Signal transmitting and receiving method of low-profile common-caliber multi-phase center array antenna

The invention relates to a signal transmitting and receiving method of a low-profile common-aperture multi-phase center array antenna, belongs to the technical field of antennas, and solves the problems of low antenna aperture utilization rate and overlarge antenna size in the prior art. The signal transmitting and receiving method comprises an electromagnetic wave radiation method and an electromagnetic wave receiving method. The feed network comprises a transmitting network and a receiving network; the process of the electromagnetic wave radiation method is that an electromagnetic signal is sequentially transmitted to the circulator combination and the waveguide sub-array antenna unit through the transmitting network, and the electromagnetic signal is radiated through the waveguide sub-array antenna unit; the process of the electromagnetic wave receiving method is that electromagnetic signals received by the waveguide sub-array antenna units are sequentially transmitted to the circulator combination and the