Multipath mitigation

Details Multipath mitigation Multipath mitigation

2011-02-01

2011-02-01

Tarcza, Thomas H (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

Reexamination Certificate

active

07880675

ABSTRACT:
Mitigation of the effects of multipath signals is provided. Such mitigation can include electronically steering the main beam of a receive pattern associated with a phased array antenna away from a transmitting antenna. In addition, a phase taper is applied to groups of antenna elements to create a null in the main beam, bifurcating that beam. The multipath signal may be placed in or towards the null, while the direct path signal may be placed on one of the halves of the main beam adjacent the null, such that the signal strength of the multipath signal is attenuated as compared to the signal strength of the direct path signal.

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Amin Al-Ka'Bi, Marek Bialkowski and John Homer, “Mitigation of multipath propagation with the use of a non-uniform spaced adaptive array antenna”, School of Information Technology and Electrical Engineering, The University of Queensland, 2005, pp. 56-59.
Seungyeun Yoo, Sangheon Kim, Dae Hee Youn, and Chungyong Lee, “Multipath Mitigation Technique Using Null-Steering Beamformer for Positioning System”, MCSP Lab, School of Electrical and Electronic Eng., Yonsei University, 2003, pp. 602-605.

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