A 48-to-82.5GHz frequency doubler in 28nm FDSOI CMOS using a modified Gilbert cell is presented. The tail transconductors are split and the switching-quad transistors AC-shorted by capacitors. DC offset builds up across the capacitors, reducing the switching-quad duty cycle in steady state. This mechanism enhances power-conversion gain and efficiency. Measurements show 8.5dBm output power at 11% PAE.
A 48-to-82.5GHz CMOS Split-Tail Gilbert-Cell Frequency Doubler Achieving 11% PAE at 8.5dBm Output Power
Jamal, Jismal;Piotto, Lorenzo;Vecchi, Federico;Mazzanti, Andrea
2026-01-01
Abstract
A 48-to-82.5GHz frequency doubler in 28nm FDSOI CMOS using a modified Gilbert cell is presented. The tail transconductors are split and the switching-quad transistors AC-shorted by capacitors. DC offset builds up across the capacitors, reducing the switching-quad duty cycle in steady state. This mechanism enhances power-conversion gain and efficiency. Measurements show 8.5dBm output power at 11% PAE.File in questo prodotto:
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