Show simple item record

dc.contributor.authorBanting, Haydenen
dc.date.accessioned2020-12-07T19:06:08Z
dc.date.available2020-12-07T19:06:08Z
dc.identifier.urihttp://hdl.handle.net/1974/28615
dc.description.abstractPresented in this thesis are advancements made in the fields of broadband antennas, reconfigurable antennas and emerging materials in applied electromagnetics. Firstly, the investigation of a millimeter-wave log-periodic toothed antenna (LPTA) is shown. The design features a novel integrated planar feed structure which provides an extreme broadband input match. Simulation is carried out using a finite-element code (Ansys HFSS) to demonstrate operation from 22.8 GHz to 44.0 GHz with a peak realized gain of 7.48 dBi. Secondly, the investigation of an aperture-coupled liquid metal dipole antenna is presented to demonstrate continuous frequency reconfigurability over a 21% tuning bandwidth. A novel aperture-coupling feed structure with reduced back radiation is explored as a means to excite the liquid metal dipoles without requiring physical contact. A prototype is fabricated and measured where an input match of S11<-13 dB and peak gain of 3.99 +/- 0.51 dBi is observed over the tunable range. Thirdly, the broadband dielectric spectroscopy of emerging novel microelectronic materials is presented. Materials studied are those seeing use in microfluidic electronics, wearable electronics, and 3D printed electromagnetic structures. Complex permittivity is measured using commercial coaxial probes and novel analytic Cole-Cole models are produced through a non-linear least squares fitting routine on experimental data.en
dc.language.isoengen
dc.relation.ispartofseriesCanadian thesesen
dc.rightsQueen's University's Thesis/Dissertation Non-Exclusive License for Deposit to QSpace and Library and Archives Canadaen
dc.rightsProQuest PhD and Master's Theses International Dissemination Agreementen
dc.rightsIntellectual Property Guidelines at Queen's Universityen
dc.rightsCopying and Preserving Your Thesisen
dc.rightsThis publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.en
dc.subjectBroadband Antennasen
dc.subjectReconfigurable Antennasen
dc.subjectMillimeter-wave Antennasen
dc.subjectDielectric Spectroscopyen
dc.subjectFlexible Substratesen
dc.subject3D Printed Substratesen
dc.subjectFluidically-Tuned Antennasen
dc.subjectMaterial Characterizationen
dc.titleNovel Structures and Materials for Broadband Antennasen
dc.typethesisen
dc.description.degreeM.A.Sc.en
dc.contributor.supervisorSaavedra, Carlos
dc.contributor.departmentElectrical and Computer Engineeringen
dc.degree.grantorQueen's University at Kingstonen


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record