Title :
Modification of waveguide flange design for millimeter and submillimeter-wave measurements
Author :
Horibe, Masahiro ; Noda, Kazufusa
Author_Institution :
Adv. Ind. Sci. & Technol., Nat. Metrol. Inst. of Japan, Tsukuba, Japan
Abstract :
Waveguide flange design makes major impact to measurement reproducibility in the range of millimeter and sub-millimeter-wave frequencies, e.g. above 110 GHz. Original concept of flange design, so-call “Oshima” flange, was established in the early 2000s. Its flange alignment is ensured using ring with tight tolerance, however, it is not compatible to MIL-DTL-3922/67C (UG-387) flange. This paper describes a modification of “Oshima” flange in order to establishing a compatibility with UG-387 flange design, and evaluation result of its capability of connection repeatability in the WR-3 (220 GHz-330 GHz) frequency band. Furthermore, the quarter wave length shim, as a TRL “through” line standard, is specially modified to fit with a new design of “Oshima” flange, then, its capability of connection repeatability is also measured and discussed.
Keywords :
design engineering; flanges; millimetre wave measurement; submillimetre wave measurement; waveguides; Oshima flange alignment; TRL through line standard; UG-387 flange design; WR-3 frequency band; frequency 220 GHz to 330 GHz; quarter wavelength shim; submillimeter-wave measurement reproducibility; waveguide flange design; Calibration; Couplings; Extraterrestrial measurements; Flanges; Frequency measurement; Reflection; Transmission line measurements; Millimeter and sub-millimeter wave frequencies; alignment; flange interface; rectangular waveguide;
Conference_Titel :
Microwave Measurement Conference (ARFTG), 2011 77th ARFTG
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-61284-959-1
Electronic_ISBN :
978-1-61284-960-7
DOI :
10.1109/ARFTG77.2011.6034557
