Microstrip antennas on localized micromachined dielectric substrates

Author

Courtay, A. ; Gauthier, G.P. ; Rebeiz, G.M.

Author_Institution

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

Volume

2

fYear

1996

fDate

21-26 July 1996

Firstpage

1246

Abstract

Micromachining techniques using closely spaced holes have been used underneath a microstrip antenna on a high dielectric constant substrate (/spl epsiv//sub /spl gamma//=10.8) to synthesize a localized low dielectric constant environment (/spl epsiv//sub /spl gamma//=2.3). The bandwidth of a 12.8 GHz microstrip antenna, was improved from 0.8% to 7.8%, and the measured radiation efficiency increased from 40% to 70%. We believe that this technique can be applied to millimeter-wave (30-100 GHz) microstrip antennas on GaAs substrates to result in relatively wideband (4-6%) MMIC active antenna modules for phased-arrays and collision avoidance systems.

Keywords

active antenna arrays; antenna phased arrays; antenna radiation patterns; antenna testing; micromachining; microstrip antenna arrays; millimetre wave antenna arrays; permittivity; 12.8 GHz; 30 to 100 GHz; 70 percent; GaAs; III-V semiconductor; bandwidth; collision avoidance systems; high dielectric constant substrate; localized micromachined dielectric substrates; low dielectric constant; measured radiation efficiency; micromachining techniques; microstrip antennas; millimeter-wave microstrip antennas; phased arrays; wideband MMIC active antenna modules; Antenna measurements; Bandwidth; Broadband antennas; Dielectric constant; Dielectric measurements; Dielectric substrates; High-K gate dielectrics; Micromachining; Microstrip antennas; Millimeter wave measurements;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1996. AP-S. Digest

Conference_Location

Baltimore, MD, USA

Print_ISBN

0-7803-3216-4

Type

conf

DOI

10.1109/APS.1996.549822

Filename

549822