Title :
Dual-polarized linear series-fed microstrip arrays with very low losses and cross polarization
Author :
Vallecchi, Andrea ; Gentili, Guido Biffi
Author_Institution :
Dept. of Electron. & Telecommun., Florence Univ., Italy
Abstract :
The design of a microstrip series-fed linear traveling-wave array is described in this paper. The array is composed of two symmetric subarrays formed by cascading an equal number of four-port aperture-coupled cross-patch elements and terminated on a two-port radiating matched load. Dual-linear and circular polarization can be achieved by appropriately exciting the array and by virtue of the symmetric arrangement of the antenna high polarization purity is obtained. A proof-of-concept linear array is developed and the corresponding numerical results performed through a full-wave approach based on the method of moments are presented.
Keywords :
antenna feeds; antenna theory; aperture antennas; electromagnetic wave polarisation; impedance matching; linear antenna arrays; method of moments; microstrip antenna arrays; aperture-coupled cross-patch elements; circular polarization; cross polarization; dual-polarized microstrip arrays; four-port cross-patch elements; full-wave approach; linear polarization; linear series-fed microstrip arrays; losses; method of moments; polarization purity; symmetric subarrays; traveling-wave array; two-port radiating matched load;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2004.830022