TY - JOUR
T1 - Dual-band circularly-polarized CPW-fed slot antenna with a small frequency ratio and wide bandwidths
AU - Chen, Can-Hui
AU - Yung, E. K N
PY - 2011/4
Y1 - 2011/4
N2 - 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. © 2006 IEEE.
AB - 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. © 2006 IEEE.
KW - Circular polarization
KW - coplanar waveguide (CPW)-fed
KW - dual-band
KW - slot antenna
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U2 - 10.1109/TAP.2011.2109347
DO - 10.1109/TAP.2011.2109347
M3 - RGC 21 - Publication in refereed journal
SN - 0018-926X
VL - 59
SP - 1379
EP - 1384
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 4
M1 - 5704177
ER -