Bandwidth - Power Optimization Methodology for SFB Filter Design

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In this paper, the relationship between the bandwidth (BW) and power efficiency of a source follower based (SFB) filter is quantitatively analyzed, and a design methodology for a SFB filter for optimized BW - power consumption is introduced. The proposed design methodology achieves a maximum BW at a target quality (Q) factor for the given power consumption constraint by controlling design factors individually. In order to achieve the target BW from the maximized BW, a tuning method is introduced. Through the proposed design methodology, a fourth order Butterworth filter was implemented in 0.18 mu m CMOS technology. The measured BW, power consumption, and IIP3 are 100 MHz, 33 mu W, and 9 dBm, respectively. Compared with other filter structures, the measured results show high BW power efficiency.
Publisher
IEEK PUBLICATION CENTER
Issue Date
2012-03
Language
English
Article Type
Article
Keywords

CONTINUOUS-TIME FILTER; LOW-PASS FILTER; MODE

Citation

JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE, v.12, no.1, pp.88 - 98

ISSN
1598-1657
DOI
10.5573/JSTS.2012.12.1.88
URI
http://hdl.handle.net/10203/102861
Appears in Collection
EE-Journal Papers(저널논문)
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