Invention Grant
US08823493B2 Devices employing modulator switching and methods thereof 有权
采用调制器切换的装置及其方法

Devices employing modulator switching and methods thereof
Abstract:
In one embodiment, a RFID reader circuit includes a RF source input in a transmitting path, a RF modulator in parallel with a bypass, the RF modulator and the bypass being selectively coupled to the RF source input, at least one switch for selectively coupling an output of the RF modulator to the transmitting path, and a RF power amplifier in the transmitting path. In another embodiment, a RFID system includes a plurality of RFID tags, and a RFID reader, the RFID reader comprising a RFID reader circuit. The circuit includes a RF source input in a transmitting path, a RF modulator in parallel with a bypass, the RF modulator and the bypass being selectively coupled to the RF source input, at least one switch for selectively coupling an output of the RF modulator to the transmitting path, and a RF power amplifier in the transmitting path.
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