ETS-Lindgren offers microwave absorbers that are suitable for a wide range of applications by employing flame-retardant, non-hygroscopic materials in various shapes and structures. The following sections introduce the key features, specifications, and suitable applications of ETS-Lindgren's product lineup, and the company’s support services.
This product achieves high reflection reduction through a unique structure in which high-quality urethane foam is impregnated with conductive carbon. Additionally, options such as fire resistance and FlexSorb™ ensure stable performance even in harsh environments. Applications include microwave anechoic chambers, EMC testing, and radio wave evaluation for unmanned aerial vehicles and drones.
Reference: ETS-Lindgren Official Website（https://www.ets-lindgren.com/datasheet/absorbers/rf-absorber/1006/100601）
Optimized for broadband reflection suppression, this curved and contoured RF absorber is specifically designed for back walls of chambers and other “hot spots” where high attenuation is required. Additionally, it is possible to enhance performance and maximize workspace efficiency in both renovations and new installations.
Reference: [PDF]testunlimited.com Official Website（https://www.testunlimited.com/pdf/ETS%20Lindgren_CRV_Datasheet.pdf）
This convex microwave absorber operates across a frequency range of 1 to 110 GHz and offers reflection reduction performance of at least 35 dB. Thanks to its smooth transition structure from free space to the substrate, it delivers stable absorption from normal incidence up to 60 degrees. CONVEX is ideal for covering antenna support structure and metal positioners, as well as for use in small millimeter-wave anechoic chambers.
Reference: ETS-Lindgren Official Website（https://www.ets-lindgren.com/datasheet/absorbers/rf-absorber/1006/100610）
This resource introduces recommended products suitable for various applications. Please use as reference for selecting a microwave absorber that meets your company's needs. Explore recommended microwave absorbers suitable for diverse applications, including next-generation R&D, high-density packaging, stealth technology, and RCS reduction.
| Product | Frequency Bandwidth | Absorption Performance | Size | Material | Use Cases |
|---|---|---|---|---|---|
| EHP | 30MHz to 100GHz | 11dB to 50dB | 60cm × 60cm, pyramid height: 6.4cm to 152.4cm | Urethane foam + conductive carbon | Chamber wall, floor, and ceiling treatment |
| CRV | 80MHz to 40GHz | Up to 55dB | Overall height 38.1cm~170.2cm base: 5.1cm~30.5cm, pyramid: 33.0cm~157.2cm |
Low-density polyurethane foam + conductive carbon | Chamber backwalls and hot spots |
| CONVEX | 1GHz to 110GHz | 25dB to 35dB | 60cm × 60cm pyramid: 5.1cm/10.2cm |
Non-hygroscopic substrate+flame-retardant treatment | Antenna supports & compact mmWave chambers |
The RF absorber market is expanding rapidly, driven by the increasing need for EMI (Electromagnetic Interference) reduction in 5G/6G, autonomous driving, and defense applications.
This site provides comparative information on products and manufacturers by application to help you identify the ideal solutions for R&D, anechoic chambers, and high-frequency testing.
A global network of over 700 experts comprehensively supports the design, evaluation, and implementation of microwave absorbers. ETS-Lindgren develops custom absorbers through advanced numerical modeling and prototype testing to support the construction of test environments that comply with the standards in various fields, such as wireless communication, EMC, acoustics, military, and medical.
| Company Name | ETS-Lindgren Inc. |
|---|---|
| Headquarters Address | 1301 Arrow Point Drive Cedar Park, Texas 78613 |
| Official Website | https://www.ets-lindgren.com/ |
| Frequency Range |
|---|
| 3GHz-320GHz |
| Material |
| Urethane Foam |
| Key Features |
| Up to 50 dB of absorption |
At just 550g per panel—approximately half the weight of competing products (*1)—this polyurethane foam absorber covers a wide frequency range from 3 to 320 GHz.
Delivers 50 dB absorption, outperforming conventional heavy ferrites.
Velcro-backed for rapid mounting, ideal for temporary setups and cost-effective maintenance.
| Frequency Range |
|---|
| 20MHz-3GHz |
| Material |
| Elastomer |
| Key Features |
| Permeability (at 1 MHz): 150 |
Heat-resistant elastomer: Designed for direct SMT processing and high-temperature durability.
Ultra-thin (from 0.1 mm) for high-density integration with robust EMI suppression.
It significantly reduces assembly workload and enables EMI countermeasures without altering the existing manufacturing process.
| Frequency Range |
|---|
| 1-35 GHz |
| Material |
| Elastomer |
| Key Features |
| Reflection Performance: –20 dB |
Frequency-tuned for specific radar absorption, offering superior stealth performance over standard RF sheets (*2).
Millimeter-thin design delivers –20 dB reflection, ensuring high absorption while preserving aerodynamic integrity.
Excellent conformance to complex geometries with thermal stability from –60°C to 150°C—ideal for aerospace platforms.