A Novel Design of Low-Profile Dual-Band Circularly Polarized Antenna With Meta-Surface

Author

Ke Li ; Long Li ; Yuan-Ming Cai ; Cheng Zhu ; Chang-Hong Liang

Author_Institution

Nat. Lab. of Sci. & Technol. on Antennas & Microwaves, Xidian Univ., Xi´an, China

Volume

14

fYear

2015

fDate

7/7/1905 12:00:00 AM

Firstpage

1650

Lastpage

1653

Abstract

A low-profile dual-band circularly polarized (CP) antenna applied for WiMAX (2.5 and 3.5 GHz) is proposed in this letter. With a well-designed meta-surface placed atop a slot antenna, two circularly polarized bands can be excited. The annular folded slot antenna resonates at 2.5 GHz while the meta-surface is designed to excite another CP band around 3.5 GHz, and the meta-surface can also effectively enhance the front radiation. Two CP operation bands are 2.48-2.56 GHz and 3.48-3.63 GHz, with the low frequency ratio (FR) of 1.4 (2.5 GHz/3.5 GHz). The antenna is compact with a low profile of 3 mm, which can be easily integrated in the wireless communication system.

Keywords

WiMax; antenna radiation patterns; electromagnetic wave polarisation; microwave antennas; multifrequency antennas; slot antennas; WiMax; annular folded slot antenna; dual band circularly polarized antenna; frequency 2.48 GHz to 2.56 GHz; frequency 2.5 GHz; frequency 3.48 GHz to 3.63 GHz; frequency 3.5 GHz; front radiation enhancement; meta surface; wireless communication system; Antenna measurements; Antenna radiation patterns; Dipole antennas; Dual band; Slot antennas; Circularly polarized (CP); dual-band; low profile; meta-surface;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2015.2417169

Filename

7069274