Influence on side band radiation of uniformly excited TMAA during reduction of SLL of the main beam

Author

Mandal, S.K. ; Ghatak, Rowdra ; Mahanti, G.K.

Author_Institution

Nat. Inst. of Technol. Durgapur, Durgapur, India

fYear

2011

fDate

18-22 Dec. 2011

Firstpage

1

Lastpage

4

Abstract

In addition to the desired frequency, theoretically the Time Modulated Antenna Array (TMAA) radiates signals at the infinite number of different harmonics of the modulation frequency. But the radiation energy at the first few harmonics (called sidebands) is most significant. In this paper, the maximum radiation at first two harmonics of TMAA has been studied for the different values of the side lobe levels (SLLs) of the main beam. The SLLs of the main beam of TMAA are varied from - 15dB to - 50dB with almost - 5dB interval. Global search and optimization algorithm GA is used to get the desired different SLLs.

Keywords

antenna arrays; genetic algorithms; search problems; GA optimization algorithm; SLL reduction; genetic algorithm; global search algorithm; modulation frequency harmonics; radiation energy; sideband radiation; sidelobe levels; time modulated antenna array; uniformly excited TMAA; Amplitude modulation; Antenna arrays; Antenna radiation patterns; Arrays; Frequency modulation; Genetic algorithms; Harmonic analysis; Genetic Algorithm (GA); MATLAB; Side band radiation (SBR); Side lobe level (SLL); Time modulated Antenna Array (TMAA);

fLanguage

English

Publisher

ieee

Conference_Titel

Antenna Week (IAW), 2011 Indian

Conference_Location

Kolkata

Print_ISBN

978-1-4577-1456-6

Type

conf

DOI

10.1109/IndianAW.2011.6264914

Filename

6264914