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A receiver architecture aiming to receive the L1-band multi-standard Global Navigation Satellite System signals simultaneously is described in this paper. In the proposed receiver, the GPS/Galileo and GLONASS signals are treated as the unwanted image signals for each other, and rejected for the respective down-conversion outputs. The receiver was implemented in TSMC 90-nm CMOS process and achieves...
A dual RF-receiver preceded by discrete-step attenuators is implemented in 65nm CMOS and operates from 0.3–1.0 GHz. The noise of the receivers is reduced by cross-correlating the two receiver outputs in the digital baseband, allowing attenuation of the RF input signal to increase linearity. With this technique a displayed average noise level below −169 dBm/Hz is obtained with +25 dBm IIP3, giving...
A fully-integrated quadrature low-IF L1-band GPS receiver consumes only 6.4 mW in 0.13 μm CMOS. The RF front-end features a gate-modulated quadrature VCO for low phase noise and accurate quadrature phase signal generation. It merges the LNA, quadrature mixer, and quadrature VCO in a single current-reuse stacked topology that provides a conversion gain 42.5 dB with a power consumption of 1 mW. A continuous-time...
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