Abstract
In this study, we develop a pattern-reconfigurable dual-band 1 × 2 dipole antenna array for operation in 2.45- and 5.5-GHz bands. Parasitic directors are added to the antenna to change the shape of the radiation pattern, and the length of parasitic directors are adjusted using diode switches; therefore, each band can switch four beams in 0° (front broadside), 90° (right endfire), 180° (back broadside), and 270° (left endfire) directions to achieve full coverage in the horizontal plane. For demonstration, one prototype of the proposed pattern-reconfigurable dual-band dipole antenna array was fabricated and measured. Measured results indicated that dual-band operation was achieved with the maximum impedance bandwidths of 30.8% and 46% in 2.45- and 5.5-GHz bands, respectively. Four switchable beams were obtained with a maximum gain of 5.3 dBi and a front-to-back ratio up to 17.3 dB.
| Original language | English |
|---|---|
| Pages (from-to) | 21-32 |
| Number of pages | 12 |
| Journal | IET Microwaves, Antennas and Propagation |
| Volume | 15 |
| Issue number | 1 |
| DOIs | |
| State | Published - 08 01 2021 |
Bibliographical note
Publisher Copyright:© 2020 The Authors. IET Microwaves, Antennas & Propagation published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology.