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74 results on '"Mahon, Simon J."'

53. Full ETSI E-Band Doubler, Quadrupler and 24 dBm Power Amplifier

Author

Rodriguez, Melissa C., primary, Tarazi, Jabra, additional, Dadello, Anna, additional, Convert, Emmanuelle R. O., additional, McCulloch, MacCrae G., additional, Mahon, Simon J., additional, Hwang, Steve, additional, Mould, Rodney G., additional, Fattorini, Anthony P., additional, Young, Alan C., additional, Harvey, James T., additional, Parker, Anthony E., additional, Heimlich, Michael C., additional, and Wang, Wen-Kai, additional

Published
2012
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55. Q and V band doublers and receivers

Author

Convert, Emmanuelle R. O., primary, Mahon, Simon J., additional, Fattorini, Anthony P., additional, Dadello, Anna, additional, Tarazi, Jabra, additional, McCulloch, MacCrae G., additional, Hwang, Steve, additional, and Harvey, James T., additional

Published
2011
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56. Packaged Q band medium power amplifier

Author

Mahon, Simon J., primary, Fattorini, Anthony P., additional, Convert, Emmanuelle R. O., additional, Mould, Rodney G., additional, Evans, Peter W., additional, and Harvey, James T., additional

Published
2011
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57. Q band up-converter

Author

Convert, Emmanuelle R. O., primary, Mahon, Simon J., additional, Harvey, James T., additional, Hwang, MacCrae G. McCulloch. Steve, additional, Mould, Rodney G., additional, Fattorini, Anthony P., additional, Clement, Ryan M., additional, and Young, Alan C., additional

Published
2011
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60. A scalable linear model for FETs

Author

Tarazi, Jabra, primary, Mahon, Simon J., additional, Fattorini, Anthony P., additional, Heilmich, Michael C., additional, and Parker, Anthony E., additional

Published
2011
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61. Packaged, Integrated 32 to 40 GHz Millimeter-Wave Up-Converter

Author

Convert, Emmanuelle R. O., primary, Fattorini, Anthony P., additional, Mahon, Simon J., additional, Evans, Peter W., additional, McCulloch, MacCrae G., additional, Hwang, Steve, additional, Mould, Rodney G., additional, Young, Alan C., additional, and Harvey, James T., additional

Published
2010
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73. Periodic Structures for Reconfigurable Filter Design: A Comprehensive Review

Author

Irfan Shahid, Debabrata K. Karmokar, Michael Heimlich, Simon J. Mahon, D. N. P. Thalakotuna, Shahid, Irfan, Thalakotuna, Dushmantha, Karmokar, Debabrata K, Mahon, Simon J, and Heimlich, Michael

Subjects
Radiation, software radio, Computer science, Bandwidth (signal processing), filter banks, Filter (signal processing), Stopband, Condensed Matter Physics, Cutoff frequency, performance evaluation, 0906 Electrical and Electronic Engineering, Filter design, metamaterials, 5G mobile communication, power harmonic filters, Electronic engineering, Electrical and Electronic Engineering, Wideband, Networking & Telecommunications, Passband, 5G, microwave filters
Abstract

With the advent of 5G, software-defined radios (SDRs), and ultra-wideband systems, there is a rapid rise in the demand for reconfigurable RF front ends. Conventional methods of using filter banks or cascading multiple devices to achieve wideband performance would result in bulky hardware. Devices that can change their characteristics and respond in a controlled manner to a desired input are suitable for such designs. In filtering applications, the most desirable adaptive features include band-switching capabilities, the use of a cutoff frequency and/or bandwidth tuning, and a change in filter response from passband to stopband. Periodic structures have demonstrated great potential in achieving these characteristics. Refereed/Peer-reviewed

Published
2021
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74. A Compact Reconfigurable 1-D Periodic Structure in GaAs MMIC With Stopband Switching, Dual-Band Operation and Tuning Capabilities

Author

Irfan Shahid, Dushmantha N. Thalakotuna, Debabrata K. Karmokar, Simon J. Mahon, Michael Heimlich, Shahid, Irfan, Thalakotuna, Dushmantha N, Karmokar, Debabrata K, Mahon, Simon J, and Heimlich, Michael

Subjects
General Computer Science, electromagnetic bandgap (EBG), 08 Information and Computing Sciences, 09 Engineering, 10 Technology, Computer science, Bandwidth (signal processing), General Engineering, PIN diode, Reconfigurability, PIN diodes, Stopband, Inductor, Periodic structure, tunable filters, TK1-9971, law.invention, Filter (video), law, Electronic engineering, reconfigurable circuits, General Materials Science, Electrical engineering. Electronics. Nuclear engineering, Parasitic extraction, GaAs MMIC, Monolithic microwave integrated circuit
Abstract

This paper presents a systematic study of a compact and reconfigurable periodic structure in GaAs MMIC technology. Compactness is achieved by the introduction of spiral inductors in a conventional unit cell without disturbing the reactive loading mechanism. The proposed architecture exhibits a 28.3% wider stopband with 62.6% smaller footprint compared to a conventional structure. The compactness and bandwidth improvement in the proposed structure is explained with the help of dispersion and circuit analysis. The reconfigurability built into the design using PIN diodes allows stopband switching, dual-band operation and tuning capabilities with the mere use of a single reactive load in its unit cell. To the best of the authors knowledge, it is the first time a reconfigurable MMIC implementation is realized using the proposed structure or even the conventional design. As a guide to design, sensitivity analysis to filter performance is presented for important structure parameters. Switching element parasitics are discussed in two ways: firstly, with the design and measurement of structures with idealized switching conditions and in second, with the circuit and full-wave EM modelling of the finite periodic structure with the actual PIN diodes. The on-chip measurements of the fully reconfigurable filter show excellent agreement with simulations Refereed/Peer-reviewed

Published
2021

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