A 1.3 V, 65nm CMOS, coilless combined feedback LNA with integrated single coil notch filter

Bormann, Dirk; Werth, Tobias D.; Schmits, Christoph; Heinen, Stefan

doi:10.1109/rfic.2009.5135547

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2009

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Cited by 8 publications

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“…The active circuits and filter have to withstand the blocker signals or they have to filter them out. The architectures given in [1] and [2] eliminate blockers in the LNA that are close to the receive frequency. The main problem of these circuits is that they have to know the blocker frequency.…”

Section: Introductionmentioning

confidence: 99%

A new Q-enhancement architecture for SAW-less communication receiver in 65-nm CMOS

Schmits

Werth

Hausner

2009

2009 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)

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A 2.5V second order RF bandpass filter is presented. A new Q-enhancement structure stacked on a LNA is fabricated in a 65-nm CMOS process with a die area of 1.1 mm x 1.1 mm. The frequency range is adjustable in a 25% range from 1.7 GHz to 2.2 GHz while the Q is adjustable up to 50. Q and the center frequency are adjusted by binary weighted switchable capacitors. The filter draws 42 mA including the buffers from a 2.5 V supply and has an input referred out-of-band 1-dB compression point of 0 dBm. The measured in-band NF is between 5.4 and 6.2 dB.

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Section: Introductionmentioning

confidence: 99%