Abstract This paper describes new proposed algorithms for constructing the transfer function of nth order Butterworth LPF using the idea of the cascade combination of active filters. Computer-aided design is used with new algorithms to achieve the procedure of constructing the transfer function and give the practical results of the nth order Butterworth active LPF. C++ program is used for desig...

The reduction of the soliton interaction by use of optical sliding-frequency second-order Butterworth filters is studied numerically. It is found that the second-order Butterworth filters can reduce the soliton interaction more effectively than Fabry-Perot filters or third-order Butterworth filters because the secondorder Butterworth filter induces larger frequency chirping on the soliton, comp...

The experimental and phenomenological status of high energy photoproduction is reviewed. Topics covered include the structure of the photon, production of jets, heavy flavours and prompt photons, rapidity gaps, energy flow and underlying events. The results are placed in the context of the current understanding of QCD, with particular application to present and future hadron and lepton colliders.

This paper presents a sixth order Butterworth switched capacitor (SC) low pass filter with radiationhardened-by-design (RHBD) for cryogenic applications. Implemented in a 0.5μm SiGe BiCMOS technology, this cryogenic SC filter is capable of operating over an ultrawide temperature (UWT) range from -180oC to 120oC and under high-energy particle radiation environment on the lunar surface. This is t...

--Electrocardiogram has considerable diagnostic significance, and application of ECG monitoring are diverse and in wide use. For diagnosticquality ECG recordings, signal acquisition must be noise free. The signal acquisition is susceptible to the interference from other biological and environmental sources. This article presents the application of the digital IIR filter on the raw ECG signal. T...

Everyday speech is littered with disfluency, often correlated with the production of less predictable words (e.g., Beattie & Butterworth [Beattie, G., & Butterworth, B. (1979). Contextual probability and word frequency as determinants of pauses in spontaneous speech. Language and Speech, 22, 201–211.]). But what are the effects of disfluency on listeners? In an ERP experiment which compared flu...

The LMF60 is a high performance, precision, 6th-order Butterworth lowpass active filter. It is fabricated using National’s LMCMOS process, an improved silicon-gate CMOS process specifically designed for analog products. Switchedcapacitor techniques eliminate external component requirements and allow a clock-tunable cutoff frequency. The ratio of the clock frequency to the low-pass cutoff freque...

An active RC filters with a 880 / 1760 MHz dual bandwidth tuning ability is present for 60 GHz unlicensed band applications. A third order Butterworth low-pass filter utilizes two Cherry-Hooper amplifiers to satisfy the very high bandwidth requirements of an amplifier. The low-pass filter is fabricated in 90nm standard CMOS process. Drawing 6.7 mW from 1.2 V power supply, the low frequency gain...

The precise Sobolev exponent s∞(φn) of the Butterworth refinable function φn associated with the Butterworth filter of order n, bn(ξ) := cos2n(ξ/2) cos2n(ξ/2)+sin2n(ξ/2) , is shown to be s∞(φn) = n log2 3+ log2(1+ 3−n). This recovers the previously given asymptotic estimate of s∞(φn) of Fan and Sun [1], and gives more accurate regularity of Butterworth refinable function φn. AMS 2000 Subject Cl...