公开(公告)号：US20030034839A1

公开(公告)日：2003-02-20

申请号：US09931737

申请日：2001-08-20

Inventor： Peter John Poggi ,  Tim Dittmer ,  George Cabrera

IPC: H03G003/20

CPC classification number: H03G3/3042 ,  H03F1/0222 ,  H03F1/0233 ,  H03F1/0244 ,  H03F1/0277 ,  H03F3/211 ,  H03G3/004 ,  H03G2201/103 ,  H03G2201/504 ,  H03G2201/508 ,  H03G2201/702

Abstract: The variable power supply to an amplifier in an electrical circuit is dynamically controlled through the use of a lookup table responsive to one or more operating conditions of the electrical circuit. The lookup table is indexed by one or more of the operating conditions and the amount of amplification to be applied to an input signal to the amplifier is determined. One embodiment of the invention comprises a television transmitter circuit including a power amplifier circuit capable of amplifying a variable frequency COFDM or 8VSB input signal where the amount of amplification applied to the input signal is dynamically controlled through the use of a lookup table as a function of the frequency of the input signal.

Abstract translation: 通过使用响应于电路的一个或多个操作条件的查找表来动态地控制电路中的放大器的可变电源。 查找表由一个或多个操作条件索引，并确定要施加到放大器的输入信号的放大量。 本发明的一个实施例包括一种电视发射机电路，其包括能够放大可变频率COFDM或8VSB输入信号的功率放大器电路，其中通过使用查找表作为函数来动态地控制施加到输入信号的放大量 输入信号的频率。

公开(公告)号：EP1382171B1

公开(公告)日：2011-05-11

申请号：EP02715157.0

申请日：2002-03-18

Applicant: Skyworks Solutions, Inc.

Inventor： RAMACHANDRAN, Balasubramanian

IPC: H04L27/30 ,  H04L7/00 ,  H04B7/005 ,  H04B7/26

CPC classification number: H04W52/267 ,  H03G3/004 ,  H03G3/3042 ,  H03G2201/103 ,  H03G2201/307 ,  H03G2201/40 ,  H03G2201/508 ,  H04B1/109 ,  H04L1/0001 ,  H04W52/08 ,  H04W52/38

Abstract: A dynamically varying linearity system 'DVLS' (102) capable of varying the linearity of a radio frequency (RF) front-end (112) of a communication device (100) responsive to receiving a condition signal indicating a desired mode of operation of a transmitter (112). The DVLS may include a condition signal indicative of the desired mode of operation and a controller (110) that adjusts the linearity of the transmitter responsive to the condition signal. The condition signal may be responsive to a user interface (106). The controller, responsive to the condition signal, may dynamically adjust the operating current of the transmitter.

公开(公告)号：EP1428313A2

公开(公告)日：2004-06-16

申请号：EP02759314.4

申请日：2002-08-12

Applicant: HARRIS CORPORATION

Inventor： POGGI, Peter, John ,  DITTMER, Timothy ,  CABRERA, George

IPC: H03F3/04

CPC classification number: H03G3/3042 ,  H03F1/0222 ,  H03F1/0233 ,  H03F1/0244 ,  H03F1/0277 ,  H03F3/211 ,  H03G3/004 ,  H03G2201/103 ,  H03G2201/504 ,  H03G2201/508 ,  H03G2201/702

Abstract: The variable power supply (12) to an amplifier (10) in an electrical circuit is dynamically controlled through the use of a lookup table (14) responsive to one or more operating conditions of the electrical circuit. The lookup table is indexed by one or more of the operating conditions and the amount of amplification to be applied to an input signal to the amplifier is determined. One embodiment of the invention comprises a television transmitter circuit including a power amplifier circuit capable of amplifying a variable frequency COFDM or 8VSB input signal (11) where the amount of amplification applied to the input signal is dynamically controlled through the use of a lookup table as a function of the frequency of the input signal.

