ANTENNA TRANSCEIVER MODULE, MULTI-INPUT MULTI-OUTPUT ANTENNA TRANSCEIVER SYSTEM, AND BASE STATION

Embodiments of this application relate to the field of communication device technologies, and provide an antenna transceiver module, a multiple-input multiple-output antenna transceiver system, and a base station, used for shortening channel quality estimation duration while ensuring a downlink coverage capability of the base station and controlling a base station cost. The antenna transceiver module includes a transmit chain and a plurality of receive chains; the transmit chain includes a main chain and a plurality of branch chains; input ends of the plurality of branch chains are connected to an output end of the main chain; an output end of each branch chain is configured to connect to a duplexer; at least one of the plurality of branch chains includes a phase shifter; a quantity of the plurality of receive chains is equal to a quantity of all output ends of the plurality of branch chains; input ends of the plurality of receive chains have one-to-one correspondence to all the output ends of the plurality of branch chains; and the input end of each receive chain of the plurality of receive chains is configured to connect to the duplexer connected to the output end of the branch chain corresponding to the input end of the receive chain. An electronic element provided in embodiments of this application is used as a power amplifier.