Microwave Energy Detector with Faraday Shielding
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Solution Overview
Problem
Current technologies lack effective methods to detect and measure exposure to high-intensity electromagnetic fields from directed energy weapons (DEWs), which pose health risks to personnel due to their cumulative and indistinguishable effects on human tissue and electronic equipment.
Innovation Solution
A microwave energy detector with a Faraday enclosure and a gas bulb sensor that responds to microwave-frequency fields above a threshold, using a photovoltaic transistor and microprocessor for logging and alerting, while maintaining electrical and physical isolation from the sensor to protect internal electronics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sensor is positioned outside the Faraday enclosure to detect microwave fields, then the detector can sense microwave-frequency fields without direct exposure to high-intensity electromagnetic fields, but the sensor must be isolated from the internal electronics while still allowing information transfer
Solution Approach 1:
The patent uses an intermediary coupling mechanism (such as a waveguide or resonant structure) that allows electromagnetic energy to be transferred from the sensor outside the Faraday enclosure to the receiver inside the enclosure without direct electrical connection. This intermediary structure enables information transfer while maintaining the protective isolation barrier.
Solution Approach 2:
The detector is segmented into distinct functional zones: the sensor element positioned outside the Faraday enclosure for field detection, the Faraday enclosure itself as a protective barrier, and the receiver circuitry inside the enclosure for signal processing. This segmentation allows each component to operate in its optimal environment while maintaining overall system functionality.
2Object-affected harmful factors
If the Faraday enclosure is made more effective in attenuating microwave fields, then internal electronics are better protected from high-intensity electromagnetic fields, but the enclosure becomes more complex and larger
Solution Approach 1:
Rather than requiring the entire Faraday enclosure to provide maximum attenuation, the patent applies electromagnetic shielding selectively at critical locations where microwave fields are most likely to penetrate or where internal electronics are most vulnerable. This localized approach maintains effective protection while reducing overall enclosure complexity.
3Measurement precision
If the sensor is designed to respond to microwave fields above a threshold level, then the detector can identify significant DEW exposure events, but the sensor may be damaged by high-intensity electromagnetic fields
Solution Approach 1:
The Faraday enclosure acts as an intermediary protective barrier that allows the sensor to detect microwave fields above threshold levels while protecting the sensor from direct exposure to damaging high-intensity electromagnetic fields. The enclosure mediates between the need for sensitive detection and the need for sensor protection.
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
The detector effectively measures and logs electromagnetic exposure, providing timely alerts to personnel exposed to DEWs, thereby aiding in health protection and source identification, while withstanding high-intensity electromagnetic fields without damaging internal circuitry.
Implementation Method 1
A Faraday enclosure for substantially attenuating microwave-frequency fields outside the Faraday enclosure
Implementation Method 2
The sensor is a gas bulb responsive to microwave-frequency fields above a threshold
Implementation Method 3
The receiver can be implemented as a photovoltaic transistor
Data Source
AI summary
A Faraday enclosure for substantially attenuating microwave-frequency fields outside the Faraday enclosure. Information to and from the circuitry inside the Faraday enclosure is accessible by input pinholes and output pinholes, respectively. A sensor positioned outside of the Faraday enclosure and aligned with the first input pinhole senses microwave-frequency fields. A receiver inside the Faraday enclosure aligned with the input pinhole and the sensor responds to the sensor.