Design of a VHF log-periodic dipole antenna

Very High Frequency (VHF) is widely used in our life, be it for broadcasting radio, television, two way radio system used for communication in military usage and even air traffic control. VHF frequency span from 30 MHz to 300MHz. In the lower frequency range, the length of the element can be humongo...

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Main Author: Ng, Xianyang
Other Authors: Shen Zhongxiang
Format: Final Year Project
Language:English
Published: 2015
Subjects:
Online Access:http://hdl.handle.net/10356/65731
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-657312023-07-07T17:07:12Z Design of a VHF log-periodic dipole antenna Ng, Xianyang Shen Zhongxiang School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering::Antennas, wave guides, microwaves, radar, radio Very High Frequency (VHF) is widely used in our life, be it for broadcasting radio, television, two way radio system used for communication in military usage and even air traffic control. VHF frequency span from 30 MHz to 300MHz. In the lower frequency range, the length of the element can be humongous, up to 5m long for a half-wave dipole. Therefore, it is significant to look into reducing the size of the antenna. In this project, the standard log periodic dipole array (LPDA) antenna will be looked into to understand its operation principle and theory behind it. After which miniaturization technology will be discussed and the means to go about integrating the technique to the LPDA. After all the theory and analyses, the High Frequency Structure Simulator (HFSS), a simulation software will be used to simulate both the original LPDA and also the LPDA with miniaturization technology employed. The new structure will go through a series of parametric study to get the optimal parameters. The final design of LPDA have a good VSWR, radiation pattern, also there is a significant decrease in size. Bachelor of Engineering 2015-12-10T08:12:59Z 2015-12-10T08:12:59Z 2015 2015 Final Year Project (FYP) http://hdl.handle.net/10356/65731 en Nanyang Technological University 53p application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Electrical and electronic engineering::Antennas, wave guides, microwaves, radar, radio
spellingShingle DRNTU::Engineering::Electrical and electronic engineering::Antennas, wave guides, microwaves, radar, radio
Ng, Xianyang
Design of a VHF log-periodic dipole antenna
description Very High Frequency (VHF) is widely used in our life, be it for broadcasting radio, television, two way radio system used for communication in military usage and even air traffic control. VHF frequency span from 30 MHz to 300MHz. In the lower frequency range, the length of the element can be humongous, up to 5m long for a half-wave dipole. Therefore, it is significant to look into reducing the size of the antenna. In this project, the standard log periodic dipole array (LPDA) antenna will be looked into to understand its operation principle and theory behind it. After which miniaturization technology will be discussed and the means to go about integrating the technique to the LPDA. After all the theory and analyses, the High Frequency Structure Simulator (HFSS), a simulation software will be used to simulate both the original LPDA and also the LPDA with miniaturization technology employed. The new structure will go through a series of parametric study to get the optimal parameters. The final design of LPDA have a good VSWR, radiation pattern, also there is a significant decrease in size.
author2 Shen Zhongxiang
author_facet Shen Zhongxiang
Ng, Xianyang
format Final Year Project
author Ng, Xianyang
author_sort Ng, Xianyang
title Design of a VHF log-periodic dipole antenna
title_short Design of a VHF log-periodic dipole antenna
title_full Design of a VHF log-periodic dipole antenna
title_fullStr Design of a VHF log-periodic dipole antenna
title_full_unstemmed Design of a VHF log-periodic dipole antenna
title_sort design of a vhf log-periodic dipole antenna
publishDate 2015
url http://hdl.handle.net/10356/65731
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