Abstract: Provided is a Global Positioning System (GPS) receive sensitivity-improving apparatus and method in a Code Division Multiple Access (CDMA) mobile terminal, which improves a GPS receive sensitivity by preventing a reference frequency variation caused by a thermal transient in the CDMA mobile terminal. The mobile terminal includes a transmitter equipped with CDMA/PCS (Personal Communication System) Power Amplifying Modules (PAMs) and a receiver equipped with a CDMA/PCS reception module and a GPS reception module. The CDMA/PCS PAMs remain turned on irrespective of the mobile terminal's operation modes. The CDMA/PCS reception module is turned on in a CDMA/PCS mode, and the GPS reception module is turned on in a GPS mode. The GPS receive sensitivity-improving apparatus and method prevents a GPS receive sensitivity from being affected by a module arrangement on the PCB of the mobile terminal, thereby making it possible to manufacture smaller, lighter and more compact mobile terminals.

Abstract: A measuring apparatus with storage that measures and analyzes both stray currents from subway rails or power lines and the pipe-to-soil voltage of a buried metallic structure simultaneously is disclosed. The data measuring apparatus with storage for measuring stray currents from subway rails or power lines and the pipe-to-soil voltage of a buried metallic structure in accordance with the present invention comprises measuring means, which is a portable module that allows easy installation at one or multiple measurement points of the buried metallic structure, for measuring stray currents from the subway rails or power lines and the pipe-to-soil voltage of a buried metallic structure simultaneously and for storing and transmitting the measurement data and analytic computing means for receiving the measurement data transmitted from the measuring means and for databasing and graphically displaying the received measurement data for time-synchronous data analysis.

Abstract: Disclosed is an apparatus for stabilizing a transmission power of a CDMA mobile communication terminal which adaptively stabilizes the transmission power according to a data rate. In case of transmitting the transmission signal having the maximum data rate with the maximum power, the variation of the transmission power is minimized by driving the stabilizing apparatus, and in other cases, the transmission power is controlled so as to keep a constant power without driving the stabilizing apparatus.

Abstract: Provided is a Global Positioning System (GPS) receive sensitivity-improving apparatus and method in a Code Division Multiple Access (CDMA) mobile terminal, which improves a GPS receive sensitivity by preventing a reference frequency variation caused by a thermal transient in the CDMA mobile terminal. The mobile terminal includes a transmitter equipped with CDMA/PCS (Personal Communication System) Power Amplifying Modules (PAMs) and a receiver equipped with a CDMA/PCS reception module and a GPS reception module. The CDMA/PCS PAMs remain turned on irrespective of the mobile terminal's operation modes. The CDMA/PCS reception module is turned on in a CDMA/PCS mode, and the GPS reception module is turned on in a GPS mode. The GPS receive sensitivity-improving apparatus and method prevents a GPS receive sensitivity from being affected by a module arrangement on the PCB of the mobile terminal, thereby making it possible to manufacture smaller, lighter and more compact mobile terminals.

Abstract: Disclosed is an apparatus for stabilizing a transmission power of a CDMA mobile communication terminal which adaptively stabilizes the transmission power according to a data rate. In case of transmitting the transmission signal having the maximum data rate with the maximum power, the variation of the transmission power is minimized by driving the stabilizing apparatus, and in other cases, the transmission power is controlled so as to keep a constant power without driving the stabilizing apparatus.