ارائه مدل ریاضی بر اساس حساسیت¬های الکتریکی و مغناطیسی برای یک فراسطح منعکس‌کننده ایده‌آل بدون امواج ناخواسته
الموضوعات :
1 - دانشکده مهندسی برق، دانشگاه یزد، یزد، ایران.
2 - دانشکده مهندسی برق، دانشگاه یزد، یزد، ایران.
الکلمات المفتاحية: انعکاس ایده آل, فراسطوح, ساختارهای متناوب, قانون اسنل تعمیم‌یافته, سطوح هوشمند قابل تنظیم (RIS), شرایط انتقال صفحه ای تعمیم‌یافته (GSTCs),
ملخص المقالة :
یکی از مهم‌ترین ویژگی‌های فراسطوح، توانایی آنها در کنترل امواج منعکس شده از آنها می‌باشد. اما فراسطوح منعکس‌کننده بر پایه روش ساده گرادیان فاز با بازده کمی همراه هستند، به طوری که بازتاب‌های ناخواسته‌ای در جهات غیرمطلوب به وجود می‌آید. یک تحقیق نظری نشان می‌دهد که یک فراسطح با قابلیت قطبندگی می‌تواند موج را بدون حضور امواج ناخواسته منعکس نماید. برای تبدیل این نظریه به مدل حقیقی، نیاز به تبدیل فراسطح به مدل ریاضی است. در اینجا، این نظریه برای اولین بار با استفاده از یک روش سنتز که اساساً بر مبنای محیط است، به یک مدل ریاضی تبدیل می‌شود. ما تانسورهای حساسیت الکتریکی و مغناطیسی فراسطح را به صورت معادلات ریاضی فرم بسته بدست می‌آوریم و در نتیجه خواهیم دید که این تانسورها نماینده‌ی مدل ریاضی سطحی با ویژگی‌های بدون تلف، غیرفعال، هم‌پاسخ و تک‌ناهمسانگرد هستند. از آنجایی که این مدل اطلاعات کامل‌تری نسبت به سایر روش‌ها ارائه می‌دهد، تبدیل این مدل ریاضی به یک مدل واقعی به شکلی دقیق‌تر انجام خواهد شد. به منظور اثبات صحت فرمول‌های به دست آمده برای این مدل فراسطح، شبیه‌سازی تمام موج آن با استفاده از نرم‌افزار کامسول انجام شده است.
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