By Topic

A fully integrated differential double frequency wide tuning range CMOS LC VCO for 2.4GHz IEEE802.15.4/ZigBee

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
$31 $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)
Fan Xiangning ; Inst. of RF- & OE-ICs, Southeast Univ., Nanjing, China ; Zeng Jun ; Li Bin ; Zhu Weiwei
more authors

A fully integrated double frequency differential LC voltage controlled oscillator (VCO), used in the frequency synthesizer of 2.4GHz IEEE802.15.4/ZigBee Wireless Sensor Network (WSN), is designed and implemented based on TSMC 0.18μm RF CMOS process with low power dissipation and wide tuning range. The core circuit adopts complementary differential negative resistance LC oscillator structure and is biased by current source. A 3 bits switch capacitor array is used to provide extra tuning range. The output buffer of common source structure is of decent reverse isolation. The layout area is 700μm×900μm. With a 1.8 V supply voltage, post-simulation shows that the achieved tuning range, along with the phase noise performance, can perfectly compensate the deviation due to process corners. Measurement results of the chip indicate that tuning range is 24% and phase noise of -121.12dBc/Hz is obtained at 3 MHz offset with the carrier of 4.8 GHz. And the operating current of core circuit is only 2mA.

Published in:

Signals Systems and Electronics (ISSSE), 2010 International Symposium on  (Volume:1 )

Date of Conference:

17-20 Sept. 2010