Broadband Circularly Polarized Cavity-Backed Slot Antenna Array With Four Linearly Polarized Disks Located in a Single Circular Slot

Author

Hu, Yong-Jin ; Ding, Wei-Ping ; Ni, Wei-Min ; Cao, Wen-Quan

Author_Institution

Inst. of Commun. Eng., PLA Univ. of Sci. & Technol., Nanjing, China

Volume

11

fYear

2012

fDate

7/4/1905 12:00:00 AM

Firstpage

496

Lastpage

499

Abstract

A novel cavity-backed slot antenna array with broadband circularly polarized (CP) property is presented in this letter. A corporate feed network composed of three Wilkinson power dividers is applied to sequentially rotated feed four linearly polarized disks that are located in a cavity-backed circular slot. The measured 3-dB axial-ratio (AR) bandwidth of the array is 54.5%, and the 10-dB return loss bandwidth is 92.1%. The 3-dB gain bandwidth is about 50.8% with the peak gain 9.9 dBic.

Keywords

broadband antennas; power dividers; slot antenna arrays; Wilkinson power dividers; broadband antenna array; cavity-backed slot antenna array; circularly polarized antenna array; corporate feed network; gain 3 dB; linearly polarized disks; loss 10 dB; single circular slot; Antenna arrays; Antenna measurements; Arrays; Bandwidth; Broadband antennas; Feeds; Slot antennas; Broadband antennas; cavity-backed antennas; circular polarization; slot antennas;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2012.2197811

Filename

6194987