On-die self-healing of mixer image-rejection ratio for mixed-signal electronic systems

An integrated wideband (6-20 GHz) image-reject mixer and test signal source for "self-healing" of image-rejection ratio (IRR) is demonstrated for the first time. The mixer can be adapted to deliver consistent performance over process variations, environmental changes, and/or aging effects....

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Bibliographic Details
Published in2012 IEEE Bipolar/BiCMOS Circuits and Technology Meeting (BCTM) pp. 1 - 4
Main Authors Shankar, S., Saha, P., Howard, D. C., Diestelhorst, R., England, T. D., Cardoso, A. S., Cressler, J. D.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2012
Subjects
Couplers
Linearity
Mixers
Radio frequency
Silicon germanium
Tuning
Wideband
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Summary:An integrated wideband (6-20 GHz) image-reject mixer and test signal source for "self-healing" of image-rejection ratio (IRR) is demonstrated for the first time. The mixer can be adapted to deliver consistent performance over process variations, environmental changes, and/or aging effects. An IRR of over 36 dB is obtained in measurement for a wide range of IF frequencies. The healing is achieved by means of an automated procedure controlled by MATLAB algorithms. The test signal source consists of an on-die wideband differential ring oscillator with an amplitude-control mechanism to provide a 20 dB range of adjustable power at the input of the mixer. The circuits were fabricated in a commercially-available 180 nm SiGe BiCMOS platform.
ISBN:1467330205
9781467330206
ISSN:1088-9299
2378-590X
DOI:10.1109/BCTM.2012.6352658