A couple of years ago one of the Hackaday Prize finalists was a project to take highschoolers through building a direct conversion radio receiver for the 40 metre amateur band. It was originated by ...

The design of UHF radio receivers has received great attention over the past few years, fueled by consumers' demand for smaller, cheaper and lower-power cellular handsets. As a result, designers have ...

Modern radio receivers have a distinct advantage over the common early designs which I covered in my previous article. Most of the receivers you will have worked with over the past couple decades are ...

But the direct-conversion receiver's biggest problem relates to isolation. Any leakage in the local oscillator frequency that couples into the mixer is at the same frequency as the wanted signal, so ...