Design of a uniform amplitude time modulated linear array with optimized time sequences

Author

Yang, Shiwen ; Gan, Yeow Beng ; Qing, Anyong ; Tan, Peng Khiang

Author_Institution

Dept. of Microwave Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

53

Issue

7

fYear

2005

fDate

7/1/2005 12:00:00 AM

Firstpage

2337

Lastpage

2339

Abstract

A novel approach to realize uniform amplitude time modulated linear arrays with both suppressed sidelobes and sidebands is proposed. The approach utilizes the direct optimization of the "switch-on" time sequence of each array element via the simple genetic algorithm (SGA). As compared to previous time modulated linear arrays, the new array has the advantages of having low sidelobe level (SLL), low sideband level (SBL) and uniform excitations simultaneously. Experimental results on an experimental prototype of a 16-element printed dipole linear array with the SGA optimized time sequences verified the approach.

Keywords

amplitude modulation; dipole antenna arrays; genetic algorithms; linear antenna arrays; microstrip antenna arrays; optimisation; 16-element printed dipole linear array; SBL; SGA; SLL; optimized time sequence; sideband level; sidelobe level suppression; simple genetic algorithm; uniform amplitude time modulated linear array; Amplitude modulation; Antenna arrays; Design optimization; Dipole antennas; Frequency modulation; Gallium nitride; Genetic algorithms; Prototypes; Radio frequency; Switches; Antenna arrays; genetic algorithm (GA); time modulation;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2005.850765

Filename

1461564