公开(公告)号：US4053843A

公开(公告)日：1977-10-11

申请号：US670217

申请日：1976-03-25

申请人： Larry Richard Wright ,  Donald Charles Cohlman

发明人： Larry Richard Wright ,  Donald Charles Cohlman

IPC分类号： H04B1/10 ,  H03G3/20 ,  H03G3/34

CPC分类号： H03G3/3052 ,  H03G3/345

摘要： A radio receiver includes a blanker circuit for muting the receiver in response to interfering noise signals. The invention contemplates a transistor switch which, when biased to its nonconducting state, inhibits blanker action. The transistor is biased to nonconduction when the receiver provided automatic gain control (AGC) level is below the threshold voltage of the transistor. An adjustment is provided for controlling the AGC level at which blanker inhibit is introduced. Temperature compensating circuitry maintains inhibit action response at the threshold voltage with changes in ambient temperature.

摘要翻译： 无线电接收机包括用于响应于干扰噪声信号使接收机静音的消隐电路。 本发明考虑了一种晶体管开关，当被偏置到其非导通状态时，晶体管开关阻止消除器动作。 当接收器提供自动增益控制（AGC）电平低于晶体管的阈值电压时，晶体管被偏置为非导通。 提供了用于控制引入消隐抑制的AGC电平的调整。 温度补偿电路在环境温度变化的情况下保持阈值电压下的抑制作用响应。