رادار

رادار

طراحی و ساخت یک آنتن دوقطبی متناوب لگاریتمی چاپی دوبانده در 4/2 و 8/5 گیگاهرتز

نوع مقاله : مقاله پژوهشی

نویسندگان
1 کارشناسی ارشد،دانشگاه علم و صنعت ایران،تهران،ایران
2 دانشجوی دکتری، دانشکدگان فنی دانشگاه تهران، تهران، ایران
چکیده
استفاده از پرنده‌های بدون سرنشین در بسیاری از حوزه‌ها رشد بسزایی داشته است. علاوه بر کاربردهای فراوان آن‌ها، این پرنده‌ها می‌توانند مشکلات امنیتی دیگری ایجاد نمایند؛ ازاین‌رو لازم است تا سامانه‌هایی برای تقابل با خطرات احتمالی این پرنده‌ها توسعه یابد. در این مقاله یک آنتن با پهنای باند بالا به‌منظور اختلال در لینک‌های رادیویی پرنده‌های بدون سرنشین تجاری طراحی شده است. به این منظور یک آنتن دوقطبی متناوب لگاریتمی چاپی برای کارکردن در باند 4/2 و 8/5 گیگاهرتز طراحی شده است و قابلیت کار در توان 10 وات را دارد. طراحی آنتن به کمک نرم‌افزار تجاری CST STUDIO 2024 انجام شده است و علاوه بر طراحی و بهینه‌سازی آنتن، یک قاب مخصوص (ریدوم) نیز با طراحی دمایی کامل برای آن طراحی و تعبیه شده است. شبیه‌سازی آنتن با مجموعه ریدوم در باند 4/2 گیگاهرتز بیش از 5/6 دسی‌بل و در 8/5 گیگاهرتز بیش از 5/4 دسی‌بل بهره دارد. آنتن ساخته شده بدون ریدوم نیز بهره حدود 5 و 2/4 دسی‌بل به ترتیب در فرکانس‌های 4/2 و 8/5 گیگاهرتز از خود نشان داده است.
کلیدواژه‌ها

عنوان مقاله English

Design and Fabrication of a Dual-Band Printed Log-Periodic Dipole Array Antenna for 2.4 and 5.8 GHz

نویسندگان English

Mohammad Khazai 1
Jamal Kazazi 2
1 Master's degree, Iran University of Science and Technology, Tehran, Iran
2 PhD Student, Faculty of Engineering, University of Tehran, Tehran, Iran
چکیده English

The utilization of Unmanned Aerial Vehicles (UAVs) has seen substantial growth across numerous domains. Despite their wide range of applications, these drones can pose significant security threats, necessitating the development of systems to counter their potential risks. This paper presents the design of a wideband antenna intended for jamming the radio links of commercial UAVs. To this end, a printed Log-Periodic Dipole Array (LPDA) antenna, operating in the 2.4 and 5.8 GHz bands and capable of handling a power of 10 watts, has been designed. The antenna design and optimization were conducted using the commercial software CST STUDIO 2024. In addition to the antenna itself, a custom radome was also designed and integrated, featuring a comprehensive thermal design. Simulations of the antenna with the radome assembly indicate a gain of over 6.5 dBi at 2.4 GHz and over 4.5 dBi at 5.8 GHz. Measurements of the fabricated antenna without the radome demonstrated gains of approximately 5 dBi and 4.2 dBi at 2.4 GHz and 5.8 GHz, respectively

کلیدواژه‌ها English

Drone Jammer
Printed Log-Periodic Dipole Antenna
Radome
Unmanned Aerial Vehicle (UAV)
Wideband antenna
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