Weijia Wu
ABSTRACT
Wireless receivers with multiple modes and standards require highly linear Pre-filters to prevent strong out-of-band blocker signals from corrupting in-band signals. A prefaced SAW(surface acoustic wave) filter needed in conventional receiver structures is neither tunable nor fully integrated. However, when the multiple frequency bands demand to be supported, the combination of multiple SAW filters increases the circuit's size and cost. This paper introduces a fully integrated, reconfigurable wideband wireless receiver based on N-path technology. The circuit utilizes 65nm CMOS technology and applies the Gain-Boosted approach to reduce the noise factor to 3.3dB. The out-of-band suppression ability of the circuit is improved by N-path technology, and the out-of-band IIP3 is up to +33.51dBm. The circuit's power consumes 46-72mW at 0.5-2GHz frequency, and the layout area is 700*1000μm2.
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Index Terms
- A High-Linearity CMOS Receiver based on N-path Technology in Wideband Operation
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