Filter approximation problem using de algorithms

Martinek, P.; Bores, Petr; Tichá, Daša

doi:10.1109/ecctd.2009.5275079

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“…[14] is presented. Given frequency scaled parameters: Note that the obtained results, especially ω 0 -and Qsensitivities, are not influenced by the C 1 /C 2 ratio.…”

Section: An Examplementioning

confidence: 97%

A contribution to the 2<sup>nd</sup>-order LP filters design

Martinek

Valenta

Tichá

2011

Proceedings of 21st International Conference Radioelektronika 2011

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This paper discusses some aspects of design and realization of the simple second-order low-pass building blocks (LP-SFB), suitable for less demanding anti-aliasing and reconstruction filters. The main attention is devoted to the "single active device" solutions, based on CC-II type current conveyor or transconductance amplifier (OTA). As the template, the Rauch's multiple-feedback circuit was used. Presented SFBs show very low ω 0 and Q sensitivities and, in contrast to the known Sallen-Key circuits, save good stop-band attenuation. Proposed design uses DE algorithm and allows almost independent tunning of ω 0 and Q parameters.

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“…[14] is presented. Given frequency scaled parameters: Note that the obtained results, especially ω 0 -and Qsensitivities, are not influenced by the C 1 /C 2 ratio.…”

Section: An Examplementioning

confidence: 97%