Title :
Effects of mutual coupling in a high fidelity, circularly polarized, probe-fed, two-element pentagonal patch array
Author :
Natarajan, V. ; Chatterjee, D.
Author_Institution :
Electr. & Comput. Eng. Dept., Missouri Univ., Kansas City, MO, USA
Abstract :
The paper examines spatial and frequency variations of mutual coupling on the axial ratio in a two-element, circularly polarized, probe-fed array of pentagonal patches designed on infinite-grounded dielectric (/spl epsiv//sub r/=2.2 and 4.5) substrates having a 0.4 dB axial ratio at 2.24 GHz. The results for changes in the 3 dB axial ratio bandwidth with increase in substrate permittivity are emphasized and are included along with results quantifying the effects of increased spatial variations on the same parameter.
Keywords :
UHF antennas; electromagnetic coupling; electromagnetic wave polarisation; microstrip antenna arrays; permittivity; satellite communication; substrates; 2.24 GHz; axial ratio; circularly polarized array; frequency variations; infinite-grounded dielectric substrates; mutual coupling; pentagonal patch array; probe-fed array; spatial variations; substrate permittivity; two-element array; Bandwidth; Degradation; Dielectric substrates; Frequency; Microstrip antennas; Mutual coupling; Permittivity; Phased arrays; Polarization; Surface waves;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2003. IEEE
Conference_Location :
Columbus, OH, USA
Print_ISBN :
0-7803-7846-6
DOI :
10.1109/APS.2003.1217528
