Device for Shielding Electronic Components from High-Frequency Electromagnetic Fields

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This invention provides a special shielding device for protecting electronic components from high-frequency electromagnetic fields, such as those found in MRI (magnetic resonance imaging) and PET (positron emission tomography) hybrid scanners. The device uses at least two conductive shielding surfaces, arranged parallel with narrow slits and designed to block unwanted electromagnetic interference in the MHz range, while preventing disruptive currents (eddy currents) that can degrade imaging quality. The unique arrangement of layers and slits achieves high shielding efficiency, especially in sensitive medical imaging environments, without the drawbacks of traditional solid metal shielding.

Use CasesContent extracted from patent full text and abstract with AI.

• Shielding PET (positron emission tomography) electronics in hybrid MR-PET scanners to prevent interference from MRI systems.
• Protecting other electronic monitoring devices (e.g., vital signs monitors, pulse sensors) operated within MRI examination rooms.
• Shielding sensitive medical electronics in hospitals or research facilities from high-frequency electromagnetic noise.
• Protecting industrial measuring devices from electromagnetic interference in environments with strong RF (radio frequency) fields.
• Minimizing electromagnetic noise in scientific or technical labs with high-frequency electronic equipment.

BenefitsContent extracted from patent full text and abstract with AI.

• High shielding effectiveness against electromagnetic interference, especially in the MHz frequency range relevant to MRI imaging.
• Prevents image quality degradation and artifacts caused by eddy currents in traditional metal shields.
• Compatible with compact, small-dimensioned MR-PET scanner designs, allowing closer placement of sensitive electronics without compromising imaging quality.
• Reduces attenuation of gamma rays compared to traditional shields, benefiting PET imaging.
• Avoids the need for additional components (e.g., soldered capacitors) that could complicate production or further attenuate signals.
• Flexible design can be adapted for various geometries and materials, depending on the specific application or equipment.
• Improves overall reliability and accuracy of measurements or images from shielded devices.

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Patent Abstract

The invention relates to a device for shielding electronic components of high-frequency electromagnetic fields. According to the invention, a shielding device with shielding surfaces is made available, which includes at least two shielding surfaces (1, 1a) which are arranged parallel to one another, wherein capacitances are formed between the shielding surfaces (1, 1a) which have a high impedance in the kHz range and a low impedance in the MHz range, wherein the shielding surfaces (1, 1a) each have at least one slit (2, 2a, 3, 3a).