The testing head further comprises a second antenna for communicating with the first antenna;

测试头还包括一第二天线，用以与第一天线通信；

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An antenna switching system for switching between a first antenna and a second antenna, where a gain of the first antenna is different from a gain of the second antenna, is disclosed.

本发明提供了一种用于在第一天线以及第二天线之间作切换的天线切换系统，其中第一天线的增益不同于第二天线的增益。

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With the helical antenna and a V-shaped plate antenna as a unit antenna and the second-order hexagon as the array, the antennas are integrated and simulated and get the low side-lobe characteristics.

分别采用螺旋天线和V形平板天线作为单元天线，以二阶六边形为阵列进行综合仿真，得到了比较低的旁瓣。

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Electrical engineers at Stanford built a cardiac device that uses a combination of inductive and radiative transmission of power, at about 1.7 billion cycles per second, to its coiled receiving antenna.

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The setup consisted of a radar emitter made out of one coffee can and a second can with a couple of LEDs attached to serve as a tethered receiver antenna.

ENGADGET: Man illuminates electromagnetic waves using coffee cans and LEDs, Christmas-colored science ensues

Second, the delivery method is outdated and the extra hardware, including a special antenna, and design requirements increase production costs for little return in value.

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