Impulse TDR and its Application to Characterisation of Antennas

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dc.contributor.advisorScott, Jonathan B.
dc.contributor.authorMcCabe, Steven Owen
dc.date.accessioned2011-12-13T03:12:14Z
dc.date.available2011-12-13T03:12:14Z
dc.date.issued2011
dc.date.updated2011-12-05T06:18:15Z
dc.description.abstractPassive 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 spurious reflections and outside noise is minimised. Despite the high level of accuracy achieved with this approach, such facilities have high costs associated with them. Recent publications have demonstrated the characterisation of antennas using a step-function time domain reflectometer (TDR) along with frequency-domain processing techniques. Localisation of the measurement in time prior to transformation allows for the dismissal of unwanted spurious reflections, eliminating the need for an anechoic chamber. An alternative technique is proposed whereby an impulse generator is employed in place of the step generator in a TDR. The advantage conferred by "impulse TDR" (ITDR) is that more energy is available at higher frequencies than with conventional step TDR, leading to a higher bandwidth and signal-to-noise ratio (SNR). The theoretical result is compared with measurement.
dc.format.mimetypeapplication/pdf
dc.identifier.citationMcCabe, S. O. (2011). Impulse TDR and its Application to Characterisation of Antennas (Thesis, Master of Philosophy (MPhil)). University of Waikato, Hamilton, New Zealand. Retrieved from https://hdl.handle.net/10289/5954en
dc.identifier.urihttps://hdl.handle.net/10289/5954
dc.language.isoen
dc.publisherUniversity of Waikato
dc.rightsAll items in Research Commons are provided for private study and research purposes and are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectImpulse TDR
dc.subjectStep TDR
dc.subjectWideband antenna measurements
dc.subjectfrequency-domain (FD) analysis
dc.subjectpulse measurements
dc.subjecttime domain reflectometry (TDR)
dc.subjecttransient response
dc.subjectequivalent-time sampling
dc.subjectreal-time sampling
dc.subjectRF transmission lines
dc.subjectvector network analyzer (VNA)
dc.titleImpulse TDR and its Application to Characterisation of Antennasen
dc.typeThesis
pubs.place-of-publicationHamilton, New Zealanden_NZ
thesis.degree.grantorUniversity of Waikato
thesis.degree.levelDoctoral
thesis.degree.nameMaster of Philosophy (MPhil)
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