طراحی، شبیه‌سازی و ساخت یک تزویج‌کننده مایکرواستریپی فشرده با بهبود عملکرد و حذف هارمونیک‌های ناخواسته
محورهای موضوعی : مهندسی برق و کامپیوترطاهره براتی کاشانتوئی 1 , سعید روشنی 2
1 - دانشگاه آزاد اسلامی واحد کرمانشاه
2 - دانشگاه آزاد اسلامی واحد کرمانشاه
کلید واژه: تزویج‌کننده مایکرواستریپیحذف هارمونیکساختار خماستاب‌های اتصال باز,
چکیده مقاله :
در این مقاله، طرحی نو برای کوچک‌سازی و بهبود پارامترهای پراکندگی تزویج‌کننده شاخه‌ای آمده است. تزویج‌کننده طراحی‌شده قابلیت حذف هارمونیک دوم را با سطح تضعیف dB 55/38 دارا می‌باشد و پاسخ‌های پراکندگی بهبودیافته مدار پیشنهادی برابر dB 67/67- S11=، dB 09/3- S13=، dB 95/2- S12= و dB 78/49- S14= است. در روند طراحی تزویج‌کننده پیشنهادی از ساختار خطوط خم‌شده و استاب‌های اتصال باز استفاده شده است. تزویج‌کننده پیشنهادی تنها 6/54 درصد از فضای تزویج‌کننده مرسوم را اشغال می‌کند که کاهش سایز قابل ملاحظه‌ای را نشان می‌دهد. کوپلر ارائه‌شده برای کار در فرکانس 4/2 گیگاهرتز، بر روی زیرلایه 5880 RT/Duroid با ثابت دی‌الکتریک 2/2 ، ضخامت زیرلایه mil 31 H= و تانژانت تلفات 0009/0 طراحی و ساخته شده است.
In this paper a novel branch line coupler (BLC) with size reduction and performance improvement at 2.4 GHz is proposed. The proposed branch line coupler suppresses the second harmonic with 38.55 dB attenuation level. The scattering parameters of the proposed BLC are given as follows: S11= -67.67 dB, S12= -2.95 dB, S13= -3.09 dB and S14= -49.78 dB. The bended line structures and open-ended stubs are used in design process. The proposed BLC has 45.4% size reduction compare to the conventional one. The proposed device fabricated on RT/Duroid 5880 substrate.
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