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Metamaterial unit for encoding metamaterial antenna

A metamaterial and antenna technology, applied in the field of metamaterials, can solve the problems of large loss and low efficiency, and achieve the effect of improving overall performance and overall radiation efficiency.

Active Publication Date: 2020-01-21
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a new type of metamaterial unit, which solves the problems of large loss and low efficiency of the traditional metamaterial unit used for encoding metamaterial antennas

Method used

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  • Metamaterial unit for encoding metamaterial antenna
  • Metamaterial unit for encoding metamaterial antenna
  • Metamaterial unit for encoding metamaterial antenna

Examples

Experimental program
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Effect test

Embodiment 1

[0042] as attached Figure 1-Figure 2 and Figure 6 A metamaterial unit used for encoding metamaterial antennas is shown, including a resonant unit 1, a back cavity 2 and a transmission line structure 3 stacked sequentially from top to bottom. For the convenience of installation, the resonant unit 1, the back cavity 2 and the The transmission line structure 3 is designed to be parallel to each other and all have a plate structure, wherein:

[0043] Such as image 3The resonant unit 1 shown includes a resonant substrate 11, the middle part of the resonant substrate 11 is provided with an escape groove 12 penetrating through the thickness direction, and a sheet conductor 13 is arranged in the avoidance groove 12, and the sheet conductor 13 and the A connection gap 14 is formed between the resonant substrates 11, and two diodes 15 are symmetrically arranged at both ends of the short axis of the avoidance groove 12 in the connection gap 14, and the positive and negative poles of...

Embodiment 2

[0060] Such as Figure 6-7 A kind of equivalent circuit that is used for coding metamaterial antenna feed structure shown, comprises resistance 4, inductance 5 and is used for the metamaterial unit of coding metamaterial antenna as described in embodiment one; Said resistance 4, use The metamaterial unit of the coded metamaterial antenna is connected in series with the inductance 5 sequentially. When the diode 15 is disconnected, the equivalent circuit is composed of a resistor 4, an inductance 5 and a group of capacitors connected in series. A group of capacitors is a sheet conductor 13 connected to The gap 14 and the diode 15 are connected in parallel; when the diode 15 is turned on, the equivalent circuit is composed of the resistor 4 and the inductor 5 in series.

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Abstract

The invention discloses a metamaterial unit for encoding a metamaterial antenna. The metamaterial unit comprises a resonance unit, a back cavity and a transmission line structure; the resonance unit comprises a resonance substrate, and the middle part of the resonance substrate is provided with a clearance groove which penetrates through the resonance substrate and is internally provided with a sheet-shaped conductor; a connecting gap is formed between the sheet-shaped conductor and the resonance substrate, and two diodes are arranged in the connecting gap; the back cavity comprises a back cavity substrate, a through rectangular groove is formed in the middle of the back cavity substrate, and metal films are attached to the four inner walls of the rectangular groove respectively; the transmission line structure comprises a waveguide substrate, and a waveguide slot is formed in the middle of the metal layer. According to the invention, guided waves enter from the waveguide slot of the transmission line structure; indirect feeding of the resonance unit is achieved through the coupling effect of the back cavity, a transmission line structure and a current path of the resonance unit are directly isolated, then current flowing through the diode is restrained, ohmic loss generated when the diode is conducted is reduced, and therefore, the overall performance of the metamaterial unitused for encoding the metamaterial antenna is improved.

Description

technical field [0001] The invention belongs to the technical field of metamaterials, in particular to a metamaterial unit used for encoding a metamaterial antenna. Background technique [0002] Metamaterial technology is a cutting-edge interdisciplinary technology, and its technical fields include electromagnetic, microwave, terahertz, photonics, advanced engineering design system, communication, semiconductor and other fields. Compared with the phased array antenna of the phase-shifting network, the metamaterial antenna using the metamaterial unit greatly reduces the system complexity, volume weight and cost, and has important application value. Since its radiation performance is directly determined by the radiation performance of metamaterial elements, the study of metamaterial elements with excellent performance is of great significance for better research on metamaterial antennas. [0003] The structure of the metamaterial unit currently used for encoding metamaterial ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/50H01P3/00H01P7/00
CPCH01P3/00H01P7/00H01Q1/36H01Q1/50
Inventor 林铭团邓博文黄贤俊刘培国
Owner NAT UNIV OF DEFENSE TECH
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