A novel wideband planar quasi-yagi antenna loading with parasitical patches and multiple reflectors

IEICE Electronics Express

Jinchun Gao¹  Linglong Meng¹  Rui Ji¹  Yuanan Liu¹  Weimin Wang¹ 

[1] Beijing Key Laboratory of Work Safety Intelligent Monitoring, School of Electronic Engineering, Beijing University of Posts and Telecommunications

关键词: wideband;    end-fire;    gain;    parasitic strip;    monopole antenna;    coupling;   

DOI  :  10.1587/elex.14.20170681

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

In this paper, a novel wideband microstrip-fed quasi-Yagi antenna is presented. The proposed quasi-Yagi antenna consists of a microstrip-fed monopole, three radiating patches (two square patches and a rectangular patch), and three parasitic strip elements as the function of reflector. In order to achieve wide bandwidth, two parasitical patches are etched on both sides of the substrate. Furthermore, the stepped microstrip feeding line is adopted so as to get a good impedance matching. A fabricated prototype with the dimensions of 40 mm × 55.5 mm yields a directional far-field radiation pattern with no director, a −10 dB bandwidth (2.21–5.4 GHz) of 83.8% and a peak radiation gain of 4.17 dBi. Finally, the proposed antenna is analyzed, fabricated and measured. Measured and simulated results are in good agreement.

【 授权许可】

CC BY