Browsing by Author "McCabe, Steven Owen"
Now showing items 1-5 of 11
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Cause and Amelioration of MRI-Induced Heating Through Medical Implant Lead Wires
(2014)The RF fields present in magnetic resonance imaging (MRI) scanners can induce hazardous heating in patients wearing medical implants. The inherent design and locale of deep brain stimulators (DBS) and spinal cord stimulators ... -
Electromagnetic Techniques to Minimize the Risk of Hazardous Local Heating around Medical Implant Electrodes during MRI Scanning
(2015)Magnetic Resonance Imaging (MRI) scans are contraindicated for many patients with medical implants. We establish the circumstances that cause, and the resistances required to ameliorate and to eliminate dangerous levels ... -
Impulse TDR and its Application to Characterisation of Antennas
(University of Waikato, 2011)Passive microwave systems are traditionally characterised in the frequency-domain with a vector network analyser (VNA). The measurement of antennas typically takes place in an anechoic chamber where the interference from ... -
Impulse TDR and its application to measurement of antennas
(IEEE, 2011)The traditional stimulus signal used in a time-domain reflectometer (TDR) is a voltage step. We propose an alternative technique, whereby an impulse generator is employed in place of the step generator in a TDR. The advantage ... -
Measurement of antennas and microwave components using time-domain reflectometry of a voltage impulse
(IEEE, 2011)Band-pass microwave systems such as ultra-wideband antennas are traditionally characterized in the frequency-domain through a vector network analyzer in an anechoic chamber. A recent study proved antennas could be accurately ...
