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SINGLE INPUT/OUTPUT PORT RADIO FREQUENCY TRANSCEIVER FRONT END CIRCUIT WITH LOW NOISE AMPLIFIER SWITCHING TRANSISTOR
SINGLE INPUT/OUTPUT PORT RADIO FREQUENCY TRANSCEIVER FRONT END CIRCUIT WITH LOW NOISE AMPLIFIER SWITCHING TRANSISTOR
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机译:具有低噪声放大器切换晶体管的单输入/输出端口无线电频率收发器前端电路
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摘要
A front end circuit for coupling an antenna to a radio frequency (RF) transceiver for time domain duplex systems is disclosed. The front end circuit includes an antenna port, a power amplifier, a low noise amplifier, and a matching network. The output of the power amplifier and the input of the low noise amplifier are coupled to the matching network and connected in common to the antenna. The power amplifier and the low noise amplifier are activated and deactivated in sequence corresponding to the transmit and receive modes of the transceiver, and the matching network minimizes the effect that one has on the other at the designated operating frequency.
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