CTS Corporation
RF DIELECTRIC WAVEGUIDE FILTER

Abstract:

A dielectric waveguide filter comprising a block of dielectric material including exterior surfaces covered with a layer of conductive material. A plurality of resonators are formed on the block. RF signal input/outputs are formed on the block. An RF signal is transmitted through the block in a serpentine pattern. In one embodiment, a RF signal transmission channel is formed in the block and extends between and surrounding selected ones of the plurality of resonators in a serpentine pattern. In one embodiment, selected ones of the plurality of resonators are comprised of respective islands of dielectric material formed on one of the top and bottom surfaces of the block of dielectric material surrounded by the channel and respective counter-bores formed and extending into the respective islands of dielectric material. In another embodiment, the respective islands of dielectric material and counter-bores defining the respective resonators are formed in opposed top and bottom surfaces of the block.