0% Complete
صفحه اصلی
/
سی و یکمین کنفرانس بین المللی مهندسی برق
Broadband Two Layers 1-Bit Metal-Only Transmitarray with Polarization Conversion Technique
نویسندگان :
Majid Karimipour
1
Iman Aryanian
2
1- دانشگاه صنعتی اراک
2- پژوهشگاه ارتباطات و فناوری اطلاعات
کلمات کلیدی :
Broadband،Transmitarray،Polarization Conversion
چکیده :
A novel broadband two layers 1-bit metal-only transmitarray based on multi-frequency phase distribution synthesis is introduced in this paper. The proposed element for the antenna is composed of two identical double C-shaped slots etched on two metallic top and bottom plates with 90° differences between their orientations to guarantee the polarization conversion for the transmitted wave. The phase state of the transmitted wave is simply varied by 180° by only rotating the bottom metallic layer equal to 180°. Four posts are placed between the two metallic screens to not only further improve the frequency bandwidth behavior of the element but also enhance the robustness of the structure mechanically. The simulation results showed that the x-polarized transmitted wave has an amplitude larger than 0.9 from 12.5 GHz to 17.3 GHz when the y-polarized wave is illuminated to the structure. To achieve a flat gain response within the band, the optimum phase distribution of the array is obtained using a multi-frequency synthesis method based on reference phase optimization for different frequencies. To this end, the variance of the gain level of the antenna is considered as the cost function in the optimization algorithm. A 17.5 cm× 17.5 cm (25×25 element) transmitarray is designed and simulated and the results showed that the pattern has a flat gain response and the 1-dB gain bandwidth is 13.5 GHz-18 GHz (28.57%).
لیست مقالات
لیست مقالات بایگانی شده
Family of Multifunctional Controllable Converters for Grid, Battery, and PV-Powered EV Charging Station Applications
Homayon Soltani Gohari - Amir Safaeinasab - Karim Abbaszadeh
Insulation System Optimization in Dry-Type Transformer Using Finite Element Method
Shohreh Saberi - Mehdi Bigdeli - Davood Azizian
40Hz Auditory Entrainment Promotes Synchronization Between Frontal and Parietal Regions of the Brain
Mojtaba Lahijanian - Hamid Aghajan
Innovative Pathway Optimization for Autonomous Drones in Urban Landscapes Using Integrated Techniques
Seyed Ahmad Abtahi - M.A. Amiri Atashgah - Bahram Tarvirdizadeh - Mohammad Habashiniak
طراحی تنظیمکنندهی خروجی بهینهی مبتنی بر یادگیری تقویتی ایمن با استفاده از تابع مانع کنترلی نمایی
سیدرضا اصغری - سعید شمقدری
Chaos-Based Physical Layer Security in NOMA Systems
Alireza Mard shoorijeh - Mahmoud Ahmadian Attari
Positioning a Moving Target Using Range and Doppler-Rate Measurements with Bi-static Radar
MohammadAmin Latifi - Fereidoon Behnia
BLSTM-Convolutional Neural Networks for Respiratory Disease Diagnosis
Mohammad Hassan Khamechian - Mohammad Reza Akbarzadeh Tootoonchi
کنترل وضعیت ماهواره با کنترل پیشبین اقتصادی مقاوم مبتنی بر تیوب با محاسبات کاهش یافته
مهیار مدنی اصفهانی - عارف آقاملائی - طالب عبدالهی - سعید شمقدری
A Linear Position Sensor Proposal by Development of a Variable Reluctance Linear Resolver
Arman Ramezannezhad - Peyman Naderi - Lieven Vandevelde
ثمین همایش، سامانه مدیریت کنفرانس ها و جشنواره ها - نگارش 40.4.2