1. Institute for National Measurement Standards, National Research Council, Ottawa, Ont. K1A 0R6, Canada
2. Department of Electrical and Computer Engineering, Queen's University, Kingston, Ont. K7L 3N6, Canada
3. Electrical Engineering, Royal Military College of Canada, Kingston, Ont. K7K 7B4, Canada
4. Advanced Technology Laboratory, Nortel Technology, Ottawa, Ont. K1Y 4H7, Canada
5. Institute for Microstructural Sciences, National Research Council, Ottawa, Ont. K1A 0R6, Canada
6. Defence Research Establishment Ottawa, Department of National Defence, Ottawa, Ont. K1A 0K2, Canada