ساختار تار عنکبوتی به‌عنوان سطوح امپدانس بالا

نویسندگان

دانشگاه سمنان

چکیده

دراین مقاله با توجه به اهمیت ساختار سطوح امپدانس بالا (HIS) به عنوان هادی مغناطیسی مصنوعی (AMC)، ساختارهای جدیدی به عنوان سلول واحد با الهام از طبیعت و تارهای عنکبوت ارائه‏ شده است. برای مقایسه عملکرد، ساختار متداول قارچی‌شکل (sievenpiper mushroom) با و بدون خط اتصال به زمین (via) نیز (با ابعاد یکسان) طراحی و نتایج آن با ساختارهای پیشنهادی، مقایسه ‏شده‌ است. در ابتدا چندین ساختار رشته‏ای با قابلیت جابجایی فرکانس فاز صفر طراحی شده است. اهداف طراحی، کاهش فرکانس فاز صفر با داشتن پهنای‌باند قابل قبول و نیز جابجایی فرکانسی فاز صفر با تغییر ضخامت تارها است. طراحی در محدوده‏ی فرکانسی 2 تا 3 گیگاهرتز و با نرم‌افزار HFSS صورت گرفته است.

کلیدواژه‌ها


عنوان مقاله [English]

Spider web structure as high impedance surfaces

نویسندگان [English]

  • Mohammad Jahandar Lashaki
  • Pejman Rezaei
  • MohammadMehdi Fakharian
چکیده [English]

In this paper, due to the importance of High Impedance Surfaces (HIS) as artificial magnetic conductor (AMC), new structures as unit cells has been introduced from nature and spider webs. For performance comparison, first two known structures of HIS, sievenpiper mushroom without via and with via designed with the same dimensions and the results are compared with the proposed structures. At first a number of string structures with the shift frequency of zero phase ability are designed. Design purposes are to reduce the frequency of zero phases with acceptable bandwidth and also zero phase frequency shift by changing the thickness of the webs. Design in 2 to 3 GHz frequency band and has been done by HFSS software.

کلیدواژه‌ها [English]

  • Artificial Magnetic Conductor (AMC)
  • Frequency shift
  • High Impedance Surfaces (HIS)
  • Spider Web
 

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