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公开(公告)号：US4370622A
公开(公告)日：1983-01-25
申请号：US246455
申请日：1981-03-23
CPC分类号： H03G3/3042 , H04B2001/0433
摘要： An intermodulation distortion limiter controls the ratio of average power to peak envelope power in the output of a linear power amplifier and this protects against excess non-linearity by reducing the drive power when the ratio exceeds a similar ratio associated with the incoming RF signal.
摘要翻译： 互调失真限制器控制线性功率放大器的输出中的平均功率与峰值包络功率的比率，并且当比率超过与输入RF信号相关联的类似比率时，通过降低驱动功率来防止过多的非线性。
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公开(公告)号：US4349799A
公开(公告)日：1982-09-14
申请号：US243014
申请日：1981-03-12
IPC分类号： H01P1/10
CPC分类号： H01P1/10
摘要： An apparatus is disclosed for selecting between multiple radio frequency circuits such as low pass filters. Each of the circuits is mounted on a printed circuit board, with first and second terminals printed on the board. Each of the terminals has a raised electrical contact on it. Associated with the first terminals of the circuits is a first printed strip transmission line with raised contacts spaced along it, each contact near a corresponding contact on one of the first terminals of the circuits. A second printed transmission line is similarly arranged. External connection to the apparatus is made at one end of each of the transmission lines. To select one of the circuits, the first and second terminals of the circuit are connected to the corresponding transmission lines, by a switch which moves a resilient conducting member against the pairs of raised contacts of the transmission lines and the circuit terminals.
摘要翻译： 公开了用于在诸如低通滤波器之类的多个射频电路之间进行选择的装置。 每个电路安装在印刷电路板上，第一和第二端子印在电路板上。 每个端子上都有一个凸起的电气接触。 与电路的第一端子相关联的是第一印刷带状传输线，其具有沿其间隔开的凸起接触件，每个接触件在电路的一个第一端子上的相应触点附近。 类似地布置第二印刷传输线。 在每个传输线的一端进行到设备的外部连接。 为了选择电路中的一个，电路的第一和第二端子通过使弹性导电构件抵靠传输线和电路端子的凸起接触件对移动的开关连接到相应的传输线。
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