The U1831C from Keysight is a USB-powered smart noise source designed to measure DUT noise figures up to 30 dB from 10 MHz to 26.5 GHz. The noise source has a low reflection coefficient and a nominal ENR value of 15 dB. The USB connection significantly reduces setup time and provides compatibility with noise figure analyzers and signal analyzers. It is available in a small module with 3.5 mm (male) RF connector, which provides a DC drive through USB connectivity.
