Comparison of cryogenic W band low noise amplifier based on different III-V HEMT foundry process and technologies

Abstract

We present the results of a development activity for cryogenic Low Noise Amplifiers based on HEMT technology for\ud ground based and space-borne application. We have developed and realized two LNA design in W band, based on\ud m-HEMT technology. MMIC chips have been manufactured by European laboratories and companies and assembled in\ud test modules by our team. We compare performances with other technologies and manufacturers.\ud LNA RF properties (noise figures, S-parameters) have been measured at room and cryogenic temperature and test results\ud are reported in this paper. Performance are compared with those of state-of-the-art devices, as available in the literature.\ud Strengths and improvements of this project are also discussed.\ud Keywords: Cryogenic Low Noise amplifiers, HEMT technologies, millimetric wavelength