Wideband quasi-optical Fresnel rhomb for millimetre wavelengths.

Authors :: Unsworth, C. P.
Lesurf, J. C. G.
Source :: Electronics Letters (Institution of Engineering & Technology). 3/15/2007, Vol. 43 Issue 6, p348-349. 2p. 2 Diagrams, 2 Graphs.
Publication Year :: 2007
Abstract: The construction and performance measurement of a quasi-optical Fresnel rhomb for millimetre wavelengths is described. The Fresnel rhomb was found to operate successfully over W-band with an efficiency ranging from 85 to 95% as the frequency increased from 85 to 99 GHz. Thus, the device offers a wideband performance quarter-wave plate, suitable for quasi-optical systems at millimetre wavelengths. [ABSTRACT FROM AUTHOR]