Class AB low voltage high linearity mixer design

Traditional Gilbert cell has been widely used in many mixer circuits, this paper designed a down-conversion mixer which concludes class AB transconductor to improve linearity and LC tank to decrease voltage supply. The RF, LO and IF port frequencies are 2.4 GHz, 2.3 GHz and 100 MHz, respectively. Wi...

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Bibliographic Details
Main Authors: Zhao Jie, Chen Jun-ning, Hong Qi, Wei Zhen
Format: Conference Proceeding
Language:English
Subjects:
Circuits
ClassAB
CMOS
CMOS process
Frequency conversion
High Linearity
Linearity
Low voltage
Mixer
Mixers
Radio frequency
RF signals
Transconductance
Transconductors
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Summary:Traditional Gilbert cell has been widely used in many mixer circuits, this paper designed a down-conversion mixer which concludes class AB transconductor to improve linearity and LC tank to decrease voltage supply. The RF, LO and IF port frequencies are 2.4 GHz, 2.3 GHz and 100 MHz, respectively. With SMIC 0.18 um process, simulation results show -8dBm of P-ldB compression point and 5 dBm of IIP3 and 7.5 dB of conversion gain with -5 dBm LO power under 1.5 V supply voltage.
ISSN:2162-7541
2162-755X
DOI:10.1109/ICASIC.2007.4415708