Radio wave absorption sheet, electromagnetic wave absorption sheet, high-frequency countermeasure sheet, noise suppression.
The thin sheet that absorbs high-frequency electromagnetic waves excels in radio wave absorption performance at oblique angles, is easy to process and install due to its thin sheet form, and has excellent durability.
In recent years, there has been an increase in electronic devices and radar emitters that emit high-frequency waves, and correspondingly, EMC and EMS measures have become essential. The "high-frequency electromagnetic wave absorption sheet" absorbs electromagnetic waves in the gigahertz range of 5 to 110 GHz. It can be customized in terms of materials, mixing ratios, and film thickness for the electromagnetic wave absorption layer and metal reflection layer to match the frequencies emitted by electronic devices. As the speed of CPUs and other components increases, the noise frequency range is shifting to high frequencies, making it difficult for conventional ferrites and filters to prevent interference with signal waveforms, complicating noise countermeasures. This product excels in radio wave absorption performance at oblique angles, is easy to process and install due to its thin sheet form, and is highly durable. It is suitable for countermeasures against module TX-RX crosstalk (ETC at 5.8 GHz, X band at 8-12 GHz, ship radar at 3 GHz and 9 GHz, proximity radar at 24 GHz, local 5G at 28 GHz, high-speed wireless LAN at 60 GHz, vehicle-to-vehicle radar at 76.5 GHz, and millimeter-wave noise countermeasures from 50 GHz to 110 GHz), ground plate crosstalk measures, unwanted radiation noise absorption, communication facility sites, countermeasures against ETC misoperation due to diffuse reflection, and ghosting caused by nearby metallic structures in radar applications.
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basic information
The high-frequency electromagnetic wave absorbing sheet absorbs gigahertz electromagnetic waves from 5GHz to 110GHz. The wave absorbing sheet is designed to significantly increase electromagnetic loss by appropriately combining magnetic and dielectric materials according to frequency and absorption performance. 【Features】 ○ It has a wide absorption bandwidth and high absorption performance. ○ The absorption characteristics for oblique incident waves are particularly excellent. ○ It is thin, lightweight, and flexible, with excellent processability, and can accommodate molded products. ○ Design is possible according to the desired frequency band.
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Applications/Examples of results
Applications of Noise Absorption Sheets - Measures against radiated noise within products (flexible substrates, high-speed ICs, etc.) - Reduction of crosstalk during high-density mounting - Static electricity countermeasures - Reduction of resonance and internal reflections within enclosures - Improvement of RFID antenna sensitivity (Attaching noise absorption sheets between loop antennas of electromagnetic induction-type reader/writers and metal enclosures to counteract eddy current losses from metal plates and improve antenna efficiency) - Reduction of magnetic field energy generated from power supply systems
Detailed information
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Electromagnetic Wave Noise Suppression Sheet: In small electronic devices such as mobile phones, laptops, and digital cameras, issues arise due to the high-density mounting of electronic components, the acceleration of clock speeds, and the use of low-voltage ICs for power-saving purposes, which lead to unwanted radiation in the high-frequency range and complex electromagnetic interference between components and circuits. The noise suppression sheet addresses these issues by uniformly orienting flat powder made of soft magnetic material with high permeability within a resin material, while electrically isolating the powder particles from each other. By placing this sheet in areas where electromagnetic interference occurs, inductive coupling is suppressed, high-frequency noise is attenuated, and unwanted radiation can be effectively suppressed without secondary effects such as secondary radiation or signal degradation.
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Electromagnetic Wave Absorption Sheet: It excels in electromagnetic wave absorption performance at oblique angles of incidence. It is a thin sheet that is easy to process and install, and it has excellent durability. It is ideal for countermeasures against module TX-RX coupling, ground plate coupling, unwanted radiation noise absorption, communication facility sites, countermeasures against erroneous operation due to ETC multipath reflection, and ghosting caused by nearby metal structures in radar applications, including ETC (5.8GHz), X-band (8-12GHz), ship radar (3GHz, 9GHz), proximity radar (24GHz), high-speed wireless transmission (38GHz), high-speed wireless LAN (60GHz), and vehicle-to-vehicle radar (76GHz).
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High-frequency electromagnetic wave absorption sheet:
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Company information
Our mission is to add our unique ideas and know-how to the new materials that are continuously emerging, in order to meet the needs of various industries, and to propose them as new products with added functionalities. Our functional composite materials exhibit excellent and original features across various fields, including home appliances, precision equipment, medical devices, construction, and transportation, as well as in areas such as equipment parts, special rooms, and architectural panels, thereby serving everyone effectively. "Reflecting the times and exploring the next generation" is our pride in our continuous development capabilities that lead the industry. We offer a variety of electromagnetic wave countermeasure products. Furthermore, to carry out these measures effectively and efficiently, we have established a system that allows us to conduct electromagnetic wave environment measurements, field surveys, construction advice, and shielding work consistently. Technology is not born overnight. Our employees cherish a proactive attitude towards "technologies that no one is doing," "technologies that are deemed impossible," and "unique technologies." In development, not everything is successful; in fact, failures are more common. However, it is also true that the byproduct technologies born from challenges support our company today.