Portable radar signal modulator based on phase modulation surface

Abstract

The invention discloses a portable radar signal modulator based on a phase modulation surface. The modulator comprises a signal modulator main body which is a phase modulation surface, and a carryingplatform main body which is a tripod-like structure. The phase modulation surface is composed of an active impedance layer, a conductor back plate and a foam medium. The active impedance layer adopts"bow tie type" metal units, and a BA585 type PIN diode is loaded between two adjacent units. The foam medium is located between the active impedance layer and the conductor back plate. The conductor back plate is made of a metal sheet capable of totally reflecting an electromagnetic wave. The tripod-like structure consists of a triangular support frame, a rotating shaft and a rotating telescopic clamp. The modulator can adapt to different frequency bands of an electromagnetic wave signal, can realize carrying of a phase modulation surface product, and can adapt to a dimensional change; pitching and azimuth omnibearing rotation can be achieved, and height adjustment is flexible and controllable; the modulator does not react strongly to an incident electromagnetic wave; an overall structureis flexible and portable; a product structure is simple; and electromagnetic wave active radiation can be avoided and a detected probability is reduced.

Description

technical field [0001] The invention relates to a portable radar signal modulator based on a phase modulation surface, which has the characteristics of compactness, portability, and flexible performance. The portable radar signal modulator belongs to the field of radar signal modulation devices. Background technique [0002] As a special frequency selective surface structure that can change the reflection characteristics of electromagnetic waves, the phase modulation surface can dynamically control the characteristics of its body reflecting electromagnetic echoes. It redistributes the incident wave energy in a larger frequency range by applying phase modulation to the incident electromagnetic wave signal, which can not only achieve target stealth, but also produce realistic targets within the radar bandwidth. Researchers have carried out a lot of preliminary theoretical research , and is gradually carrying out the development and test verification of phase modulation surface...

AI Technical Summary

Problems solved by technology

[0003] The application feasibility and performance reliability of the phase modulation surface in the field of signal modulation have been fully proved, but because the manufacturing process of the phase modulation surface will affect its own performance to a certain extent, it often leads to theoretical analysis results and actual products. There are certain differences in performance, so the experimental verification of the performance of the phase modulation surface is particularly critical

Under this practical demand, the present invention designs a portable general-purpose radar signal modulator based on a phase modulation surface. The modulator takes the phase modulation surface as the main body and uses a tripod-like structure as the support body. At present, there is no relevant experimental modulator. see public report

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