Title :
Meandering long slot leaky-wave waveguide-antennas
Author :
Whetten, Frank L. ; Balanis, Constantine A.
Author_Institution :
Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA
fDate :
11/1/1991 12:00:00 AM
Abstract :
A theoretical study is made of the aperture field distributions, the far-field amplitude patterns, and the mutual coupling characteristics of several long leaky-wave slot antennas cut on the broadwall of a rectangular waveguide mounted in an infinite ground plane. Straight long slots have high inner sidelobes in the far-field amplitude patterns, which reduces their utility as high-performance antennas. To reduce these sidelobes, a long slot may be meandered from waveguide centerline to sidewall and back to centerline in such a way to produce the desired radiation patterns. Calculated results for antennas of several meander patterns are presented and discussed
Keywords :
antenna radiation patterns; rectangular waveguides; waveguide antennas; aperture field distributions; far-field amplitude patterns; infinite ground plane; long leaky-wave slot antennas; meander patterns; mutual coupling; rectangular waveguide; sidelobes; waveguide-antennas; Antenna theory; Aperture antennas; Aperture coupled antennas; Integral equations; Lighting; Performance analysis; Planar waveguides; Rectangular waveguides; Slot antennas; Waveguide theory;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
