Plasma Shield for Radar Antenna EMP Protection
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Solution Overview
Problem
Existing methods for protecting electronic equipment from strong electromagnetic pulses, such as those generated by EMP weapons, are ineffective for objects with electric openings, like radar antennas, and struggle to prevent electromagnetic pulse interference when shields have gaps.
Innovation Solution
A method and system that generates plasma by condensing a laser beam at specific points to create an electromagnetic shield, using a threat detection system to direct the laser and generate plasma at positions between the threat and the protected object, effectively reflecting electromagnetic pulses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a shield formed of an electrically conductive body is used to protect electronic equipment from electromagnetic pulses, then protection effectiveness is improved, but the method cannot be applied to objects with electric openings such as radar antennas
Solution Approach 1:
The invention changes the state of protection from static (conductive shield) to dynamic (plasma generation). By using laser beams to generate plasma at specific positions, the protection mechanism transitions from a physical barrier to an energy-based field, allowing adaptation to objects with electric openings while maintaining electromagnetic pulse protection effectiveness.
Solution Approach 2:
The invention replaces the mechanical/conductive shield system with an optical-plasma system. Instead of using physical conductive materials to block electromagnetic pulses, the system uses laser beams (optical energy) to generate plasma, which then provides electromagnetic protection. This substitution enables protection of objects with electric openings that cannot accommodate traditional conductive shields.
2Reliability
If a shield is formed to protect against electromagnetic pulses, then protection effectiveness is improved, but it becomes difficult to prevent electromagnetic pulse influence when gaps are formed in the shield
Solution Approach 1:
The invention introduces plasma as an intermediary between the electromagnetic pulse threat and the protected object. The plasma, generated by laser condensation, acts as a dynamic barrier that fills the protective role traditionally performed by solid shields. This intermediary can form continuously in the air without requiring physical gaps to be sealed, solving the problem of shield integrity while maintaining protection effectiveness.
3Reliability
If traditional shielding methods are used, then protection is provided, but adverse influence to the electronic equipment may occur and full-body conductive shielding is required
Solution Approach 1:
The invention applies protection locally rather than requiring full-body shielding. By condensing laser beams at specific positions (light-condensed points) between the threat and the protected object, plasma is generated only where needed to block electromagnetic pulses. This localized approach provides effective protection while avoiding the adverse influences associated with comprehensive conductive shielding, and does not require covering the entire object.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for effective protection of electronic equipment with electric openings without the need for full-body conductive shielding, providing a cost-effective and reliable defense against electromagnetic pulses, even for large-scale or complex objects like radar antennas.
Implementation Method 1
generates plasma 6 in a light-condensed point 4 by condensing a laser beam 5 on the light-condensed point 4
Implementation Method 2
generates plasma 6 in a light-condensed point 4 by condensing a laser beam 5 on the light-condensed point 4
Implementation Method 3
since the plasma has the nature of reflecting electromagnetic wave having a lower frequency than a plasma frequency, the protection object 3 can be protected from the electromagnetic pulse 2a by generating the plasma 6 in an appropriate position
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
An electromagnetic pulse protection method comprising: a search step in which searches are conducted for threats 2 that generate an electromagnetic pulse 2a; and a generation step in which laser light 5 is focused on a focal point 4 and plasma 6 is generated at the focal point 4, if a threat 2 is found in the search step. As a result, a variety of objects to be protected, including objects to be protected for which electrical openings are indispensable can be protected from electromagnetic pulse attacks.