Title :
An H/sup +/-plane Tee leaky-wave antenna
Author :
Narayanan, K.K. ; Mohanan, P. ; Vasudeyan, K. ; Nair, K.G.
Author_Institution :
Dept. of Electron., Cochin Univ. of Sci. & Technol., India
Abstract :
A center-fed strip-loaded rectangular dielectric rod leaky-wave antenna is fabricated in such a way that the junction at the feed point appears as an H-plane Tee. Experimental studies on the H-plane Tee leaky-wave antenna with regularly spaced and AP (arithmetic progression)-spaced perturbations have been conducted. It is found that, in both cases, square radiation patterns with large beamwidth, low ripple amplitude, and sharp cut-off are obtained. Higher beamwidth and lower ripple amplitude are observed in the case of AP-spaced perturbations. These antennas may find application as feeds for deep cylindrical parabolic reflectors, where uniform aperture illumination with low spill-over is needed.<>
Keywords :
antenna feeders; dielectric-loaded antennas; microstrip antennas; H-plane Tee; beamwidth; center fed antenna; deep cylindrical parabolic reflectors; leaky-wave antenna; low ripple amplitude; low spill-over; rectangular dielectric rod antenna; square radiation patterns; strip loaded antenna; uniform aperture illumination; Antenna feeds; Antenna radiation patterns; Antennas and propagation; Arithmetic; Dielectrics; Frequency; Leaky wave antennas; Linear antenna arrays; Millimeter wave technology; Pattern analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1991. AP-S. Digest
Conference_Location :
London, Ontario, Canada
Print_ISBN :
0-7803-0144-7
DOI :
10.1109/APS.1991.175220
