Ultra compact E-plane waveguide multiplexers

This paper present ultra compact diplexers and triplexers based on ultra compact E-plane waveguide filters. The ultra compact filters have significantly better attenuation and selectivity at both upper and lower stop bands compared to that of conventional E-plane filters. This allows channels to be placed much closer to one another. The filters retain ease of manufacturing of typical E-plane filters. Simulation and experimental verification of one such filter is given and simulation of a diplexer and triplexers based on such filters are demonstrated.