公开(公告)号：EP1568192A4

公开(公告)日：2006-08-23

申请号：EP03783365

申请日：2003-11-14

Applicant: INTERDIGITAL TECH CORP

Inventor： OZLUTURK FATIH ,  KAZAKEVICH LEONID ,  HAQUE TANBIR ,  DEMIR ALPASLAN ,  NARAYAN GEETHA LAKSHMI ,  KEARNEY KENNETH

IPC: H03D3/00 ,  H03C3/40 ,  H03G3/00 ,  H03G3/30 ,  H04B1/30 ,  H04L27/00

CPC classification number: H03G3/001 ,  H03D3/008 ,  H03D3/009 ,  H03G3/3068 ,  H03G3/3089 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/302 ,  H03G2201/307 ,  H03G2201/508 ,  H04B1/30 ,  H04L2027/0016 ,  H04L2027/0024

Abstract: In order to compensate for performance degradation caused by inferior low-cost analog radio component (105) tolerances of an analog radio (100), a future system architecture (FSA) wireless communication transceiver employs numerous digital signal processing techniques to compensate for deficiencies of such analog components so that modern specifications may be relaxed. Automatic gain control (110) functions are provided in the digital domain, so as to provide enhanced phase and amplitude compensation, as well as many other radio frequency parameters.

公开(公告)号：EP1382171A1

公开(公告)日：2004-01-21

申请号：EP02715157.0

申请日：2002-03-18

Applicant: Skyworks Solutions, Inc.

Inventor： RAMACHANDRAN, Balasubramanian

IPC: H04L27/30 ,  H04L7/00 ,  H04B7/005 ,  H04B7/26

CPC classification number: H04W52/267 ,  H03G3/004 ,  H03G3/3042 ,  H03G2201/103 ,  H03G2201/307 ,  H03G2201/40 ,  H03G2201/508 ,  H04B1/109 ,  H04L1/0001 ,  H04W52/08 ,  H04W52/38

Abstract: A dynamically varying linearity system 'DVLS' (102) capable of varying the linearity of a radio frequency (RF) front-end (112) of a communication device (100) responsive to receiving a condition signal indicating a desired mode of operation of a transmitter (112). The DVLS may include a condition signal indicative of the desired mode of operation and a controller (110) that adjusts the linearity of the transmitter responsive to the condition signal. The condition signal may be responsive to a user interface (106). The controller, responsive to the condition signal, may dynamically adjust the operating current of the transmitter.

公开(公告)号：EP1428313B1

公开(公告)日：2010-07-14

申请号：EP02759314.4

申请日：2002-08-12

Applicant: HARRIS CORPORATION

Inventor： POGGI, Peter, John ,  DITTMER, Timothy ,  CABRERA, George

IPC: H03F3/04

CPC classification number: H03G3/3042 ,  H03F1/0222 ,  H03F1/0233 ,  H03F1/0244 ,  H03F1/0277 ,  H03F3/211 ,  H03G3/004 ,  H03G2201/103 ,  H03G2201/504 ,  H03G2201/508 ,  H03G2201/702

Abstract: The variable power supply (12) to an amplifier (10) in an electrical circuit is dynamically controlled through the use of a lookup table (14) responsive to one or more operating conditions of the electrical circuit. The lookup table is indexed by one or more of the operating conditions and the amount of amplification to be applied to an input signal to the amplifier is determined. One embodiment of the invention comprises a television transmitter circuit including a power amplifier circuit capable of amplifying a variable frequency COFDM or 8VSB input signal (11) where the amount of amplification applied to the input signal is dynamically controlled through the use of a lookup table as a function of the frequency of the input signal.

公开(公告)号：EP1568192B1

公开(公告)日：2009-04-15

申请号：EP03783365.4

申请日：2003-11-14

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： OZLUTURK, Fatih ,  KAZAKEVICH, Leonid ,  HAQUE, Tanbir ,  DEMIR, Alpaslan ,  NARAYAN, Geetha, Lakshmi ,  KEARNEY, Kenneth

IPC: H03D3/00 ,  H03C3/40 ,  H03G3/00

CPC classification number: H03G3/001 ,  H03D3/008 ,  H03D3/009 ,  H03G3/3068 ,  H03G3/3089 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/302 ,  H03G2201/307 ,  H03G2201/508 ,  H04B1/30 ,  H04L2027/0016 ,  H04L2027/0024

Abstract: In order to compensate for performance degradation caused by inferior low-cost analog radio component (105) tolerances of an analog radio (100), a future system architecture (FSA) wireless communication transceiver employs numerous digital signal processing techniques to compensate for deficiencies of such analog components so that modern specifications may be relaxed. Automatic gain control (110) functions are provided in the digital domain, so as to provide enhanced phase and amplitude compensation, as well as many other radio frequency parameters.

