Characteristics of sideband radiation of uniformly excited time modulated antenna arrays (TMAA) through uniform variation of ‘switch-on’ time

Author

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

Author_Institution

Dept. of ECE, NIT Durgapur, Durgapur, India

fYear

2011

fDate

16-18 Dec. 2011

Firstpage

1

Lastpage

3

Abstract

In addition to fundamental frequency, Time Modulated Antenna Array (TMAA) also radiates at different harmonics (sideband) of modulation frequency Generally radiation at first few harmonics contain significant amount of power. In this paper, the maximum radiations at first three sidebands of uniformly excited TMAA are characterized by uniformly changing switch-on time of each element. The normalized switch-on time of all the elements of the array are varied from 0 to 1 and its effect on sideband radiation are analyzed. Also one important characteristics of sideband radiation of TMAA through uniform variation of `switch-on´ time is point out.

Keywords

antenna arrays; TMAA; modulation frequency; sideband radiation; switch-on time; uniform excited time modulated antenna array; Amplitude modulation; Antenna arrays; Frequency modulation; Harmonic analysis; Switches; MATLAB; Side band radiation (SBR); Side lobe level (SLL); Time Modulated Antenna Array (TMAA);

fLanguage

English

Publisher

ieee

Conference_Titel

India Conference (INDICON), 2011 Annual IEEE

Conference_Location

Hyderabad

Print_ISBN

978-1-4577-1110-7

Type

conf

DOI

10.1109/INDCON.2011.6139495

Filename

6139495