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

fYear

2012

fDate

18-20 July 2012

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Systems, Networks & Digital Signal Processing (CSNDSP), 2012 8th International Symposium on

Conference_Location

Poznan

Print_ISBN

978-1-4577-1472-6

Type

conf

DOI

10.1109/CSNDSP.2012.6292639

Filename

6292639