基本信息:
- 专利标题: A SYSTEM AND METHOD FOR MINIMIZING DISSIPATION IN RF POWER AMPLIFIERS
- 专利标题(中):一种最小化射频功率放大器中的耗散的系统和方法
- 申请号:PCT/US2002/025349 申请日:2002-08-12
- 公开(公告)号:WO2003017468A2 公开(公告)日:2003-02-27
- 发明人: POGGI, Peter, John , DITTMER, Timothy , CABRERA, George
- 申请人: HARRIS CORPORATION
- 申请人地址: 1025 W. Nasa Blvd., Melbourne, FL 32919 US
- 专利权人: HARRIS CORPORATION
- 当前专利权人: HARRIS CORPORATION
- 当前专利权人地址: 1025 W. Nasa Blvd., Melbourne, FL 32919 US
- 代理机构: YATSKO, Michael, S.
- 优先权: US09/931,737 20010820
- 主分类号: H03F
- IPC分类号: H03F
摘要:
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.
摘要(中):
响应于电路的一个或多个操作条件,通过使用查找表来动态控制到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,并确定要应用于放大器的输入信号的放大量。 本发明的一个实施例包括电视发射机电路,该电视发射机电路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来动态控制施加到输入信号的放大量,作为 输入信号的频率。 p>