By Topic

A Low Power, Startup Ensured and Constant Amplitude Class-C VCO in 0.18 \mu {\rm m} CMOS

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
Jian Chen ; iPack Vinn Excellence Center, ICT, KTH (Royal Institute of Technology), Stockholm-Kista, Sweden ; Fredrik Jonsson ; Mats Carlsson ; Charlotta Hedenas
more authors

A low power and robust class-C voltage-controlled oscillator (VCO) is presented in this letter. It features 1) an automatic startup loop to achieve the optimal point and address the inherent risk of startup failure and 2) a digital amplitude control loop to stabilize amplitude and enhance the PVT (process, voltage and temperature) tolerance. The design is implemented in a 0.18 μm CMOS process. Measurement demonstrates the VCO has a 20% tuning range and phase noise of -123.0 dBc/Hz at 1 MHz offset from a 3.1 GHz carrier while consuming 1.57-mW power from a 1 V supply, yielding a Figure-of-Merit (FoM) of 191.1. While operating under the minimum power of 560 μW, it produces -111.3 dBc/Hz phase noise at 1 MHz offset from a 3.1 GHz carrier showing a 183.8 FoM.

Published in:

IEEE Microwave and Wireless Components Letters  (Volume:21 ,  Issue: 8 )
IEEE RFIC Virtual Journal
IEEE RFID Virtual Journal