ORCID Profile
0000-0002-4045-5267
Current Organisation
UNSW Australia
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In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Communications Technologies | Microwave and Millimetrewave Theory and Technology | Microelectronics and Integrated Circuits | Materials Engineering | Microwave And Millimetrewave Technology | Condensed Matter Physics | Photodetectors, Optical Sensors and Solar Cells | Materials Engineering not elsewhere classified | Functional Materials | Nanotechnology | Microtechnology | Medicinal and Biomolecular Chemistry not elsewhere classified | Petroleum and Reservoir Engineering | Electrical Engineering | Interdisciplinary Engineering | Composite and Hybrid Materials | Medical Biotechnology Diagnostics (incl. Biosensors) | Condensed Matter Physics—Electronic And Magnetic Properties; | Structural Engineering | Structural Chemistry and Spectroscopy | Nanophotonics | Optical Physics not elsewhere classified | Nanomanufacturing | Interdisciplinary Engineering Not Elsewhere Classified | Carbon Sequestration Science | Materials Engineering Not Elsewhere Classified | Surfaces and Structural Properties of Condensed Matter | Industrial Biotechnology Diagnostics (incl. Biosensors) | Electronic and Magnetic Properties of Condensed Matter; Superconductivity | Nanoelectromechanical Systems | Nanofabrication, Growth and Self Assembly
Network Infrastructure Equipment | Telecommunications | Combined operations | Integrated Circuits and Devices | Communication equipment not elsewhere classified | Satellite Navigation Equipment | Oil and gas | Command, Control and Communications | Biological sciences | Ceramics, Glass and Industrial Mineral Products not elsewhere classified | Chemical sciences | Physical sciences | Fabricated Metal Products not elsewhere classified | Energy Storage (excl. Hydrogen) | Mobile Data Networks and Services | Ceramics | Structural glass and glass products | Electricity transmission | Communication Equipment not elsewhere classified | Metals (composites, coatings, bonding, etc.) | Medical instrumentation | Diagnostic methods | Scientific instrumentation | Cement and concrete materials | Industrial Instruments | Public health not elsewhere classified |
Publisher: Informa UK Limited
Date: 2003
Publisher: IEEE
Date: 06-2017
Publisher: Informa UK Limited
Date: 03-1999
Publisher: IEEE
Date: 10-2012
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 05-2003
Publisher: Institution of Engineering and Technology (IET)
Date: 28-07-2020
Publisher: IEEE
Date: 2008
Publisher: IEEE
Date: 04-2013
Publisher: IEEE
Date: 09-2015
Publisher: IEEE
Date: 06-2013
Publisher: Elsevier BV
Date: 02-2011
Publisher: MDPI AG
Date: 30-09-2021
DOI: 10.3390/ELECTRONICS10192391
Abstract: Substrate integrated waveguide (SIW) technology that combines 3D and 2D structures has been successfully utilized due to its notable advantages, including in its application to H-plane horn antennas. As this type of antenna is commonly constructed on thin substrates, the E-plane radiation pattern is always wide, thereby limiting the achievable gain performance. In this work, we propose an approach that incorporates 3D printed horns on a prefabricated SIW H-plane horn antenna to successfully narrow the E-plane radiation pattern, thereby improving the gain performance. The proposed E-plane horn is designed at the aperture of the original H-plane horn, providing a smooth and continuous wave transition from the thin substrate to the end-fire direction. This approach improves the directional radiation performance significantly and reduces fabrication time and associated difficulties as the parasitic structures are simply attached to the SIW horn, without the requirement of redesigning or refabricating the original antenna. From 20 to 25 GHz, an optimized prototype shows excellent performance. At 22.7 GHz, it exhibits 35° and 33° for the E- and H-plane half-power beamwidths (HPBWs), with corresponding side-lobe levels (SLLs) of −23 dB and −15 dB. The present research reveals that the proposed design presents high feasibility and a reduced demand for high-precision manufacturing processes at a lower cost, concomitantly providing an effective means to further improve on the radiation characteristics.
