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Antenna design for GPR imaging system using an embedded transducer

Othman, MR; (2013) Antenna design for GPR imaging system using an embedded transducer. Masters thesis , UCL (University College London).

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Abstract

Today’s antenna has seen great application and expanded use in various fields from Ground Penetrating Radar (GPR) to mobile communication. While the performance of GPR has over the years improved and met users’ requirement, there are several performance degradation pertaining to the loss of information due to the existing GPR, specifically when the electromagnetic waves travel to and from target and suffers from information loss before the reflected waves are collected by the receiving antenna. The project focuses on analysing and designing antennas for GPR in the form of non-conventional GPR architecture which would give reduced path of travelling waves as the transmitting antenna is buried close to the target in the ground. This involved the study of different antenna designs to get the best optimised antenna performance in the ground. These antennas, which are analysed and designed for the required frequency band, have the possibility to work with Frequency Modulated Continuous Wave (FMCW) system architecture, accompanied with Synthetic Aperture Radar technique. The antennas were then fabricated and measured in small scaled real soil environment to verify the obtained result from simulation. The later part of this project involves the study of basic soil properties of the soil used in antenna’s S11 measurement. Various soil measurement techniques are discussed and Free Space technique was used in the measurement procedure. The complex permittivity of the soil was obtained in the measurement and the result confirms with the expected value of between 2.5 and 3.5. This is in agreement with permittivity values reported in a GPR textbook and in an application note

Type: Thesis (Masters)
Title: Antenna design for GPR imaging system using an embedded transducer
Language: English
Additional information: Permission for digitisation not received.
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1393553
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