Winchester Interconnect PolyIron™ Microwave Absorbers
Winchester Interconnect PolyIron™ Microwave Absorbers are proprietary and highly effective magnetically loaded microwave absorbers. PolyIron™ utilizes a unique blend of highly-permeable magnetic particles embedded in a flexible polymer-matrix, enabling effective absorption across a broad frequency range from 0.5GHz to 40GHz. In sheet form, the PolyIron allows easy cutting, bending, and conforming to small or irregular enclosures, making them ideal for compact RF and microwave systems. PolyIron™ microwave absorbers are commonly used to suppress cavity resonances, reduce surface currents, and minimize unwanted reflections within electronic assemblies. Typical applications include waveguide loads, antenna side-lobe attenuation, stealth and radar absorption, RFID interference elimination, and handset RF EMI suppression.
Features
- Absorbs electromagnetic energy via magnetic interaction
- Effective across a wide frequency ranging from 0.5GHz to 40GHz
- Elastomer sheet is flexible and can be cut, bent, and conformed
- High magnetic permeability allows for thin and space-saving absorption
- Absorbing cavity resonance
- -15dB to -20dB or better reflectivity (return loss)
- Good impedance matching to air
- 0.25mm to 3.18mm thickness
- Relatively high density
- Electrically insulative
- -55°C to 125°C or higher temperature range
- Reduces unwanted surface currents and improves isolation
- Prevents reflections and crosstalk, enhancing electromagnetic compatibility
- Polymer matrix provides durability and resistance
- Often available with a Pressure-Sensitive Adhesive (PSA) backing for quick and easy application
Applications
- Waveguide loads
- Antenna side-lobe attenuation
- Stealth radar absorber and electronic silencing
- RFID interference elimination
- Cellphone and handset RF EMI suppression