Publisher: Springer Science and Business Media LLC
Date: 04-07-2007
Publisher: IEEE
Date: 2000
Publisher: Elsevier BV
Date: 2007
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 10-2016
Publisher: Institution of Engineering and Technology (IET)
Date: 2002
DOI: 10.1049/EL:20020174
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 12-0990
Publisher: IEEE
Date: 12-2007
Publisher: AIP Publishing
Date: 04-09-1995
DOI: 10.1063/1.115547
Abstract: Measurements of the linear (Pockels) electro-optical coefficient of wurtzite GaN are reported. The values for the electro-optic coefficients r33 and r31 are 1.91±0.35 and 0.57±0.11 pm/V at 633 nm, respectively, in agreement with extrapolations from measured second-harmonic generation coefficients (χ33(2)=−20±6 pm/V and χ31(2)=10±3 pm/V) suggesting that the dominant contributions are electronic in origin. Measurements were performed using a Mach–Zehnder interferometer with LiNbO3 as a reference material. Piezoelectric effects were also observed.
Publisher: IEEE
Date: 10-2018
Publisher: SPIE
Date: 21-12-2007
DOI: 10.1117/12.769331
Publisher: SPIE
Date: 16-02-2004
DOI: 10.1117/12.582428
Publisher: MDPI AG
Date: 20-03-2018
DOI: 10.3390/MI9030138
Publisher: AIP Publishing
Date: 11-2006
DOI: 10.1063/1.2372575
Abstract: The electric field tuning characteristics of a combined microwave resonator based on ferrite-ferroelectric layered structure have been studied in a wide range of bias magnetic fields. The combined ferrite-ferroelectric resonator was composed of two rectangular resonators fabricated from a ceramic barium strontium titanate (BST) slab and a single-crystal yttrium iron garnet (YIG) film. The in-plane dimensions for the YIG and BST resonators were chosen to be equal in order to maximize the electromagnetic coupling between their main modes and reduce spurious influence of their higher order modes. A tuning range of 100MHz for the resonator frequency was realized at 5GHz through the variation of magnetic permeability and dielectric permittivity of the YIG-BST structure. A theory for the hybrid wave excitations, based on a coupled-mode approach, has been developed and provides good description of the data.
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 06-2009
Publisher: AIP Publishing
Date: 17-06-2004
DOI: 10.1063/1.1766398
Abstract: A large magnetoresistive (MR) effect was observed in melt-textured (MT) Bi2212 in which USr2CaO6 was added in a proportion of 6wt%. The resistivity measurements of MT Bi2212+6wt% USr2CaO6 show high sensitivity to applied dc fields, as compared to pure Bi2212, in particular at low fields, below 3T, and in a temperature range between 45K and 85K. In this temperature range, the MR effect of MT Bi2212+6wt% USr2CaO6 is two orders of magnitude larger than the MR effect in pure Bi2212, and display a maximum that may be tuned to a particular temperature within the above range, by changing the amount of added nonsuperconducting compound. A cryogenic sensor was built and tested at 77K in low fields. It shows a good sensitivity and small (∼1%) hysteresis of resistivity when the applied field was cycled between 0T and 1T.
