How to use negative feedback to regulate output power from a laser diode using a simple, single op-amp based circuit ...

1 The square-wave LO input results in ... Third, the op-amp mixer doesn't have the 6-dB loss found in a diode bridge mixer. Fourth, the op-amp mixer doesn't use transformers, so it may be suitable ...

Superconductivity is an advantageous property observed in some materials, which entails an electrical resistance of zero at ...