专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO1993026086A1 COMPENSATING FOR NON-LINEAR EFFECTS IN SIGNAL PROCESSING WITH ACTIVE DEVICES 审中-公开
标题翻译：对使用活动设备进行信号处理的非线性效应进行补偿
公开(公告)号：WO1993026086A1
公开(公告)日：1993-12-23
申请号：PCT/GB1993001106
申请日：1993-05-27
申请人： BRITISH BROADCASTING CORPORATION , TUPPER, George, Ivor, Frederick , ALLEGRANZA, Anthony, Colin , DOHERTY, Phillip, Joseph
发明人： BRITISH BROADCASTING CORPORATION
IPC分类号： H03F01/32
CPC分类号： H03F1/3241
摘要： In signal processing circuitry using active devices, non-linearity of the device causes distortion of pure tones and the generation of intermodulation products for more complex signals. The transfer characteristics of such active devices (10) may be considered as the accumulated characteristics of input and output filter stages (12, 16) separated by a non-linear region (14). To compensate for non-linearities and reduce intermodulation products, a drive circuit (18) comprises pre- and post-correction filters (26, 28) separated by a compensating amplifier (20). The frequency response of the pre-correction filter (26) corresponds to that of the input filter stage (12) but is reversed in the frequency spectrum; with conventional I.F. the transfer characteristic of the amplifier (20) and frequency response characteristic of the post-correction filter (28) are the respective complements of those of the non-linear region (14) and pre-correction filter (26). The circuitry may be extended to compensate for active devices having more than one non-linear region and has particular application to klystron amplifiers used in broadcast television transmitters.
摘要翻译：在使用有源器件的信号处理电路中，器件的非线性引起纯音的失真，并产生更复杂信号的互调产物。这种有源器件（10）的传输特性可以被认为是由非线性区域（14）分离的输入和输出滤波器级（12,16）的累积特性。为了补偿非线性并减少互调产物，驱动电路（18）包括由补偿放大器（20）分离的校正后校正滤波器（26,28）。预校正滤波器（26）的频率响应对应于输入滤波器级（12）的频率响应，但在频谱中相反; 与常规I.F. 放大器（20）的传递特性和后校正滤波器（28）的频率响应特性是非线性区域（14）和预校正滤波器（26）的相应补码。电路可以被扩展以补偿具有多于一个非线性区域的有源器件，并且具有特定应用于广播电视发射器中使用的速调管放大器。

IPRDB

热门服务

关于我们

友情链接

联系方式