Microwave Absorbing Elastomers
Q-Zorb™ RFSB Single Band Absorbers
Q-Zorb RFSB absorbers are resonantly tuned to discrete frequencies between 500 MHz and 100 GHz. They are designed to reduce energy reflections off a conductive ground plane by > 99% (-20 dB) at normal angles of incidence.
The materials are thin, flexible and easy to cut and install. They are elastomer-based with a variety of choices available. For example, silicone is chosen for high-temperature applications, nitrile for fuel and oil resistance and natural rubber for commercial applications.
Several magnetic fillers are available; carbonyl iron powder is standard, but other materials such as iron silicide (FeSi) are used for corrosion-resistant applications. The density of the materials is based on the volume percentage of magnetic filler.
RFSB absorbers require a conductive backing to achieve reflectivity results. For applications where a conductive backing is not available, Laird Technologies can supply a ground plane bonded to the sheet. Pressure sensitive adhesives can also be provided for ease of installation.
Applications
- Minimize antenna reflections off a structure
- Antenna pattern shaping
- Discrete frequency test chambers for devices such as transceivers, wireless devices and antenna test hoods
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