公开(公告)号：US3986123A

公开(公告)日：1976-10-12

申请号：US610042

申请日：1975-09-03

申请人： Sebastiano Tirro ,  Roberto Cafissi ,  Enzo Cavalieri d'Oro

发明人： Sebastiano Tirro ,  Roberto Cafissi ,  Enzo Cavalieri d'Oro

IPC分类号： H04J11/00 ,  H03H11/26 ,  H04B7/00 ,  H04B7/15 ,  H04B7/02

CPC分类号： H04B7/002

摘要： A station for the transmission and reception of electromagnetic waves (e.g. from a communication satellite in stationary earth orbit), operating in a multichannel band with two conjugate polarizations, includes a regenerative distortion compensator in a receiving waveguide branch and a predistorter in a transmitting waveguide branch, both controlled by a processor responsive to output signals from a subsequent i-f stage in which a distortion monitor measures cross-talk between the two polarizations on the basis of two central beacons extracted from the incoming message band. The distortion monitor is preceded within the i-f stage by a phase and amplitude stabilizer and is followed by a demodulating stage in which the message signals are distributed to different transmission paths corresponding to the several channels, each transmission path including an individual cancellation-type distortion corrector controlled either by coherent detectors responding to respective channel beacons or by correlators fed with message signals from the two polarizations.

摘要翻译： 用于在具有两个共轭极化的多通道频带中操作的用于发送和接收电磁波（例如，来自固定地球轨道中的通信卫星）的站包括在接收波导支路中的再生失真补偿器和发射波导支路中的预失真器 两者都由一个处理器进行控制，响应来自后续的if阶段的输出信号，其中失真监测器基于从输入消息频带提取的两个中央信标来测量两个极化之间的串扰。 失真监视器在相位和幅度稳定器的if阶段之前，后面是一个解调阶段，其中消息信号分配到与几个通道相对应的不同传输路径，每个传输路径包括一个单独的消除型失真校正器 由相应的检测器控制，响应于相应的信道信标，或由馈送有来自两个极化的消息信号的相关器控制。