C&T RF Antennas Inc. manufactures a series of high-performance RF absorber sheet materials. Please scroll to the bottom of this page for more product-style information.
Contact us for more details on our high-performance RF absorber sheets, including RF absorber foam material datasheets, pricing, and inventory.
Or other RF product styles.
Please send us the item SKU# and the page link you are interested in to info@ctrfantennasinc.com.
We will reply to you as soon as possible.
The high-performance RF absorber foams are radar-absorbent materials supplied by C&T RF Antennas Inc., used for microwave absorber anechoic chambers, etc.
RF Absorber Foam materials play a crucial role by minimizing radar wave reflection, thus reducing object radar signatures. RF Absorbers work by allowing the wave to penetrate a region where the electric and/or magnetic fields experience loss.
Besides the High-Performance RF Absorber Foams, Pyramidal Radiation-absorbent Materials are also available at C&T RF Antennas Inc.
Main components of RF absorber foam materials: foam (polyurethane), carbon black powder, graphite powder, etc.
Applications: shielding enclosures, anechoic chambers, and EMC shielded rooms.
Function: Absorbs and shields electromagnetic waves, electronic communications, and various types of noise.
Product features: Excellent shielding performance, heat resistance, high flame retardancy, and easy installation.
Regular sizes available.
500*500*3mm
500*500*5mm
500*500*10mm
500*500*20mm
500*500*30mm
500*500*40mm
500*500*50mm
500*500*60mm
500*500*1000mm
Customized Sizes and More…
C&T RF Antennas Inc. offers a wide range of RF antennas, adapters, amplifiers, and cable assemblies. The internal & external antennas with Omni and directional antennas single-band/dual-band/multi-band/extra wideband radio frequencies such as 13.56 MHz, 169 MHz, 230 MHz, 315 MHz, 433 MHz, 868 MHz, 915 MHz, VHF&UHF, ADS-B, 2.4 GHz, 5 GHz, 1.2 GHz, 1.4 GHz, 1.8 GHz, 2G 3G 4G, 5G NR, etc.
The RF products supplied by C&T RF Antennas Inc. are used in various applications, including cellular, LTE, CBRS, GSM, LTE-M, UMTS, GPRS, DAS, LPWA, NB-IoT, Sigfox, LoRa, wireless, Wi-Fi, Bluetooth, ISM, RFID, NFC, and GNSS/GPS/UWB. Contact us for any additional specifications you need.
| Material Properties Reference | Reflective loss (-dB) | ||||||||
| SKU | 1GHz | 2GHz | 3GHz | 6GHz | 10GHz | 18GHz | 25GHz | 35GHz | 50GHz |
| CTRF-ANTENNA-RAF-500X500X5 | 8 | 15 | 15 | 17 | 19 | ||||
| CTRF-ANTENNA-RAF-500X500X10 | 15 | 15 | 17 | 19 | 22 | ||||
| CTRF-ANTENNA-RAF-500X500X20 | 10 | 15 | 17 | 17 | 20 | 23 | 25 | ||
| CTRF-ANTENNA-RAF-500X500X50 | 15 | 17 | 17 | 17 | 17 | 20 | 24 | 26 | |
| CTRF-ANTENNA-RAF-500X500X100 | 15 | 17 | 17 | 17 | 17 | 17 | 22 | 25 | 28 |
Introduction to Flat RF Absorber Sheet Materials
RF absorber foam materials are solid foam absorbers that exhibit excellent broadband absorption performance under both perpendicular and oblique electromagnetic wave incidence. They are widely used in various applications, including microwave anechoic chambers, radar compartments, the interiors of antenna systems, turntables, and test stands, to shield the inner walls of test chambers, improve antenna performance, and eliminate unnecessary reflective interference.
RF absorber foam materials are cut from polyurethane foam using computer-controlled contour cutting machines, resulting in an aesthetically pleasing structure, precise dimensions, and no dust shedding or moisture-induced discoloration.
