High-speed and precise monolithic multiplier with radiation hardness using silicon bipolar SST

A high-speed and precise monolithic analogue multiplier with radiation hardness for high-speed onboard modems has been developed using Si-bipolar SST (super self-aligned process technology). The developed multiplier achieves an amplitude error of less than 0.2 dB p-p and a phase error of less than 2 degrees p-p up to 1 GHz. Moreover, radiatio hardness tests have proved the multiplier has a total dose. immunity up to 106rad (Si).