Title :
A high efficiency L-band microstrip antenna
Author :
Faiz, M.M. ; Wahid, P.F.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Central Florida, Orlando, FL, USA
Abstract :
The design of a high efficiency circularly polarized nearly square patch antenna at L-band is presented. One way to improve the efficiency of the inherently low efficiency microstrip antennas is to use substrates with a low permittivity. A low permittivity substrate with /spl epsi//sub r/=1.1028 was obtained by using a combination of Rogers RT/Duroid 5880 and Rohacell hard foam. The effect of a 5 mils thick Rogers RT/Duroid 5880 superstrate on the efficiency was also studied. Results of the antenna efficiency and bandwidth for both the low dielectric substrate and superstrate are presented. The results were obtained using the 1E3D software package and compared with measured results. Efficiencies of the order of 85% for a single patch element were obtained.
Keywords :
UHF antennas; antenna accessories; electromagnetic wave polarisation; microstrip antennas; 1 GHz; 1E3D software package; Rogers RT/Duroid 5880; Rohacell hard foam; bandwidth; circularly polarized nearly square patch antenna; high efficiency L-band microstrip antenna; permittivity; substrates; superstrate; Antenna measurements; Bandwidth; Dielectric measurements; Dielectric substrates; L-band; Microstrip antennas; Patch antennas; Permittivity; Polarization; Software packages;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1999. IEEE
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-5639-x
DOI :
10.1109/APS.1999.789133
