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

Volume

1

fYear

2003

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2003 IEEE MTT-S International

Conference_Location

Philadelphia, PA, USA

ISSN

0149-645X

Print_ISBN

0-7803-7695-1

Type

conf

DOI

10.1109/MWSYM.2003.1211031

Filename

1211031