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

fYear

2010

fDate

23-28 May 2010

Firstpage

1

Lastpage

1

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest (MTT), 2010 IEEE MTT-S International

Conference_Location

Anaheim, CA

ISSN

0149-645X

Print_ISBN

978-1-4244-6056-4

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2010.5516723

Filename

5516723