Number: 00124286Application Date: 2000.08.23Publication Number: 1286413Publication Date: 2001.03.07Priority Information: 1999/8/25 US 09/382,853International: G02F1/39Applicant(s) Name: Lucent Technologies Inc.Address: Inventor(s) Name: M.R. Folner;G.H. Hanzic;P. TezeimanPatent Agency Code: 11038Patent Agent: jiang shixunAbstract In an optically amplified wavelength division multiplexed (WDM) system having a WDM signal comprising a plurality of optical channels, the per-channel gain of the optical… Read More »

Feedforward amplifier

Application Number: 00118298Application Date: 2000.03.31Publication Number: 1273455Publication Date: 2000.11.15Priority Information: 1999/3/31 JP 092355/99; 1999/6/10 JP 163314/99International: H03F1/32Applicant(s) Name: NTT Mobile Communication Network Inc.Address: Inventor(s) Name: Suzuki Kyoyoroshi;Noshima ToshioPatent Agency Code: 11105Patent Agent: ma yingAbstract In a distortion injection path (15) wherein a detected distortion component of a main amplifier (23) becomes amplified, distortion by an… Read More »

Broad-band low-noise efficient impedance-transforming amplifier with isolated background DC.

Application Number: 00124705Application Date: 2000.09.13Publication Number: 1342906Publication Date: 2002.04.03Priority Information: International: G01R15/00;G01R15/14Applicant(s) Name: Telecommunication Inst, Chinese Telecommunication Co LtdAddress: Inventor(s) Name: Chen Cilang;Lu Guangqin;Xu ChengyouPatent Agency Code: 11021Patent Agent: tang baobengAbstract An impedance-transforming amplifier is composed of a singal current input buffer consisting of two FETs and one resistor, a resistor-analogous circuit consisting of one… Read More »

Apparatus and method for stabilizing output power for fibre amplifier according to quantity of channel

Application Number: 00118698Application Date: 2000.06.20Publication Number: 1284802Publication Date: 2001.02.21Priority Information: 1999/6/24 KR 24003/99International: H04B10/02;H04B10/12;H04J14/02Applicant(s) Name: Samsung Electronics Co., Ltd.Address: Inventor(s) Name: Chong Rae-Seung;Yun Soo-Yong;Whang Song-TaekPatent Agency Code: 72001Patent Agent: liang yongAbstract An apparatus and method stabilises the output power of a WDM optical fibre amplifier according to the number of data channels. The output stabilising… Read More »

Multi-beam wave-synthesis ware-partitioning apparatus for cladded pumping optical fiber amplifier and laser

Application Number: 00125366Application Date: 2000.09.22Publication Number: 1285663Publication Date: 2001.02.28Priority Information: International: H04B10/02;H04B10/12Applicant(s) Name: Shanghai Inst. of Optics and Fine Machinery, Chinese Academy of SciencesAddress: Inventor(s) Name: Fang Zujie;Chen Gaoting;Cai HaiwenPatent Agency Code: 31002Patent Agent: li lanyangAbstract The present invention relates to a multi-beam composite wave wave-separator for cladded pumping optic fibre amplifier and laser, and… Read More »

Long band fibre optic amplifier using seed light beam

Application Number: 00118701Application Date: 2000.06.20Publication Number: 1284658Publication Date: 2001.02.21Priority Information: 1999/6/23 KR 23777/99International: G02F1/39Applicant(s) Name: Samsung Eleectronics Co., Ltd.Address: Inventor(s) Name: Whang Song-Tack;Yun Soo-Yong;Chong Rae-SeungPatent Agency Code: 72001Patent Agent: liang yongAbstract A L-band optical fibre amplifier is provided. The L-band optical fibre amplifier includes an optical fibre doped with a rare-earth element. There is at… Read More »

