Reconfigurable dipole antenna array with shared parasitic elements for 360° beam steering. Issue 12 (10th September 2020)

• Record Type: Journal Article
• Authors: Chang, Yu‐Lin; Chu, Qing‐Xin; Li, Yixin
• Is Part Of: International journal of RF and microwave computer-aided engineering. Volume 30:Issue 12(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-09-10
• Subjects: beam steering -- beam switchable -- dipole antenna -- reconfigurable antenna -- Yagi‐Uda antenna; Microwave devices -- Computer-aided design -- Periodicals; Computer-aided engineering -- Periodicals; 621.3813
• DOI: 10.1002/mmce.22435
• Languages: English
• ISSNs: 1096-4290

Abstract

Abstract: Different from the traditional reconfigurable antennas, in which PIN diodes are just used as switches, a novel method for achieving the reactance tuning is proposed, in which the impedance characteristics of the PIN diode in different working states are used to realize elements sharing. The mechanism of element sharing is explained by mathematical analysis, firstly. Then, the novel method of realizing element sharing based on the impedance characteristics of PIN diode is explained. By this way, reactance tuning can be easily achieved using PIN diode. Finally, a 360° beam switchable dipole antenna array is designed to illustrate the feasibility of the proposed method. The results show that gains of 7.8 dBi, and FBRs (front‐to‐back ratios) of greater than 19 dB are achieved by the proposed antenna. In particular, the maximum gain drop of the proposed antenna is less than 0.72 dB when switching between different working modes.