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primary topic: Synthesis of Time-Modulated Linear Arrays with Quantized On-Time for Secure Communications

Synthesis of Time-Modulated Linear Arrays with Quantized On-Time for Secure Communications
type: Thesis
type: Article
abstract: In the last years, time-modulated arrays have gained a growing interest since they overcome some classical drawbacks of the amplitude-weight control by arbitrarily shaping the radiated pattern by means of the modulation of the static excitations with a set of radiofrequency (RF) switches. Nevertheless, two main problems have limited the consideration of this type of array in the past: the necessity to use reliable RF switches operating at high frequency, and the generation of unwanted harmonics, the so called sideband radiation (SR), which represent a loss in term of radiated power. The new generation of RF switches thanks to the recent advance in nano-technologies are able to satisfy the operative requirements; moreover, the use of global optimization algorithms have shown that the problem of the sideband radiation can be properly handled. In the recent years, time-modulated arrays have been studied by a new perspective in which part of the sideband radiation is exploited for useful purposes. In this framework, this project is aimed to propose a novel synthesis technique for security applications based on a customized version of the genetic algorithms. More in detail, the modified-GA developed in leterature will be exploited to determine suitable pulse sequences (with quantized/splitted on-time) to keep fixed the instantaneous directivity during the modulation period, in order to nullify the sideband radiation (SR) along the direction of the desired signal and to exploit the SR to encrypt the signal radiated in the sidelobe region.
date: 2014-09-17
status: published
author list: authors
type: EPrint
type: ThesisEPrint
is part of: repository
has document: Synthesis of Time-Modulated Linear Arrays with Quantized On-Time for Secure Communications (Text)
has document: Synthesis of Time-Modulated Linear Arrays with Quantized On-Time for Secure Communications (Other)
subject: M EA Evolutionary Algorithms

Synthesis of Time-Modulated Linear Arrays with Quantized On-Time for Secure Communications (Text)
type: Document
has file: Abstract.A547.pdf
has part: Abstract.A547.pdf

University of Trento
type: Organization

ELEDIA Research Center @ DISI, University of Trento
type: Organization

A. Tamponi
type: Person
given name: A.
family name: Tamponi

Synthesis of Time-Modulated Linear Arrays with Quantized On-Time for Secure Communications (Other)
type: Document
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Synthesis of Time-Modulated Linear Arrays with Quantized On-Time for Secure Communications (Other)
type: Document
is version of: Synthesis of Time-Modulated Linear Arrays with Quantized On-Time for Secure Communications (Text)
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Synthesis of Time-Modulated Linear Arrays with Quantized On-Time for Secure Communications (Other)
type: Document
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Synthesis of Time-Modulated Linear Arrays with Quantized On-Time for Secure Communications (Other)
type: Document
is version of: Synthesis of Time-Modulated Linear Arrays with Quantized On-Time for Secure Communications (Text)
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Synthesis of Time-Modulated Linear Arrays with Quantized On-Time for Secure Communications (Other)
type: Document
is version of: Synthesis of Time-Modulated Linear Arrays with Quantized On-Time for Secure Communications (Text)
is volatile version of: Synthesis of Time-Modulated Linear Arrays with Quantized On-Time for Secure Communications (Text)
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primary topic: Synthesis of Time-Modulated Linear Arrays with Quantized On-Time for Secure Communications

M EA Evolutionary Algorithms
type: Concept