Power amplifier without cross-over distortion

Application Number: 00125963Application Date: 2000.09.09Publication Number: 1343039Publication Date: 2002.04.03Priority Information: International: H03F1/32;H03F3/21Applicant(s) Name: Wang ZhongjiAddress: Inventor(s) Name: Wang ZhongjiPatent Agency Code: 00000Patent Agent: Abstract A power amplifier without cross-over distortion is composed of constant voltage circuit, cross-over distortion eliminating circuit and three-stage Darlington push-pull circuit. It is mainly used as audio power amplifier of for… Read More »

Temperature-controlling optical pulse parametric amplifier

Application Number: 00119555Application Date: 2000.08.03Publication Number: 1278608Publication Date: 2001.01.03Priority Information: International: G02F1/39Applicant(s) Name: Shanghai Inst. of Optics & Fine Machines, Chinese Academy of SciencesAddress: Inventor(s) Name: Jin Shiqi;Xu Zhizhan (CN )Patent Agency Code: 31002Patent Agent: li lanyangAbstract The temp.-controlled optical pules parametric amplifier equipment includes amplification element being in refrigeration cavity of temp, controller, and… Read More »

Dynamicaly synchronous voltage-biased power amplifier

Application Number: 00126515Application Date: 2000.09.09Publication Number: 1343040Publication Date: 2002.04.03Priority Information: International: H03F1/32;H03F3/21Applicant(s) Name: Wang ZhongjiAddress: Inventor(s) Name: Wang ZhongjiPatent Agency Code: 00000Patent Agent: Abstract A dynamically and synchronously voltage-biased power amplifier for eliminating cross-over distortion is composed of constant voltage circuit, dynamic and synchronous voltage bias circuit and three-stage Darlington push-pull circuit. It can be… Read More »

Method for linear power amplifier on wide frequency band

Application Number: 00119924Application Date: 2000.06.30Publication Number: 1291000Publication Date: 2001.04.11Priority Information: 1999/6/30 EP 99401627.7International: H03F1/32Applicant(s) Name: Alcatel Co.Address: Inventor(s) Name: Luca DatsPatent Agency Code: 11038Patent Agent: ma gaoAbstract A method for the linearization of a wide frequency band power amplifier. The frequency band of operation of the amplifier is divided into at least two groups or… Read More »

Power amplifier for mobile telephone set

Application Number: 00126890Application Date: 2000.08.31Publication Number: 1287407Publication Date: 2001.03.14Priority Information: 1999/8/31 JP 246435/99International: H03G3/30;H03G3/00Applicant(s) Name: Samsung Electronics Co., Ltd.Address: Inventor(s) Name: Haruyama ShinichiPatent Agency Code: 72001Patent Agent: li efeiAbstract A power amplifying apparatus for a mobile phone is provided. In the power amplifying apparatus, a power amplifier uses a transistor as a power amplifying device,… Read More »

High-gain and no-self excitation antenna amplifier

Application Number: 00120913Application Date: 2000.08.01Publication Number: 1336724Publication Date: 2002.02.20Priority Information: International: H03F3/19;H03F3/68Applicant(s) Name: Zhao JieAddress: Inventor(s) Name: Zhao JiePatent Agency Code: 00000Patent Agent: Abstract A gain-adjustable rear-end amplifier is fit in power source box of common antenna amplifier to increase gain further and to overcome the defect that common antenna amplifier is easy to generate… Read More »

Method and device for automatically selecting signal source of audio and video amplifier

Application Number: 00114109Application Date: 2000.03.13Publication Number: 1270449Publication Date: 2000.10.18Priority Information: International: H03K17/00;H04Q11/00Applicant(s) Name: Ailang Digital Technology Co., Ltd., Guangdong Prov.Address: Inventor(s) Name: Yang Lian;Liu YongPatent Agency Code: 00000Patent Agent: Abstract An automatic selector of signal source for AV amplifier is composed, of more signal sources, the first and the second switches, A/D converter and CPU.… Read More »

