Reconfigurable low-RCS circularly polarized antenna array

The invention discloses a reconfigurable low-RCS circularly polarized antenna array, which comprises a metal resonant structure, a dielectric substrate, a metal copper-clad floor, a feed network dielectric substrate, a microstrip feed network, a diode bias network dielectric substrate and a diode bias network which are arranged in sequence, the microstrip feed network penetrates through the feed network dielectric substrate, the metal copper-clad floor and the dielectric substrate through a metal probe to be connected with the metal resonant structure, so that circular polarization radiation of the antenna array is realized; the diode bias network is connected with the microstrip feed network through a metalized through hole penetrating through the diode bias network dielectric substrate; a PIN type diode is loaded at the tail end of a microstrip feeder network to serve as an electronic switch, and when the diode is in a conducting state, an antenna array is in a radiation state; when the diode is in a cut-of