Limits for low supply voltage operation of a 5 GHz VCO to drive a 4-path mixer
Resumen:
The design and simulation results of a cross-coupled LC VCO in 28 nm FD-SOI for the 4.8 - 5 GHz band are presented. Following a previous work, it is predicted that 0.26 V is the minimum supply voltage of this VCO. It was verified through simulations that the VCO can operate with 0.25 V supply, consuming 90 μW and has a phase noise of -90.2 dBc/Hz at 1 MHz, while complying with the requirements of the following stage. As a consequence of operating at frequencies above the transition frequency of the transistors, the predictions based on the previous study, are less accurate but still provide a good starting point for the design. Moreover, lifting the previous study hypothesis of having an oscillation frequency at least a decade below the transition frequency of the transistors has allowed to further lowering the minimum supply voltage.
| 2022 | |
| Los autores desean agradecer al proyecto STIC-AmSud O2ERF, así como a CAP y CSIC de la Universidad de la República de Uruguay. | |
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Low-Voltage Low-Power Electronics RF FD-SOI |
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| Inglés | |
| Universidad de la República | |
| COLIBRI | |
| https://hdl.handle.net/20.500.12008/54668 | |
| Acceso abierto | |
| Licencia Creative Commons Atribución - No Comercial - Sin Derivadas (CC - By-NC-ND 4.0) |
