EMI / EMC shielding solutions (Electromagnetic Interference)

Astra Shield provides cutting-edge Electromagnetic Interference (EMI) and Radio Frequency (RF) shielding systems, engineered to safeguard sensitive electronics and critical environments across commercial, defence, and research sectors. Our modular panel systems, coupled with a full suite of specialized components, ensure robust attenuation against unwanted electromagnetic radiation, meeting the most stringent industry standards.

Our Integrated Shielding Approach:

Our solutions are built upon a foundation of precision-engineered modular panels, offering flexibility and scalability for various facility sizes and performance requirements. Integrated seamlessly with these panels are a range of high-performance components, meticulously selected and tested to provide a complete shielding envelope.

Key Components & Features:

  • RF Shielding Doors:

    Designed for high-traffic environments and critical access points, our RF doors offer exceptional attenuation performance of 100dB. Available in various configurations, including swinging, sliding, and double-leaf options, they feature advanced sealing mechanisms (finger stock gaskets, pneumatic seals) to maintain shield integrity even with frequent use. Options include manually operated, Latch doors or automated systems with integrated security features

  • RF Shielding Windows

    Providing optical clarity without compromising shielding effectiveness, our RF windows utilize fine mesh screens or conductive coatings embedded within clear glass or acrylic. These solutions allow for visual monitoring while blocking electromagnetic radiation, crucial for control rooms, test facilities, and secure viewing areas.

  • RF Electrical Filters

    Essential for preventing conducted EMI/RF noise from entering or exiting a shielded enclosure via power lines. Our comprehensive range of electrical filters includes :

    Power Line Filters

    Control Line Filters

    Data Line Filters

Waveguides & Honeycomb Filters:

  • Waveguides

    Passive devices that allow the passage of specific signals (data, air, drain, firefighting FM200, fibreoptic) into or out of a shielded enclosure while maintaining RF isolation. They are designed with a specific cutoff frequency, effectively blocking unwanted RF energy.

  • Honeycomb Filters

    Specialized waveguide arrays used for ventilation and airflow while preserving shield integrity. The design of the honeycomb cells creates an RF cutoff frequency, allowing air to pass freely while attenuating RF energy. We engineer honeycomb filters with precise cell dimensions to achieve the desired cutoff frequency, ensuring optimal shielding performance for ventilation apertures.

Standards Followed:

Our EMI/RF shielding solutions are rigorously tested and certified to meet the most demanding international standards, ensuring reliable and verifiable performance:

  • IEEE-STD-299: Standard for measuring the effectiveness of electromagnetic shielding enclosures

  • MIL-STD-285: Military standard for attenuation measurements for enclosures, electromagnetic shielding, for electronic test purposes.

  • NSA 94-106: National Security Agency Specification for RFI Suppression.

  • By combining our expertise in modular design, advanced component integration, and adherence to stringent standards, we deliver unparalleled EMI/RF shielding solutions that protect your valuable assets and ensure operational integrity in increasingly complex electromagnetic environments.

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