因此，研究抛物面天线等高频天线之间的电磁耦合成为迫切需要解决的难题之一。
Therefore, it has been one of the difficult problems which are urgent to solve that the study of electromagnetic coupling between high-frequency antennas such as paraboloidal antennas.
收发分离天线体制下，天线开关的设计与实现，并提出了收发共用天线体制下高频天线开关的设计方案。
Has developed the antenna switch, which is used in T-R separate antenna system, also put forward the scheme of designing the switch for T-R community antenna system.
通过使用定向声波天线和高频网络波形(HNW)，无线电可以采用单一频率自动创建整个网络。
Using a directive beam antenna and the Highband Networking Waveform (HNW), the radio can automatically create the entire network using a single frequency.
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