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A reconfigurable and simultaneous dual band Galileo/GPS front-end receiver has been realized on 0.13-mum RFCMOS technology. The front-end uses only one fixed frequency PLL and VCO on a superheterodyne architecture to down-convert two RF (radio frequency) signals into two IF (intermediate frequency) signals in the range of 50 MHz to 150 Mhz. L1 and E1 signals are directly converted on one channel with...
The modern telecommunication services require increasingly wide tuning bands and improved spectral purity in order to support the growing demand for high data rate in the new generation wireless standards. The resulting VCOs have to deal with a difficult trade-off between wide tuning bandwidth and phase-noise. The paper introduces a new VCO architecture with a double tuning control, the former coarse...
The paper focuses on the modeling of the noise contributions in a receiver architecture based on the sub-sampling theory. A detailed noise analysis is reported, leading to improved receiver design. The proposed model includes switched-capacitor noise, quantization noise and LNA noise. Receiver performance was evaluated using the GSM standard as a reference
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