By Topic

Implementation of an improved active CMOS mixer with high linearity for wideband wireless systems

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

4 Author(s)
Fan Xiangning ; Inst. of RF- & OE-ICs, Southeast Univ., Nanjing, China ; Zhang Lei ; Zhu Chisheng ; Wu Rui

This paper designs and implements an direct up-conversion mixer based on RF CMOS process, which can be used in the up-link radio frequency (RF) front-end of a 2.4 GHz wideband wireless system such as multimedia wireless sensor network (WSN). Firstly, Gilbert cell-based double-balanced structure is adopted in this design, which can effectively suppress the feed-through of the local oscillator (LO) signal to the RF port, and as well as that of the intermediate frequency (IF) signal to the RF port. Then, an improved Gilbert cell structure-based circuit is proposed by introducing source degeneration technique to improve the linearity of the up-mixer. LC resonant network is used as load of the mixer to select the first-order mixing items. Finally, the mixer is fabricated in TSMC 0.18μm 1P6M RF CMOS process. Measured results show that the mixer performs well and has better linearity, the input 1dB compression point is -1dBm, and the conversion gain is -0.5 dB with the total current (including the mixer core and the buffer) of 16 mA. The entire chip area (including the pads) is 780μm × 560μm.

Published in:

Signals Systems and Electronics (ISSSE), 2010 International Symposium on  (Volume:2 )

Date of Conference:

17-20 Sept. 2010