Title :
Improving the isolation of GPS receivers for integration with wireless communication systems
Author :
Spiegel, Solon ; Thiel, Andreas ; Nussbaumer, Sven ; Kovacs, Imre ; Durler, Marcel
Author_Institution :
u-blox AG, Switzerland
Abstract :
The impact of the inter-system and the intra-system isolations on the performance of GPS receivers is analyzed. The grounding, shielding and de-coupling structures were optimized to minimize the level of intra-system interference in the receiver. By reducing the intra-system interference, high sensitivity and high immunity to jamming signals were simultaneously achieved. The sensitivity value below the -141dBm and CW power level of 4dBm, 2dBm and 2dBm in the DCS1800, IS-95 and WCDMA frequency ranges respectively for 3dB degradation of the carrier to noise ratio were obtained.
Keywords :
Global Positioning System; cellular radio; code division multiple access; digital radio; earthing; electromagnetic shielding; jamming; sensitivity; DCS1800; GPS receivers; IS-95; WCDMA; carrier to noise ratio; de-coupling structures; grounding; immunity; inter-system isolations; intra-system isolations; isolation; jamming signals; sensitivity; sensitivity value; shielding; wireless communication systems; Degradation; Frequency; Global Positioning System; Grounding; Interference; Jamming; Multiaccess communication; Noise level; Performance analysis; Wireless communication;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2003 IEEE
Print_ISBN :
0-7803-7694-3
DOI :
10.1109/RFIC.2003.1214009
