White Paper: Manufacturing & Prototyping

125 GHz Frequency Doubler using a Waveguide Cavity Produced by Micro Stereolithography


This technical paper reports on the first Schottky diode frequency doubler with a split-block waveguide structure fabricated by a high-precision projection micro-stereolithography (PµSL) printing process. The printed polymer waveguide parts were plated with copper and a thin layer of gold. The surface roughness of the printed waveguide parts has been characterized and the critical dimensions measured, revealing good printing quality and dimensional accuracy that meets the tight tolerance requirements for sub-terahertz active devices.

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