A controllable plasmonic metamaterial narrowband absorber with honeycomb distribution

Abstract

The invention discloses a controllable plasma metamaterial narrow-band wave absorber distributed in a honeycomb type. Its periodic structure unit adopts a unique hexagonal structure of the honeycomb type, including a bottom metal reflection plate and a dielectric substrate above the metal plate and The solid-state plasma resonance unit, the solid-state plasma is realized by an array of PIN units, and the programmable logic array loaded at both ends is used to control and excite the PIN unit array, so as to obtain solid-state plasma. The plasma metamaterial narrow-band wave absorber has a good absorption effect on TE polarized waves, and has a good absorption effect on electromagnetic waves incident at a large angle, and controls the excitation area of ​​the resonant unit composed of solid-state plasma through programming. Realize the excitation of different resonant units, so as to achieve the purpose of dynamic regulation of different frequencies of the absorber, realize the narrowband absorption of the absorber, and the operating frequency of the absorber can cover the entire X-band when the excitation area is selected properly .

Description

technical field [0001] The invention relates to a controllable plasma metamaterial narrow-band wave absorber with honeycomb distribution, which belongs to the field of radio communication and microwave devices. Background technique [0002] With the development of information technology, microwave devices have been widely used in various systems in communication. Such as the antenna at the transmitting end, the electromagnetic shielding box, etc. Preventing electromagnetic interference and electromagnetic stealth have broad application prospects in military and civilian fields. Electromagnetic absorber is a kind of microwave device designed to meet this requirement, and it has been more and more widely used in the field of communication. In the military field, improving the electromagnetic stealth characteristics of weapons and equipment and reducing the probability of being detected by the enemy is a prerequisite for winning modern warfare. In the civilian field, basic d...

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Problems solved by technology

However, it is difficult to obtain a tunable absorption spectrum for a metamaterial absorber in the traditional sense. To obtain a tunable absorption spectrum, a large number of lumped components have to be introduced, the control circuit is complicated, and it is not conducive to integration and chip-based integrated manufacturing.

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