eprintid: 443
rev_number: 6
eprint_status: archive
userid: 5
dir: disk0/00/00/04/43
datestamp: 2011-07-04
lastmod: 2013-07-01 09:02:46
status_changed: 2013-07-01 09:02:46
type: techreport
metadata_visibility: show
item_issues_count: 0
creators_name: Oliveri, Giacomo
creators_name: Lizzi, Leonardo
creators_name: Massa, Andrea
title: ADS Interleaved Arrays with Reconfigurable Polarization
ispublished: pub
subjects: TU
full_text_status: public
note: This version is a pre-print of the final version available at IEEE.
abstract: Polarization-reconfigurable arrays play a fundamental role in radar systems in order to enhance their detection probability and cancel clutters, chaffs, and jammers [1]. In order to reach polarization flexibility, the integration of actively controlled elements in standard array configurations is often employed [2], but the overall system complexity and costs significantly increase [3]. To overcome such limitations, the use of two shared aperture arrays with independent polarizations was proposed in [3] by exploiting an interleaving scheme based on Difference-Sets (DSs). By combining the field generated by each sub-array, arbitrary polarizations, low sidelobes, large steering angles, and narrow beamwidths can be reached with a limited complexity of the underlying feeding network. Despite its theoretical and practical advantages, only few planar array geometries can be synthesized because of the limited number of available DS sequences [4]. A different set of binary sequences [called Almost Difference Sets (ADSs)] [5][6] with properties very similar to those of DSs has been recently investigated. Besides their application in code theory [5], ADSs have already shown their effectiveness in synthesizing thinned arrays with low and predictable sidelobes [7][8]. This paper analyzes the properties of polarization-flexible planar arrays based on ADSs. Numerical simulations are presented and discussed by focusing on the sidelobe level control and the polarization selectivity of the synthesized ADS arrays.
date: 2011-01
date_type: published
institution: University of Trento
department: informaticat
refereed: FALSE
referencetext: [1] D. Giuli, “Polarization diversity in radars,” Proc. IEEE, vol. 74, no. 2, pp. 245-269, Feb. 1986. [2] S. Gao, A. Sambell, and S. S. Zhong, “Polarization-agile antennas”, IEEE Antennas Propagat. Mag., vol. 48, no. 3, pp. 28-37, June 2006. [3] M. Simeoni, I. E. Lager, C. I. Coman, and A. G. Roeder, “Implementation of polarization agility by means of interleaved subarrays”, Radio Sci., vol. 44, RS5013, 2009. [4] D. G. Leeper, “Isophoric arrays - massively thinned phased arrays with well-controlled sidelobes,” IEEE Trans. Antennas Propagat., vol. 47, no. 12, pp. 1825-1835, Dec 1999. [5] Y. Zhang, J. G. Lei, and S. P. Zhang, “A new family of almost difference sets and some necessary conditions,” IEEE Trans. Inf. Theory, vol. 52, no. 5, pp. 2052-2061, May 2006. [6] ELEDIA Almost Difference Set Repository (http://www.eledia.ing.unitn.it/ ). [7] G. Oliveri, M. Donelli, and A. Massa, “Linear array thinning exploiting almost difference sets," IEEE Trans. Antennas Propagat., vol. 57, no. 12, pp. 3800-3812, Dec. 2009. [8] G. Oliveri, L. Manica, and A. Massa, “ADS-Based guidelines for thinned planar arrays," IEEE Trans. Antennas Propagat., in press. [9] K. T. Arasu, C. Ding, T. Helleseth, P. V. Kumar, and H. M. Martinsen, “Almost difference sets and their sequences with optimal autocorrelation,” IEEE Trans. Inf. Theory, vol. 47, no. 7, pp. 2934-2943, Nov 2001. [10] C. A. Balanis, Antenna Theory: Analysis and Design, 2nd ed. New York: Wiley, 1997.
citation:   Oliveri, Giacomo and Lizzi, Leonardo and Massa, Andrea  (2011) ADS Interleaved Arrays with Reconfigurable Polarization.  [Technical Report]     
document_url: http://www.eledia.org/students-reports/443/1/DISI-11-162.C205.pdf