Flexible CPW-Fed Fishtail-Shaped Antenna for Dual-Band Applications

作者：Liu Haiwen^*; Zhu Shuangshuang; Wen Pin; Xiao Xiang; Che Wenquan; Guan Xuehui

来源：IEEE Antennas and Wireless Propagation Letters, 2014, 13: 770-773.

DOI：10.1109/LAWP.2014.2317746

• Coplanar waveguide (CPW)-fed
• dual-band
• fishtail-shaped patch
• flexible antenna

A flexible fishtail-shaped antenna for WiMAX and X-band applications is presented in this letter. The proposed antenna is fed by a coplanar waveguide (CPW). Stepped-impedance lines that can provide smooth transitional impedance for improved impedance matching and broadband characteristics are also introduced. The antenna is printed on a 0.127-mm polytetrafluoroethene (PTFE) substrate and occupies a size of 25 x 50 mm(2). In the lower frequency band, the measured impedance bandwidth for vertical bar S-11 vertical bar <= -10 dB is about 200 MHz from 3.4 to 3.6 GHz, while it is about 7 GHz from 7.4 to 14.4 GHz in the upper frequency band. In addition, the antenna demonstrates a low sensitivity to performance degradation due to bending effects, which makes it suitable for integration within portable devices.

• 出版日期2014