The development of RWG absorbent harmonic filters

In this paper, some leaky-wave absorbent harmonic filters are presented that developed by NRIET which constructed by a primary rectangular waveguide and single, double, three series accessorial rectangular waveguide loads located at the wide or narrow face of the primary waveguide. The method of equivalent circuit is also presented to analyzed this type of waveguide leaky-wave harmonic filter. The tested results are also shown that all of the performances at pass band and stop band are all well.