05 خرداد 1403
عباس رضايي

عباس رضایی

مرتبه علمی: استادیار
نشانی: دانشگاه صنعتی کرمانشاه، دانشکده مهندسی برق، مهندسی برق (گرایش های الکترونیک و مخابرات)
تحصیلات: دکترای تخصصی / مهندسی برق
تلفن: 083-38305001
دانشکده: دانشکده مهندسی برق

مشخصات پژوهش

عنوان
A high‐performance microstrip bandpass filtering coupler with low‐loss and compact size
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
bandpass filtering, compact, coupler, microstrip, ultra‐wideband
پژوهشگران عباس رضایی (نفر اول)، صلاح اسماعیل یحیی (نفر دوم)، لیلا نوری (نفر سوم)

چکیده

In this letter, novel spiral-coupled transmission lines are used to obtain a high-performance microstrip coupler. The advantages of the proposed microstrip coupler are novel structure, filtering frequency response, suppressed harmonics up to second harmonics, transmission poles, low losses, compact size, and good phase balance. The proposed structure is novel and different from the previous coupler designs such as rate-races, rings, and branch-lines types. It is presented for the first time in this work with a very small size and good performance. The size of this coupler is only 82.6 mm2 (0.004 λg2). The common port return loss is 33 dB and the insertion losses at port 2 and port 3 are 2.2 and 2.7 dB, respectively. To prove the accuracy of the design method and simulation results, the proposed coupler is fabricated and measured where the measurement results confirm the simulation results and the proposed design method.