A new thin microwave absorption film capable of suppressing noise from high frequency electronic devices has been released by Nikkan Industries Co., Ltd, a manufacturer of flexible laminates for flexible electronics.
Featuring suppression rates of 20 dB at 2 GHz, 30 dB at 4 GHz and stable for frequencies greater than 4 GHz, the 42.5 microns thick Nikram film reduces both incoming and outgoing noise from high-frequency devices simply by being mounted on the surface of any housing. No grounding is required, says the company, which will help to reduce the weight and footprint of the device.
In addition, the film can render devices with metallic housings invisible to radar searches because microwaves are absorbed instead of reflected. The absorbed microwaves are converted to heat within the film; however, the amount of heat will not drastically increase the temperature of the film, and the film itself is flame retardant with a grade of UL VTM-0 and heat resistance for SMT soldering.
