Broadband Millimeter-Wave Short Backfire Antenna With Bowtie Exciter

Author

Qu, Shi-Wei

Author_Institution

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

Volume

11

fYear

2012

fDate

7/4/1905 12:00:00 AM

Firstpage

850

Lastpage

853

Abstract

A broadband millimeter-wave short backfire antenna with a rounded bowtie exciter is reported in this letter. Simulations and measurements show that the bowtie exciter can provide good illumination to a large antenna aperture, and the elliptical composite cavity can enhance the operating bandwidth to the most extent. Investigations show that the antenna can present a bandwidth from 27.6 to 42.5 GHz for -10-dB sidelobe level (SLL), from 27.6 to over 50 GHz for standing-wave ratio (SWR) ≤ 2, and a broadside gain of 14.3 ~ 18.2 dBi. Electric field distributions over the antenna aperture are given to clearly show its operating principles. Studies on six critical parameters are performed for practical designs.

Keywords

broadband antennas; millimetre wave antennas; bowtie exciter; broadband millimeter-wave short backfire antenna; electric field distributions; elliptical composite cavity; frequency 27.6 GHz to 42.5 GHz; frequency 50 GHz; large antenna aperture; standing-wave ratio; Antenna measurements; Bandwidth; Broadband antennas; Cavity resonators; Gain; Backfire antennas; broadband antennas; cavity-backed antennas; millimeter wave;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2012.2209861

Filename

6247460