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A multistandard CMOS mixer using switched inductor  

Yoo, Sang-Sun (Information and Communication University)
Yoo, Hyung-Joun (Information and Communication University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.44, no.3, 2007 , pp. 78-84 More about this Journal
Abstract
A multistandard direct-conversion mixer for WCDMA, Wibro, and 802.11a/b/g is designed in 0.18 um CMOS technology To support multistandard and to reduce the chip area the switched inductor is used as the matching method. This switched inductor matching network selects the mixer's operation frequency band by turning on or off the switch transistor. Since the performances of mixer and operation frequency can be affected by the parasitic of switch transistor the mixer should be designed with the optimized size of switch to minimize parasitic effects. Proposed mixer is able to achieve return loss less than -13 dB in $2.1\sim2.5GHz$ and $5.1\sim5.9GHz$ bands with the suitable performance to meet requirements of WCDMA, WiBro, and 802.11a/b/g.
Keywords
Multistandard; multiband; dualband; reconfigurable; switched inductor;
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