Coupling port for multiple capacitor, distribution inductor resonator

摘要

A broadband, varactor-tuned shorted coax resonator (22) is provided with a single point coupling port (56) that facilitates coupling of discrete circuitry to the distributed resonator. The coupling port is defined by adding a second shorted coax line (26) across the end of the first (24). The outer conductors (30,44) of the two lines are interconnected. The inner conductors (28,42) of the two lines are serially coupled and define a coupling gap (56), either along their length or at their ends, across which discrete circuitry can be connected. In a preferred form of the invention, the discrete circuitry is positioned in a region within the periphery (76) of one of the inner conductors in order to provide an electromagnetic shield for the circuitry.