Wideband Fabry–Perot Resonator Antenna With Two Layers of Dielectric Superstrates

Author

Naizhi Wang ; Jianzhou Li ; Gao Wei ; Talbi, Larbi ; Qingsheng Zeng ; Jiadong Xu

Author_Institution

Sch. of Electron. & Inf., Northwestern Polytech. Univ., Xi´an, China

Volume

14

fYear

2015

fDate

2015

Firstpage

229

Lastpage

232

Abstract

This letter presents a new design of a Fabry-Perot resonator antenna (FPRA) with a wide gain bandwidth. A double-layered dielectric superstrate, which produces a reflection phase curve versus frequency with a positive slope, is used as a partially reflective surface (PRS) to enhance the bandwidth of the FPRA. For a physical insight, the PRS is analyzed by using the transmission line theory and Smith Chart. Experimental results demonstrate that the antenna has a 3-dB gain bandwidth over 13.5-17.5 GHz, relatively 25.8%, with a peak gain of 15 dBi. Furthermore, the gain band is overlapped well by the impedance band for the reflection coefficient ( S11) less than -10 dB.

Keywords

Fabry-Perot resonators; dielectric resonator antennas; electromagnetic wave reflection; microwave antennas; transmission line theory; FPRA; PRS; Smith chart; bandwidth 13.5 GHz to 17.5 GHz; double-layered dielectric superstrate; gain 3 dB; partially reflective surface; reflection phase curve; transmission line theory; wideband Fabry-Perot resonator antenna; Antenna feeds; Broadband antennas; Gain; Impedance; Reflection; Wideband; Fabry–Perot resonator antennas; high gain; partially reflective surface; wide band;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2014.2360703

Filename

6912997