Title :
A Blocker-Tolerant, Noise-Cancelling Receiver Suitable for Wideband Wireless Applications
Author :
Murphy, David ; Darabi, Hooman ; Abidi, Asad ; Hafez, Amr A. ; Mirzaei, Ahmad ; Mikhemar, Mohyee ; Chang, Mau-Chung Frank
Author_Institution :
Dept. of Electr. Eng., Univ. of California, Los Angeles, Los Angeles, CA, USA
Abstract :
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.
Keywords :
interference suppression; passive networks; radio receivers; blocker-tolerant; frequency 80 MHz to 2.7 GHz; noise cancelling; noise figure 2 dB; noise-cancelling receiver; out-of-band linearity; passive-mixer-based downconversion; size 40 nm; trade-off between noise; wideband receiver architecture; wideband wireless applications; CMOS integrated circuits; Impedance; Noise shaping; Radio frequency; Receivers; Wideband; CMOS; LNA; Receiver; SAW-less; blocker; linearity; mixer-first; noise-cancelling; non-overlapping clock generation; oversampling mixer; passive mixer; single-ended; wideband;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2012.2217832
