An all-inversion-region MOST design methodology applied to a ratioless differential LC-VCO
Resumen:
This paper presents a general optimization methodology for analog blocks in RF applications, with CMOS nanometer technologies, based on the complete exploration of all-in- version regions of MOS transistor (MOST). The fundamental tool is the systematic use of the MOST gm/ID technique and the description of the real behavior of all devices by means of semi-empirical models. To exemplify this technique, the differential ratioless cross-coupled LC-tank voltage controlled oscillator(LC-VCO) circuit is studied. The implemented design flow minimizes the LC-VCO phase noise considering the constraints of current consumption, output common-mode voltage and output amplitude. To verify the method, six LC-VCO were designed and validated by comparing them with the corresponding electrical simulations.
| 2012 | |
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Optimization Low power MOST all-inversion regions Design Methodology LC-VCOs RF Electrónica |
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| Inglés | |
| Universidad de la República | |
| COLIBRI | |
| https://hdl.handle.net/20.500.12008/41153 | |
| Acceso abierto | |
| Licencia Creative Commons Atribución - No Comercial - Sin Derivadas (CC - By-NC-ND 4.0) |
| Sumario: | This paper presents a general optimization methodology for analog blocks in RF applications, with CMOS nanometer technologies, based on the complete exploration of all-in- version regions of MOS transistor (MOST). The fundamental tool is the systematic use of the MOST gm/ID technique and the description of the real behavior of all devices by means of semi-empirical models. To exemplify this technique, the differential ratioless cross-coupled LC-tank voltage controlled oscillator(LC-VCO) circuit is studied. The implemented design flow minimizes the LC-VCO phase noise considering the constraints of current consumption, output common-mode voltage and output amplitude. To verify the method, six LC-VCO were designed and validated by comparing them with the corresponding electrical simulations. |
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