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

Volume

40

Issue

5

fYear

1992

fDate

5/1/1992 12:00:00 AM

Firstpage

962

Lastpage

967

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;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.137404

Filename

137404