Microstrip filter with slot resonators in ground plane
The development of contemporary SHF systems calls for a broad nomenclature of frequency-selective devices, band-pass filters in particular. One of the possible directions of filter design is the usage of electromagnetic-bandgap (EBG) structures, which can be implemented in the form of certain slots in a microstrip line’s ground plane. It was previously proposed to use these structures as parts of output matching networks of high-efficiency SHF amplifiers built according to harmonic-manipulation approach.