Listening to police and fire calls used to be a pretty simple proposition: buy a scanner, punch in some frequencies — or if you’re old enough, buy the right crystals — and you’re off to the races. It ...

Signal modulation is one of the most basic and important concepts in the RF industry. It consists of using the variation of one or more parameters of a carrier signal to transmit information, ...

Where digital and analog designs are overlapping, and why it’s becoming more difficult to ensure they work as expected over their lifetimes. Pujol: We need some abstraction because we cannot ...