Ultra-wideband amplitude-phase independent reconfigurable metasurface based on single PIN tube control

By integrating a single PIN diode in the electromagnetic metasurface unit, combining a tightly coupled antenna and microstrip circuit, the amplitude and phase of ultra-wideband electromagnetic waves are independently adjustable, solving the problems of high power consumption, high cost and poor performance in traditional active metasurfaces, and achieving low power consumption, low cost and high performance ultra-wideband electromagnetic functions.

CN119315281BActive Publication Date: 2025-03-21SOUTHEAST UNIV
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Patent Information

Application Number
CN202411856173.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-12-17
Publication Date
2025-03-21
Estimated Expiration
2044-12-17

AI Technical Summary

Technical Problem

When traditional active electromagnetic metasurfaces realize the amplitude phase independent adjustable function, they have high power consumption, high cost, poor performance, and the relative bandwidth does not exceed 80%. There are no less than 2 active devices required to be integrated within the unit.

Method used

The ultra-wideband unit based on a single PIN diode is adopted to control the scattering of ultra-wideband electromagnetic waves through tightly coupled antennas and microstrip circuits. The on-off state of the PIN diode is regulated through DC bias voltage, so that the amplitude and phase can be independently adjustable.

Benefits of technology

It realizes the ultra-wideband amplitude phase independent adjustable electromagnetic function with low power consumption, low cost and excellent performance. Only one PIN diode is integrated in the unit, and a relative working bandwidth of more than 80%.

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Abstract

The present invention provides an ultra-wideband amplitude-phase independent reconfigurable metasurface based on single PIN tube regulation, which is composed of metasurface units (hereinafter referred to as "units") using only one PIN diode. A PIN diode is integrated into the microstrip transmission circuit on the back of the unit, so that the unit has the ultra-wideband amplitude-phase independent adjustable characteristics. Continuous control of the reflection amplitude and 1-bit control of the reflection phase can be achieved by continuously changing the voltage across the PIN diode. Different amplitude and phase controls are performed on the units in the reflection array to achieve functions such as low scattering, beam deflection, beam focusing, and target simulation. The present invention has the advantages of ultra-large bandwidth, independent and adjustable electromagnetic reflection amplitude and phase, low profile, low manufacturing cost, and easy system integration, and has important application prospects in the field of radar electromagnetic target characteristic simulation.
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