Impedance matching circuit and impedance matching method
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United States of America Patent
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Dec 12, 2017
Grant Date -
Jun 29, 2017
app pub date -
Apr 17, 2016
filing date -
Dec 24, 2015
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An impedance matching circuit is disclosed. The impedance matching circuit adapted to an antenna includes a signal feed-in line, a phase delay line and a synthesized transmission line. The signal feed-in line receives an input signal from a wireless transceiver circuit. The phase delay line is electrically coupled between the antenna and the signal feed-in line, and delivers the input signal from the wireless transceiver circuit to the antenna. A first terminal of the synthesized transmission is electrically coupled to the signal feed-in line and the phase delay line. A second terminal of the synthesized transmission is configured to be opened. Based on the antenna operates in a first transmission medium or a second transmission medium, the input signal is transmitted to the antenna through different patterns selectively.
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