Load envelope following amplifier system

Application Number: 00121348Application Date: 2000.07.21Publication Number: 1282140Publication Date: 2001.01.31Priority Information: 1999/7/22 US 09/359586International: H03F1/32;H04B1/40;H04B1/62Applicant(s) Name: Motorola Inc.Address: Inventor(s) Name: William P. Albers Jr.;Aming Clomsdolf;Luck WenkllmanPatent Agency Code: 11219Patent Agent: yu mangAbstract A load envelope following (LEF) amplifier system to increase the efficiency of amplification systems that employ linear modulation schemes. The LEF system has a… Read More »

Amplifier for audio/video device

Application Number: 00114167Application Date: 2000.03.31Publication Number: 1315781Publication Date: 2001.10.03Priority Information: International: H03F1/32;H03F1/56Applicant(s) Name: Chen ZhiweiAddress: Inventor(s) Name: Chen ZhiweiPatent Agency Code: 44100Patent Agent: liu xiaoxueAbstract An amplifier for audio and video equipment features that in a common-emitter amplifier composed of a triode G, two capacitors C1 and C2, a resistor R1 and a load resistor… Read More »

Amplifier load regulating system based on memory

Application Number: 00121350Application Date: 2000.07.21Publication Number: 1282139Publication Date: 2001.01.31Priority Information: 1999/7/22 US 09/358674International: H03F1/02;H03G3/20;H04B1/40Applicant(s) Name: Motorola Inc.Address: Inventor(s) Name: Aming Clomsdolf;Luck Edward Wenkllman;Michael LandhairPatent Agency Code: 11219Patent Agent: yu mangAbstract A power amplifier load adjust system includes a power amplifier and a variable impedance network coupled to the output of the power amplifier. The variable… Read More »

High-fidelity final-stage power current amplifier

Application Number: 00115994Application Date: 2000.09.01Publication Number: 1299187Publication Date: 2001.06.13Priority Information: 1999/12/8 CN 99120106.XInternational: H03F3/68;H04R5/04Applicant(s) Name: Wu GangAddress: Inventor(s) Name: Wu GangPatent Agency Code: 42102Patent Agent: zhu biwuAbstract It consists of current amplifying circuit and power source. The characteristics are: there is an input signal switching circuit on front end of the current amplifying circuit and… Read More »

Load controlled amplitude envelope amplifier system

Application Number: 00121353Application Date: 2000.07.21Publication Number: 1282141Publication Date: 2001.01.31Priority Information: 1999/7/22 US 09/359280International: H03F1/32;H04B1/40;H04B1/62Applicant(s) Name: Motoroal Inc.Address: Inventor(s) Name: William P. Albers Jr.;Aming Clomsdolf;Luck WenkllmanPatent Agency Code: 11219Patent Agent: yu mangAbstract An amplifier system to increase the efficiency of amplification systems that employ linear modulation schemes. The amplifier system has a signal amplifier for receiving… Read More »

Light amplifier

Application Number: 00117978Application Date: 2000.06.06Publication Number: 1292506Publication Date: 2001.04.25Priority Information: 1999/6/30 US 09/345,063International: G02F1/39Applicant(s) Name: Northern Network Ltd.Address: Inventor(s) Name: Kevin P. Jones;Roger M. Jibb;Robert A. BeckPatent Agency Code: 11038Patent Agent: jiang shixunAbstract In a WDM optical transmission system employing optical amplifiers in its transmission path, a supervisory signal channel, used for monitoring and controlling… Read More »

Feedforward linear powder amplifier circuit and the method of counteracting AC modulation signal in carrier signal directly

Application Number: 00121394Application Date: 2000.07.27Publication Number: 1336719Publication Date: 2002.02.20Priority Information: International: H03F1/00;H03F1/32Applicant(s) Name: Huawei Techn. Co., Ltd.Address: Inventor(s) Name: Yin Weimin;Jiao LiuyanPatent Agency Code: 00000Patent Agent: Abstract A feedforward linear power amplifying circuit consists of intermodulation signal collecting unit and intermodulation signal cancelling unit, in which, the circuit of the invention comprises the unit of… Read More »

