Patent ID: 7843286
Filing Date: 2010-11-30
Classification: H01P

Abstract:
1. A radio-frequency filter arrangement comprising: at least one filter which has a number of cavities which are coupled to one another for radio-frequency purposes, a respective ring-like dielectric resonator element which is arranged in a fixed position in each of the cavities, each corresponding ring-like dielectric resonator element having therein a respective eccentric through-hole, an axis of the respective eccentric through-hole is offset from an axis of the corresponding ring-like dielectric resonator element, and a respective dielectric body having the same thickness as a thickness of the corresponding ring-like dielectric resonator element, disposed in each respective eccentric through-hole so as to be rotatable about the axis of the respective eccentric through-hole and so that a position of the respective dielectric body relative to the corresponding dielectric resonator element can be varied in order to tune the frequency of the at least one filter.