Patent ID: 6897741
Filing Date: 2005-05-24
Classification: H01P

Abstract:
1. A dielectric duplexer comprising: a first dielectric filter on a transmission side and a second dielectric filter on a receiving side, the first dielectric filter comprising a first plurality of TM mode dielectric resonators having a cavity with an opening surface and a dielectric core placed within the cavity, the second dielectric filter comprising a second plurality of TM mode dielectric resonators having a cavity with an opening surface and a dielectric core placed within the cavity wherein a degree of multiplexing of at least one resonator of the first plurality of TM mode dielectric resonators differs from a degree of multiplexing of the other TM mode dielectric resonators of the first plurality of TM mode dielectric resonators, wherein a degree of multiplexing of at least one resonator of the second plurality of TM mode dielectric resonators differs from a degree of multiplexing of the other TM mode dielectric resonators of the second plurality of TM mode dielectric resonators, wherein the first and second dielectric filters are configured such that each resonator of the first and second plurality of TM mode dielectric resonators are arranged adjacent to one another with the opening surface of each cavity facing in the same direction and that the adjacent TM mode dielectric resonators are coupled to each other, and wherein a combination of the first plurality of TM mode dielectric resonators which comprise the first dielectric filter on the transmission side differs from a combination of the second plurality of TM mode dielectric resonators which comprise the second dielectric filter on the receiving side.