Airborne satellite communication antenna suitable for high and low orbit satellites and signal transmission method

The invention discloses an airborne satellite communication antenna suitable for high and low orbit satellites and a signal transmission method, and relates to the field of airborne satellite communication antennas. Comprising a transmitting and receiving channel assembly, and the transmitting and receiving channel assembly comprises an antenna array plane, an amplitude limiter, a low-noise amplifier, a phase shifter, a 90-degree bridge, a switch, a power divider and an amplitude/phase shifter which are connected in sequence. The power division network comprises a multi-path power divider, a frequency selection filter, a phase shifter and a combining power divider which are connected in sequence, after a signal passes through the multi-path power divider, an original signal is divided into multiple paths of signals, after the signal passes through the frequency selection filter, the phase shifter and the combining power divider of different frequency bands, two paths of different signals with frequency points