Improved two-antenna direction finding inspired by human ears

Rongguo Zhou, Hualiang Zhang, Hao Xin

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


This paper presents an improved two-antenna microwave passive direction finding system inspired by the human auditory system. By incorporating a head-like scatterer between two monopole antennas, both phase and magnitude information can be utilized to estimate the direction of arrival (DOA) of a microwave signal, thus eliminating ambiguities associated with phase wrapping at high frequency, just like human ears. In addition, better DOA sensitivity is demonstrated with the incorporation of the head-like scatterer. Both numerical modeling and experimental results of a simple X-band two-monopole configuration with symmetric and asymmetric scatterers are presented.

Original languageEnglish (US)
Article number5765478
Pages (from-to)2691-2697
Number of pages7
JournalIEEE Transactions on Antennas and Propagation
Issue number7
StatePublished - Jul 2011


  • Biological inspired
  • direction of arrival (DOA) estimation
  • monopole

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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