Brick wall filters are desirable in a number of audio, instrumentation and data acquisition applications. Creating these filters in the analog domain presents many cost and implementation challenges, ...

(Surface Acoustic Wave filter) A semiconductor device that is used to filter out desired frequencies. Widely used in mobile phones to filter both RF and IF frequencies, a SAW filter uses the ...

A University of Michigan professor has developed a new type of colour filter made of nano-thin sheets of metal with precisely spaced gratings. The filter might eventually enable higher-definition ...