CMOS radio design for complete single chip GPS SoC : Lower-power LSI and lower-power IP
2005
A GPS radio design for a complete single chip GPS receiver using 0.18-μm CMOS is presented. The complete single chip GPS receiver satisfies several key requirements for mobile applications, such as compactness, low power, and high sensitivity. The radio part, including the RF front end, the RF/IF PLLs, and IF functions, occupies 2.0 x 2.3 mm in a total chip area of 6.3 x 6.3 mm. It is fabricated using 0.18-μm CMOS technology utilizing MIM capacitors. The radio part operates within a 1.6 to 2.0 V supply voltage range and consumes 27 mW at 1.8 V. The whole GPS SoC consumes 57 mW for a fully functional chip and provides a high sensitivity of -152 dBm. The radio design features countenneasures against substrate coupling noise from the digital part.
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