公开(公告)号：EP2820763A1

公开(公告)日：2015-01-07

申请号：EP13710312.3

申请日：2013-02-28

申请人： Sennheiser electronic GmbH & Co. KG

发明人： KLEINSORGE, Mathias ,  BUDNIK, Christian

IPC分类号： H04B1/04 ,  H03G3/00

CPC分类号： H03G3/00 ,  H03F3/181 ,  H03F3/20 ,  H03G3/3042 ,  H04B1/0458 ,  H04B1/0475 ,  H04B2001/0416

摘要： A high-frequency HF transmitter for wireless microphones, guitar transmitters or pocket transmitters is provided. The transmitter has at least one antenna (30, 70, 85), a power amplifier (40) for amplifying a high-frequency audio signal, an interference signal detection unit (60, 65) for detecting an interference signal injected via the antenna (30, 70, 85), a power detector (50) at the output of the detection unit (60, 65) for detecting the power of the interference signals detected by the interference signal detection unit (60, 65) and an operating point control unit (20) for adjusting the operating point power of the power amplifier (40) on the basis of the power of the interference signals which is detected by the power detector.

摘要翻译： 提供了用于无线麦克风，吉他发射器或袖珍发射器的高频HF发射器。 所述发射机具有至少一个天线（30,70,85），用于放大高频音频信号的功率放大器（40），用于检测通过以下方式耦合的干扰信号的干扰信号检测单元（60,65） 天线（30,70,85），检测单元（60,65）的输出端的功率检测器（50），用于检测由干扰信号检测单元（60,65）检测到的干扰信号的功率;以及 工作点调节单元（20），用于根据由功率检测器检测的输出信号的功率来调节功率放大器（40）的工作点功率。