Reflection/absorption surface for terminating filter circuit to control electrical characteristics and design method
A filter circuit and absorption surface technology, which is applied to the reflection/absorption surface of the terminal filter circuit to control the electrical characteristics and its design field, can solve the problems of steepness, difficulty in application, and high overall structural profile, and achieve the effect of increasing the degree of freedom
Active Publication Date: 2021-01-15
NANJING UNIV OF SCI & TECH
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Problems solved by technology
Moreover, in the frequency selective surface structure, in order to obtain steep out-of-band suppression characteristics, it is necessary to use a multi-layer structure, which makes the overall structure section higher and is not easy to apply
Method used
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[0055] In this embodiment, a dual-polarized, polarization-angle-independent reflective / absorbing surface is used as an example to control electrical characteristics using a termination filter circuit. The surface has a reflection frequency band and an absorption frequency band. When the incident wave is a line with any polarization angle When the wave is polarized, reflection / absorption effect can be achieved. When this surface is used as an antenna floor, the out-of-band radar cross section (RCS) can be effectively reduced. Below we combine the figure 1 Give further details.
[0056] Exemplarily, the receiving antenna array and filter circuit used in this embodiment are only one type of the present invention, and reflection / absorption surfaces of other structures realized by the principle of the present invention are within the protection scope of this patent. For example, the receiving antenna array can use a magnetoelectric dipole antenna, and the filter circuit can use a...
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The invention discloses a dual-polarization reflection / absorption surface utilizing a terminating filter circuit to control electrical characteristics and a design method thereof. The surface comprises a dual-polarization receiving antenna array, a filter circuit and an absorption resistor, wherein the receiving antenna array is used for transmitting received electromagnetic wave signals to the filter circuit, the filter circuit is used for realizing regulation and control of amplitude, phase and frequency characteristics of the surface, and the absorption resistor is connected with a filter circuit terminal. The surface is advantaged in that the antenna can be used as a dual-polarized absorption type frequency reflection surface, the reflection / absorption surface is provided with one reflection frequency band and one or more absorption frequency bands, when incident waves are linearly polarized waves with any polarization angle, the reflection / absorption effect can be achieved, and when the reflection / absorption surface is used as an antenna floor, the out-of-band radar cross section (RCS) can be effectively reduced.
Description
technical field [0001] The invention belongs to the field of frequency reflection / absorption surfaces, in particular to a reflection / absorption surface with a termination filter circuit to control electrical characteristics and a design method thereof. Background technique [0002] The frequency selective surface is a one-dimensional or two-dimensional infinite periodic array composed of independent units, which is essentially a spatial filter circuit, which is used to select the frequency of incident electromagnetic wave transmission and reflection to achieve band-pass or band-stop filtering characteristics . With the development of wireless communication systems, frequency selective surfaces have important applications in spatial filtering, partially reflective surfaces, and radar stealth. [0003] In recent years, reducing radar out-of-band scattering by using absorbable frequency-selective surfaces has become an effective method to reduce RCS. In the existing design of...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01Q15/00H01Q21/06
CPCH01Q15/0046H01Q21/061
Inventor 吴文王兵宗志园于银华郭欣司马博羽汪敏方大纲
Owner NANJING UNIV OF SCI & TECH