طراحی و ساخت آنتن تک قطبی فراپهن باند با سه باند قطع کنترل‌پذیر

نوع مقاله : مقاله پژوهشی

نویسندگان

1 فارغ التحصیل ارشد دانشگاه آزاد یادگار امام(ره)

2 آزاد یادگار امام (ره)

چکیده

در این مقاله یک آنتن فراپهن باند تک قطبی با باندهای قطع کنترل­پذیر و ساختار ساده ارائه شده است. آنتن ارائه ­شده از نوع آنتن پچ بیضوی با تغذیه خط مایکرواستریپ می­باشد. برای ایجاد باندهای قطع، از شکاف­هایی بر روی سطح پچ استفاده شده است که هر یک از این شکاف­ها به منظور ایجاد باند قطع در باندهای WLAN (GHz 4/2- 48/2 ، GHz15/5- 35/5) و WiMAX (GHz 3/3-6/3) مورد استفاده قرار می­­‌‌‌گیرد. با تغییر وضعیت هر یک از شکاف‌ها تعبیه شده بر روی آنتن توسط سوئیچ‌های فرکانس بالا، باندهای قطع به صورت مستقل می‌توانند کنترل گردند. نتایج شبیه سازی و اندازه‌گیری تطبیق امپدانسی مناسب در طول بازه فرکانسیGHz  11-2/2 جهت کاربرد درسامانه های فراپهن باند و ایجاد باندهای قطع فرکانسی مستقل از یکدیگر را نشان می‌دهد. ابعاد آنتن پیشنهادی  mm40 ×30×6/1 و  زیرلایه آنتن از جنس FR4 می‌باشد. در این مقاله، آنتن پیشنهادی با آنتن‌های UWB مقالات پیشین مقایسه شده است. مزایای ساختار پیشنهادی ابعاد کوچک و کنترل باندهای قطع به‌طور مستقل و محدوده فرکانسی وسیع تر می باشد.

کلیدواژه‌ها


عنوان مقاله [English]

Design and Construction of Frequency Reconfigurable Micro-Strip UWB Antenna with Triple Controllable Notched Bands

چکیده [English]

In this article a simple and compact frequency reconfigurable microstrip UWB Antenna with triple band notched is presented. The proposed antenna consists of an elliptic patch, and a micro-strip feed line. Three slots are used on the surface of patch to achieve notched bands. Each one of these slots is used in order to achieve notched band in WLAN (2.4-2.48GHz, 5.15-5.35GHz) and WiMAX (3.3-3.6GHz) bands. By changing the status of each slots Embedded on antenna by the high-frequency switches, notch bands can be controlled independently. The results of simulations and measurements show a proper impedance matching in the frequency range 2.2-11 GHz and achieving independent frequency notched bands. So, the antenna is capable of operating in one of the multiple modes which makes it an excellent candidate for UWB applications.

کلیدواژه‌ها [English]

  • Frequency Reconfigurable Antenna
  • Ultra-Wide Band Antenna
  • Controllable Notched Band
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