Strong coupling between elements and ultra-wide adjustable range active frequency selective surface

Abstract

The invention relates to frequency selection surfaces, in particular to an interelement strong coupling ultra-wide range-adjustable active frequency selection surface. A variable capacitance diode is directly loaded with bias voltage to change the capacitance value of the variable capacitance diode, and meanwhile interelement strong coupling is utilized for achieving moving of the whole structure in a resonance frequency ultra-wide range. A dielectric slab, metal layers, the variable capacitance diode and an inductor are arranged. The metal layers, the variable capacitance diode and the inductor are arranged on the front surface of the dielectric slab, the metal layers are vertical strip-shaped metal layers, the vertical strip-shaped metal layers are loaded with two horizontal strip-shaped metal layers with different lengths in the horizontal direction, and the distance between the vertical strip-shaped metal layers and the two horizontal strip-shaped metal layers with the different lengths is half of the length of the long strip-shaped metal layer in the two horizontal strip-shaped metal layers with the different lengths. The two horizontal strip-shaped metal layers with the different lengths are connected through the variable capacitance diode, the vertical strip-shaped metal layers are connected through the inductor, and the vertical strip-shaped metal layers are in seamless connection with the horizontal strip-shaped metal layers.

Description

technical field [0001] The invention relates to a frequency selective surface, in particular to an active frequency selective surface with strong coupling between units and an ultra-wide adjustable range. Background technique [0002] Frequency selective surface (FSS) has good filtering properties for electromagnetic waves transmitted in space, and is widely used in engineering, mainly used in military and civilian communications, such as radar, radome, aircraft, etc., and its unique electrical properties are also used in satellite communications Fields are widely used, such as electromagnetic compatibility, military communications, electronic countermeasures and other fields. [0003] Once the passive frequency selective surface is processed, its characteristics such as resonance frequency and bandwidth cannot be changed, so it cannot adapt to the changing electromagnetic environment and exert its good resonance characteristics. In order to overcome this shortcoming, some ...

AI Technical Summary

Problems solved by technology

It solves the problem that after the passive frequency selective surface is processed, its resonance frequency and bandwidth cannot be changed, so it cannot adapt to the changing electromagnetic environment.

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