Abstract
Dielectric printed and plated waveguide components offer cost and weight benefits over metal printed equivalents, with silver plating using Tollens reagents holding significant advantages over electroplating. This work extends on previous demonstrations of this process in plating stereolithography (SLA) printed resin waveguide parts by investigating number of plating rounds, reaction temperature and plastic base. It is found that less than 1.5 dB/m attenuation is achievable in WR42 waveguide using white SLA plastic and silver plating, comparing favourably with the 10 dB/m achieved by printing the same part using Ti64 powder bed fusion. This process improvement is further demonstrated using waveguide power dividers, slow-wave delay sections and rectangular horn antennas.
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