A CPW-fed circular wide-slot UWB antenna with wide tunable and flexible reconfigurable dual notch bands.
A coplanar waveguide (CPW)-fed circular slot antenna with wide tunable dual band-notched function and frequency reconfigurable characteristic is designed, and its performance is verified experimentally for ultra-wideband (UWB) communication applications. The dual band-notched function is achieved by using a T-shaped stepped impedance resonator (T-SIR) inserted inside the circular ring radiation patch and by etching a parallel stub loaded resonator (PSLR) in the CPW transmission line, while the wide tunable bands can be implemented by adjusting the dimensions of the T-SIR and the PSLR. The notch band reconfigurable characteristic is realized by integrating three switches into the T-SIR and the PSLR. The numerical and experimental results show that the proposed antenna has a wide bandwidth ranging from 2.7 GHz to 12 GHz with voltage standing wave ratio (VSWR) less than 2, except for the two notch bands operating at 3.8-5.9 GHz and 7.7-9.2 GHz, respectively. In addition, the proposed antenna has been optimized to a compact size and can provide omnidirectional radiation patterns, which are suitable for UWB communication applications.
College of Information and Communications Engineering, Harbin Engineering University, Harbin, Heilongjiang 150001, China.
Yingsong
Y
Li
Wenxing
W
Li
Qiubo
Q
Ye
D011845:Radio / Q000295:instrumentation*; D011846:Radio Waves; D059015:Wireless Technology / Q000295:instrumentation