The effect of coupling current and equivalent electrical length in terahertz modulator

In this paper, a point has been proposed that coupling current exist in terahertz devices, especially some typical structures, such as split ring resonators. Gaps are no longer treated as capacitances are not exact. By varying the width of gap, a kind of relationship between coupling ratio and gap&#...

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Main Authors: Qian Nan Wu, Qi Fu, Kun Su
Format: Conference Proceeding
Language:English
Subjects:
Capacitance
coupling current
Couplings
Current distribution
electrical length
Magnetic materials
Metals
Metamaterials
Resonant frequency
terahertz device
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Qi Fu
Kun Su
description In this paper, a point has been proposed that coupling current exist in terahertz devices, especially some typical structures, such as split ring resonators. Gaps are no longer treated as capacitances are not exact. By varying the width of gap, a kind of relationship between coupling ratio and gap's width has been made. And it has been testified to be approximately suitable in some other structures. Equivalent electrical length has been brought in to explain how the currents with the same orient cause resonance, of which fabricate a frequency band, via S parameter. Our work may open another method to explain electromagnetic wave resonating in metal structure.
doi_str_mv 10.1109/ASEMD.2013.6780825
format conference_proceeding
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subjects Capacitance
coupling current
Couplings
Current distribution
electrical length
Magnetic materials
Metals
Metamaterials
Resonant frequency
terahertz device
title The effect of coupling current and equivalent electrical length in terahertz modulator
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