طراحی و ساخت یک تزویج کننده مایکرواستریپی فشرده با حذف هارمونیکهای ناخواسته به کمک تشدیدکنندههای T شکل و امپدانس پلهای
محورهای موضوعی : مهندسی برق و کامپیوترسبحان روشنی 1 , سمیه کریمی 2 , سعید روشنی 3 *
1 - دانشگاه آزاد اسلامی واحد کرمانشاه
2 - دانشگاه آزاد اسلامی واحد کرمانشاه
3 - دانشگاه آزاد اسلامی واحد کرمانشاه
کلید واژه: تزویجکننده, تشدیدکننده T شکل, تشدیدکننده امپدانس پلهای و حذف هارمونیک,
چکیده مقاله :
در این مقاله با استفاده از تشدیدکنندههای T شکل و امپدانس پلهای، یک تزویجکننده میکرواستریپی جدید با فرکانس کاری یک گیگاهرتز ارائه شده است. تزویجکننده پیشنهادی نسبت به تزویجکنندههای پیشین از اندازه کوچکتری برخوردار بوده و عملکرد مطلوبی از خود نشان میدهد. تزویجکننده طراحیشده در مقایسه با تزویجکننده شاخهای متداول دارای 65% کاهش سایز میباشد و همچنین هارمونیکهای دوم تا هفتم را نیز حذف میکند. تزویجکننده طراحیشده بر روی زیرلایه 5880 RT/duroid با ثابت دیالکتریک 2/2، ضخامت mil 31 و تانژانت تلفات 0009/0 ساخته شده است. نتایج اندازهگیری و شبیهسازی تطبیق خوبی دارند که نشان از صحت طراحی قطعه دارد.
In this paper a novel compact microstrip coupler using T-shaped and stepped impedance resonators is proposed, simulated and fabricated. In the proposed structure long quadrature wavelength lines are replaced with small resonators, which results in size reduction and harmonics suppression. The proposed coupler correctly works at 1 GHz and suppresses 2nd up to 7th unwanted harmonics. Moreover the designed coupler reduces the circuit size more than 65% compared to the conventional coupler.
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