A New Approach to Complex Bandpass Sigma Delta Modulator Design for GPS/Galileo Receiver

Nima Ahmadpoor, Ebrahim Farshidi

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DOI: 10.4236/cs.2012.31006                

Abstract

In this paper, new complex band pass filter architecture for continuous time complex band pass sigma delta modulator is presented. In continuation of paper the modulator is designed for GPS and Galileo receiver. This modulator was simulated in standard 0.18 μm CMOS TSMC technology and has bandwidth of 2MHz and 4MHz for GPS and Galileo centered in 4.092 MHz. The dynamic range (DR) is 56.5/49 dB (GPS/Galileo) at sampling rate of 125 MHz. The modulator has power consumption of 4.1 mw with 3 V supply voltage.

Keywords

Continuous Time; Quadrature; Sigma Delta; MOS; Modulator; OTA

Conflicts of Interest

The authors declare no conflicts of interest.

References

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