Pulse-Shaping Strategy for Time Modulated Arrays—Analysis and Design

Author

Bekele, Ephrem T. ; Poli, Lorenzo ; Rocca, Paolo ; D´Urso, Michele ; Massa, A.

Author_Institution

Dept. of Inf. Eng. & Comput. Sci., Univ. of Trento, Trento, Italy

Volume

61

Issue

7

fYear

2013

fDate

7/1/2013 12:00:00 AM

Firstpage

3525

Lastpage

3537

Abstract

Time-modulated arrays (TMAs) are antenna systems where the transmitted or received signal is modulated by periodic time pulses. Several strategies have been proposed for defining the characteristics of the pulse sequence to control the antenna radiation pattern starting from the hypothesis of ideal radio-frequency (RF) switches with instantaneous rise and fall time. In this paper, the use of switches having a non-null transition between the on and off state is taken into account and the impact on the radiation features is studied and verified through a set of numerical results also in comparative fashion with ordinary rectangular pulses.

Keywords

antenna arrays; antenna radiation patterns; array signal processing; antenna radiation pattern; antenna systems; fall time; ideal radio-frequency switches; non-null transition; off state; on state; periodic time pulses; pulse sequence; pulse-shaping strategy; radiation features; received signal; rise time; time modulated arrays; transmitted signal; Beam-forming; pulse-shaping; sideband radiation; time modulated array (TMA);

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2013.2256096

Filename

6492099