公开(公告)号：JP2009525007A

公开(公告)日：2009-07-02

申请号：JP2008552600

申请日：2007-01-26

Applicant: クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： アトキンソン、ケビン ,  グダ、スリニバス ,  ブタラ、アミット

IPC: H03G3/02 ,  H03G3/10 ,  H04B1/04

CPC classification number: H03G3/3042 ,  H03G2201/508 ,  H04W52/146 ,  H04W52/367

Abstract: 区分的非線形および／または非単調回路により線形単調出力電力を達成する技法が記載される。 非線形および／または非単調特性を有する第１の回路用に粗利得が選択される。 粗利得による出力電力誤差を補償するために使用される第２の回路用に微利得が選択される。 第１および第２の参照表は第１および第２の回路用の出力電力対利得をそれぞれ記憶し得る。 第１の参照表内の出力電力は要求された出力電力に基づいて選択され、選択された出力電力に対応する利得が粗利得として供給され得る。 第２の参照表内の出力電力は出力電力誤差に基づいて選択され、選択された出力電力に対応する利得が第２の利得として供給され得る。

公开(公告)号：KR20210025128A

公开(公告)日：2021-03-08

申请号：KR1020217005336A

申请日：2019-07-24

Applicant: 시러스 로직 인터내셔널 세미컨덕터 리미티드

Inventor： 레이 주 ,  테자스비 다스 ,  존 엘. 멜란슨 ,  와이-션 윌슨 슘 ,  징 베이 ,  신 자오 ,  샤오판 페이

IPC: H03F3/217 ,  H03F3/181 ,  H03F3/387 ,  H03G3/30

CPC classification number: H03F3/217 ,  H03G3/301 ,  H03F3/181 ,  H03F3/187 ,  H03F3/2175 ,  H03F3/387 ,  H03G3/3005 ,  H03G3/3089 ,  H03F2200/03 ,  H03F2200/351 ,  H03F2200/471 ,  H03G2201/508

Abstract: 시스템은 디지털 변조기의 입력에서 수신된 입력 신호를 변조하여 상기 디지털 변조기의 출력에서 변조된 입력 신호를 생성하도록 구성된 디지털 변조기, 디지털 이득을 가지며 상기 디지털 변조기에 결합되는 디지털 이득 요소, 상기 디지털 변조기의 출력에 결합되고 상기 변조된 입력 신호를 증폭하도록 구성된 개방-루프 클래스-D 증폭기로서, 상기 입력 신호의 하나 이상의 특성들에 따라 가변적인 가변 공급 전압을 갖는 가변 전원 공급 장치로부터 전원이 공급되는, 상기 개방-루프 클래스-D 증폭기, 및 상기 입력 신호의 하나 이상의 특성들에 따른 가변 공급 전압의 변동으로 인한 상기 개방-루프 클래스-D 증폭기의 아날로그 이득에서의 변화들을 대략적으로 삭제하기 위해 상기 디지털 이득을 제어하도록 구성된 제어 회로를 포함할 수 있다.

公开(公告)号：WO2004047411A1

公开(公告)日：2004-06-03

申请号：PCT/US2003/036129

申请日：2003-11-14

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： OZLUTURK, Fatih ,  KAZAKEVICH, Leonid ,  HAQUE, Tanbir ,  DEMIR, Alpaslan ,  NARAYAN, Geetha, Lakshmi ,  KEARNEY, Kenneth

IPC: H04M1/00

CPC classification number: H03G3/001 ,  H03D3/008 ,  H03D3/009 ,  H03G3/3068 ,  H03G3/3089 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/302 ,  H03G2201/307 ,  H03G2201/508 ,  H04B1/30 ,  H04L2027/0016 ,  H04L2027/0024

Abstract: In order to compensate for performance degradation caused by inferior low-cost analog radio component (105) tolerances of an analog radio (100), a future system architecture (FSA) wireless communication transceiver employs numerous digital signal processing techniques to compensate for deficiencies of such analog components so that modern specifications may be relaxed. Automatic gain control (110) functions are provided in the digital domain, so as to provide enhanced phase and amplitude compensation, as well as many other radio frequency parameters.

Abstract translation: 为了补偿由模拟无线电（100）的低成本模拟无线电组件（105）容差导致的性能下降，未来的系统架构（FSA）无线通信收发机采用多种数字信号处理技术来补偿这样的缺陷 模拟组件，使现代规格可以放松。 在数字域中提供自动增益控制（110）功能，以提供增强的相位和幅度补偿以及许多其他射频参数。