Publications
255 results found
Rathnayake-Arachchige D, Hutt DA, Conway PP, et al., 2013, Patterning of electroless copper deposition on low temperature co-fired ceramic, IEEE 15th Electronics Packaging Technology Conference (EPTC 2013), Pages: 630-644
Otter WJ, Hanham SM, Ridler NM, et al., 2013, 100 GHz photonic crystal devices, ARMMS RF & Microwave Society Conference
Lee RMA, Sunday A, Kapur N, et al., 2013, 3D microwave & millimetre-wave system-on-substrate using sacrificial layers for printed RF MEMS components, R2i2 Electronics Conference, Joint IMAPS-UK, ESP-KTN & IeMRC Event
Pinuela M, Yates DC, Lucyszyn S, et al., 2013, The New Wireless, Energy Harvesting 2013, EPSRC Energy Harvesting Network
Lucyszyn S, 2013, An Engineering Approach Towards Creating Ubiquitous THz Applications, International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves (MSMW), Publisher: IEEE, Pages: 45-45
Otter WJ, Hanham SM, Episkopou E, et al., 2013, Photoconductive Photonic Crystal Switch, 38th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Publisher: IEEE, ISSN: 2162-2027
- Author Web Link
- Cite
- Citations: 2
Klein N, Basey-Fisher TH, Otter WJ, et al., 2013, TOWARDS MICROWAVE AND MILLIMTER WAVE BIOSENSORS, International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves (MSMW), Publisher: IEEE, Pages: 509-+
Lucyszyn S, Hu F, Otter WJ, 2013, Technology Demonstrators for Low-cost Terahertz Engineering, 3rd Asia-Pacific Microwave Conference Proceedings (APMC), Publisher: IEEE, Pages: 518-520
- Author Web Link
- Cite
- Citations: 5
Episkopou E, Papantonis S, Otter WJ, et al., 2012, Defining material parameters in commercial EM solvers for arbitrary metal-based THz structures, IEEE Transactions on Terahertz Science and Technology, Vol: 2, Pages: 513-524
Frequency-domain solvers are used extensivelyfor modeling arbitrary metal-based terahertz structures. Fourwell-known commercially available electromagnetic (EM) modelingsoftware packages include HFSS™, CST MicrowaveStudio®, EMPro, and RSoft. However, there are a number ofoperational issues that relate to how they can be used to obtainmore meaningful and accurate results. Even experienced usersof these and similar software packages may not fully appreciatesome of the subtle ambiguities in defining boundaries and materialparameters for use in THz applications. To this end, a detailedcomparative study has been undertaken, in consultation with allfour vendors. First, in order to avoid introducing ambiguities,frequency dispersion in materials has to be clearly defined fromfirst principles; in both intrinsic and effective forms. Differentfrequency dispersion models are then introduced for ‘metal-like’materials. To act as benchmark structures, conventional air-filledmetal-pipe rectangular waveguides, associated cavity resonatorsand a spoof surface plasmon waveguide have been simulated,using a raft of different approaches; with a view to illustratingquantifiable weaknesses in commercial software packages forsimulating arbitrary metal-based THz structures. This paperhighlights intuitive and logical approaches that give incorrectresults and, where possible, makes recommendations for themost appropriate solutions that have hitherto not been given inTechnical Notes.
Pinuela M, Yates DC, Mitcheson PD, et al., 2012, Current State of Research at Imperial College London in RF Harvesting and Inductive Power Transfer, 2nd International Workshop on Wireless Energy Transport and Harvesting, Pages: 1-4
This paper presents simulation and experimental results for ambient RF energy harvesting and Inductive Power Transfer systems. End-to-end and dc-load efficiency measurements and calculations were performed to demonstrate the capabilities of both systems, respectively. An RF spectral survey was conducted across all the 270 underground stations in London. DTV, GSM900, GSM1800 and 3G were selected as the highest contributors and single banded rectennas were fabricated for all frequencies. Ground level measurements demonstrate that more than 50 stations have suitable channel power levels per band to allow ambient RF energy harvesting. Efficiencies of up to 40% were achieved with a single banded rectenna operating at GSM 900, and efficiencies higher than 20% were achieved for TV and 3G. Furthermore a high frequency, semi-resonant Class-E driver was used to transfer 60 W of power across a 30 cm distance with a dc-load efficiency of 66%.
