BIDIRECTIONAL COUPLER FOR BROADBAND HIGH POWER COAXIAL WAVEGUIDE

摘要

According to the present invention, disclosed is a bidirectional coupler for a broadband high power coaxial waveguide. The bidirectional coupler comprises: a hollow inner tube having a predetermined diameter; a hollow outer tube having the diameter greater than that of the inner tube, having first and second holes spaced apart from each other at the top thereof and having the same axle as the inner tube; a first capacitive coupler mounted through the first hole to measure a radio frequency ( RF) power coupling output of a forward RF traveling wave; and a second capacitive coupler mounted through the second hole to measure the RF power coupling output of the reverse RF reflected wave. According to the present invention, the forward RF traveling wave and the reverse RF reflected wave can be all measured, and a dielectric breakdown phenomenon in air of the waveguide can be prevented even in a high power environment. In addition, only one capacitive coupler produces a coupling output, and the remaining capacitive couplers do not produce the coupling output but are isolated. Thus, the degree of isolation is improved.;COPYRIGHT KIPO 2017