نوع مقاله : مقالة‌ تحقیقی‌ (پژوهشی‌)

نویسندگان

1 دانشکده مهندسی برق ، دانشگاه آزاد اسلامی ، واحد بجنورد، بجنورد، ایران

2 استادیار، دانشکده مهندسی برق ، دانشگاه آزاد اسلامی ، واحد بجنورد، بجنورد، ایران

چکیده

: در این مقاله نوع جدیدی از ساختارهای EBG موسوم به سطوح انتخابی فرکانس (FSS) با قابلیت پیکربندی مجدد بررسی شده‌است. طرح‌ پیشنهادی، یک فیلتر میان نگذر جدید با هدف کنترل فرکانس مرکزی با قابلیت پیکربندی مجدد مجهز به دیودهای پین(PIN)برای ساختار FSS را در باند فرکانسی C و دربازه فرکانسی 4GHz الی 8GHz با کاربرد فضایی معرفی می‌کند که در فرکانس مرکزی 4.75GHz، پهنای باند حدود 1GHz را در وضعیت روشن بودن دیود ارائه می دهد. فرکانس مرکزی این فیلتر در وضعیت خاموش بودن دیود به فرکانس 5.23GHz جابجا می‌شود. در واقع این ساختار قرار است به عنوان نوعی پوشش الکترومغناطیسی برای محموله فضایی در ماهواره های نسل آینده استفاده شود. پس از طراحی و شبیه‌سازی سلول حاصل، یک مدل مداری نیز برای تایید طراحی و شبیه‌سازی ارائه شده است. از کاربردهای مهم این ساختارها، استفاده از آن‌ها در محافظت ماژول های الکترونیکی، محموله ماهواره‌ها در برابر تشعشعات الکترومغناطیسی، جنگ الکترونیک و کاهش سطح مقطع راداری(RCS) است.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Design, Simulation, Fabrication and Determining the Equivalent Circuit Model of a Reconfigurable FSS unit Cell Filter for Electromagnetic Protection of Space Payload Systems

نویسندگان [English]

  • Hamed Babaei 1
  • Seyyed Amir Gohari 2
  • Peiman Mohamadi 2

1 Department of Electrical Engineering, Bojnourd Branch, Islamic Azad University, Bojnourdm Iran

2 Assistant Professor, Department of Electrical Engineering, Bojnourd Branch, Islamic Azad University, Bojnourd, Bojnourd, Iran

چکیده [English]

In this article, a new type of EBG structure known as frequency selective surface (FSS) with reconfigurable capability is investigated. The proposed design introduces a new adjustable band stop filter equipped with PIN diodes. Operating frequency of the FSS structure is in the C-band and in the frequency range of 4GHz to 8GHz, which at the central frequency of 4.75GHz, provides a bandwidth of about 1 GHz, when the state of the diode being on. The center frequency of this filter is shifted to 5.23 GHz when the diode is off. In fact, this structure is supposed to be used as a type of electromagnetic coating filter for space payload in the next generation satellites. After the design and simulation of the final cell, an equivalent circuit model is also presented to confirm the design and simulation. These structures protect electronic modules of satellite payload against electromagnetic radiation, electronic warfare. The RCS reduction is the other application of the FSS structure.

کلیدواژه‌ها [English]

  • Space payload
  • Frequency Selective Surface (FSS)
  • Electromagnetic Band-Gap (EBG)
  • Radar Cross Section (RCS)
  • RFSS Low Pass Filter
  • PIN diode
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