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This paper analyzes the potentials and the limitations of a novel LC-Oscillator topology featuring independent gate biasing. The topic is addressed from an experimental perspective. The novel topology has been implemented in a state-of-the-art 32 nm CMOS technology and used as a proof-of-concept. The performance of the oscillator has been evaluated in terms of power consumption and phase-noise. The...
This paper presents a new technique to improve frequency performance of CMOS ring oscillator. It is based on the adding of a CR differentiators-based MOS transistor to boost switching speed of the oscillator delay cell. The method can be used for simple and differential oscillator and offers a simple way to implement frequency tuning without introduction of any additional phase noise. Using 0.35 μm...
A gm-boosted differential Colpitts VCO is proposed, which allows lower oscillation start-up current and suppressed AM-to-FM conversion by the switching transistors. The proposed architecture allows wider range of saturation mode operation for the switching transistors which helps to suppress the AM-to-FM conversion. The proposed VCO is implemented in 0.18-mum CMOS for 1.75~1.93 GHz operation. Measurement...
A low power low voltage 90 nm CMOS mm-wave oscillator using a power matching technique is presented. The oscillator uses an inductive divider to create impedance matching for the amplifier. With this technique, the effect of the varactor loss on the phase noise is reduced and the oscillator power efficiency is increased. The proposed oscillator achieves a phase noise of -95 dBc/Hz at 1 MHz offset...
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