Hybrid absorbers are next-generation microwave absorbers that combine multiple absorbing materials for achieving broadband and highly efficient absorption. The following sections introduce the unique features of hybrid-type products, their primary applications, and the practical benefits they offer.
This hybrid microwave absorber combines ferrite tiles with truncated pyramidal foam sections, featuring a design optimized for EMC testing.
The practical advantages of this absorber include its ability to cover multiple frequency bands through low-reflection performance across a wide range. Additionally, its power density resistance ensures stable operation even under strong electric field conditions. The option for modular installation provides significant flexibility, making both setup and ongoing maintenance or replacement highly efficient.
Primary applications include EMC testing in anechoic chambers and shielded rooms where microwave reflection or noise elimination is required. It is suitable for both commercial and military scales, as well as cavities requiring test distances from 1 m to 10 m.
| Manufacturer Name | E&C Anechoic Chambers |
|---|---|
| Frequency range | 9 kHz to 100 GHz |
| Absorption performance | Up to approximately 30 dB |
| Size | 60 cm × 60 cm |
| Material | Ferrite tile + carbon-loaded polyurethane foam |
Reference: [PDF]E&C Anechoic Chambers Official Website（https://www.ecanechoicchambers.com/pdf/WAVASORB VHY datasheet full version_final.pdf）
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E&C Anechoic Chambers'
RF absorbers
This broadband microwave absorber for EMC testing is compatible with a frequency range from 30 MHz to 40 GHz. Delivering exceptional reflection-suppression performance and a highly reproducible measurement environment through its mat and pyramidal structures and polypropylene material with uniform carbon density.
It is primarily used in RF anechoic chambers and multi-purpose testing facilities for EMC testing, supporting a wide range of requirements from preliminary assessments to formal compliance testing. Moreover, it can withstand operating temperatures of up to 90°C, ensuring stable operation over extended periods.
One key advantage of using this material is its polypropylene substrate, which has extremely uniform carbon density, eliminating discontinuities and providing more predictable results. Furthermore, its high-performance and reliable absorption characteristics create an ideal environment for precise measurements and product evaluations.
| Manufacturer Name | Microwave Vision Group |
|---|---|
| Frequency range | 30 MHz to 40 GHz |
| Absorption performance | Up to 32dB |
| Size | Standard 60 cm × 60 cm, height 30 cm to 75 cm |
| Material | Polypropylene |
Reference: Microwave Vision Group Official Website（https://www.mvg-world.com/en/products/absorbers/specialty-absorbers/hypyr-losstmultra-hybrid-absorbers-1）
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Microwave Vision Group's
RF absorbers
This is a thin hybrid microwave absorber that integrates ferrite tiles with polystyrene foam. It enables a smooth transition from free-space impedance to lossy ferrite, providing high absorption performance of at least −15 dB in the 80–300 MHz range and at least −20 dB above 300 MHz.
It complies with MIL-STD, CISPR 25, and SpaceSaver standards, and is suitable for use in semi-anechoic chambers that conform to CISPR 16 and ANSI C63.4. By using rigid closed-cell foam as a substrate, it becomes non-hygroscopic and suitable for clean rooms (ISO 8).
With a compact design of 45.6 cm in height, its lightweight construction allows for disassembly and transport, facilitating easy installation. Furthermore, the use of environmentally friendly flame retardants ensures compliance with UL94 HBF and DIN 4102 B2, ensuring both safety and durability. It is a next-generation microwave absorber that combines high performance, space efficiency, and compatibility with clean environments.
| Manufacturer Name | ETS-Lindgren |
|---|---|
| Frequency range | 30 MHz to 40 GHz |
| Absorption performance | Up to 20 dB |
| Size | 60 cm × 60 cm, height 45.6 cm |
| Material | Polystyrene |
Reference: ETS-Lindgren Official Website（https://www.ets-lindgren.com/products/absorbers/polystyrene-hybrid-absorber/1005/100503?page=Products-Item-Page"）
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ETS-Lindgren's
RF absorbers
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.
| 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.