Nonradiative dielectric waveguide resonator, nonradiative dielectric waveguide filter, duplexer and transceiver incorporating the same

Abstract From the Canadian patent

A nonradiative dielectric waveguide filter of the present invention permits the manufacturing process including the production of a dielectric strip to be simpler in which the filter can be formed by a pillar dielectric strip. The nonradiative dielectric waveguide filter includes resonators input-output connection units, and cut-off regions in which the upper and lower conductor plates and a dielectric strip disposed therebetween form the filter. In this case the main signal-transmitting mode is the LSM mode; a groove having a bottom and conductor walls is disposed in a position in which the conductor plates are opposing; the resonator is formed by fitting the dielectric strip into the …