94 GHz integrated horn monopulse antennas

Author

Ling, Curtis C. ; Rebeiz, Gabriel M.

Author_Institution

Dept. of Electr. Eng., Michigan Univ., Ann Arbor, MI, USA

Volume

40

Issue

8

fYear

1992

fDate

8/1/1992 12:00:00 AM

Firstpage

981

Lastpage

984

Abstract

A monolithic azimuthal monopulse antenna for 94-GHz applications has been developed. The structure consists of a single dipole suspended in one plane of an integrated horn cavity to obtain the sum pattern, and an antiparallel pair of dipoles suspended in a different plane of the same horn cavity to achieve the difference pattern. Pattern measurements of microwave models and on the millimeter-wave antennas show good agreement with theory and exhibit symmetry with a sharp -30-dB null at broadside for the difference antenna. Microwave model measurements show input impedances close to 50 Ω, with greater than -25-dB isolation between sum and difference antennas across a 10% bandwidth

Keywords

antenna radiation patterns; dipole antennas; electric impedance; horn antennas; microwave antennas; 94 GHz; EHF; difference pattern; input impedance; integrated horn cavity; microwave models; millimeter-wave antennas; monolithic azimuthal monopulse antenna; single dipole; sum pattern; Antenna measurements; Antenna theory; Bandwidth; Dipole antennas; Horn antennas; Impedance measurement; Microwave antennas; Microwave measurements; Microwave theory and techniques; Millimeter wave measurements;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.163437

Filename

163437