Title :
2-D periodic leaky-wave antennas-part I: metal patch design
Author :
Zhao, Tianxia ; Jackson, David R. ; Williams, Jeffery T. ; Yang, Hung-Yu David ; Oliner, Arthur A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Houston, TX, USA
Abstract :
The far-field radiation characteristics of a two-dimensional (2-D) periodic leaky-wave antenna (LWA) constructed from a periodic array of metal patches on a grounded dielectric substrate is investigated. A simple dipole source is used as the excitation. Reciprocity together with a periodic spectral-domain method of moments is used to calculate the far-field pattern. Design rules for the scan angle, the substrate dielectric constant, and the periodicity are provided. Finally, a comparison of the 2-D periodic LWA and a dielectric-layer LWA is given to show the similar performance of the two antennas.
Keywords :
antenna radiation patterns; antenna theory; dipole antenna arrays; leaky wave antennas; method of moments; microstrip antenna arrays; periodic structures; permittivity; scanning antennas; spectral-domain analysis; substrates; LWA; dipole source; far-field radiation pattern; metal patch design; method of moment; spectral-domain method; substrate dielectric constant; two-dimensional periodic leaky-wave antenna array; Antenna arrays; Antennas and propagation; Dielectric substrates; Dipole antennas; Frequency; Leaky wave antennas; Microstrip antennas; Moment methods; Periodic structures; Two dimensional displays; Leaky wave; leaky-wave antenna (LWA); patches;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2005.858579
