Micromachined sub-millimeter and millimeter wave variable polarisation compensator

Author

Drysdale, T.D. ; Chong, H.M.H. ; Blaikie, R.J. ; Cumming, D.R.S.

Author_Institution

Centre for Nano Eng. Sci. & Technol., Canterbury Univ., Christchurch, New Zealand

Volume

1

fYear

2001

fDate

20-24 May 2001

Firstpage

535

Abstract

A micromachined variable polarisation compensator has been designed and demonstrated experimentally at 100 GHz. The device uses two interlocking artificial dielectric gratings to produce a birefringence that varies as a function of the separation distance. The maximum phase difference was measured to be 74/spl deg/, in good agreement with computer simulations. Quarter wave dielectric antireflection coatings can be added to the exterior surfaces to reduce the insertion loss.

Keywords

antireflection coatings; birefringence; compensation; diffraction gratings; electromagnetic wave polarisation; losses; micromachining; millimetre wave devices; periodic structures; submillimetre wave devices; 100 GHz; EHF; MM-wave polarisation compensator; THF; birefringence; insertion loss reduction; interlocking artificial dielectric gratings; micromachined variable polarisation compensator; phase difference; quarter wave dielectric antireflection coatings; submillimeter-wave polarisation compensator; Birefringence; Coatings; Computer simulation; Dielectric devices; Dielectric losses; Dielectric measurements; Gratings; Millimeter wave measurements; Phase measurement; Polarization;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2001 IEEE MTT-S International

Conference_Location

Phoenix, AZ, USA

ISSN

0149-645X

Print_ISBN

0-7803-6538-0

Type

conf

DOI

10.1109/MWSYM.2001.966949

Filename

966949