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Your search keyword '"Syrett, B. A."' showing total 111 results
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111 results on '"Syrett, B. A."'

4. A Comprehensive Design Method for Dual-Gate MOSFET Mixers

Author

Bergsma, A. J. and Syrett, B. A.

Subjects
Power electronics -- Research, Rotary converters -- Design and construction, Oscillators (Electronics) -- Evaluation, Business, Computers and office automation industries, Electronics, Electronics and electrical industries
Abstract

A comprehensive design method for a dual-gate MOSFET (DGFET) mixer is proposed which provides a practical procedure to predict both the conversion gain and input compression point and to identify optimal bias conditions and local oscillator (LO) power level. Each step in the process can be implemented by either simulation or experimental methods and is suitable for both up-conversion or down-conversion. The technique is aimed at producing a well engineered design, not a rigorous numerical solution. Using a discrete packaged device, a single-balanced DGFET down-converter mixer circuit is designed and characterized using an RF input frequency of 857 MHz, LO frequency of 694 MHz, and an IF output frequency of 163 MHz.

Published
2000

9. InGaAsP digital optical switch on InP

Author

Barrios, Pedro, Poole, Philip, Buchanan, Margaret, Chow-Chong, Phillip, Golub, I., Lacelle, Charles, Syrett, B., Abdalla, S., and El-Mougy, S.

Abstract

2002 International Conference on the Alications of Photonic Technology

Published
2002

22. Fabrication of lithographically defined optical coupling facets for silicon-on-insulator waveguides by inductively coupled plasma etching

Author

Yap, K. P., primary, Lamontagne, B., additional, Delâge, A., additional, Janz, S., additional, Bogdanov, A., additional, Picard, M., additional, Post, E., additional, Chow-Chong, P., additional, Malloy, M., additional, Roth, D., additional, Marshall, P., additional, Liu, K. Y., additional, and Syrett, B., additional

Published
2006
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23. Rib ARROW Integrated Optic Polarizer

Author

Yuen, S., Jiang, W., Chrostowski, J., Wartak, M.S., and Syrett, B.

Subjects
health services administration, health care facilities, manpower, and services, education
Abstract

Proceedings of the Canadian Conference on Electrical Computer Engineering, September 4-6, 1990., Ottawa, Ontario, Canada

Published
1990

49. Electrical isolation of electrodes with submicron separation in a digital optical switch.

Author

Ng, S., Abdalla, S., Syrett, B., Barrios, P., McKinnon, W. R., Delâge, A., Golub, I., Janz, S., and Lapointe, J.

Subjects
ELECTRODES, OPTICS, ETCHING, ION implantation, ELECTRIC resistors
Abstract

The electrodes in a carrier-injection-based digital optical switch are separated by a gap of less than 1 μm. Good switch performance requires minimal current spreading and effective electrical isolation of these two electrodes without perturbing the underlying guided optical fields. Two methods of such isolation are modeled and experimentally compared. One is the etching of an e-beam-defined 0.5-μm-wide trench down to an etch stop layer, and the other is the implanting of oxygen ions using the electrodes as a shadow mask. Electrical simulation results suggest that injected current magnitudes and carrier concentration profiles are similar with both the trench and the ion implant, and so they should be equally effective in preventing current flow between the two branches. However, experimental results show that ion implantation produces better switching contrasts of greater than 20 dB. We attribute this to the fact that implantation using the electrodes as a shadow mask results in an injected carrier distribution that more accurately reproduces the shape of the overlying electrode. [ABSTRACT FROM AUTHOR]

Published
2006
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