Patent ID: 7610072

Claim:
A stripline filter, comprising: a) a first resonator, the first resonator having a first edge, a first end and a second end, wherein the first edge extends generally from the first end to the second end of the first resonator; b) a second resonator, the second resonator having a second edge, a first end and a second end, wherein the second edge extends generally from the first end to the second end of the second resonator, wherein the first and second resonator are physically located opposing one another with the first edge generally parallel to the second edge; and c) a coupling member physically located between the first and second resonators, wherein the coupling member includes a first section that physically extends only along a portion of the first edge at the second end, a third section that physically extends only along a portion of the second edge at the first end, and a second section that extends between and connects the first and third sections, wherein the coupling member is non-resonant in a passband of the stripline filter and is arranged and configured to transfer energy between the first and second resonator and minimize the sensitivity to tuning of the filter.