Ku-band power combiner composed of metal-plated plastic waveguide hybrid

This paper describes the feasibility study of a metal-plated plastic waveguide power combiner for Ku-band solid state amplifier, aiming at the reduction in cost for high volume production and/or in weight. The relation between the draft angle for molding process and the combining loss characteristics is theoretically clarified. Furthermore, the experimental result of the 40 W four-way power combiner using plastic waveguide hybrid parts demonstrates validity of this investigation.