Almost every engineer has had the opportunity to top off his or her vehicle’s air conditioner with a can or two of R131A refrigerant. But don’t throw the empty can away — with a little work, you can ...

In the November 2012 issue I wrote about combining FM antennas by way of filters. I received a question from a reader (Danny Wilson) about how to accomplish the same thing using transmission line ...

A technical paper titled “Integrated microwave photonic notch filter using a heterogeneously integrated Brillouin and active-silicon photonic circuit” was published by researchers at University of ...