Title :
Microstrip array antenna for suppression of cross polarization
Author :
Egashira, Kozo ; Nishiyama, Eisuke ; Aikawa, Masayoshi
Author_Institution :
Fac. of Sci. & Eng., Saga Univ., Japan
Abstract :
This work proposes a novel configuration of microstrip array antenna with very low cross polarization. The feed circuits are composed of microstrip lines on a surface and slot lines on the reverse side of a dielectric substrate. It is clarified that the array antenna proposed here is very successful for the suppression of cross polarization. A microstrip array antenna with 4-elements is designed. The directivity is measured, and it is confirmed that the array antenna has an excellent suppression of the cross polarization, that is, better than -30 dB in all directions.
Keywords :
antenna feeds; electromagnetic wave polarisation; impedance matching; microstrip antenna arrays; microstrip lines; slot lines; antenna directivity; cross polarization suppression; double-sided MIC circuits; microstrip array antenna; microstrip line feed circuit; slot line feed circuit; Antenna arrays; Antenna measurements; Circuits; Dielectric measurements; Dielectric substrates; Directive antennas; Feeds; Microstrip antenna arrays; Microstrip antennas; Polarization;
Conference_Titel :
Computational Electromagnetics and Its Applications, 2004. Proceedings. ICCEA 2004. 2004 3rd International Conference on
Print_ISBN :
0-7803-8562-4
DOI :
10.1109/ICCEA.2004.1459334
