Active metamaterial adjustable wave absorber based on ITO (Indium Tin Oxide) and variable capacitance diode

• Main Authors: LIU YUNQING, GAO MANDI, YOSHINAKA WATARU, CAO WEI, SONG YIDA, REN XIAOLE
• Format: Patent
• Language: Chinese; English
• Published: 19.07.2024
• Subjects: ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; ELECTRICITY

The invention belongs to the technical field of electromagnetic wave control and stealth, and particularly relates to an active metamaterial adjustable wave absorber based on ITO (indium tin oxide) and variable capacitance diodes, which comprises an active adjustable metasurface, an ITO film layer, a dielectric substrate, a communication cylinder, air, a dielectric substrate and a metal reflecting layer from top to bottom. The active adjustable metasurface comprises a metal resonance layer and a variable capacitance diode embedded in the metal resonance layer, and the communication cylinder gradually extends to the metal reflection layer from the metal resonance layer. The method of combining the ITO film and the variable capacitance diode is adopted, the wave absorbing bandwidth is widened, the wave absorbing frequency is adjusted by changing the bias voltage of the variable capacitance diode, dynamic adjustment in the frequency band of 2-5 GHz is achieved, and more complex electromagnetic environment proble