Synthesis of Simultaneous Sum and Difference Patterns in Uniformly Excited Time-Modulated Linear Arrays using Firefly Algorithm

被引：0
|
作者：
Mukherjee, Ananya [1 ]
Mandal, S. K. [1 ]
Mahanti, G. K. [1 ]
Ghatak, Rowdra [1 ]
机构：
[1] Natl Inst Technol, Dept Elect & Commun Engg, Microwave & Antenna Res Lab, Durgapur, W Bengal, India
来源：
2014 IEEE STUDENTS' TECHNOLOGY SYMPOSIUM (IEEE TECHSYM) | 2014年
关键词：
Antenna arrays; time modulation (TM); time-modulated linear array (TMLA); firefly algorithm (FA); side lobe level (SLL); side band level (SBL);
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, sideband radiations which are generally regarded as the undesired effects of time-modulated antenna arrays (TMAAs), are exploited to design multi-beam antenna arrays. Time modulation (TM) is applied into uniformly excited linear array of half wave dipole radiators to generate low side-lobe sum and difference patterns at the center frequency and first sideband respectively while the maximum power level at the higher sidebands are suppressed significantly by optimizing the periodical on-off switching instants of the antenna elements by using fire-fly algorithm (FA). The FA optimized pattern as realized in MATLAB platform is validated by designing the uniformly excited time modulated linear array (UE-TMLA) in CST-MWS with the same on-time sequence as obtained by using FA and the patterns are compared.
引用
收藏
页码：143 / 147
页数：5
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