Monofilar Spiral Slot Antenna for Dual-Frequency Dual-Sense Circular Polarization

TitleMonofilar Spiral Slot Antenna for Dual-Frequency Dual-Sense Circular Polarization
Publication TypeJournal Article
Year of Publication2011
AuthorsX. L. Bao, and M. J. Ammann
Journal TitleIEEE Transactions on Antennas & Propagation
Volume59
Issue8
Pagination3061-3065
Journal Date08/2011
Abstract

A dual-band antenna with right-hand circular polarization for the first frequency and the counter polarization at the second frequency is realized with compact printed spiral slots. The coupled spiral slots are fed by a 50 Ω microstrip line. Dual-sense circularly-polarized performance is achieved by realizing oppositely-directed current rotation for the two frequency bands. A parametric study shows that the additional slot significantly improves the bandwidth for both frequency bands. Measured results show that the fractional impedance bandwidth is greater than 18% for both bands. The 3 dB axial-ratio bandwidths are 4.5% and 3.5% for the RHCP and LHCP bands, respectively.

Notes

https://www.researchgate.net/publication/224240832_Monofilar_Spiral_Slot...

URLhttp://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5871273
DOI10.1109/TAP.2011.2158964
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