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Non-magnetic artificial SPP isolator based on parametric amplification

A parametric amplifier and parametric amplification technology, which is applied to waveguide devices, electrical components, circuits, etc., to achieve the effects of simple operation, strong field binding ability, and low cost

Active Publication Date: 2022-04-15
SOUTHEAST UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Due to the advantages of strong field confinement ability, low loss and small size of artificial surface plasmon devices, they have attracted extensive attention. Research

Method used

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  • Non-magnetic artificial SPP isolator based on parametric amplification
  • Non-magnetic artificial SPP isolator based on parametric amplification
  • Non-magnetic artificial SPP isolator based on parametric amplification

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Embodiment Construction

[0024] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] Artificial SPP isolator of the present invention such as figure 1 As shown, it includes a dielectric substrate, a metal ground, an artificial SPP parametric amplifier loaded with a varactor, an artificial local SPP resonator, and a passive artificial SPP waveguide. In addition, the excitation input of the pump wave is always at port 1, and the excitation input ports of the forward and backward signal waves are at port 1 and port 3, respectively.

[0026] After design, the unit structure of the artificial SPP parametric amplifier, the artificial local SPP resonator, and the unit structure of the artificial SPP waveguide figure 2 (a)-2(c). The unit structure parameter of described artificial SPP parametric amplifier is s=0.25mm, a=1.25mm, a 1 =0.5mm, a 2 = 0.4mm, d = 1mm, d 0 = 1.5mm, d 1 = 1 mm, d 2 = ...

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Abstract

The invention discloses a non-magnetic artificial SPP isolator based on parametric amplification. The isolation structure is mainly composed of a metal ground layer on the bottom layer, a space layer dielectric substrate and a metal structure on the uppermost layer, wherein the metal structure is composed of an artificial SPP parameter amplifier loaded with a varactor, an artificial local SPP resonator and a passive artificial SPP waveguide structure. By regulating and controlling the dispersion behavior of the artificial SPP parametric amplifier unit structure loaded with the varactor, forward signal waves are amplified under the condition of phase matching, the amplified signal waves are coupled to a passive artificial SPP waveguide below through the artificial local SPP resonator, and then transmission of backward signal waves is isolated. Due to the advantages of easy integration and low loss of the non-magnetic artificial SPP isolator, the non-magnetic artificial SPP isolator has important application in radar protection and wireless communication systems.

Description

technical field [0001] The invention relates to a non-magnetic artificial SPP isolation technology based on parametric amplification. By designing the unit structure of the artificial SPP, the phase constant of the forward signal wave is consistent with the resonance frequency of the artificial local SPP under the condition of phase matching, and the amplification is realized. The forward signal wave can be better transmitted, while the transmission of the backward signal wave is suppressed, and then the isolation of the backward signal wave is realized, which belongs to the field of communication, radar and new artificial electromagnetic materials. Background technique [0002] To protect devices from reflected EMI, non-reciprocal microwave circuit devices are worth exploring. For the traditional methods of realizing non-reciprocity, nothing more than using magnetic materials, loading active non-reciprocal devices, and utilizing space-time modulation. However, due to their...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/36
CPCY02D30/70
Inventor 崔铁军高欣欣张婧婧马骞崔文怡
Owner SOUTHEAST UNIV
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