An Extremely Low-Profile Ferrite-Loaded Wideband VHF Antenna Design

Author

Moon, Haksu ; Lee, Gil-Young ; Chen, Chi-Chih ; Volakis, John L.

Author_Institution

Electr. & Comput. Eng. Dept., Ohio State Univ., Columbus, OH, USA

Volume

11

fYear

2012

fDate

7/4/1905 12:00:00 AM

Firstpage

322

Lastpage

325

Abstract

A novel, very low-profile wideband antenna operating from 30 to 300 MHz is presented. The maximum diameter and height of this antenna is only 60.96 and 5.08 cm, respectively. This design is composed of a fat grounded metallic plate placed 5.08 cm over a ground plane. Several ferrite bars strategically placed between the plate and ground plane play a critical role in improving the low frequencies gain and pattern at high frequencies. Minimal amount of ferrite was used to keep the antenna´s weight below 9.07 kg. Several antenna prototypes were fabricated and tested at an outdoor range with their gain and patterns agreeing well with simulation results.

Keywords

UHF antennas; VHF antennas; antenna radiation patterns; broadband antennas; ferrite devices; extremely low-profile ferrite-loaded wideband VHF antenna design; fat grounded metallic plate; ferrite bars; frequency 30 MHz to 300 MHz; ground plane; size 5.08 cm; size 60.96 cm; Antenna measurements; Broadband antennas; Ferrites; Loading; Wideband; Antennas; VHF antennas; ultrawideband antennas;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2012.2191131

Filename

6170539