A 600mV 3.6mW 68dB DR 4th Order Analog
Base Band Filter for WLAN Receivers
Marcello De Matteis, Stefano D’Amico, Giuseppe Vergallo, Andrea Baschirotto
Engineering Innovation Department of University of Lecce
[email protected], [email protected], [email protected],
[email protected]
Microelectronics Group
Dep. of Innovation Engineering-University of Lecce
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Abstract
4th order base band filter for WLAN
receivers
Butterworth Low Pass Filter
Active Gm-RC
VDD=600mV
0.13µm CMOS technology@Vth = 300mV
Microelectronics Group
Dep. of Innovation Engineering-University of Lecce
2
WLAN Specifications
4th order base band filter for WLAN receivers
Complete Design
Layout
Specifications:
order
4th Butterworth
o
2 12MHz
G
0 dB
SNR
> 60dB
Microelectronics Group
Dep. of Innovation Engineering-University of Lecce
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Butterworth Low Pass Filter
Two Biquadratic Cells
Cell 1
Cell 2
ωo
2π∙12MHz
2π∙12 MHz
Q
1.3066
0.5412
G
0 dB
0 dB
Active Gm-RC
fUGBW,opamp ≈ fcut-off
R2
in+
in-
R1 C 1
out-
R1
out+
C1
R2
Microelectronics Group
Dep. of Innovation Engineering-University of Lecce
4
VDD=600mV
VDD=600mV
0.13µm CMOS technology@Vth = 300mV
VinDC
V DD
R1 R2

 IB 
2
R1  R2
Microelectronics Group
Dep. of Innovation Engineering-University of Lecce
5
VDD=600mV
VDD=600mV
0.13µm CMOS technology@Vth = 300mV
Input CMFB
Noise
No-Idealities
Stability
Microelectronics Group
Dep. of Innovation Engineering-University of Lecce
6
Conclusion - Simulation Results
Linearity / Noise
DR=68dB@THD=-40dBc
(vout=800mVpp,differential)
Total Power Consumption = 3.6 mW
Microelectronics Group
Dep. of Innovation Engineering-University of Lecce
7
Conclusion
Poster
Microelectronics Group
Dep. of Innovation Engineering-University of Lecce
8