On Passband and Stopband Cascaded-Integrator-Comb Improvements Using a Second Order IIR Filter
This paper proposes an efficient second order IIR filter which considerably improves the passband as well as the stopband of the cascaded-integrator-comb (CIC) filter. Using the polyphase decomposition of the proposed filter, all filtering can be moved to a lower rate, which is D times less than the...
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2012 |
| País: | México |
| Institución: | Instituto Nacional de Astrofísica, Óptica y Electrónica |
| Repositorio: | Repositorio Institucional del INAOE |
| Idioma: | inglés |
| OAI Identifier: | oai:inaoe.repositorioinstitucional.mx:1009/2086 |
| Acceso en línea: | http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/2086 |
| Access Level: | acceso abierto |
| Palabra clave: | info:eu-repo/classification/Inspec/CIC filter info:eu-repo/classification/Inspec/Compensated CIC filter info:eu-repo/classification/Inspec/IIR filter info:eu-repo/classification/Inspec/Decimation info:eu-repo/classification/cti/1 info:eu-repo/classification/cti/22 info:eu-repo/classification/cti/2203 |
| Sumario: | This paper proposes an efficient second order IIR filter which considerably improves the passband as well as the stopband of the cascaded-integrator-comb (CIC) filter. Using the polyphase decomposition of the proposed filter, all filtering can be moved to a lower rate, which is D times less than the high input rate, where D is the decimation factor. The overall phase response of the compensated CIC is approximately linear in the passband. The design parameters are the number of cascaded CIC filter N, the decimator factor D, the passband frequency ωp, and a weighted parameter α. |
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