Monolayer reflective and transmissive bidirectional beam scanning antenna

Abstract

The invention belongs to the technical field of antennas, in particular to a single-layer reflective and transmissive bidirectional radiation beam scanning antenna based on a reconfigurable electromagnetic surface technology, comprising a feed source and an array composed of a plurality of bidirectional phased radiation units; A feed for transmitting or receiving electromagnetic waves; A bi-directional phased radiation element is used to modulate the phase of the reflected and transmitted waves. The bidirectional phased radiation unit comprises 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 for supplying an operating voltage to the digital control device and controlling an operating state of the digital control device. The reflection and transmission polarization directions of the bidirectional phased radiation unit are the same and orthogonal to the polarization direction of the feed source. In the transmission propagation direction of the front surface, the transmission electromagnetic wave of the antenna and the polarization direction of theelectromagnetic wave incident on the front surface of the feed source are orthogonally isolated, and the cross polarization is adopted to realize the phase control function.

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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