Radio-frequency absorber thermal insulation blanket


Technology abstract

A Portuguese technology-based company with expertise in high performance components and subsystems has developed a blanket for radio frequency absorption. Its vast expertise in lightweight materials/structures, from conception/design to manufacturing and assembly/final integration has been providing several space components. This technology is mainly used to protect equipment from undesirable thermal radiation and radio frequency interference

Technology Description

Multi-layer and radiofrequency (RF) absorber blanket has a frequency-selective structure (FSS) for blocking thermal radiation and managing electromagnetic interference (EMI), in particular for use in space (e.g. space telecommunications). This thin and lightweight blanket can be used to isolate the interior of the space asset from thermal radiation without reflecting radiofrequency waves and thus reducing its interference in antennas communication. The material, composed of metallized polymer layers, which block radiation concentrated in the infrared (IR) and visible spectral ranges and RF range, can be produced by the owner of the technology in-house since they are equipped with adequate facilities including a cleanroom ISO class 6.
This technology/product can be used in several downstream applications, where electromagnetic interference management is critical, such as small communication networks, as well as in telecommunication ground segments. Additionally, one can consider any possible application with temperature isolation issues, for security reason (both regarding temperature and radiation interference), as well as for domestic or medical devices (protection against electromagnetic radiation and heat generation concerns).

Innovations & Advantages

The main advantage is the combination of its multfunctionality, thermal isolation and RF absorption. Other advantages are: it can be applied as a patch or a large blanket, it is ligthweigth and thin when compared with other solutions. 
Low areal mass and thickness.
Maintain the thermal performance as a typical multi-layer insulation.
Use space qualified raw materials.
Allows to antenna’s new design compactness.

Further Information

Low RF-reflectivity in C, K, Ku and Ka-band (-20 dB for K/Ka-band) and, can be tailored to specific frequency and incidence angle. 
Temperature range -250 ºC to +300 ºC.

Current and Potential Domains of Application

Space communication: satellites, subsystems, payloads equipment, instruments and ground facilities
Earth communication: transponder optimization (frequency, power)
Domestic use: RF mitigation (frequency, power)
Medical devices: protection against radiation (frequency, power)
Transports use: airplanes, trains and vehicles electromagnetic and heat shielding (frequency, power)