Microwave filtering circulator based on space-time modulation and radio frequency front end

The invention relates to a microwave filtering circulator based on space-time modulation, which comprises a dielectric substrate and three microstrip resonators arranged on the dielectric substrate, and is characterized in that each microstrip resonator is correspondingly connected with a signal input/output port; wherein each two micro-strip resonators are in coupling connection through a gap, and the two ends of each micro-strip resonator are grounded; a first adjusting circuit used for adjusting the coupling strength between every two microstrip resonators is connected between every two microstrip resonators, and each first adjusting circuit is correspondingly connected with a modulation signal input port. The provided microwave filtering circulator is designed based on a new circulator architecture, the application range is wider, the application scene and possibility of the space-time modulation technology are greatly expanded, and the possibility that the non-magnetic filtering circulator based on space