RF mixers: how a receiver moves a signal to another frequency
A radio mixer is not an audio mixing desk. It is a frequency-conversion circuit. By combining an incoming signal with...
RF amplifiers: why an LNA and a PA solve different problems
“Add an amplifier” sounds like a simple way to improve a radio link. In practice, you must first identify which...
Can transmitting without an antenna damage your radio?
Yes, it can, but “powered on” and “transmitting” are different states. The main concern is a transmitter delivering RF power...
