MULTI RESONATOR NON-ADJACENT COUPLING

摘要

A coupling is provided for coupling non-adjacent resonators of a radio frequency filter. The coupling joins together non-adjacent resonators with a metal strip. The metal strip is physically connected to but electrically isolated from resonators located between the connected non-adjacent resonators. The metal strips include tabs the length of which may be varied. The coupling works with different resonator configurations including horizontally aligned resonators. The coupling allows for the jumping of an even number of resonators can produce zeros at high and low bands. A single coupling of this configuration enables two negative couplings.

主权项

1. A radio frequency (RF) filter including three or more resonators, the RF filter comprising:
a coupling contacting a first of the three or more resonators and a second of the three or more resonators, wherein the first and the second resonator are not adjacent to one another, and wherein the coupling is connected to but electrically isolated from each resonator of the three or more resonators positioned between the first and second resonators.