Design and comparison of flipped active inductors with high quality factors
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Document typeArticle
Defense date2014-05-19
PublisherInstitution of Electrical Engineers
Rights accessRestricted access - publisher's policy
Abstract
A new design based on the flipped-structure for RF active inductors is presented. The conventional flipped-active inductor (FAI) composed of only two transistors is considered as a starting structure. However, it suffers from low-voltage swing, which increases the nonlinearity. Additionally, it requires high power consumption to achieve adequate inductance and quality factor values. A circuit topology named cascoded FAI (CASFAI) based on the basic FAI is proposed. A common-gate transistor added in the feedback path of the proposed CASFAI results in an increase of the voltage swing and linearity as well as the feedback gain. The performance metrics of such active inductors are benchmarked by analytical models and validated in the ADS using a 0.18 µm CMOS process. The results indicate that the CASFAI can achieve a notably higher quality factor and higher inductance values while consuming less power in comparison to the basic FAI.
CitationSaberkari, A. [et al.]. Design and comparison of flipped active inductors with high quality factors. "Electronics Letters", 19 Maig 2014, vol. 50, núm. 13, p. 925-927.
ISSN0013-5194
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