Novel Multiport Cavity-Backed Antenna for Low-Cost Array Applications

Author

Qi Jiang ; Shi-Wei Qu

Author_Institution

Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

14

fYear

2015

fDate

2015

Firstpage

1419

Lastpage

1422

Abstract

In this letter, a novel three-element linear cavity- backed antenna (CBA) array with high aperture efficiency is proposed. First, in order to reduce the loss and cost caused by the feeding network, a multiport CBA acting as a radiator as well as a power divider is investigated. Then, based on the multiport CBA, a three-element antenna array with a wide operating frequency band (19-21 GHz) is designed. The simulated broadside gain is from 9.7 to 11.1 dBi over the whole operating band, and the aperture efficiency of the proposed CBA array ranges from 99.1% to 123.7%. The proposed idea has potential applications in low-cost antenna arrays due to the simplified feeding network.

Keywords

aperture antennas; linear antenna arrays; microwave antenna arrays; frequency 19 GHz to 21 GHz; high aperture efficiency; low-cost array applications; multiport CBA; novel multiport cavity-backed antenna; novel three-element linear cavity- backed antenna array; power divider; simplified feeding network; Antenna arrays; Apertures; Arrays; Dipole antennas; Gain; Power dividers; Cavity-backed antennas (CBAs); coupling strips; high aperture efficiency; power dividers;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2015.2410033

Filename

7054458