Ultra-wide-band large-capacity terahertz metamaterial random radiation antenna

A random radiation and metamaterial technology, applied in the field of metamaterial aperture imaging antennas, can solve the problems that active metamaterial random radiation antennas are difficult to apply to the terahertz frequency band, the detection mode is highly correlated, and the cost of active devices is expensive. Effects of low detection mode correlation, large detection mode capacity, low correlation design
CN109768385AActive Publication Date: 2019-05-17XI AN JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Publication Date
2019-05-17

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Abstract

The invention discloses an ultra-wide-band large-capacity terahertz metamaterial aperture imaging antenna. The device comprises a terahertz metamaterial random radiation hole net and a terahertz ultra-wide-band variable-coupling feed system, wherein the terahertz metamaterial random radiation hole net is composed of a large quantity of various metamaterial unit modules; the terahertz ultra-wide-band variable-coupling feed system comprises a broadband feed module, a matching module and a terahertz energy transmission module; the broadband feed module receives energy fed from a feed source and transmits the energy to the matching module; the matching module realizes matching between the broadband feed module and the terahertz energy transmission module; and the terahertz energy transmissionmodule makes fed energy uniformly cover the whole terahertz metamaterial random radiation hole net, so that each metamaterial unit module can selectively couple and radiate the energy from the terahertz energy transmission module. The antenna meets the demand for a measurement pattern required for realizing super-resolution large-area non-coherent imaging.
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Description

technical field

[0001] The invention relates to the field of metamaterial aperture imaging antennas, in particular to an ultra-wideband and large-capacity terahertz metamaterial random radiation antenna. Background technique

[0002] The existing metamaterial random radiating antennas are mainly divided into two types, passive metamaterial aperture random radiating antennas and active metamaterial aperture random radiating antennas. Both types of random radiation antennas irradiate the metamaterial surface with electromagnetic waves, and generate random beams by random reflection or random transmission on the metamaterial surface. The passive metamaterial aperture random radiating antenna uses a waveguide or a resonant cavity as a feeding system, and distributes the energy fed by the coaxial line / waveguide evenly in the waveguide or resonant cavity. Randomly arranged on the metamaterial aperture, the metamaterial units with different resonant frequencies selectively transmi...

Claims

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