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A CNT based VCO with extremely low phase noise and wide frequency range for PLL application
Author(s) -
Sarbazi Hamed,
SabbaghiNadooshan Reza,
Hassanzadeh Alireza
Publication year - 2021
Publication title -
international journal of numerical modelling: electronic networks, devices and fields
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.249
H-Index - 30
eISSN - 1099-1204
pISSN - 0894-3370
DOI - 10.1002/jnm.2891
Subject(s) - voltage controlled oscillator , phase noise , phase locked loop , dbc , carbon nanotube , electronic engineering , inductor , voltage , varicap , electrical engineering , materials science , computer science , optoelectronics , engineering , physics , nanotechnology , capacitance , electrode , quantum mechanics
Voltage controlled oscillators (VCOs) are used as key components in phase‐locked loop systems for generating stable oscillation signals. Since the digital electronics industry increasingly needs a faster operation, VCOs need to generate signals at higher frequencies. This paper presents a voltage controlled oscillator with a wide frequency range and very low phase noise by using carbon nanotube technology. The Stanford CNTFET model is implemented in Verilog‐A, and the proposed CNTFET VCO is simulated using ADS software. Simultaneous use of forward bulk biasing and an inductor yields a carbon nanotube oscillator with a frequency range of 6‐20 GHz and a phase noise of −123 dBc/Hz.