Title :
Beam correction in a dual-band dual-polarised shared aperture patch antenna
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
Design and results of a dual-aperture coupled rectangular microstrip patch antenna element, suitable for portable ultra small aperture terminals (USATs), are presented The dual-band dual-polarised antenna element achieves 21% input impedance bandwidth at S- and C-bands. Beam squinting problem is rectified with a tread off between isolation and coupling slot´s position closer to the patch center. The new antenna yields broadside radiation patterns and high isolation > 30 dB and a gain > 7 dBi over S- and C-band frequencies.
Keywords :
S-parameters; antenna radiation patterns; aperture antennas; broadband antennas; microstrip antennas; multifrequency antennas; satellite ground stations; S-parameter; VSAT terminal; beam correction; beam squinting problem; broadside radiation patterns; dual-aperture coupled antenna; dual-band dual-polarised antenna; high isolation; input impedance bandwidth; orthogonal feed antenna; portable ultrasmall aperture terminals; rectangular microstrip patch antenna; Antenna radiation patterns; Aperture antennas; Aperture coupled antennas; Bandwidth; Dual band; Gain; Impedance; Microstrip antennas; Optical coupling; Patch antennas;
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.2003.1220332
