Browsing by Author "McCabe, Steven Owen"
Now showing items 6-10 of 15
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Implantable electrode structures and their RF effects in MRI machines
(The University of Waikato, 2019)Medical implants incorporating long insulated conductors can generate a serious heating hazard to a patient undergoing a Magnetic Resonance Imaging (MRI) scan. Under the high-power RF field from an MRI machine, the conductors ... -
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 ... -
Measurement of implant electrode leads using time-domain reflectometry to predict the resonant length for MRI heating
(Electronics New Zealand Inc, 2016)Magnetic Resonance Imaging (MRI) machines can generate hazardous RF heating of patients with implanted neurostimulation leads. Consequently, most patients with these implants are contraindicated from having MRI scans. The ...
