Wee Chang Khor

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An experimental study concerning Ultra Wideband (UWB) Microwave Radar for breast cancer detection is described. A simple phantom, consisting of a cylindrical plastic container with low dielectric constant material imitating fatty tissues and a high dielectric constant object emulating tumour, is scanned with a tapered slot UWB probe antenna between 3.1 to(More)
A theoretical and experimental study of a novel image reconstruction algorithm for an Ultra Wide band (UWB) Microwave Imaging System aiming at detecting and locating small targets in a homogenous circular cylindrical dielectric body is presented. The system uses a double circular scan in which the second scan is achieved after rotating by a small angle the(More)
The design of a wideband microwave reflectometer for the purpose of inclusion in a breast cancer detection system is presented. In this system, a wideband frequency source is used to synthesize a narrow pulse via the stepfrequency synthesis method. The reflectometer undertakes measurements in frequency domain and the collected data is transformed into(More)
The design of compact wideband microwave reflectometers for the purpose of inclusion in a breast cancer detection system is presented. In this system, a wideband frequency source is used to synthesize a narrow pulse via the step-frequency synthesis method. The reflectometer undertakes measurements in the frequency domain and the collected data is(More)
The paper describes the design of hybrid circuits and antennas for a compact ultra wideband (UWB) microwave imaging system aimed at operation from 3.1 to 10.6GHz. The design of these components is accomplished with the use of full-wave electromagnetic field analysis and design software. The components are developed and experimentally tested. They show good(More)
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