Title :
A reconfigurable circularly polarized embedded PICA
Author :
Soh, H.M. ; Karim, M.F. ; Ong, L.C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore (NUS), Singapore, Singapore
Abstract :
In this paper, a circularly polarized reconfigurable planar inverted cone antenna (PICA) is designed, fabricated and tested. Generally, PICA antenna shows wider-bandwidth and linear polarization characteristics. However, in order to generate circular polarization, asymmetrical types of two unbalanced circular slots are etched on PICA at angle of 45°. Parametric study is done to determine the optimal dimensions of the slots. The varactor diodes (SMV1232-079LF) are placed on both sides of the PICA to enable the tenability aspects of the antenna. The measurement results show 10dB impedance bandwidth from 2GHz-9GHz at 0V. However, when the diode voltage varies from 1V to 12V, the 10dB impedance bandwidth reduces to 2GHz-4.5GHz.
Keywords :
UHF antennas; microwave antennas; planar antennas; varactors; PICA antenna; SMV1232-079LF; antenna tenability aspects; diode voltage; frequency 2 GHz to 9 GHz; impedance bandwidth; linear polarization characteristics; optimal slot dimension; parametric study; planar inverted cone antenna; reconfigurable circularly-polarized embedded PICA; unbalanced circular slots; varactor diodes; voltage 1 V to 12 V; Bandwidth; Broadband antennas; Capacitance; Impedance; Microstrip;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2013 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4673-5315-1
DOI :
10.1109/APS.2013.6710664
