Abstract: An envelope tracking supply converter was presented for the RF power amplifiers of sub-6 GHz 5G NR mobile devices. The hybrid supply converter consisted of a linear, fast switching, and slow ...

Abstract: In this letter, we conduct analysis on the optimum design for RF-to-optical up-converter in coherent optical OFDM systems using an optical I/Q modulator. We first derive closed-form ...

The ZX Spectrum in its original form produces a radio frequency signal that can be fed into an analog TV. The quality of this signal is very poor, but this can be improved by a simple modification ...