TY - JOUR
T1 - Design of square-root domain filters
AU - Yu, Gwo Jeng
AU - Huang, Chun Yueh
AU - Liu, Bin Da
AU - Chen, Jenn Jiun
N1 - Funding Information:
This work was supported in part by the Chip Implementation Center and in part by the MOE Program for Promoting Academic Excellence of Universities under Grant EX-92-E-FA09-5-4.
PY - 2005/4
Y1 - 2005/4
N2 - In this paper, a square-root domain band-pass filter and biquad filter which are based on the MOSFET square law are proposed. Both of the square-root domain filters operated at 2.5 V supply voltage are constituted by current mirrors, current-mode square-root circuits and capacitors. The circuits presented have been simulated and fabricated using 0.25 μ m CMOS process. Both of simulation and measured results which are in good agreement indicate that the center frequency f 0 is not only attainable at megahertz frequencies but also tunable electronically. The proposed circuits have the merits of high frequency operation, tuneability, low power supply voltage operation, low third order intermodulation distortion and low total harmonic distortion.
AB - In this paper, a square-root domain band-pass filter and biquad filter which are based on the MOSFET square law are proposed. Both of the square-root domain filters operated at 2.5 V supply voltage are constituted by current mirrors, current-mode square-root circuits and capacitors. The circuits presented have been simulated and fabricated using 0.25 μ m CMOS process. Both of simulation and measured results which are in good agreement indicate that the center frequency f 0 is not only attainable at megahertz frequencies but also tunable electronically. The proposed circuits have the merits of high frequency operation, tuneability, low power supply voltage operation, low third order intermodulation distortion and low total harmonic distortion.
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U2 - 10.1007/s10470-005-6570-2
DO - 10.1007/s10470-005-6570-2
M3 - Article
AN - SCOPUS:17444396348
SN - 0925-1030
VL - 43
SP - 49
EP - 59
JO - Analog Integrated Circuits and Signal Processing
JF - Analog Integrated Circuits and Signal Processing
IS - 1
ER -