RF Absorbers

Short version: EMI shields and RF absorbers are not interchangeable. Shields reflect electromagnetic energy. Absorbers convert it to heat. Most designs need both, and using one without the other is the root cause of many EMI failures. This guide explains the physics of each, when to use which, and why the combination of a

Short version: High-power electronics generate both EMI and heat, and the two problems usually occupy the same physical space. Traditional approaches treat them separately: a thermal pad for heat, an absorber for EMI. The 3PB Solutions DU Series combines both functions in a single material, providing RF absorption from 2 to 18 GHz while also

Short version: The single most important factor in choosing an RF absorber is the frequency you need to absorb. Every absorber material is optimized for a specific frequency range, and using the wrong one wastes time and money. This guide provides a straightforward frequency-to-product mapping for the full 3PB Solutions line from 0.5 GHz to

Short version: Satellite communication systems operate across L-band through Ka-band and increasingly into V-band, with each frequency range requiring specific absorber materials. Whether you are building ground terminals for LEO constellations, GEO transponders, or user terminals for broadband satellite internet, RF absorbers control cavity resonance, reduce PIM, and improve antenna pattern quality. 3PB Solutions manufactures

Short version: Automotive radar sensors at 24 GHz and 77 GHz are standard equipment on most new vehicles, from adaptive cruise control to blind-spot detection to automated emergency braking. The sensor housings are small, the frequencies are high, and the absorber materials inside need to be thin and precisely tuned. 3PB Solutions manufactures elastomer sheet

Short version: 5G FR2 and Ka-band satellite systems operate at frequencies from 18 GHz to 40 GHz and above, where RF absorber material selection gets more demanding. The wavelengths are shorter, the cavity dimensions are smaller, and the absorber materials need to be thinner and precisely tuned. 3PB Solutions manufactures elastomer sheet absorbers and foam

Short version: If you're reading this because your device just failed an emissions test, you're not alone. It's one of the most common reasons engineers contact us. In most cases, a thin RF absorber material placed inside the enclosure is enough to get from fail to pass. 3PB Solutions can recommend the right material for

Short version: Passive intermodulation (PIM) at cell sites is often caused by antenna backlobes and sidelobes reflecting off nearby metal structures. RF absorber materials installed directly on the antenna suppress unwanted radiation patterns and reduce the reflections that generate PIM. 3PB Solutions manufactures weatherproof foam absorber panels and custom antenna kits for PIM mitigation at