Publisher: Institution of Engineering and Technology (IET)
Date: 13-01-2021
DOI: 10.1049/MIA2.12036
Publisher: IEEE
Date: 11-2015
Publisher: IEEE
Date: 10-2009
Publisher: IEEE
Date: 10-2018
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 06-2021
Publisher: IEEE
Date: 12-2009
Publisher: Springer Science and Business Media LLC
Date: 11-05-2013
Publisher: Springer Science and Business Media LLC
Date: 20-03-2009
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 10-2016
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2012
Publisher: IEEE
Date: 28-11-2021
Publisher: IEEE
Date: 06-2011
Publisher: SPIE
Date: 23-02-2005
DOI: 10.1117/12.582437
Publisher: IEEE
Date: 04-2013
Publisher: IEEE
Date: 11-2012
Publisher: IEEE
Date: 11-2009
Publisher: IEEE
Date: 07-2011
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 03-2012
Publisher: Wiley
Date: 20-06-2002
DOI: 10.1002/MOP.10422
Publisher: Cambridge University Press (CUP)
Date: 09-09-2014
DOI: 10.1017/S1759078714001214
Abstract: Millimeter-wave reconfigurable bandpass filters with the ability to operate between 60 GHz and the E-band, capable of providing good channel isolation, are presented. A fully integrated filter with all reconfigurable elements embedded for compactness and a switchable filter that uses radio frequency micro-electro-mechanical system (RF MEMS) single-pole double-throw switches are designed. A new method that increases fractional bandwidths is introduced. It uses inductively coupled inverters without requiring their tuning. New circuit models are offered for inverters, reconfigurable resonators, and reconfigurable bandstop stubs. Our compact bandpass filter achieved a footprint of only 4.75 mm × 3.75 mm. Measurements for our filters show good agreement with the results of simulations.
Publisher: IEEE
Date: 06-2009
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2021
Publisher: Institution of Engineering and Technology (IET)
Date: 22-10-2019
Publisher: IEEE
Date: 12-2007
Publisher: IEEE
Date: 09-2006
Publisher: IEEE
Date: 10-2010
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 09-2018
Publisher: Elsevier BV
Date: 2005
Publisher: Optica Publishing Group
Date: 2005
Abstract: A design of a planar dual-mode filter is proposed and developed for satellite and wireless communication systems. The novelty of the proposed structure consists of replacing simple diagonal design with a starlike one. This offers the ability of controlling the central frequency and the bandwidth. The filter was implemented on Rogers substrate with 10.8 dielectric constant. The proposed filter structure is 37% smaller in size in comparison with traditional dual mode filters.
Publisher: IEEE
Date: 10-2019
Publisher: Cambridge University Press (CUP)
Date: 11-03-2014
DOI: 10.1017/S1759078714000130
Abstract: The paper proposes a new design for a single-arm, rectangular, spiral antenna (SARSA) with a wide azimuth space coverage. The antenna, operating at around 3.3 GHz, is capable of steering the beam in four separate directions in the azimuth plane. Only three DC signals are required to control the seven PIN diodes attached along the spiral arm. The antenna has a 200-MHz-bandwidth around 3.3 GHz with stable maximum beam directions that are defined by setting of the switches. Considerations required in selecting switch positions when designing such antennas for other frequencies, are presented. The measured return loss, radiation pattern and gain, all have close correlation with the simulation results. A detailed comparison of our design with those already proposed in the literature is given.
Publisher: Walter de Gruyter GmbH
Date: 26-01-2017
Abstract: A wideband heptagonal fractal monopole antenna with coplanar waveguide feed is designed and fabricated in X-band frequency range. Comparison of heptagonal fractal monopole antennas with two different substrates to achieve optimum efficiency for UWB applications is presented. FR4 and RT/Duroid 5880 substrates are used for antenna design and fabrication. Four iterations of base shape are used. Fractal antenna has omni-directional radiation pattern. Simulated and measured results showed that monopole fractal antenna with RT/Duroid 5880 substrate has better performance than fractal antenna with FR4 substrate in terms of bandwidth and return loss. Major application area of proposed antenna is wireless body area networks.
