The antenna switch unit is selectively coupled to the first antenna or the second antenna.

天线切换单元选择性地耦接于第一天线或第二 天线。

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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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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.

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Second, the delivery method is outdated and the extra hardware, including a special antenna, and design requirements increase production costs for little return in value.

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