Beidou active antenna

The utility model is suitable for the technical field of Beidou satellite communication, and provides a Beidou active antenna which is connected with a Beidou satellite communication terminal through a radio frequency coaxial cable, and the Beidou satellite communication terminal provides a direct current electric signal with constant voltage for the Beidou active antenna. The transmitting module in the Beidou active antenna comprises a filtering unit used for filtering a first radio frequency signal to be transmitted; the switch control unit is connected with the filtering unit and the power amplification unit, and is used for acquiring a field intensity signal corresponding to the power of the first radio frequency signal after filtering processing, and performing switch control on the power amplification unit based on the field intensity signal; the power amplification unit is connected with the filtering unit and the switch control unit, and is used for performing power amplification processing on the fir