Surface plasmon coupler based electromagnetic energy collecting apparatus

Abstract

The invention discloses a surface plasmon coupler based electromagnetic energy collecting apparatus. The electromagnetic energy collecting apparatus comprises a dielectric substrate, and a microstrip line and a super surface which are arranged on the upper surface of the dielectric substrate, wherein the super surface is formed by more than one longitudinally-distributed super surface unit with gradient refractive indexes and the same structure; the refractive indexes are decreased in a gradient manner from a direction close to the microstrip line to a direction far from the microstrip line; and the microstrip line is formed by more than one groove-curving metal band. According to the electromagnetic energy collecting apparatus, the efficient coupling of space propagation waves and surface plasmon is realized; the energy of the surface waves is reinforced through superposition of the same-phase surface waves, and the power density of the incident space electromagnetic waves is increased; the same-phase convergence of the surface waves can be reinforced by using multiple groove-curving microstrip lines; an converging effect on the space weak electromagnetic energy is realized; the power density of the incident space electromagnetic waves is increased; and the input power of a rectifying circuit is further increased, so that the rectifying efficiency of the overall system is improved consequently.

Description

technical field [0001] The invention relates to an electromagnetic energy collection device, in particular to an electromagnetic energy collection device based on a surface plasmon coupler, which belongs to the technical field of new artificial electromagnetic materials, energy collection and recovery, and is applied to the Internet of Things, radio frequency identification (RFID ) and wireless sensor networks (WSN) and other fields. Background technique [0002] As the two core technologies of the Internet of Things, radio frequency identification (RFID) and wireless sensor network (WSN) have attracted great attention from the international academic and business circles, and government departments of various countries are also actively promoting the development of the Internet of Things. Internet of things technologies such as WSN and RFID have penetrated into various fields: such as national defense security, space detection, environmental monitoring, etc. RFID and WSN no...

AI Technical Summary

Problems solved by technology

However, the power density of space electromagnetic waves is low at present, and it is difficult to achieve efficient electromagnetic energy collection.

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