Evaluating Surface Impedance Models for Terahertz Frequencies
at Room Temperature

Lucyszyn, S.

doi:10.2529/piers061006115842

Cited by 33 publications

(22 citation statements)

References 9 publications

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“…The other variables have their usual meaning [1][2][3][4][5][6]. The corresponding voltage transmission coefficients are given by:…”

Section: S-parameter Analysis For Single Planar Shieldmentioning

confidence: 99%

“…This paper will investigate these parameters for operation at terahertz frequencies. To describe the intrinsic frequency dispersion in metals for THz shielding applications, the accurate classical relaxation-effect model will be used as reference [1][2][3][4][5][6]. Differences between the results calculated for the classical skin-effect and relaxation-effect models will be quantified for a single planar shield, as previously undertaken with metal-pipe rectangular waveguide structures at terahertz frequencies [4,6].…”

Section: Introductionmentioning

confidence: 99%

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CHARACTERISING ROOM TEMPERATURE THz METAL SHIELDING USING THE ENGINEERING APPROACH

Lucyszyn¹,

Zhou²

2010

PIER

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Abstract-This paper applies the recently introduced electrical engineering approach to investigate room temperature THz metal shielding, using the accurate classical relaxation-effect frequency dispersion model. It is shown that, with the simplest case of a uniform plane wave at normal incidence to an infinite single planar shield in air, all figure of merit parameters for the shield can be accurately characterized. The errors introduced by adopting the traditional and much simpler classical skin-effect model are also quantified. In addition, errors resulting from adopting well-established approximations have also been investigated and quantified. It is shown that the engineering approach allows analytical expressions to be greatly simplified and predictive equivalent transmission line models to be synthesized, to give a much deeper insight into the behaviour of room temperature THz metal shielding. For example, it is shown that figures of merit and associated errors (resulting from the use of different classical frequency dispersion models) become essentially thickness invariant when the physical thickness of the shield is greater than 3 normal skin depths.

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“…The other variables have their usual meaning [1][2][3][4][5][6]. The corresponding voltage transmission coefficients are given by:…”

Section: S-parameter Analysis For Single Planar Shieldmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

CHARACTERISING ROOM TEMPERATURE THz METAL SHIELDING USING THE ENGINEERING APPROACH

Lucyszyn¹,

Zhou²

2010

PIER

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“…For example, it has been used to validate measurements [3], alternative frequency dispersion models [4,5] and commercial electromagnetic simulation software [6]. However, 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.…”

Section: Introductionmentioning

confidence: 99%

“…The accurate characterization of frequency dispersion within normal metals at room temperature was first introduced over a century ago, by Drude [1,2], and its robustness has been tested in recent years for normal metals at room temperature from dc to terahertz frequencies [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Engineering Approach to Modelling Frequency Dispersion Within Normal Metals at Room Temperature for THZ Applications

Lucyszyn¹,

Zhou²

2010

PIER

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Abstract-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 electrical engineering concepts as tools for characterizing the intrinsic frequency dispersive nature of normal metals at room temperature. This engineering approach dramatically simplifies the otherwise complex analysis and allows for a much deeper insight to be gained into the classical relaxation-effect model. For example, it explains how wavelength can increase proportionally with frequency at higher terahertz frequencies. This is the first time that such an approach has been developed 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, superconductors, semiconductors, carbon nanotubes and metamaterials.

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“…Indeed, the robustness of this model has been tested in recent years for normal metals at room temperature from dc to terahertz frequencies [1][2][3][4]. For example, it has been used to validate measurements [1], alternative frequency dispersion models [2,3] and commercial electromagnetic simulation software [4]. However, when compared to the over-simplified classical skin-effect model (with associated variables indicated by the suffix "o"), the classical relaxationeffect modelling approach (with associated variables indicated by the suffix "R") for THz structures at room temperature can be mathematically cumbersome and not insightful.…”

Section: Introductionmentioning

confidence: 99%

THz Applications for the Engineering Approach to Modelling Frequency Dispersion within Normal Metals at Room Temperature

Lucyszyn¹,

Zhou²

2010

PIERS Online

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Abstract-The use of the accurate classical relaxation-effect model for frequency dispersion in normal metals at room temperature with THz structures can be mathematically cumbersome and not 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 relaxationeffect 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 simplified by taking an electrical engineering approach to these electromagnetic problems.

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Evaluating Surface Impedance Models for Terahertz Frequencies at Room Temperature

Cited by 33 publications

References 9 publications

CHARACTERISING ROOM TEMPERATURE THz METAL SHIELDING USING THE ENGINEERING APPROACH

CHARACTERISING ROOM TEMPERATURE THz METAL SHIELDING USING THE ENGINEERING APPROACH

Engineering Approach to Modelling Frequency Dispersion Within Normal Metals at Room Temperature for THZ Applications

THz Applications for the Engineering Approach to Modelling Frequency Dispersion within Normal Metals at Room Temperature

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