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A Blocker-Tolerant, Noise-Cancelling Receiver Suitable for Wideband Wireless Applications

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7 Author(s)
Murphy, D. ; Dept. of Electr. Eng., Univ. of California, Los Angeles, Los Angeles, CA, USA ; Darabi, H. ; Abidi, A. ; Hafez, A.A.
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A new wideband receiver architecture is proposed that employs two separate passive-mixer-based downconversion paths, which enables noise cancelling, but avoids voltage gain at blocker frequencies. This approach significantly relaxes the trade-off between noise, out-of-band linearity and wideband operation. The resulting prototype in 40 nm is functional from 80 MHz to 2.7 GHz and achieves a 2 dB noise figure, which only degrades to 4.1 dB in the presence of a 0 dBm blocker.

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Solid-State Circuits, IEEE Journal of  (Volume:47 ,  Issue: 12 )