Title :
A broadband planar quasi-Yagi antenna with X-shaped driven elements
Author :
Qin, Fan ; Gao, Yao ; Wei, Gao ; Xu, Jiadong
Author_Institution :
Sch. of Electron. & Inf., Northwestern Polytech. Univ., Xi´´an, China
Abstract :
In this paper, a novel wideband planar quasi-Yagi antenna with x-shaped elements is presented. Good impedance matching and mode transforming are realized by using an exponentialy tapered microstrip balun. This quasi-Yagi antenna is designed on FR-4 substrate whose dielectric constant is 4.4 and the thickness is 1.6 mm. Prototype antennas have been fabricated and measured. Experimental results show that the 10 dB return loss bandwidth of this antenna is 48% operating from 4.7 GHz to 7.6 GHz and the gain is higher than 6.2 dB.
Keywords :
Yagi antenna arrays; baluns; broadband antennas; impedance matching; microstrip antenna arrays; permittivity; planar antenna arrays; FR-4 substrate; X-shaped driven elements; broadband planar quasiYagi antenna; dielectric constant; exponentialy tapered microstrip balun; frequency 4.7 GHz to 7.6 GHz; impedance matching; loss 10 dB; return loss bandwidth; size 1.6 mm; wideband planar quasiYagi antenna; Antenna measurements; Broadband antennas; Dipole antennas; Feeds; Impedance matching; Microstrip;
Conference_Titel :
Communication Systems, Networks & Digital Signal Processing (CSNDSP), 2012 8th International Symposium on
Conference_Location :
Poznan
Print_ISBN :
978-1-4577-1472-6
DOI :
10.1109/CSNDSP.2012.6292639
