Multichannel broadband Fano theory for arbitrary lossless antennas with applications in DOA estimation
Publikation/Tidskrift/Serie: Proceedings IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP '05)
Förlag: IEEE--Institute of Electrical and Electronics Engineers Inc.
In this paper, we consider fundamental limitations for DOA estimation with arbitrary lossless antennas or antenna arrays inserted inside a sphere. Spherical vector modes and their associated equivalent circuits and Q factor approximations are employed as a general framework for the analysis. The classical broadband matching theory by Fano is extended to a general multiport S-parameter model of the antennas and fundamental bounds are given for the scattering parameters with respect to bandwidth and electrical size of the sphere. Finally, assuming a statistical signal model with Gaussian receiver noise, the Cramer-Rao lower bound is used to derive fundamental upper bounds for the performance of DOA estimation by a sphere.
- Electrical Engineering, Electronic Engineering, Information Engineering
- equivalent circuits
- multiport networks
- impedance matching
- direction-of-arrival estimation
- array signal processing
- antenna arrays
- Gaussian noise
2005 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
- Electromagnetic theory-lup-obsolete
- ISSN: 1520-6149
- ISBN: 0-7803-8874-7