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Lumped elements circuit of terahertz fishnet-like arrays with composite dispersion
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10.1063/1.3455994
/content/aip/journal/jap/108/1/10.1063/1.3455994
http://aip.metastore.ingenta.com/content/aip/journal/jap/108/1/10.1063/1.3455994

Figures

Image of FIG. 1.
FIG. 1.

Optical microscope view of the surface of the fabricated prototype, units in (a), and unit cell schematic of the arrayed five layer stacked microstructure with design dimensions and the impinging wave polarization (b). Dimensions as follows: , , , and (average value).

Image of FIG. 2.
FIG. 2.

Transmittance and reflectance characteristics of a single metallic layer structure. Results show a comparison between full-wave simulations and equivalent circuit.

Image of FIG. 3.
FIG. 3.

Transmittance and reflectance characteristics of a double layer stacked structure. Results show a comparison between full-wave simulations and equivalent circuit.

Image of FIG. 4.
FIG. 4.

Maps of the E-field in the center of the spacer BCB layers corresponding to the ground LH branch [468 GHz–(a)], to the first RH branch [554 GHz–(b)], and to the second RH branch [734 GHz–(c)].

Image of FIG. 5.
FIG. 5.

Schematic equivalent circuit modeling the unit cell of a perforated single metallic plate structure (a), and equivalent circuit modeling the coupling mechanism between two stacked perforated metallic plates (b). Insets show equivalent circuits to, respectively, account for metallic losses in the inductive element and for dielectric losses in the spacers coupling circuit formed by and .

Image of FIG. 6.
FIG. 6.

(a) Transmittance and reflectance for a five layer stacked structure in magnitude and (b) in unwrapped transmission phase. Equivalent circuit response is displayed with solid lines and measured results are displayed with symbols.

Image of FIG. 7.
FIG. 7.

Transmittance for a single layer structure with in inset the dominant elements in the equivalent circuit description as a function of the frequency range. In (b), transmittance for a double layer structure (two metallic plates). The dominant elements of the equivalent circuits are displayed for each resonant feature associated to the coupling modes and the respective dominant element of the metallic plates. This qualitative description is defined either as left handed for the first coupling mode or right handed for the second and third coupling modes.

Tables

Generic image for table
Table I.

Equivalent circuit values for the five layer microstructure.

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/content/aip/journal/jap/108/1/10.1063/1.3455994
2010-07-13
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Lumped elements circuit of terahertz fishnet-like arrays with composite dispersion
http://aip.metastore.ingenta.com/content/aip/journal/jap/108/1/10.1063/1.3455994
10.1063/1.3455994
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