Reduction of Sidelobes by Nonuniform Elements Spacing of a Spherical Antenna Array
Abstract
This paper presents a significant sidelobe reduction if nonuniform elevational spacing of antenna elements on the sphere is used. Antenna elements are progressively phased with a uniform amplitude excitation. The calculation of the required element position is presented. The achieved sidelobe level reduction with unequally spaced arrays could reach even more than 20dB difference with regard to the first significant sidelobe level of equally spaced arrays. By this method, arrays have the ability to produce the desired radiation pattern and could satisfy requirements for many applications.
Keywords
Radiation pattern, spherical array, sidelobe level reduction, uniform and nonuniform distribution of antenna elementsPersistent identifier
http://hdl.handle.net/11012/56835Document type
Peer reviewedDocument version
Final PDFSource
Radioengineering. 2011, vol. 20, č. 1, s. 299-306. ISSN 1210-2512http://www.radioeng.cz/fulltexts/2011/11_01_299_306.pdf
Collections
- 2011/1 [55]