Hu F, Lucyszyn S, 2012, THz torch technologies for 21st century applications, IoP Photon12
Episkopou E, Papantonis S, Holmes AS, et al., 2012, Optically-controlled plasma switch for integrated terahertz applications, 39th IEEE International Conference on Plasma Science (ICOPS2012)
Hu F, Lucyszyn S, 2011, Ultra-low cost ubiquitous THz security systems, 25th Asia-Pacific Microwave Conference (APMC2011), Publisher: Engineers Australia, Pages: 60-62
Lucyszyn S, Larsson MP, 2011, Mechanical bend testing of fullerene nanowhiskers, Fullerene Nanowhiskers, Editors: Miyazawa, Publisher: Pan Stanford Publishing, Pages: 117-136, ISBN: 9789814241854
Lucyszyn S, Zhou Y, 2011, Engineering approach to modelling metal THz structures, Online Journal of Terahertz Science and Technology (JTST), Vol: 4, Pages: 1-8, ISSN: 1941-7411
Pranonsatit S, Holmes AS, Lucyszyn S, 2011, Microwave modelling of radio frequency microelectromechanical rotary switches, IET Microwaves, Antennas & Propagation, Vol: 5, Pages: 255-261
In this study, both full 3D electromagnetic and equivalent circuit modelling of a radio frequencymicroelectromechanical systems (RF MEMS) single-pole eight-throw rotary switch are reported for the first time. Excellentagreement has been achieved between measurements and modelled performance for frequencies up to 12 GHz. In order tovalidate the effectiveness of the modelling, a 2-bit true time delay phase shifter having a centre frequency of 2 GHz has beendemonstrated. The traditional topology of the switched delay line was adopted with two rotary switches employed for signalrouting. This phase shifter represents the first ever application of any RF MEMS rotary switch. It is shown that the switchmodel can accurately predict the measured performance of the phase shifter, without the need for adding new circuit elementsor tweaking of model parameters. The low measured root mean square deviations of insertion phase from the predictedresponses increase as 1.3o, 1.9o, 2.5o and 3.4o when the phase states are stepped through 0o, 90o, 180o and 270o, respectively.
Episkopou E, Papantonis S, Otter WJ, et al., 2011, Demystifying Material Parameters for Terahertz Electromagnetic Simulation, 4th UK/Europe-China Conference on Millimetre Waves and Terahertz Technologies, Pages: 80-81
Lucyszyn S, Lu H, Hu F, 2011, Ultra-low Cost THz Short-range Wireless Link, IEEE-MTT-S International Microwave Workshop Series on Millimeter Wave Integrated Technologies, Publisher: IEEE, Pages: 49-52
This paper demonstrates an ultra-low cost THz system for implementing a short-range wireless communications link in the far/mid-infrared parts of the electromagnetic spectrum. The basic prototype front-end hardware is deliberately kept very simple; based around miniature incandescent light bulbs, THz filters and pyroelectric infrared sensors. While only a low data rate has been experimentally demonstrated so far, this does not represent a fundamental limitation, as a number of technological enhancements are possible. It is believed that this “THz torch” technology has its niche in ubiquitous security applications that do not require high data rates or large distance operation (e.g. secure RFID, smart key fobs and remote controls).
Pinuela M, Yates DC, Mitcheson PD, et al., 2011, Maximising the Link Efficiency of Resonant Inductive Coupling for Wireless Power Transfer, 1st International Workshop on Wireless Energy Transport and Harvesting, Pages: 1-4
Pinuela M, Mitcheson PD, Lucyszyn S, 2010, Analysis of Scalable Rectenna Configurations for Harvesting High Frequency Ambient Radiation, PowerMEMS 2010, Pages: 41-44
Lucyszyn S, 2010, Introduction, Advanced RF MEMS, Publisher: Cambridge University Press, Pages: 1-22, ISBN: 978-0-521-89771-6
Lucyszyn S, Pranonsatit S, Choi J-Y, et al., 2010, Niche switch technologies, Advanced RF MEMS, Publisher: Cambridge University Press, Pages: 73-108, ISBN: 978-0-521-89771-6
Herbertz K, Lucyszyn S, 2010, Electromagnetic bandgap filter with single-cell monolithic microwave integrated circuit-tuneable defect, IET Microwaves, Antennas and Propagation, Vol: 4, Pages: 1123-1131
Chrisostomidis CE, Lucyszyn S, 2010, Seed function combination selection for chained function filters, Vol: 5, Pages: 799-807
An algorithm is presented for seed function combination selection for chained function filters on the basis of pre-defined manufacturing limitations. To this end, and for the first time, combinatorial analysismethods have been applied to computer-aided filter design routines. A fundamental Monte-Carlo margin has been discovered that represents an upper-bound on the worst-case pass-band return-loss responses that cannot be exceeded. This can be exploited to extend the state-of-the art in tuningless high-performance filterimplementations towards higher frequencies and smaller fractional bandwidths or, alternatively, to lower the accuracy and manufacturing cost for a given set of filter specifications.