Radio-frequency amplifier with gain control

Application Number: 00108592Application Date: 2000.05.18Publication Number: 1274991Publication Date: 2000.11.29Priority Information: 1999/5/25 US 09/318,145International: H03F1/34;H03G3/20Applicant(s) Name: International Business Machine Corp.Address: Inventor(s) Name: Holley A. Rafferay;Nasaneel KimPatent Agency Code: 11038Patent Agent: wang yonggangAbstract A RF integrated circuit including an amplifier having an input node and an output node; a switchable feedback path coupled between the output node… Read More »

Isolating high-frequency tuned amplifier

Application Number: 00107441Application Date: 2000.05.15Publication Number: 1274988Publication Date: 2000.11.29Priority Information: 1999/5/21 JP 142070/99International: H03F1/44Applicant(s) Name: ALPS Electric Co., Ltd.Address: Inventor(s) Name: Nakano Kazuhaku;Nomi KokiPatent Agency Code: 11216Patent Agent: liu jiyangAbstract The high frequency tuning amplifier for buffer has a tuning circuit consisting of a serial circuit of the first and second inductors connected between the… Read More »

Integrated memory arranged with reading amplifier on opposite sides of cell area

Application Number: 00107085Application Date: 2000.04.28Publication Number: 1271944Publication Date: 2000.11.01Priority Information: 1999/4/28 DE 19919359.2International: G11C7/06;G11C7/18Applicant(s) Name: Infineon Technology AGAddress: Inventor(s) Name: Z. Manjoky;T. lell;T. BemPatent Agency Code: 72001Patent Agent: cheng tianzhengAbstract An integrated memory has a first switch-element (A), through which each bit-line (BLi, bBLi) is connected with the related read-amplifier (SA); a second switch-element (B),… Read More »

Ultrashort-pulse chirp photoparametric laser amplifier

Application Number: 00105432Application Date: 2000.03.28Publication Number: 1315671Publication Date: 2001.10.03Priority Information: International: G02F1/39Applicant(s) Name: Inst of Physics, Chinese Academy of SciencesAddress: Inventor(s) Name: Xu Zuyan;Xu Yao;Chen YuchuanPatent Agency Code: 00000Patent Agent: Abstract An ultrashort-pulse chirp photoparametric laser amplifier is composed of hollow cylindrical lens or semi-cylindrical lens, non-linear laser crystal, pump light source and chirp optical… Read More »

Electronic apparatus with power amplifier

Application Number: 00104790Application Date: 2000.03.25Publication Number: 1269635Publication Date: 2000.10.11Priority Information: 1999/3/30 FR 99/03971International: H03F1/00;H03G3/30Applicant(s) Name: Koninklijke Philips Electronics Co., Ltd.Address: Inventor(s) Name: J. A. CharbassPatent Agency Code: 72001Patent Agent: ye kaidongAbstract This apparatus comprises an amplifier (30) which operates in class D. For controlling its output power, a variable power supply (35) is influenced by… Read More »

Single-stage power amplifier

Application Number: 00103287Application Date: 2000.03.23Publication Number: 1263380Publication Date: 2000.08.16Priority Information: International: H03F3/21Applicant(s) Name: Wang ShixiangAddress: Inventor(s) Name: Wang ShixiangPatent Agency Code: 00000Patent Agent: Abstract The single-stage power amplifier, belonging to an analogue audio frequency power amplifier, mainly is used in field of high-fidelity sounder technology, in particular is suitable for making power amplification of output… Read More »

Receiver with internal low-noise high-frequency amplifier

Application Number: 00102855Application Date: 2000.03.03Publication Number: 1268000Publication Date: 2000.09.27Priority Information: 1999/3/4 KR 7146/1999; 2000/2/25 KR 9365/2000International: H04N5/44Applicant(s) Name: LG Electronics Inc.Address: Inventor(s) Name: Choe Saegwan;Park ChangkonPatent Agency Code: 11219Patent Agent: yu mangAbstract A receiver with built-in low-noise high-frequency amplifier, includes: a high-pass filter, for carry out a high-pass filtering to the high-frequency signal; an antistatic… Read More »