[Show abstract][Hide abstract] ABSTRACT: A low-power and high-performance RFCMOS SoC GPS receiver is introduced in this paper. It is fabricated in a 0.11 mum process with 6.2times6.2mmz TFBGA package. The power consumption is 34 mW during tracking stage and 45 mW during acquisition stage. The tracking sensitivity is up to -165 dBm with the most competitive TTFF performance. This GPS receiver is designed for PND/GSM/CDMA handsets and is compatible with various reference clock frequencies from 12.6 MHz to 40 MHz. It is a highly integrated solution with intelligent power management scheme and minimum external components. The RF performance is not affected by digital activities due to well-designed isolation schemes. The RF and system performance comparison and the chip micrograph is also illustrated.
[Show abstract][Hide abstract] ABSTRACT: Steep growth in location-based services and applications, riding on the wave of the mobile market, is expected in years to come. GPS/GALILEO engines embedded in cellular phones will allow network-based positioning, such as the GSM network and WCDMA network, to be implemented. However, challenging issues have to be overcome before the integration can be done successfully. This paper will discuss about the single RF front-end GPS equipped with GALILEO capability, designed to be integrated into an embedded system, such as the cellular phone. The receiver architecture is selected to have the flexibility for integrating into a larger system.