Title :
Improving the isolation of GPS receivers for integration with wireless communication systems
Author :
Spiegel, S. ; Thiel, A. ; Nussbaumer, S. ; Kovacs, I. ; Durler, M.
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 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 4 dBm, 2 dBm and 2 dBm in the DCS1800, IS-95 and WCDMA frequency ranges respectively for 3 dB degradation of the carrier to noise ratio were obtained.
Keywords :
Global Positioning System; earthing; electromagnetic shielding; jamming; radio receivers; radiofrequency interference; CW power level; DCS1800; GPS receiver; IS-95; WCDMA; carrier-to-noise ratio; de-coupling structure; grounding structure; inter-system isolation; intra-system interference; intra-system isolation; jamming signal immunity; sensitivity; shielding structure; wireless communication system; Degradation; Frequency; Global Positioning System; Grounding; Interference; Jamming; Multiaccess communication; Noise level; Performance analysis; Wireless communication;
Conference_Titel :
Microwave Symposium Digest, 2003 IEEE MTT-S International
Conference_Location :
Philadelphia, PA, USA
Print_ISBN :
0-7803-7695-1
DOI :
10.1109/MWSYM.2003.1211031
