AP Americas' microwave absorbers offer high-performance broadband absorption, suitable for a wide range of applications such as antenna testing and RCS evaluation. The following sections introduce the applications, specifications, the company’s support services, and other information related to their microwave absorbers.
Solid-structured pyramidal microwave absorbers made of conductive carbon-loaded urethane foam, delivering high absorption performance from 100 MHz to 500 GHz. They are in compliance with fire resistance and environmental standards (REACH/RoHS), and compatible with high-power continuous waves. Ideal for applications including RF anechoic chambers, antenna testing, RCS evaluation, electronic warfare testing, OTA testing, and more.
Reference: AP Americas Official Website（https://www.apamericas.com/wp-content/uploads/2023/06/WAVASORB-VHP-JUN2023.pdf）
Walkable carbon-loaded urethane foam microwave absorbers featuring a robust 200 kg/m² load capacity and ESD-preventive coating. These absorbers maintain superior RF absorption even at incident angles up to 45°, ensuring both stability and safety for anechoic chamber floors. Ideal for antenna testing, RCS measurements, electronic warfare testing, OTA testing, and more.
Reference: AP Americas Official Website（https://www.apamericas.com/wp-content/uploads/2023/06/WAVASORB-VHP-FL-JUN2023.pdf）
Hollow pyramidal microwave absorbers for high/medium-power applications, featuring lightweight structure and excellent heat dissipation. HFX supports up to 15kW/m², HFS supports up to 3kW/m². They demonstrate high performance from 80 MHz to 40 GHz. Specifically designed for high radiation energy environments, including satellite or antenna testing, as well as near-field and compact range measurements.
This resource introduces products suitable for various applications, such as next-generation R&D, high-density packaging, stealth technology, and RCS reduction. Please use this information as a reference for selecting the microwave absorber that best suits your needs.
| Product | Frequency Bandwidth | Absorption Performance | Size | Material | Use Cases |
|---|---|---|---|---|---|
| VHP Series | 100 MHz to 500 GHz | 20~55 dB at normal incidence | Standard width 61cm × 61cm |
Carbon-loaded urethane foam |
General chamber lining and mmWave ranges |
| VHP-FL Series | 1.35 GHz to 9 GHz | 10 to 15 dB at 1~3 GHz 20 to 25 dB at 3~9 GHz |
Standard footprint: 122cm × 61cm | Low-density polyurethane foam with carbon | Walkable chamber floors |
| Type HFX/HFS | 80 MHz to 40 GHz | 15 to 25 dB around 80 MHz | Standard footprint: 61cm × 61cm | Hollow-structured carbon-loaded urethane foam | High-power near-field, satellite tests |
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.
AP Americas provides one-stop support ranging from project management to periodic verification and measurements, renovations and relocations, as well as inspection and maintenance. The company addresses future-oriented expansion measures right from the design phase. They also provide electromagnetic characteristic measurements using dedicated test equipment, relocation or enhancement of existing facilities, and maintenance contracts including those for third-party products.
| Company Name | AP Americas Inc. |
|---|---|
| Headquarters Address | 3101 Skyway Circle N., Irving, Texas 75038, USA |
| Official Website | https://www.apamericas.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.