Wave-absorbing characteristic regulation and control method for regulating and controlling local strain of flexible metamaterial film
A material film and metamaterial technology, applied in the field of flexible electromagnetic metamaterials, can solve the problems of increasing the risk of discovery-confirmation-tracking-location, increasing the risk of being shot down, etc., and achieve uniform and controllable overall strain and uniform elongation strain and precise, compact and simple overall structure
Pending Publication Date: 2020-03-24
AIR FORCE UNIV PLA
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Problems solved by technology
If the wave-absorbing metamaterial of the attacking aircraft does not have broadband wave-absorbing characteristics, or the ability to adjust the main frequency band of wave-absorbing in a timely manner, it will increase the risk of being discovered-confirmed-tracked-located by the opponent's radar, thereby increasing the probability of being shot down
Moreover, traditional metamaterial substrates are mainly rigid plastic plates with high rigidity, which lack the ability to adjust the key dimensions of metamaterial structural units in real time. However, flexible thin films as substrates have attracted attention in recent years. A new approach to light, thin and flexible materials
At present, there is no related technology to realize the control of the key dimensions of the structural units of metamaterials through flexible thermo-shrinkable films.
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[0023] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0024] The small circle at the gap of the C-shaped resonant ring represents the heating unit, which is connected with the power supply and the switch through the printed wire. figure 1 and figure 2The difference lies in whether the energy regulation system composed of the wire array and the heating unit and the C-shaped resonant ring are on the same side surface of the heat shrinkable film. Not being on the same surface can give the wire array a larger space for design optimization, and is more conducive to the arrangement of the wire array.
[0025] Compared with the circuit, the optical path only needs one optical fiber to transmit the light energy to the heating unit, that is, the small circular unit at the gap of the resonant ring. The heat is generated by the light, and then the size of the notch of the resonan...
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The invention discloses a wave-absorbing characteristic regulation and control method for regulating and controlling local strain of a flexible metamaterial film, which comprises the following steps of superposing or folding a plurality of layers of flexible electromagnetic wave-absorbing metamaterial films into a preset shape, and forming the key size of a metamaterial structure unit in an arrayorganization mode through heating regulation and control, namely, the key size can be used for broadband electromagnetism. The heating power and the temperature rising speed are controlled through theelectric power, and the key size of the metamaterial structure unit on the thermal shrinkage film is adjusted by utilizing the electric heating temperature rising, so that the regulation and the control on the wave absorbing characteristic peak value and the wave absorbing main frequency band of the flexible metamaterial film are realized. Or the energy of the high-power light source can be transmitted to a key part which has a significant influence on the wave absorbing characteristic through the light-guide fiber, the key part is heated and shrunk through photo-induced heating, and the power of the transmitted light becomes a control parameter for regulating and controlling the shrinking behavior.
Description
technical field [0001] The invention belongs to the technical field of flexible electromagnetic metamaterials, and relates to a wave-absorbing property control method for adjusting the local strain of a flexible metamaterial thin film. Background technique [0002] As electromagnetic waves are more and more widely used in rapidly developing industries such as aircraft navigation, mobile phone communications, and wireless networks, electromagnetic wave interference and even electromagnetic wave pollution have become increasingly prominent; The rapid increase has caused extensive demand for electromagnetic shielding materials, such as electromagnetic wave selection frequency absorption, reduction of electromagnetic interference, improvement of electromagnetic compatibility of equipment, elimination or reduction of electromagnetic radiation pollution, etc. In the military field, with the improvement of radar detection technology and the enhancement of detection capabilities, th...
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IPC IPC(8): H01Q17/00
CPCH01Q17/007
Inventor丁日显汤福静魏立安姚方
OwnerAIR FORCE UNIV PLA