A 5-Gb/s 2.1–2.2-GHz Bandpass \Delta \Sigma Modulator for Switch-Mode Power Amplifier

P. Ostrovskyy, H. Gustat, M. Ortmanns, C. Scheytt, Microwave Theory and Techniques, IEEE Transactions On 60 (2012) 2524–2531.

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Abstract
A tunable fourth-order bandpass ΔΣ modulator (BDSM) designed and fabricated in 0.25μm SiGe BiCMOS technology is presented. The designed modulator relaxes switching conditions for the amplification stage of the switch-mode power amplifier in comparison to the BDSM architecture. The BDSM is clocked at 5 GHz, while the notch frequency can be tuned in a range of 2.1-2.2 GHz. The modulator achieves 46.6-dB signal-to-noise and distortion ratio in 10-MHz bandwidth for a sine-wave input at 2.2 GHz consuming 330 mW from a 3-V supply. The BDSM was also tested with a single-channel WCDMA signal. It has demonstrated 42.2-dBc adjacent channel leakage ratio at 5-MHz offset and less than 2.1% error vector magnitude over the tuning range.
Publishing Year
Journal Title
Microwave Theory and Techniques, IEEE Transactions on
Volume
60
Issue
8
Page
2524-2531
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Ostrovskyy P, Gustat H, Ortmanns M, Scheytt C. A 5-Gb/s 2.1–2.2-GHz Bandpass \Delta \Sigma Modulator for Switch-Mode Power Amplifier. Microwave Theory and Techniques, IEEE Transactions on. 2012;60(8):2524-2531. doi:10.1109/TMTT.2012.2203143
Ostrovskyy, P., Gustat, H., Ortmanns, M., & Scheytt, C. (2012). A 5-Gb/s 2.1–2.2-GHz Bandpass \Delta \Sigma Modulator for Switch-Mode Power Amplifier. Microwave Theory and Techniques, IEEE Transactions On, 60(8), 2524–2531. https://doi.org/10.1109/TMTT.2012.2203143
@article{Ostrovskyy_Gustat_Ortmanns_Scheytt_2012, title={A 5-Gb/s 2.1–2.2-GHz Bandpass \Delta \Sigma Modulator for Switch-Mode Power Amplifier}, volume={60}, DOI={10.1109/TMTT.2012.2203143}, number={8}, journal={Microwave Theory and Techniques, IEEE Transactions on}, author={Ostrovskyy, Philip and Gustat, Hans and Ortmanns, Maurits and Scheytt, Christoph}, year={2012}, pages={2524–2531} }
Ostrovskyy, Philip, Hans Gustat, Maurits Ortmanns, and Christoph Scheytt. “A 5-Gb/s 2.1–2.2-GHz Bandpass \Delta \Sigma Modulator for Switch-Mode Power Amplifier.” Microwave Theory and Techniques, IEEE Transactions On 60, no. 8 (2012): 2524–31. https://doi.org/10.1109/TMTT.2012.2203143.
P. Ostrovskyy, H. Gustat, M. Ortmanns, and C. Scheytt, “A 5-Gb/s 2.1–2.2-GHz Bandpass \Delta \Sigma Modulator for Switch-Mode Power Amplifier,” Microwave Theory and Techniques, IEEE Transactions on, vol. 60, no. 8, pp. 2524–2531, 2012, doi: 10.1109/TMTT.2012.2203143.
Ostrovskyy, Philip, et al. “A 5-Gb/s 2.1–2.2-GHz Bandpass \Delta \Sigma Modulator for Switch-Mode Power Amplifier.” Microwave Theory and Techniques, IEEE Transactions On, vol. 60, no. 8, 2012, pp. 2524–31, doi:10.1109/TMTT.2012.2203143.

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