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A 1-bit digitally encoded metamaterial antenna unit

An antenna unit and digital coding technology, applied to antennas, antenna parts, electrical components, etc., can solve the problems of reduced quality factor of equivalent resonant circuit, increased design difficulty, reduced reflection efficiency of metamaterial antenna unit, etc., to maintain radiation benefit effect

Active Publication Date: 2022-07-15
西安雷通微系统技术有限公司
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Problems solved by technology

Commonly used bandwidth widening methods include: electromagnetic coupling, slotting technology, etc. The basic principle is to reduce the quality factor of the equivalent resonant circuit to achieve an average amplitude-frequency response within a certain bandwidth. Using the above method, the bandwidth can be achieved to a certain extent. Broadening, but at the same time lead to a reduction in the reflection efficiency of the metamaterial antenna unit and increase the design difficulty, it is not suitable for digitally encoded metamaterial antenna units

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  • A 1-bit digitally encoded metamaterial antenna unit
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  • A 1-bit digitally encoded metamaterial antenna unit

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Embodiment Construction

[0038] The embodiments of the present invention will be described in detail below in conjunction with the examples, but those skilled in the art will understand that the following examples are only used to illustrate the present invention and should not be regarded as limiting the scope of the present invention.

[0039] Due to electromagnetic wave dispersion, the reflection phase cannot be switched strictly at 0 / 180 degrees. Therefore, in order to characterize the consistency of phase modulation, the present invention introduces the concept of δ-phase bandwidth, which is defined as the phase difference between different frequencies at 180±δ during switching. The bandwidth range within the range.

[0040] refer to figure 1 , Snell's theorem means: the incident wave from point A to point B, when passing through the junction of the metal layer 3 of the digitally encoded metamaterial antenna element and the dielectric layer (substrate), will have a phase mutation at different pos...

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Abstract

The invention discloses a 1-bit digital coding metamaterial antenna unit, comprising a first substrate and a second substrate, a metal layer is arranged on the upper surface of the first substrate, and a space between the lower surface of the first substrate and the upper surface of the second substrate is A grounding layer is provided, and a bias circuit layer is arranged on the lower surface of the second substrate; via holes are correspondingly opened on the grounding layer and the first substrate respectively, the metal layer is connected to the bias circuit layer through the via holes through conductive parts, and the metal layer is connected to the bias circuit layer. The ground layers are connected by diodes; the ground layers are grounded; the conductive parts include horizontally arranged non-uniform transmission parts and vertically arranged conductive rods. The invention changes the propagation path of the electromagnetic wave by designing the non-uniform transmission part, and realizes the regulation of the phase of the metamaterial; and through the optimization of the structure parameters, the function of broadening the phase-frequency response bandwidth is realized on the premise of ensuring other performances of the antenna.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a 1-bit digitally encoded metamaterial antenna unit, which can be used in communication and radar systems. Background technique [0002] Digitally encoded metamaterial antenna units have the advantages of low cost, easy processing, and simple design. They have important application prospects in multi-functional antennas and reduced radar cross-sectional area. Therefore, they are widely used in communications, radar imaging and other fields. In addition, the digitally encoded metamaterial antenna unit is a single-channel analog array, which can be equivalent to a multi-channel digital array under the premise of great cost savings, performing spatial beamforming, waveform modulation and other functions. However, as a special metamaterial antenna unit, it has dispersion characteristics, and the propagation speed and refraction coefficient of electromagnetic waves of different frequ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/36H01Q15/00
CPCH01Q1/364H01Q15/0086
Inventor 马晖王国强高思哲陈渤刘宏伟
Owner 西安雷通微系统技术有限公司
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