Title :
Synthesis of flat top beam pattern through time modulation of linear array
Author :
Mandal, Sajal Kumar ; Mahanti, G.K. ; Rowdra, G.
Author_Institution :
Dept. of Electron. & Commun. Eng., Nat. Inst. of Technol. Durgapur, Durgapur, India
Abstract :
In this paper, a flat-top beam pattern is generated through time modulation of linear array. Three parameters; side lobe level (SLL), ripple (R) and transition width (T) related are obtained as -30.2dB, 0.1dB and 6.4° respectively. To simplify the complexity of the feeding network, only two states of static phase shift (0, π) is considered. The maximum side band radiation level of the first two sidebands are also reduced to less than -33.4dB and -34.4dB respectively. Artificial Bee colony algorithm is used as the searching and optimizing algorithm for getting the desired results.
Keywords :
antenna feeds; antenna radiation patterns; linear antenna arrays; modulation; optimisation; SLL; artificial bee colony algorithm; feeding network; flat top beam pattern synthesis; gain -30.2 dB; gain 0.1 dB; linear antenna array; maximum side band radiation level; optimization algorithm; side lobe level; static phase shift; time modulation; transition width; Antenna radiation patterns; Arrays; Chirp modulation; Cost function; Frequency modulation; Time frequency analysis; Artificial Bee Colony (ABC); Side band radiation (SBR); Side lobe level (SLL); Time Modulated Linear Array (TMLA);
Conference_Titel :
Signal Processing, Communication and Computing (ICSPCC), 2012 IEEE International Conference on
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4673-2192-1
DOI :
10.1109/ICSPCC.2012.6335645
