Title :
A ring-centered waveguide flange for millimeter- and submillimeter-wave applications
Author :
Li, Huaqing ; Kerr, A.R. ; Hesler, J.L. ; Xu, Hao ; Weikle, Robert M.
Author_Institution :
Univ. of Virginia, Charlottesville, VA, USA
Abstract :
Summary form only given. Waveguide flanges pose a major limitation to precise measurements above 110 GHz. This paper describes measurements on a new flange which is compatible with the standard UG-387 waveguide interface (MIL-DTL-3922/67C) but which offers significant improvement in alignment and repeatability. The ring-centered flange has a precisely machined boss centered on the waveguide aperture. The bosses of a mated pair of flanges are aligned by a separate coupling ring. The new flange is sexless and the contact surfaces are accessible for mechanical lapping to repair damage. Measurements of WR-5 waveguides (140-220 GHz) with ring-centered flanges, enhanced UG-387-type flanges, and a new flange proposed by Lau and Denning are compared.
Keywords :
flanges; waveguide couplers; UG-387 waveguide interface; WR-5 waveguides; contact surface; frequency 140 GHz to 220 GHz; mechanical lapping; millimeter-wave applications; ring-centered waveguide flange; submillimeter-wave applications; Extraterrestrial measurements; Flanges; Microwave measurements; Microwave technology; Millimeter wave technology; Observatories; Radio astronomy; Space technology; Submillimeter wave technology; Time measurement;
Conference_Titel :
Microwave Symposium Digest (MTT), 2010 IEEE MTT-S International
Conference_Location :
Anaheim, CA
Print_ISBN :
978-1-4244-6056-4
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2010.5516723
