International Journal of Antennas and Propagation (Jan 2022)

A Miniaturized Wideband Planar Bow-Tie Slot Antenna with Asymmetric CPW

  • Xi Chen,
  • Jiasong Huang,
  • Chonghu Cheng,
  • Leilei Liu

DOI
https://doi.org/10.1155/2022/6886342
Journal volume & issue
Vol. 2022

Abstract

Read online

In this paper, a novel miniaturized wideband planar bow-tie slot antenna is proposed. For the purpose of miniaturization and wide bandwidth, the effects of the dimension and shape of the bow-tie slot and feed structure are analyzed. This antenna adopts a water droplet slot, fed by an optimized asymmetric coplanar waveguide (CPW). By adjusting the feeding line, the impedance characteristic of the antenna is greatly improved that leads to a broader bandwidth. The proposed antenna operates from 2.8 GHz to 5.25 GHz with a gain of 3.8 dB. Compared with the traditional triangle bow-tie antenna, the relative bandwidth of the proposed antenna is broadened to more than 61%, while the size is reduced by about 36%, which indicates the proposed antenna is suitable for a variety of wireless applications.