By Topic

A Mixer With Third-Order Nonlinearity Cancellation Technique for CDMA Applications

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

4 Author(s)
Woonyun Kim ; Samsung Electron., Gyeonggi-Do ; Dongjin Keum ; Sanghoon Kang ; Byeong-Ha Park

A feedforward technique to improve the third-order nonlinearity of mixers in a direct conversion transceiver is presented. The third-order intermodulation (IM3) generated by the main transconductance (Gm ) stage of mixer with inductively degenerated emitter is cancelled by that generated by the sub-Gm stage with degeneration resistor. The circuit allows the mixer to be optimized independently, and has minimal impact on noise figure (NF), gain, area, and current consumption. The proposed technique reduced IM3 by approximately 16 dB with a current increase of approximately 7%. The mixer achieved an input-referred third-order intercept point of 5 dBm, a gain of 37 dB, and an NF of 9.8 dB drawing 7.9 mA from a 2.85-V supply. The transceiver including the calibration circuitry was implemented in a SiGe bipolar transistor with fT= 35GHz for U.S. cellular code division multiple access application

Published in:

Microwave and Wireless Components Letters, IEEE  (Volume:17 ,  Issue: 1 )