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Compact omnidirectional VHF antenna for PDRM two ways radio communication vehicles / Wan Zamzulri Wan Ibrahim

Development of Very High Frequency (VHF) omnidirectional antenna for two ways radio communication of Polis DiRaja Malaysia (PDRM) vehicle is reported. The size of the antenna is increasing relatively on the shifting down of the operational frequency which is effect to the rising of wavelength. The m...

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Main Author: Wan Ibrahim, Wan Zamzulri
Format: Thesis
Language:English
Published: 2017
Subjects:
Radio
Antennas
Online Access:https://ir.uitm.edu.my/id/eprint/69078/1/69078.pdf
https://ir.uitm.edu.my/id/eprint/69078/
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spelling my.uitm.ir.690782023-03-27T05:50:45Z https://ir.uitm.edu.my/id/eprint/69078/ Compact omnidirectional VHF antenna for PDRM two ways radio communication vehicles / Wan Zamzulri Wan Ibrahim Wan Ibrahim, Wan Zamzulri Radio Antennas Development of Very High Frequency (VHF) omnidirectional antenna for two ways radio communication of Polis DiRaja Malaysia (PDRM) vehicle is reported. The size of the antenna is increasing relatively on the shifting down of the operational frequency which is effect to the rising of wavelength. The most challenges is due to the large size of patch antenna at the VHF band. The antenna was invented from combination method of slots and meander line and partial ground plane. The narrow and deep slot were fixed on the ground plane after computing the dimensions. However an optimization was using the width of antenna feedline in order to overcome the mismatch impedance of the design. The size of the proposed antenna dimension are 251mm x 181mm or about 0.129?^, x 0.093^ if refer to the center frequency of 155 MHz. This reduction size was 68% from the conventional approach. This antenna produces an omnidirectional radiation pattern with 1.364 dBi gain. Results from both simulation and measurement agreed well each other. 2017 Thesis NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/69078/1/69078.pdf Compact omnidirectional VHF antenna for PDRM two ways radio communication vehicles / Wan Zamzulri Wan Ibrahim. (2017) Masters thesis, thesis, Universiti Teknologi MARA (UiTM).
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
language English
topic Radio
Antennas
spellingShingle Radio
Antennas
Wan Ibrahim, Wan Zamzulri
Compact omnidirectional VHF antenna for PDRM two ways radio communication vehicles / Wan Zamzulri Wan Ibrahim
description Development of Very High Frequency (VHF) omnidirectional antenna for two ways radio communication of Polis DiRaja Malaysia (PDRM) vehicle is reported. The size of the antenna is increasing relatively on the shifting down of the operational frequency which is effect to the rising of wavelength. The most challenges is due to the large size of patch antenna at the VHF band. The antenna was invented from combination method of slots and meander line and partial ground plane. The narrow and deep slot were fixed on the ground plane after computing the dimensions. However an optimization was using the width of antenna feedline in order to overcome the mismatch impedance of the design. The size of the proposed antenna dimension are 251mm x 181mm or about 0.129?^, x 0.093^ if refer to the center frequency of 155 MHz. This reduction size was 68% from the conventional approach. This antenna produces an omnidirectional radiation pattern with 1.364 dBi gain. Results from both simulation and measurement agreed well each other.
format Thesis
author Wan Ibrahim, Wan Zamzulri
author_facet Wan Ibrahim, Wan Zamzulri
author_sort Wan Ibrahim, Wan Zamzulri
title Compact omnidirectional VHF antenna for PDRM two ways radio communication vehicles / Wan Zamzulri Wan Ibrahim
title_short Compact omnidirectional VHF antenna for PDRM two ways radio communication vehicles / Wan Zamzulri Wan Ibrahim
title_full Compact omnidirectional VHF antenna for PDRM two ways radio communication vehicles / Wan Zamzulri Wan Ibrahim
title_fullStr Compact omnidirectional VHF antenna for PDRM two ways radio communication vehicles / Wan Zamzulri Wan Ibrahim
title_full_unstemmed Compact omnidirectional VHF antenna for PDRM two ways radio communication vehicles / Wan Zamzulri Wan Ibrahim
title_sort compact omnidirectional vhf antenna for pdrm two ways radio communication vehicles / wan zamzulri wan ibrahim
publishDate 2017
url https://ir.uitm.edu.my/id/eprint/69078/1/69078.pdf
https://ir.uitm.edu.my/id/eprint/69078/
_version_ 1761622457156894720
score 13.211869

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