614 / 2019-03-15 22:41:49

A 0.75GHz-1.75GHz SiGe LNA for Cryogenic Application

SiGe HBT, cryogenic environment, low noise amplifier, impendence matching, noise figure

全体主题 > RF & Microwave

A 0.75GHz-1.75GHz SiGe LNA for cryogenic application is presented. At room temperature(300K), the LNA achieves 1GHz bandwidth, 17dB gain and 1.75dB noise figure, while consuming 1.8mA from a 2.8V power supply. At cryogenic temperature(77K), the LNA achieves 16dB gain and 1.5dB noise figure from 0.75GHz to 1.75GHz with good impendence matching. The stability of the relevant passive devices and FR4 PCB material is verified to pave road for cryogenic circuit design.