A circuit topology that provides large bandwidth single-ended to differential conversion is presented. The proposed cell is based on a differential pair where feedback on common mode signal provides about 6 dB conversion gain increase, together with attenuation of common mode signal. Small-signal characterisation is presented, based on a block decomposition of the cell. Measurements on a SiGe test IC show more than 5 dB of gain improvement with respect to a simple differential pair.
An active balun for high-CMRR IC design / Centurelli, Francesco; Luzzi, Raimondo; Marietti, Piero; Scotti, Giuseppe; Tommasino, Pasquale; Trifiletti, Alessandro. - 3:(2005), pp. 1567-1570. ( 2005 European Microwave Conference Paris; Francia 2005).
An active balun for high-CMRR IC design
CENTURELLI, Francesco;Marietti, Piero;SCOTTI, Giuseppe;TOMMASINO, PASQUALE;TRIFILETTI, Alessandro
2005
Abstract
A circuit topology that provides large bandwidth single-ended to differential conversion is presented. The proposed cell is based on a differential pair where feedback on common mode signal provides about 6 dB conversion gain increase, together with attenuation of common mode signal. Small-signal characterisation is presented, based on a block decomposition of the cell. Measurements on a SiGe test IC show more than 5 dB of gain improvement with respect to a simple differential pair.| File | Dimensione | Formato | |
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Centurelli_Active-balun_post-print_2005.pdf
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