Biologically inspired antenna array design 1 2 3 4 using Ormia modeling Murat Akcakaya1 , Carlos Muravchik2 and Arye Nehorai3 1 Electrical and Computer Engineering Department University of Pittsburgh Pittsburgh, PA, USA email:
[email protected] 2 LEICI, Departamento Electrotecnia, Universidad Nacional de La Plata, La Plata, Argentina email:
[email protected] 3 Department of Electrical and Systems Engineering Washington University in St. Louis, St. Louis, MO, USA email:
[email protected] 1 This chapter is based on the dissertation work completed by Dr. Murat Akcakaya when he was in Washington University in St. Louis 2 Based on Akcakaya, M. Muravchik, C. M and Nehorai, A. (2011) ‘ Biologically inspired coupled antenna array for direction of arrival estimation’, IEEE Transactions on Signal Processing, 59 (10), 4795-4808. 3 Based on Akcakaya, M and Nehorai, A. (2010) ‘ Biologically inspired coupled antenna beampattern design’ , Bioinspiration and Biomimetics, 5 (4) , 046003. 4 The work of Dr. Arye Nehorai was funded by NSF grant CCF-0963742. 1 Abstract This chapter describes the design of a small-size antenna array having high direction of arrival (DOA) estimation accuracy and radiation performance, inspired by female Ormia ochraceas’ coupled ears. Female Ormias are able to locate male crickets' call accurately, for reproduction purposes, despite the small distance between its ears compared with the incoming wavelength. This phenomenon has been explained by the mechanical coupling between the Ormia's ears, modeled by a pair of differential equations. In this chapter, we first solve the differential equations governing the Ormia ochracea's ear response, and propose to convert the response to pre-specified radio frequencies.