Multiple-input multiple-output antenna transmitting-receiving circuit
A transceiver circuit, multi-output technology, applied in diversity/multi-antenna system, space transmit diversity and other directions, can solve the damage of low-noise amplifier or radio frequency transceiver, transmit/receive switch cannot achieve high isolation, affect antenna transmit power, etc. question
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[0030] figure 1 It is a block diagram of the MIMO antenna transceiver circuit 100 in an embodiment of the present invention. In this embodiment, the MIMO antenna transceiver circuit 100 includes a radio frequency transceiver 10 and a plurality of transceiver units 20a, 20b, 20c (in this embodiment, only three are used as an example, but not limited to three , can contain less than or more than three transceiver units) to realize the transmission or reception of multiple signals. Each transceiver unit 20 a , 20 b , 20 c includes a power amplifier 202 , a low noise amplifier 204 , a first switch unit 206 , a second switch unit 208 and an antenna 210 . The power amplifier 202 is electrically connected to the radio frequency transceiver 10 , and the power amplifier 202 amplifies the power of the signal output by the radio frequency transceiver 10 to be transmitted through the antenna 210 . The low noise amplifier 204 is electrically connected to the radio frequency transceiver 1...
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