Design of square-root domain filters

Gwo Jeng Yu; Chun Yueh Huang; Bin Da Liu; Jenn Jiun Chen

doi:10.1007/s10470-005-6570-2

Design of square-root domain filters

Gwo Jeng Yu, Chun Yueh Huang, Bin Da Liu, Jenn Jiun Chen

Department of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	49-59
Number of pages	11
Journal	Analog Integrated Circuits and Signal Processing
Volume	43
Issue number	1
DOIs	https://doi.org/10.1007/s10470-005-6570-2
Publication status	Published - 2005 Apr

All Science Journal Classification (ASJC) codes

Signal Processing
Hardware and Architecture
Surfaces, Coatings and Films

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title = "Design of square-root domain filters",

abstract = "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.",

author = "Yu, {Gwo Jeng} and Huang, {Chun Yueh} and Liu, {Bin Da} and Chen, {Jenn Jiun}",

note = "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.",

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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.

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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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