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Polymer Film Can Limit Electromagnetic Interference

Engineers at the University of California-Riverside have developed a film incorporating a nanomaterial filler that reportedly provides an effective shield against electromagnetic interference.

According to an article posted in February to the website of Engineering and Technology (E&T), the film developed by the engineering team consists of composites synthesized with one-dimensional van der Waals materials, which “exfoliate” into needle-like structures. Testing showed that the resulting composite film provides “exceptional” shielding against electromagnetic radiation in the GHz and sub-THz frequency ranges.

Equally important, the chemical process used to produce the film can reportedly be quickly scaled for mass production of these materials.

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Near and Far Field Measurements with a Vector Network Analyzer

For optimal performance in over-the-air RF systems, antennas must meet specific requirements. Performance parameters like size, wind-loading, environmental ruggedness, transmission pattern, bandwidth, and power handling capability should be considered. Methods of measuring the transmission (or reception) pattern that determines antenna gain with a VNA will be examined in this article.

Read the E&T article discussing the promise of nanowire-filled film in reducing electromagnetic interference.

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