dc.creator | Pourashraf, Shirin | es |
dc.creator | Ramírez Angulo, Jaime | es |
dc.creator | López Martín, Antonio J. | es |
dc.creator | González Carvajal, Ramón | es |
dc.creator | Algueta Miguel, José María | es |
dc.date.accessioned | 2023-01-19T17:07:30Z | |
dc.date.available | 2023-01-19T17:07:30Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | Pourashraf, S., Ramírez Angulo, J., López Martín, A.J., González Carvajal, R. y Algueta Miguel, J.M. (2018). An Op-Amp Approach for Bandpass VGAs With Constant Bandwidth. IEEE Transactions on Circuits and Systems. Part 2: Express Briefs, 65 (9), 1144-1148. https://doi.org/10.1109/TCSII.2018.2808236. | |
dc.identifier.issn | 1549-7747 | es |
dc.identifier.uri | https://hdl.handle.net/11441/141600 | |
dc.description.abstract | Two approaches to implement variable gain amplifiers based on Miller op-amps are discussed. One has true constant bandwidth while the other has essentially reduced bandwidth variations with varying gain. Servo-loops and ac coupling techniques with quasi floating gate transistors are used to provide a bandpass response with very low cutoff frequency in the range of hertz. In practice, one of the schemes is shown to have bandwidth variations close to a factor two while the second one has true constant bandwidth over the gain tuning range. Experimental results of test chip prototypes in 180-nm CMOS technology verify the theoretical claims. | es |
dc.format | application/pdf | es |
dc.format.extent | 5 p. | es |
dc.language.iso | eng | es |
dc.publisher | IEEE (Institute of Electrical and Electronics Engineers) | es |
dc.relation.ispartof | IEEE Transactions on Circuits and Systems. Part 2: Express Briefs, 65 (9), 1144-1148. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Constant bandwidth | es |
dc.subject | VGA | es |
dc.subject | Servo-loop | es |
dc.subject | AC coupled amplifiers | es |
dc.subject | QFG transistors | es |
dc.title | An Op-Amp Approach for Bandpass VGAs With Constant Bandwidth | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/acceptedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Ingeniería Electrónica | es |
dc.relation.publisherversion | https://ieeexplore.ieee.org/abstract/document/8299464 | es |
dc.identifier.doi | 10.1109/TCSII.2018.2808236 | es |
dc.journaltitle | IEEE Transactions on Circuits and Systems. Part 2: Express Briefs | es |
dc.publication.volumen | 65 | es |
dc.publication.issue | 9 | es |
dc.publication.initialPage | 1144 | es |
dc.publication.endPage | 1148 | es |