Artificial surface plasmon transmission line excitation apparatus based on micro-strip line interface

A technology for artificial surface plasma and excitation devices, which is applied to electrical components, waveguides, circuits, etc., can solve problems such as complex structures and poor connections, and achieve the effects of simple manufacturing process, cost saving, and convenient processing

Active Publication Date: 2020-01-21
SOUTHEAST UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] Purpose of the invention: The purpose of the invention is to provide an artificial surface plasmon transmission line excitation device based on a microstrip line interface, which solves the problems of poor connection with the current double conductor structure and complex structure

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  • Artificial surface plasmon transmission line excitation apparatus based on micro-strip line interface
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  • Artificial surface plasmon transmission line excitation apparatus based on micro-strip line interface

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] Such as figure 1 As shown, the artificial surface plasmon transmission line excitation device based on the microstrip line interface includes a metal ground 6, a dielectric substrate 7 is arranged above the metal ground 6, a metal strip 2 is arranged on the dielectric substrate 7, and one end of the metal strip is arranged Rectangular grooves 3 with a gradient depth, the arrangement of the rectangular grooves is the same as that of the artificial surface plasmon unit structure, and the depth of the grooves gradually increases according to the gradient until the depth of the last groove is the same as that of the artificial surface plasmon polariton unit structure. The groove depth of the surface plasmon unit structure is the same, and the lower metal ground 6 corresponding to the two sides of the metal strip 2 is provided with an asymmetric exponential metal fla...

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Abstract

The invention discloses an artificial surface plasmon transmission line excitation apparatus based on a micro-strip line interface. The apparatus is characterized in that the apparatus comprises a metal ground, a dielectric substrate is arranged above the metal ground, a metal strip is arranged on the dielectric substrate, a rectangular groove with a gradually changing depth is formed in one end of the metal strip, and asymmetric exponential metal flaring ground structures with different curvatures are arranged on the metal ground below the two sides of the metal strip correspondingly. The artificial surface plasmon excitation apparatus provided by the invention has the characteristics of high efficiency, simple design, compact structure, easiness in processing and the like. Moreover, theexcitation apparatus provided by the invention is high in universality and easy to transplant, is suitable for other single side slotted or double side slotted single-conductor artificial surface plasmon transmission lines, and has a wide application prospect in the field of novel microwave integrated circuits and devices.

Description

technical field [0001] The invention relates to artificial electromagnetism, in particular to an artificial surface plasmon transmission line excitation device based on a microstrip line interface. Background technique [0002] Surface plasmon polaritons (surface plasmon polaritons, SPPs) are a kind of surface electromagnetic wave. According to the derivation of Maxwell's equations, it can be known that they exist at the interface of two media with opposite permittivity. In the visible light frequency band, metal has a negative dielectric constant, and the free electrons inside it are in a plasma state, while the dielectric constant of a layer of air is positive, so there are surface plasmons in a natural state on the metal surface. Surface plasmons have some unique properties: obvious field enhancement effect, strong field confinement ability, and subwavelength effect. However, at lower frequencies, such as the microwave band, metals behave as ideal electrical conductors r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P3/08
CPCH01P3/081
Inventor 崔铁军闫瑞婷张浩驰
Owner SOUTHEAST UNIV
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