RF absorber foam materials are available in a complete range of specifications to meet the requirements of different types of anechoic chambers and test chambers. Special materials are also available for specific areas such as corners, ventilation openings, and lighting fixtures to address unique application needs.
The flame-retardant performance of flat-panel absorbers meets the national Class B2 material standard, with an oxygen index of ≥28%, satisfying the requirements of the NRL8093 test standard.
RF absorber foams are manufactured using specially designed production equipment and strict process controls to ensure product consistency, stability, and reliability, thereby guaranteeing the performance requirements of the entire anechoic chamber.
| SKU | Base Size | Size | KG/M² |
| CTRF-ANTENNA-RAF-500X500X5 | 500*500 | 500*500*5 | 0.45 |
| CTRF-ANTENNA-RAF-500X500X10 | 500*500*10 | 0.65 | |
| CTRF-ANTENNA-RAF-500X500X20 | 500*500*20 | 1.3 | |
| CTRF-ANTENNA-RAF-500X500X50 | 500*500*50 | 3.2 | |
| CTRF-ANTENNA-RAF-500X500X100 | 500*500*100 | 6.2 |
※ Appearance
Flat-panel shape, typically light blue, but other colors are available upon request. Neat, aesthetically pleasing, and clean in appearance; flexible and bendable. Operating temperature range: -50°C to 90°C; short-term temperature range: -100°C to 120°C. All raw materials comply with environmental protection requirements. The primary chemical components are non-toxic. The product utilizes an advanced formulation of inorganic flame retardants that are non-volatile, odorless, and non-toxic, with stable flame-retardant performance that does not degrade over long-term use.
※ Safety
Oxygen index: 36.6%, GB/T 2406-93 (Test reports from the National Quality Supervision and Inspection Center for Fire-Resistant Building Materials are available)
Flame-retardant rating: Class B2, GB 8624-1997 (compliant with U.S. Navy NRL 8093 test standards) meets the requirements of U.S. Navy Laboratory Report NRL 8093 (1977) for voltage resistance, Test II (flame ignition and spread), and Test III (self-ignition).
It features a high oxygen index, has passed fire simulation tests, and provides long-lasting flame-retardant performance. Power density: 0.8 kW/m², 1.0 kW/m² for short durations.
※ Environmental friendliness
Flat-sheet absorptive foam exhibits excellent environmental performance. All raw materials comply with environmental requirements, and the primary chemical components are non-toxic. Additionally, it utilizes inorganic flame retardants formulated with advanced technology, which are non-volatile, odorless, and non-toxic. The flame-retardant performance remains stable and does not degrade over long-term use.
High-performance RF absorber foams are for indoor use only; not suitable for outdoor use.
RF absorber sheets are solid foam absorbers that offer excellent broadband absorption performance under both perpendicular and oblique electromagnetic wave incidence, and are widely used in various microwave anechoic chambers.
RF absorbers are manufactured using computer-controlled contour cutting machines to cut polyurethane foam into angular cones, resulting in an aesthetically pleasing structure, precise dimensions, and no dust shedding or discoloration due to moisture absorption.
A comprehensive range of product specifications is available to meet the requirements of different types of anechoic chambers and shielded enclosures. Specialized RF absorber foam materials are also available for specific areas such as corners, ventilation openings, and lighting fixtures to address unique application needs.
The flame-retardant performance of RF absorber foams meets the national Class B2 material standard, with an oxygen index of ≥28%, satisfying the requirements of the NRL8093 test standard.
RF absorber foams utilize specially designed and manufactured production equipment, and strict process controls ensure consistent, stable, and reliable product performance, thereby guaranteeing the performance requirements of the entire anechoic chamber.
Installation Instructions for RF Absorber Foams
RF absorber foams are very flexible and easy to cut, making them extremely convenient to install; Simply attach them using all-purpose adhesive. The installation process produces no toxic or harmful gases or dust, effectively ensuring a safe working environment in the anechoic chamber. The panels are ready for use shortly after installation is complete.
