edf
Full Member level 2
Has anyone prototyped Ku Band (~17GHz) amplifiers using package HEMT FET's such as FHC40LG or NE3210S01 and actually realized the gain that the "S parameters" predicted? I've had success at 10GHz, but 2 attempts at 17GHz yielded a peak at ~14.9GHz and only 10dB for 3 stages. I used Rogers RO4003 PCB and Susumu 0.1pF caps (0402 size). I didn't observe any spurious oscillations below 20GHz.