Patent ID: 9196942
Filing Date: 2015-11-24
Classification: H01P

Abstract:
1. An adaptable resonator filter, comprising a filter casing made up of a bottom, a plurality of walls including an end wall and a lid, which filter casing functions as a ground for a transfer path and is divided with conductive partitions into resonator cavities, an input connector with a middle conductor, an input resonator, an output resonator and an output connector with a middle conductor, wherein for adaptation of the filter; the filter further comprises a first coaxial transfer line for adapting input impedance of the filter, which first transfer line comprises an outer conductor and a middle conductor including a middle rod and a moveable conductive tuning element through which the middle rod passes, wherein the first transfer line is connected between the input connector and the input resonator of the filter, the filter further comprises a second coaxial transfer line for adapting output impedance of the filter, which second transfer line comprises an outer conductor and a middle conductor including a middle rod and a moveable conductive tuning element through which the middle rod passes, wherein the second coaxial transfer line is connected between the output connector and the output resonator; wherein the outer conductor of the first coaxial transfer line is connected by one end thereof to an outer conductor of the input connector and by another end thereof to the end wall of the filter casing, wherein a starting end of the middle rod of the first coaxial transfer line is connected to the middle conductor of the input connector and an opposing end of the middle rod connects to an internal connecting member of the input resonator; wherein the outer conductor of the second coaxial transfer line is connected by one end thereof to an outer conductor of the output connector and by another end thereof to the end wall of the filter casing, wherein a starting end of the middle rod of the second coaxial transfer line is connected to the middle conductor of the output connector and an opposing end of the middle rod connects to an internal connecting member of the output resonator; wherein each of the tuning elements of the first coaxial transfer line and the second coaxial transfer line is supported in an insulated manner on the middle rods of the first coaxial transfer line and the second coaxial transfer line and is configured so that the tuning element can be slid along the middle rod; wherein the middle rods of each of the first coaxial transfer line and the second coaxial transfer line are smaller in diameter than a diameter of the middle conductors of the input connector and the output connector respectively, and wherein the tuning elements of each of the first coaxial line and the second coaxial line are larger in diameter than the diameter of the middle conductors of the input connector and the output connector, respectively; and wherein each of the first coaxial transfer line and the second coaxial transfer line includes a dielectric control pin that extends from the tuning elements thereof and is arranged for moving the respective tuning elements.