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http://dx.doi.org/10.6109/jkiice.2017.21.2.252

Design of Double Dipole Quasi-Yagi Antenna with enhanced bandwidth and gain  

Yeo, Junho (School of Computer and Communication Engineering, Daegu University)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.21, no.2, 2017 , pp. 252-258 More about this Journal
Abstract
In this paper, the bandwidth and gain enhancement of a double-dipole quasi-Yagi antenna (DDQYA) using a modified balun and two directors is studied. The proposed DDQYA consists of two strip dipoles with different lengths, a ground reflector, which are connected through a coplanar strip line, and two directors. The modified balun is used to increase the bandwidth, whereas two directors are appended to the DDQYA to enhance the gain in the middle and high frequency band. The effects of the length and width of the first director on the antenna performance are analyzed, and final design parameters to obtain a gain over 7 dBi at 1.60-2.90 GHz band are obtained. A prototype of the proposed DDQYA is fabricated on an FR4 substrate, and the experimental results show that the antenna has a frequency band of 1.57-3.00 GHz for a VSWR < 2, and measured gain ranges 7.1-7.8 dBi at 1.60-2.90 GHz band.
Keywords
double dipole quasi-Yagi antenna; modified balun; directors; enhanced bandwidth and gain;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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