Artículo
An Accurate Automatic Quality-Factor Tuning Scheme for Second-Order LC Filters
Autor/es | Bahmani, Faramarz
Serrano Gotarredona, María Teresa Sánchez Sinencio, Edgar |
Departamento | Universidad de Sevilla. Departamento de Arquitectura y Tecnología de Computadores |
Fecha de publicación | 2007 |
Fecha de depósito | 2020-10-08 |
Publicado en |
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Resumen | This paper presents a scheme to accurately tune the quality factor of second-order LC bandpass filters. The information of the magnitude response at the center and one of the cutoff frequencies is used to tune both the ... This paper presents a scheme to accurately tune the quality factor of second-order LC bandpass filters. The information of the magnitude response at the center and one of the cutoff frequencies is used to tune both the amplitude and the quality factor of the filter using two independent yet interacting loops. Furthermore, the synergic interaction between the loops makes the proposed scheme stable and insensitive to the mismatch between the input amplitudes. A chip prototype was implemented in a 0.35-mum CMOS process and consumes 4.3 mA from a single 1.3-V supply. Measurement results show that at 1.97 GHz the quality factor is tunable from 60 to 220 while the amplitude is tunable between -15 and 0 dBm with worst case quality factor and amplitude tuning accuracies of 10% and 7%, respectively |
Cita | Bahmani, F., Serrano Gotarredona, M.T. y Sánchez Sinencio, E. (2007). An Accurate Automatic Quality-Factor Tuning Scheme for Second-Order LC Filters. IEEE Transactions on Circuits and Systems I: Regular Papers, 54 (4), 745-756. |
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