تعیین محل تغذیه و شکل دهی الگوی میدان در آنتن هم موقعیت MIMO با استفاده از تئوری مود مشخصه
الموضوعات :مصطفی پروین 1 , جواد احمدی شکوه 2 , حمیده دشتی خویدکی 3
1 - مهندسی برق و کامپیوتر
2 - دانشگاه سیستان و بلوچستان
3 - دانشگاه سیستان و بلوچستان
الکلمات المفتاحية: تعیین محل تغذیهمودهای مشخصهدامنه تحریکالگوی میدان دور,
ملخص المقالة :
در این مقاله روشی برای تعیین محل تغذیه در یک آنتن هم‌موقعیت چندورودی- چندخروجی (MIMO) بر مبنای تئوری مود مشخصه ارائه می‌شود. از خاصیت تعامد جریان‌های مشخصه برای تعیین محل‌های بهینه تغذیه در آنتن مورد نظر استفاده می‌شود. ابتدا تحلیل مود مشخصه برای تعیین مودهای رزونانسی متعامد آنتن، انجام و سپس محل‌های بهینه تغذیه برای تحریک این مودها، تعیین می‌شود. همچنین با تغییر دامنه تحریک این مودها، شکل الگوی میدان دور آنتن را تغییر می‌دهیم. مشاهده می‌شود که تنها با تغییر دامنه تحریک مودهای متعامد آنتن و ترکیب آنها در فرکانس مورد نظر، شکل و پهنای پرتوی آنتن تغییر می‌کند.
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