Publisher: Informa UK Limited
Date: 03-2000
Publisher: IEEE
Date: 12-2008
Publisher: IEEE
Date: 08-2010
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2020
Publisher: ACTAPRESS
Date: 2010
Publisher: IEEE
Date: 10-07-2022
Publisher: IEEE
Date: 03-0004
Publisher: Elsevier BV
Date: 08-1992
Publisher: IEEE
Date: 28-11-2021
Publisher: IEEE
Date: 04-12-2021
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 09-2017
Publisher: Elsevier BV
Date: 03-1996
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 08-2014
Publisher: IOP Publishing
Date: 17-06-2004
Publisher: IEEE
Date: 10-2008
Publisher: Springer Science and Business Media LLC
Date: 02-1994
DOI: 10.1007/BF00730374
Publisher: Informa UK Limited
Date: 2002
Publisher: Informa UK Limited
Date: 07-2005
Publisher: IEEE
Date: 07-2011
Publisher: IEEE
Date: 09-2006
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2016
Publisher: Springer Science and Business Media LLC
Date: 11-04-2015
Publisher: IEEE
Date: 04-2013
Publisher: IEEE
Date: 07-2013
Publisher: IEEE
Date: 02-2010
Publisher: Informa UK Limited
Date: 18-05-2007
Publisher: IEEE
Date: 10-2008
Publisher: Elsevier BV
Date: 2004
Publisher: IEEE
Date: 10-2017
Publisher: IEEE
Date: 10-2008
Publisher: IEEE
Date: 12-2008
Publisher: Elsevier BV
Date: 03-1995
Publisher: EDP Sciences
Date: 09-2005
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 02-2020
Publisher: IEEE
Date: 28-11-2021
Publisher: IEEE
Date: 06-2008
Publisher: IEEE
Date: 2002
Publisher: Trans Tech Publications, Ltd.
Date: 02-2014
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.901.105
Abstract: This paper reviews some ground breaking development of RF MEMS technology in Australia at the UNSW, over the past decade. It presents some unique and novel designs using RF MEMS switches to achieve reconfigurable RF front-end circuits. These designs include multiport RF MEMS switches, switch matrices, reconfigurable filters and antennas. The resulting devices achieved RF performance that is unmatched by any existing RF andmicrowave technologies.
Publisher: IEEE
Date: 12-2006
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 03-2022
Publisher: IEEE
Date: 10-2015
Publisher: Wiley
Date: 26-01-2017
DOI: 10.1002/MOP.30349
Publisher: Wiley
Date: 18-11-2014
DOI: 10.1002/MOP.28787
Publisher: Elsevier BV
Date: 2007
Publisher: IEEE
Date: 2002
Publisher: Wiley
Date: 19-06-2007
DOI: 10.1002/MOP.22722
Publisher: Elsevier BV
Date: 08-1992
Publisher: Wiley
Date: 08-04-2018
DOI: 10.1002/MOP.31154
Publisher: SPIE
Date: 21-12-2007
DOI: 10.1117/12.769359
Publisher: IEEE
Date: 05-2019
Publisher: Elsevier BV
Date: 2005
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 03-2022
Publisher: ACM
Date: 30-05-2008
Publisher: SPIE
Date: 21-12-2007
DOI: 10.1117/12.758981
Publisher: Wiley
Date: 23-04-2014
DOI: 10.1002/MOP.28411
Publisher: IEEE
Date: 07-2011
Publisher: IEEE
Date: 09-2006
Publisher: IEEE
Date: 03-2011
Publisher: IEEE
Date: 09-2015
Publisher: IEEE
Date: 27-04-2022
Publisher: IOP Publishing
Date: 15-12-2009
Publisher: IOP Publishing
Date: 28-06-2010
Publisher: Institution of Engineering and Technology (IET)
Date: 05-2015
DOI: 10.1049/EL.2015.0528
Publisher: Informa UK Limited
Date: 08-2018
DOI: 10.2147/MDER.S168338
Publisher: EDP Sciences
Date: 09-2005
Start Date: 2020
End Date: 12-2024
Amount: $431,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2009
End Date: 06-2012
Amount: $285,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2017
End Date: 04-2022
Amount: $467,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2012
End Date: 01-2015
Amount: $320,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2006
End Date: 12-2009
Amount: $336,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2015
End Date: 12-2017
Amount: $377,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2011
End Date: 12-2011
Amount: $290,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 08-2010
End Date: 12-2010
Amount: $600,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 06-2010
End Date: 03-2012
Amount: $600,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2007
End Date: 12-2008
Amount: $400,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 05-2005
End Date: 12-2006
Amount: $864,610.00
Funder: Australian Research Council
View Funded Activity