Design of V-band dielectric filled waveguide filters with improved loss and suppression of parasitic waves

This paper presents the design and fabrication of a V-band surface mountable or wire/ribbon bondable dielectric filled waveguide bandpass filters. The filters are built on Alumina 99.6% substrate and take advantage of a novel microstrip to waveguide transitions (MWT). The filters provide 2.6dB or better of insertion loss across their bandwidth as well as 14dB or better of return loss. The filters are centered at 59GHz and 62GHz each with 3% of bandwidth over their operating frequencies. The results are validated by a good agreement between simulated and measured results.