Single layer reflective, transmissive bi-directional radiation beam scanning antenna

Abstract

The invention belongs to the technical field of antennas, and in particular relates to a single-layer reflective and transmissive bidirectional radiation beam scanning antenna based on reconfigurable electromagnetic surface technology, including: a feed source and an array composed of a plurality of bidirectional phase-controlled radiation units; the feed source It is used to transmit or receive electromagnetic waves; the two-way phased radiation unit is used to modulate the phase of the reflected wave and the phase of the transmitted wave. The bidirectional phase-controlled radiation unit includes a metal layer, a dielectric plate, and a DC bias circuit layer from top to bottom, wherein the metal layer is provided with a digital control device, and the DC bias circuit layer is used to provide the digital control device with operating voltage and Control the working state of the digital control device. The reflection and transmission polarization directions of the two-way phased radiation unit are the same, and are orthogonal to the feed polarization direction. In the front transmission propagation direction, the transmission electromagnetic wave of the antenna and the electromagnetic wave polarization of the feed source incident on the front surface The direction is orthogonally isolated, and the phase control function is realized by cross-polarization.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a single-layer reflection and transmission bidirectional radiation beam scanning antenna based on reconfigurable electromagnetic surface technology. Background technique [0002] Reconfigurable reflectarrays and reconfigurable transmissive arrays are often used in beam scanning and beamforming, which have the advantages of flexible beam scanning and diverse patterns. However, these traditional design methods have disadvantages such as many and thick dielectric layers, high cost, and complex structure. [0003] On the other hand, for reconfigurable reflectarrays and reconfigurable transmissive arrays, the beam scanning direction is limited by the half-plane. For example, the beam scanning direction of the reconfigurable reflectarray is the half-plane of the reflection direction relative to the incident direction of the feed; the beam scanning direction of the reconfigurable tran...

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Problems solved by technology

However, these traditional design methods have disadvantages such as many and thick dielectric layers, high cost, and complex structure.

[0003] On the other hand, for reconfigurable reflectarrays and reconfigurable transmissive arrays, the beam scanning direction is limited by the half-plane

For example, the beam scanning direction of the reconfigurable reflectarray is the half-plane of the reflection direction relative to the incident direction of the feed; the beam scanning direction of the reconfigurable transmission array is the half-plane of the transmission direction relative to the incident direction of the feed; but now Antennas that fail to realize two-way electronically controlled beam scanning on a thin single-layer medium

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