W-band microstrip reflectarray with double-cross element for bandwidth improvement

Author

Ji Hwan Yoon ; Young Joong Yoon ; Woo-sang Lee ; Joon-Ho So

Author_Institution

Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea

fYear

2015

fDate

25-27 May 2015

Firstpage

1

Lastpage

3

Abstract

A broadband microstrip reflectarray is designed with the proposed element at W-band. The element consists of two cross-shaped resonators. Based on the analysis on the resonance mechanism of the double-cross element, the reflection phase of the element is controlled to achieve broadband characteristics by adjusting the dimensions of the element. Using the proposed element, a reflectarray with diameter of 50 mm is designed at f₀ = 95 GHz. At f = f₀, the peak gain of 31.73 dBi is achieved with aperture efficiency of 66.1%. Also, 1-dB gain bandwidth of 15.9% is achieved at W-band.

Keywords

broadband antennas; microstrip antenna arrays; microwave antenna arrays; reflectarray antennas; resonators; W-band microstrip reflectarray; bandwidth improvement; broadband microstrip reflectarray; cross-shaped resonators; double-cross element; frequency 95 GHz; gain 1 dB; gain 31.73 dB; resonance mechanism; size 50 mm; Bandwidth; Broadband antennas; Broadband communication; Electric fields; Microstrip; Reflection; Reflector antennas; Broadband; Reflectarray; Reflector; W-band;

fLanguage

English

Publisher

ieee

Conference_Titel

Millimeter Waves (GSMM), 2015 Global Symposium On

Conference_Location

Montreal, QC

Type

conf

DOI

10.1109/GSMM.2015.7175110

Filename

7175110