Specifying General Purpose Amplifiers in High Frequency Applications

Download Whitepaper
  • Author: Gene Heimbecher and Scott Craft
Wideband general purpose ampli-fiers (GPAs), also known as “gain blocks,” are invaluable components for control-ling signal levels in RF and microwave circuits and systems, such as receivers and transmitters. In receivers, a GPA can boost received signals prior to reach-ing the demodulator. In transmitters, a GPA can provide the necessary gain to boost the signal to the correct level at the inputs of a power amplifier. GPAs are also useful as buffers to provide a known impedance or iso-lation between two components, such as a local oscillator (LO) and a mixer.