Design and Realization of a GA-Optimized VHF/UHF Antenna With "On-Body" Matching Network

Author

Ding, Xiao ; Wang, Bing-Zhong ; Zheng, Gang ; Li, Xiao-Ming

Author_Institution

Inst. of Appl. Phys., Univ. of Electron. & Sci. Technol. of China, Chengdu, China

Volume

9

fYear

2010

fDate

7/2/1905 12:00:00 AM

Firstpage

303

Lastpage

306

Abstract

This letter presents a VHF/UHF loaded wire antenna with an on-body matching network for broadband or multiband wireless applications. A genetic algorithm (GA) is used to optimize antenna structure and the on-body matching network. The designed 1.47-m antenna with a lossless LC parallel circuit load and a 0.32-m sleeve pedestal can work from 30 to 520 MHz. In the working band, the measured voltage standing-wave ratio (VSWR) and the gain of the loaded antenna with the on-body matching network are less than 2 and greater than 0 dBi, respectively. The efficiency of the on-body matching network is greater than 35% over the frequency range of 30 ˜ 520 MHz, greater than 38% over 60 ˜ 200 MHz, and greater than 42% over 210 ˜ 520 MHz.

Keywords

UHF antennas; VHF antennas; genetic algorithms; wire antennas; GA optimization; LC parallel circuit; VHF-UHF antenna; VSWR; broadband wireless applications; frequency 30 MHz to 520 MHz; genetic algorithm; matching network; multiband wireless applications; size 0.32 m; size 1.47 m; voltage standing-wave ratio; wire antenna; Genetic algorithm (GA); VHF/UHF antenna; loaded antenna; optimization; sleeve antenna;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2010.2047374

Filename

5443685