Title :
Off-axis properties of silicon and quartz dielectric lens antennas
Author :
Filipovic, Daniel F. ; Gauthier, Gildas P. ; Raman, Sanjay ; Rebeiz, Gabriel M.
Author_Institution :
Qualcomm. Inc., San Diego, CA, USA
fDate :
5/1/1997 12:00:00 AM
Abstract :
The theoretical far-field patterns and Gaussian-beam coupling efficiencies are investigated for a double-slot antenna placed off aids on extended hemispherical silicon and quartz lenses. Measured off-axis radiation patterns at 250 GHz agree well with the theory. Results are presented that show important parameters versus off-axis displacement: scan angle, directivity, Gaussicity, and reflection loss. Directivity contour plots are also presented and show that near-diffraction limited performance can be achieved at off-axis positions at nonelliptical extension lengths. Some design rules are discussed for imaging arrays on dielectric lens antennas
Keywords :
antenna radiation patterns; antenna testing; lens antennas; millimetre wave antenna arrays; quartz; silicon; 250 GHz; EHF; Gaussian beam coupling efficiencies; Si; design rules; directivity contour plots; double-slot antenna; extended hemispherical silicon lens; far-field patterns; imaging arrays; millimeter wave antennas; near-diffraction limited performance; nonelliptical extension lengths; off-axis displacement; off-axis properties; off-axis radiation pattern measurement; quartz dielectric lens antennas; reflection loss; scan angle; silicon dielectric lens antennas; Antenna arrays; Antenna measurements; Antenna radiation patterns; Antenna theory; Dielectric measurements; Gaussian processes; Lenses; Optical design; Reflection; Silicon;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
