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Multichannel broadband Fano theory for arbitrary lossless antennas with applications in DOA estimation

Publiceringsår: 2005
Språk: Engelska
Sidor: 969-972
Publikation/Tidskrift/Serie: Proceedings IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP '05)
Volym: 4
Dokumenttyp: Konferensbidrag
Förlag: IEEE Press


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.



  • Technology and Engineering
  • equivalent circuits
  • multiport networks
  • impedance matching
  • direction-of-arrival estimation
  • array signal processing
  • antenna arrays
  • Gaussian noise
  • S-parameters
  • Q-factor


IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP '05)
18-23 March, 2005
Philadelphia, USA
  • Electromagnetic theory
  • ISSN: 1520-6149
  • ISBN: 0-7803-8874-7

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