Title :
Excitation of leaky-wave antenna loaded with periodical strips
Author :
Da-zhong, Wann ; Chang-sheng, Shi ; Guo-ding, Li
Author_Institution :
Dept. of Inf. & Electron., Tsinghua Univ., Beijing, China
Abstract :
Recent research on a leaky-wave antenna loaded with periodical strips has shown that its sidelobe far away from main beam is high. In the present work, it is shown that this is caused by the radiation of the antenna exciter. The related harmonic transmittivity is derived along with a spectral domain expression for the field generated by the antenna excited by line current or waveguide. Then the saddle point method is used to calculate the far field. Computed results are shown to be in very good agreement with experimental measurements.<>
Keywords :
antenna theory; dielectric-loaded antennas; waveguide antennas; antenna exciter; experimental measurements; far field; harmonic transmittivity; leaky-wave antenna; line current; periodical strips loaded; saddle point method; sidelobe; spectral domain expression; waveguide; Antenna measurements; Dielectrics; Electromagnetic scattering; Electromagnetic waveguides; Geometry; Leaky wave antennas; Millimeter wave measurements; Millimeter wave technology; Slabs; Surface waves;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1989. AP-S. Digest
Conference_Location :
San Jose, CA, USA
DOI :
10.1109/APS.1989.135004
