The aperture field distribution of the ring focus antenna is reviewed in view of the energy conservation law, and the simple formula for calculating its radiation pattern is deduced.
该文从能量守恒观点出发，讨论了副面为椭圆的环焦天线的口径场分布，并导出了计算其方向图的简单表达式。
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The results show that the developed antenna choke ring can effectively reduce the multi-path effects and can improve the interference-resistant ability of the single frequency GPS receiver, NTSCGPS-1.
Rotate the SKIM and its mounting bracket downwards and then to the side away from the steering column to slide the SKIM antennaring from around the ignition switch lock cylinder housing.