Micromachined Wideband Ridge Gap Waveguide Power Divider at 220–325 GHz

A micromachined ridge gap waveguide power divider operating at 220–325 GHz is presented. The device fabricated by SUEX dry film photoresist. Dry photoresist can be used to obtain geometrical features with high accuracy using a robust fabrication process. designed has simple and wide band performance. measured transmission coefficients are equal −3.5 ± 0.4 dB the input reflection coefficient below −12 GHz. measurement results in good agreement simulations, demonstrating that proposed method suitable for of components millimeter sub-millimeter wave range. presented low-loss may enable cost-effective rapid passive devices such as gain antennas up THz frequencies.