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Extending the bandwidth of low-noise microwave amplifier through digital assist

Extending the bandwidth of low-noise microwave amplifier through digital assist

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The 3 dB bandwidth of a low-noise amplifier (LNA) is increased by 23% from a range of 1–6.7 GHz to a range of 1–8.25 GHz through digital assist. The LNA has a multi-stage topology and the gate bias voltages are dynamically optimised in real-time to obtain the best gain and noise figure as a function of the signal input frequency.

References

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      • 4. Bruccoleri, F., Klumperink, E., Nauta, B.: ‘Noise cancelling in wideband CMOS LNAs’. IEEE Int. Solid-State Circuits Conf., San Francisco, CA, USA, February 2002, Vol. 1, pp. 406407.
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