Title :
Millimeter-wave double-dipole antennas for high-gain integrated reflector illumination
Author :
Filipovic, Daniel F. ; Ali-Ahmad, Walid Y. ; Rebeiz, Gabriel M.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
fDate :
5/1/1992 12:00:00 AM
Abstract :
A double-dipole antenna backed by a ground plane has been fabricated for submillimeter wavelengths. The double-dipole antenna is integrated on a thin dielectric membrane with a planar detector at its center. Measured feed patterns at 246 GHz agree well with theory and demonstrate a rotationally symmetric pattern with high coupling efficiency to Gaussian beams. The input impedance is around 50 Ω and will match well to a Schottky diode or SIS detector. The double-dipole antenna served as the feed for a small machined parabolic reflector. The integrated reflector had a measured gain of 37 dB at 119 μm. This makes the double-dipole antenna ideally suited as a feed for high-resolution tracking or for long-focal-length Cassegrain antenna systems
Keywords :
antenna radiation patterns; dipole antennas; microwave antennas; reflector antennas; 119 micron; 246 GHz; 37 dB; Cassegrain antenna systems; Gaussian beams; MM-wave type; double-dipole antennas; feed patterns; ground plane; high coupling efficiency; high-gain integrated reflector illumination; high-resolution tracking; input impedance; long-focal-length; parabolic reflector; planar detector; rotationally symmetric pattern; submillimeter wavelengths; thin dielectric membrane; Antenna feeds; Antenna measurements; Biomembranes; Detectors; Dielectric measurements; Impedance; Millimeter wave measurements; Optical coupling; Rotation measurement; Wavelength measurement;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
