Title :
92 GHz dual-polarized integrated horn antennas
Author :
Ali-Ahmad, W.Y. ; Rebeiz, Gabriel M.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ, Ann Arbor, MI, USA
fDate :
6/1/1991 12:00:00 AM
Abstract :
A dual-polarized two-dimensional imaging array was designed for millimeter-wave applications. The dual-polarized design consists of two dipoles perpendicular to each other and suspended on the same membrane inside a pyramidal cavity etched in silicon. The dual-polarized antenna is fully monolithic with room available for processing electronics. The IF or video signals are taken out through a novel bias and feeding structure. The measured polarization isolation is better than 20 dB at 92 GHz, and the orthogonal channels show identical far-field patterns. The antenna is well suited for millimeter-wave polarimetric synthetic aperture radars (SARs) and high-efficiency balanced-mixer receivers
Keywords :
dipole antennas; directive antennas; microwave antenna arrays; radar antennas; waveguide antennas; 92 GHz; EHF; IF signal; Si; balanced-mixer receivers; bias structure; dipoles; dual-polarized integrated horn antennas; far-field patterns; feeding structure; high efficiency receivers; measured polarization isolation; orthogonal channels; polarimetric synthetic aperture radars; processing electronics; pyramidal cavity; two-dimensional imaging array; video signals; Antenna measurements; Aperture antennas; Biomembranes; Dipole antennas; Etching; Horn antennas; Millimeter wave measurements; Polarization; Receiving antennas; Silicon;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
