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Off-axis properties of silicon and quartz dielectric lens antennas

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4 Author(s)
D. F. Filipovic ; Qualcomm. Inc., San Diego, CA, USA ; G. P. Gauthier ; S. Raman ; G. M. Rebeiz

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

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:45 ,  Issue: 5 )