Patent ID: 9105955
Filing Date: 2015-08-11
Classification: H01P

Abstract:
1. An adjustable resonator filter, which has a casing made up of a bottom, walls and a lid, wherein the casing functions as a ground for a transmission path and wherein the casing is divided into a plurality of resonator cavities by one or more conductive partitions, wherein there is a coupling opening in each of the one or more conductive partitions, wherein there is a coupling space in the casing adjacent to at least one of the one or more conductive partitions and positioned away from the coupling opening of the at least one of the one or more conductive partitions, wherein the coupling space is open into adjacent resonator cavities separated by the one of the one or more conductive partitions, wherein the adjustable resonator filter has at least one inductive coupling member, wherein the at least one inductive coupling member is arranged to extend through said coupling space into the adjacent resonator cavities and said at least one inductive coupling member is in electric contact with the casing in at least in one of the adjacent resonator cavities, and in said coupling space there is a moveable conductive adjustment piece, wherein the moveable conductive adjustment piece has a minimum position and a maximum position, wherein the moveable conductive adjustment piece is adjacent to the at least one inductive coupling member and an electric effect of the moveable conductive adjustment piece on the inductive coupling member is at a maximum when the moveable conductive adjustment piece is in the maximum position thereof, and wherein the moveable conductive adjustment piece is positioned away from the inductive coupling member and the electric effect of the moveable conductive adjustment piece on the inductive coupling member is at a minimum when the moveable conductive adjustment pieces is in the minimum position thereof.