When compared to the over-simplified classical skin-effect model, the accurate classical relaxation-effect modelling approach for THz structures at room temperature can be mathematically cumbersome and not insightful. This paper introduces various interrelated engineering concepts as tools for characterizing the intrinsic frequency dispersive nature of normal metals at room temperature. This engineering approach dramatically simplifies otherwise complex analysis and allows for a much deeper insight to be gained into the classical relaxation-effect model. For example, it explains simply how wavelength increases with frequency at higher terahertz frequencies. This is the first time that such an approach has been applied for the modelling of intrinsic frequency dispersion within a metal. While the focus has been on the characterization of normal metals (magnetic and non-magnetic) at room temperature, it is believed that the same methodology may be applied to metals operating in anomalous frequency-temperature regions, semiconductors, semiconductors, carbon nanotubes and metamaterials.
2. Drude, P., "Zur elektronentheorie der metalle; II. Teil. galvanomagnetische und thermomagnetische effecte," Annalen Der Physik, Vol. 308, No. 11, 369-402, 1900.
3. Lucyszyn, S., Investigation of anomalous room temperature conduction losses in normal metals at terahertz frequencies, IEE Proceedings --- Microwaves, Antennas and Propagation, Vol. 151, No. 4, 321-329, 2004.
4. Lucyszyn, S., "Investigation of Wang's model for room temperature conduction losses in normal metals at terahertz frequencies," IEEE Trans. on Microwave Theory Tech., Vol. 53, 1398-1403, 2005.
5. Lucyszyn, S., "Evaluating surface impedance models for terahertz frequencies at room temperature," PIERS Online, Vol. 3, No. 4, 554-559, 2007.
6. Zhou, Y. and S. Lucyszyn, "HFSSTM modelling anomalies with THz metal-pipe rectangular waveguide structures at room temperature," PIERS Online, Vol. 5, No. 3, 201-211, 2009.
7. Lucyszyn, S. and Y. Zhou, "THz applications for the engineering approach to modelling frequency dispersion within normal metals at room temperature," PIERS Online, Vol. 6, No. 3, 293-299, Feb. 2010.
8. Kraus, J. D., Electromagnetics, 4th Ed., 587-588, McGraw-Hill, 1991.
9. Pond, J. M., J. H. Claassen, and W. L. Carter, "Kinetic inductance microstrip delay lines," IEEE Transactions on Magnetics, Vol. 23, No. 2, 903-906, 1987.
10. McDonald, D. G., "Novel superconducting thermometer for bolometric applications," Appl. Phys. Lett., Vol. 50, No. 12, 775-777, 1987.