Patent ID: 7561004
Filing Date: 2009-07-14
Classification: G01R,H01P

Abstract:
1. A harmonic rejection load pull tuner with an input (test) and an output (idle) port, a slotted airline between the two ports and a set of parallel resonator assemblies, made of central open stubs and external metallic walls, said central stubs being connected galvanically with the center conductor of said slotted airline in parallel and sliding along said center conductor of said airline, said open stubs being loaded dielectrically at their open end using cylinders made of dielectric material, and the whole resonator assembly sliding with good galvanic contact on top of said slotted airline, said dielectric cylinders can slide inside the metallic housing of said resonator assemblies and slide fitting closely over the open end of said resonator stubs; said dielectric cylinders are movable vertically and are insertable at adjustable depth inside the resonator housing and slide over the said resonator stubs, in order to adjust the capacitive load and thus the electrical length and resonance frequency of said open stubs.