TY - GEN
T1 - A common gate mixer with transconductance nonlinearity cancellation
AU - Kim, Tae Wook
PY - 2009
Y1 - 2009
N2 - A highly linear Common Gate (CG) mixer is designed using transconductance linearization technique combined with elimination of harmonic feedback effect. One of the major contributors of third order nonlinearity in the mixer is the second derivative of transconductor (gm″). The Multiple Gated Transistor (MGTR) technique is employed in the transconductor of CG mixer to linearize the mixer. Also, an RF current source is used to remove harmonic feedback components which limit IIP3 enhancement. With CG MGTR transconductor, a LC folded cascode current commutating mixer is proposed. The proposed CG mixer for 900MHz CDMA application is designed with 0.13μm CMOS technology. Simulation result shows that conversion gain of 7dB NF of 15dB and IIP 3 of 20dBm while consuming 5.4mA at 1.2 V supply. Compared with conventional design, the proposed one shows 10dB IIP 3 improvement.
AB - A highly linear Common Gate (CG) mixer is designed using transconductance linearization technique combined with elimination of harmonic feedback effect. One of the major contributors of third order nonlinearity in the mixer is the second derivative of transconductor (gm″). The Multiple Gated Transistor (MGTR) technique is employed in the transconductor of CG mixer to linearize the mixer. Also, an RF current source is used to remove harmonic feedback components which limit IIP3 enhancement. With CG MGTR transconductor, a LC folded cascode current commutating mixer is proposed. The proposed CG mixer for 900MHz CDMA application is designed with 0.13μm CMOS technology. Simulation result shows that conversion gain of 7dB NF of 15dB and IIP 3 of 20dBm while consuming 5.4mA at 1.2 V supply. Compared with conventional design, the proposed one shows 10dB IIP 3 improvement.
UR - http://www.scopus.com/inward/record.url?scp=77949366304&partnerID=8YFLogxK
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U2 - 10.1109/ASICON.2009.5351319
DO - 10.1109/ASICON.2009.5351319
M3 - Conference contribution
AN - SCOPUS:77949366304
SN - 9781424438686
T3 - ASICON 2009 - Proceedings 2009 8th IEEE International Conference on ASIC
SP - 458
EP - 460
BT - ASICON 2009 - Proceedings, 2009 8th IEEE International Conference on ASIC
T2 - 2009 8th IEEE International Conference on ASIC, ASICON 2009
Y2 - 20 October 2009 through 23 October 2009
ER -