FILTER ASSEMBLY AND METHOD OF FILTERING ELECTROMAGNETIC RADIATION

摘要

A filter assembly and a method for filtering electromagnetic radiation are provided. The filter assembly includes a dielectric layer having a first side and a second side. The filter assembly further includes a first conductive layer disposed on the first side of the dielectric layer. The filter assembly further includes a second conductive layer disposed on the second side of the dielectric layer. The filter assembly further includes a voltage source electrically coupled to the first and second conductive layers. The voltage source is configured to generate a first voltage signal that adjusts a dielectric constant value of the dielectric layer to a first desired dielectric constant value to filter electromagnetic radiation impinging on the first conductive layer. The voltage source is further configured to generate a second voltage signal that adjusts the dielectric constant value of the dielectric layer to a second desired dielectric constant value to filter electromagnetic radiation impinging on the first conductive layer.