Mass-producible carbon nanotube field effect transistors (CNTFETs) have been used for the first time to build a GHz amplifier. US-based collaborating companies RF Nano Corp. and MITEQ Ltd. developed a CNTFET-based single-stage L-band RF amplifier which demonstrates the highest performance circuit published so far for this technology. “RF Nano is the first and only company able to mass produce CNTFETs useful for amplifiers that operate in the GHz range,” said Dr Michael Schroter, Vice President RF Engineering at RF Nano. “In addition, RF Nano has a working compact transistor model with a suite of passives in development for a full CNTFET MMIC platform.”