Title :
A 94-GHz aperture-coupled micromachined microstrip antenna
Author :
Gauthier, Gildas P. ; Raskin, Jean-Pierre ; Katehi, Linda P B ; Rebeiz, Gabriel M.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
fDate :
12/1/1999 12:00:00 AM
Abstract :
This paper presents an aperture-coupled micromachined microstrip antenna operating at 94 GHz. The design consists of two stacked silicon substrates: (1) the top substrate, which carries the microstrip antenna, is micromachined to improve the radiation performance of the antenna and (2) the bottom substrate, which carries the microstrip feed line and the coupling slot. The measured return loss is -18 dB at 94 GHz for a 10-dB bandwidth of 10%. A maximum efficiency of 58±5% has been measured and the radiation patterns show a measured front-to-back ratio of -10 dB at 94 GHz. The measured mutual coupling is below -20 dB in both E- and H-plane directions due to the integration of small 50-μm silicon beams between the antennas. The micromachined microstrip antenna is an efficient solution to the vertical integration of antenna arrays at millimeter-wave frequencies
Keywords :
antenna accessories; antenna radiation patterns; electromagnetic coupling; micromechanical devices; microstrip antenna arrays; millimetre wave antenna arrays; 18 dB; 58 percent; 94 GHz; 94-GHz aperture-coupled micromachined microstrip antenna; E-plane direction; H-plane direction; antenna arrays; coupling slot; front-to-back ratio; maximum efficiency; microstrip feed line; millimeter-wave frequencies; mutual coupling; radiation patterns; radiation performance; return loss; stacked silicon substrates; Antenna feeds; Antenna measurements; Antenna radiation patterns; Aperture antennas; Bandwidth; Loss measurement; Microstrip antenna arrays; Microstrip antennas; Silicon; Slot antennas;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
