The subject, though, was 100 GHz rectification and power supply size. My
point was that FETs overcame the drop in efficiency of diodes at high
frequencies, but FETs too have their limitations and drop off in efficiency
with frequency. High power switching at 100 GHz to achieve any kind of
practical current rectification is a problem for a tiny power supply.
Remember the power transformer that used to be in old radios and television sets. You will not find one now. Where did it go? These devices still require a multitude of voltages. In televisions the power line frequency is unshifted and then ran through a light small light weight transformer. It looks more like a tuning coil than a transformer. The is done because the inversion electronics are cheeper than transformer iron. Much smaller filter capacitors are required at high frequency.
Frank Znidarsic
