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

Wan Ibrahim, Wan Zamzulri (2017) Compact omnidirectional VHF antenna for PDRM two ways radio communication vehicles / Wan Zamzulri Wan Ibrahim. Masters thesis, Universiti Teknologi MARA (UiTM).

Abstract

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.

Metadata

Item Type: Thesis (Masters)
Creators:
Creators
Email / ID Num.
Wan Ibrahim, Wan Zamzulri
2014309951
Contributors:
Contribution
Name
Email / ID Num.
Thesis advisor
Sulaiman, Ahmad Asari
UNSPECIFIED
Subjects: T Technology > TK Electrical engineering. Electronics. Nuclear engineering > Radio
T Technology > TK Electrical engineering. Electronics. Nuclear engineering > Electronics > Apparatus and materials > Antennas
Divisions: Universiti Teknologi MARA, Shah Alam > Faculty of Electrical Engineering
Programme: Master of Science (Telecommunication and Information Engineering)
Keywords: Patch antenna, omnidirectional, meander line
Date: 2017
URI: https://ir.uitm.edu.my/id/eprint/69078
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