One is composed of two high-order mode microstrip antennas and a simple four-arm spiral antenna, which could satisfy with different radiation demands of transmitter and receiver.
一种是采用两个高次模天线分别实现中频和高频性能要求，而采用简单的四臂螺旋天线实现低频要求。
One is composed of two high-order mode microstrip antennas and a simple four-arm spiral antenna, which could satisfy with different radiation demands of transmitter and receiver.
一种是采用两个高次模天线分别实现中频和高频性能要求，而采用简单的四臂螺旋天线实现低频要求。
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