Zhou Y, Lucyszyn S, 2010, Modelling of reconfigurable terahertz integrated architecture (RETINA) SIW structures, PIER Journal, Vol: 105, Pages: 71-92
This paper discusses for the first time the combined optoelectronic-electromagnetic modelling of a new technology that represents a paradigm shift in the way millimetre-wave and terahertz electronics can be implemented using the REconfigurable Terahertz INtegrated Architecture (RETINA) concept. Instead of having traditional metal-pipe rectangular waveguide structures with metal sidewalls, RETINA structures have photo-induced virtual sidewalls within a high resistivity silicon substrate. This new class of substrate integrated waveguide (SIW) technology allows individual components to be made tuneable and subsystems to be reconfigurable, by changing light source patterns. Detailed optoelectronic modelling strategies for the generation of virtual sidewalls and their electromagnetic interactions are presented in detail for the first time. It is found with double-sided illuminated RETINA structures that an insertion loss of 1.3 dB/ λg at 300 GHz is predicted for the dominant TE10 mode and for a cavity resonator a Q-factor of 4 at 173 GHz is predicted for the TE101 mode. While predicted losses are currently greater than other non-tuneable/reconfigurable SIW technologies, there is a wide range of techniques that can improve their performance, while still allowing completely arbitrary topologies to be defined in the x-z plane. For this reason, it is believed that this technology could have a profound impact on the future of millimetre-wave and terahertz electronics. As a result, this paper could be of interest to research groups that have the specialised experimental resources to implement practical demonstrator exemplars.
Pu SH, Holmes AS, Yeatman EM, et al., 2010, Stable zipping RF MEMS varactors, JOURNAL OF MICROMECHANICS AND MICROENGINEERING, Vol: 20, ISSN: 0960-1317
- Author Web Link
- Cite
- Citations: 13
Lucyszyn S, Zhou Y, 2010, THz Applications for the Engineering Approach to Modelling Frequency Dispersion within Normal Metals at Room Temperature, PIERS Online, Vol: 6, Pages: 293-299
The use of the accurate classical relaxation-effect model for frequency dispersion innormal metals at room temperature with THz structures can be mathematically cumbersome andnot insightful. Recent work has demonstrated that it is possible to dramatically simplify otherwise complex analysis and allows for a much deeper insight to be gained into the classical relaxation-effect model. This paper gives applications for this engineering approach. Here, using the concept of Q-factor for a metal, the synthesized equivalent transmission line model is validated. Then, using the concept of complex skin depth, analysis is performed on hollow metal-pipe rectangular waveguides and their associated cavity resonators. This work proves that the mathematical modelling of THz structures can be greatly simplied by taking an electrical engineering approach to these electromagnetic problems.
Lucyszyn S, Zhou Y, 2010, Engineering approach to modelling frequency dispersion within normal metals at room temperature for THz applications, PIER Journal, Vol: 101, Pages: 257-275, ISSN: 1559-8985
Lucyszyn S, 2010, Substrate integrated metal-pipe rectangular waveguides, IEEE International Microwave Symposium (IMS2010) Workshop Proceedings, WSI: Substrate Integrated Circuits
Robertson ID, Hizan HM, Hunter IC, et al., 2010, Millimeter-wave substrate-integrated circuits on photo-imageable substrate and LTCC, European Microwave Week (EuMW 2010) Workshop Proceedings: Recent Advances on Substrate Integrated Waveguide Filters
This data is extracted from the Web of Science and reproduced under a licence from Thomson Reuters. You may not copy or re-distribute this data in whole or in part without the written consent of the Science business of Thomson Reuters.