A Novel Wavemeter for Dielectric Waveguide

This paper presents a novel wavemeter for use with dielectric waveguide. A movable piece of dielectric is placed parallel to a dielectric guide of identical cross section, forming a coupled structure. This causes varying amounts of energy to radiate from the far end of the movable dielectric. By locating the separation which results in maximum radiation loss, the operating frequency can be obtained. Experimental and theoretical results are given and are shown to be in good agreement.