Dual-Band Circularly-Polarized CPW-Fed Slot Antenna With a Small Frequency Ratio and Wide Bandwidths

Autor:	Can-Hui Chen, Edward K. N. Yung
Rok vydání:	2011
Předmět:	Physics Optics business.industry Axial ratio Slot antenna Antenna factor Multi-band device Electrical and Electronic Engineering Antenna (radio) business Monopole antenna Ground plane Radiation pattern
Zdroj:	IEEE Transactions on Antennas and Propagation. 59:1379-1384
ISSN:	1558-2221 0018-926X
DOI:	10.1109/tap.2011.2109347
Popis:	A novel dual-band circularly-polarized (CP) CPW-fed slot antenna is proposed in this communication. This antenna characterizes a small frequency ratio and wide CP bandwidths. The dual-band operations are realized by using two parallel monopoles, one curved monopole and one fork-shaped monopole. In addition, a crane-shaped strip is placed in the ground plane to achieve circular polarization. The experimental results show that the antenna has the axial ratio bandwidths of 9% for the lower band and 11% for the upper band. Both bands are left handed. The frequency ratio of the upper band to the lower band is 1.286 (1.98 GHz/1.54 GHz). Other characteristics such as impedance bandwidths, radiation patterns and gains will also be presented.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f32469a0fda7de6867acbeec4a62a78e https://doi.org/10.1109/tap.2011.2109347 Zobrazit plný text záznamu