Coupler with coupled line used to cancel finite directivity

摘要: A directional coupler is disclosed comprising either a stripline or microstrip transmission line apparatus serially coupled to an error correcting circuitry which designed minimize the standing wave in line. Elimination of results better accuracy. The uses impedance mismatch preselected magnitude and phase angle are determined by varying same at particular frequency until minimized. In preferred embodiment, length coaxial cable used.