Two-dimensional scanning varactor active super-surface radome

Abstract

The invention discloses a two-dimensional scanning varactor active super-surface radome comprising a two-dimensional scanning array and gaskets. The two-dimensional scanning array is multi-layer varactor active super surfaces, and the layers are separated by the gaskets. The two-dimensional scanning array consists of two one-dimensional scanning arrays including an x-direction scanning array and ay-direction scanning array superposed in the z direction, the y direction is the incident wave polarization direction, the z direction is the incident wave propagation direction, and the varactor bias line directions of the two one-dimensional scanning arrays are both x direction. The radome achieves two-dimensional scanning by changing the bias voltage of the varactor in the two-dimensional scanning array, and the two-dimensional scanning array achieves two-dimensional scanning through the one-dimensional scanning arrays achieved by two sets of varactor active super surfaces with orthogonalscanning directions superimposed in the longitudinal direction. According to the method, the process complexity and the implementation cost of the super surfaces in the large-scale two-dimensional scanning array can be effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of millimeter wave and terahertz communication, and in particular relates to a two-dimensional scanning varactor active metasurface radome. Background technique [0002] Millimeter waves are electromagnetic waves with a frequency range of 30 to 300 GHz and a wavelength of 10 mm to 1 mm. Terahertz is a frequency band with a frequency range of 300 GHz to 3 THz, and its wavelength is 1 mm to 0.1 mm. The millimeter wave band and the terahertz frequency band have the characteristics of wide frequency band, high transmission rate, small equipment size, small attenuation, and strong penetrating power. They are suitable for near-field point-to-point communication and satellite communication. Antennas applied to the millimeter wave frequency band can better meet the application scenarios, that is, meet the requirements of high convergence and high gain. [0003] The metasurface is a structure whose vertical thickne...

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Problems solved by technology

[0005] The purpose of the present invention is to address the deficiencies in the prior art, and provide a two-dimensional scanning varactor active metasurface radome working in the millimeter wave and terahertz frequency bands, which is used to solve the problem of existing two-dimensional scanning varactor active metasurface radome. The number of bias lines in the surface is the same as the number of cells, so the number of bias lines increases with the square of the array size, and there are too many bias lines in large-scale varactor active metasurface arrays.

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