A Broadband Dual-Element Folded Dipole Antenna With a Reflector

作者：Wang, Zedong^*; Wu, Jianjun; Yin, Yingzeng; Liu, Xianglong

来源：IEEE Antennas and Wireless Propagation Letters, 2014, 13: 750-753.

DOI：10.1109/LAWP.2014.2315836

• Dual-element folded dipole
• flat gain
• microstrip feedline
• wideband

A wideband dual-element planar folded dipole antenna is proposed in this letter. It is composed of a pair of asymmetric coplanar strip folded dipoles. The dual-element folded dipole antenna is fed by a microstrip feedline. With suitable design of the asymmetric coplanar strip folded dipole and the microstrip feedline, a 10-dB return-loss operating bandwidth of 107% (1.23 similar to 4.07 GHz) is achieved. By adding a metal plate, a wideband unidirectional antenna can be obtained with a measured impedance bandwidth of 113% (1.15 similar to 4.07 GHz) with better than 10 dB return loss. Its fabricated prototype is also measured with stable unidirectional radiation patterns in working band 1.13 similar to 3.3 GHz with a gain in +z-direction higher than 8.2 dBi and a front-to-back ratio better than 11.5 dB.

• 出版日期2014
• 单位西安电子科技大学