The invention discloses an intelligent antenna switching circuit and method based on
signal receiving strength, and a
router, and relates to the technical field of intelligent antennae, and the circuit comprises a main control
chip which receives feedback signals, forwarded by a
radio frequency chip, of all antennas in an antenna module, calculates the receiving strength, and stores the calculation data in a storage module; the calculation data in the storage module is called and compared with feedback signals of all antennas in the antenna module, and a result
signal is sent to the
radio frequency chip; the
radio frequency chip receives the feedback
signal, transmits the feedback signal to the main control chip, and sends a
control signal to the switch chip according to the result signal; the switch chip switches on one antenna channel according to the
control signal. According to the method, the RF signal receiving strength of the double-path or multi-path antenna is calculated through the target function, the antenna channels are preferentially and automatically switched, so that the purpose of antenna signal performance optimization is achieved, the purposes of optimizing the
signal quality, effectively suppressing interference and widening the communication coverage range are achieved, and the target function is simple, easy to calculate and implement and low in cost.