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This paper provides a mobile GIS solution which can provide LBS by adding an external Bluetooth GPS receiver, toward the mobile terminal which does not have in-line GPS-function. Through an external Bluetooth GPS receiver, the mobile terminal can get current position's coordinate, and create the gird map which marks the mobile terminal's current position. Terminal receive this map can easily find...
In this paper, a high power supply rejection (PSR) CMOS bandgap circuit applied in RF receiver is presented. A precise and simple PSR model, useful for pencil and paper analysis is hereby developed for the circuit. By analyzing the model, the ways to improve the circuit's performance of PSR in both low and high frequency domain are presented. The PSR of the circuit can reach 102 dB at low frequency...
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