CMOS-Based Ring Oscillator Architecture for 5G Mobile Communication

Abstract

This project presents the development of a CMOS 
ring oscillator architecture specifically optimized for 
the stringent power efficiency and high-frequency 
performance required in fifth-generation (5G) 
mobile communication systems. With the rapid 
evolution of wireless technologies, 5G networks 
demand clock generation circuits that not only 
deliver ultra-fast signal processing but also maintain 
low power consumption to enhance device battery 
life and support dense integration in modern SoCs 
(System-on-Chips). 
To address these dual requirements, the proposed 
ring oscillator integrates a hybrid design approach, 
combining current-starved inverter stages with 
negative-skewed delay elements. The current
starved technique helps limit the drive current, 
effectively reducing power consumption without 
compromising 
the 
operational 
frequency. 
Meanwhile, the negative-skewed delay strategy 
compensates for inherent timing delays and improves 
signal transition sharpness, thereby enabling faster 
oscillation and reduced jitter. 
The oscillator is implemented using a 45nm CMOS 
process, a technology node that balances 
performance and power efficiency for high-speed 
digital and RF applications. Operating at a supply 
voltage of 2V, the design achieves high-frequency 
oscillations that meet or exceed the clocking demands of 5G transceivers, baseband processors, 
and other high-speed circuitry. 
Through simulation and preliminary silicon 
validation, the proposed architecture demonstrates 
strong potential as a robust and scalable clock 
generation solution for next-generation wireless 
systems. The combination of innovative delay 
techniques and advanced process technology 
positions this design as a competitive candidate for 
integration in 5G mobile devices, where reduced 
power dissipation and high-speed performance are 
critical.