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 novel microstrip diplexer with compact size and high isolation for GSM applications
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Diplexer; Compact size; GSM; Insertion loss; Microstrip; Resonator.
پژوهشگران عباس رضایی (نفر اول)، صلاح اسماعیل یحیی (نفر دوم)، مهد هیزل جمالدین (نفر سوم)

چکیده

A novel high-performance microstrip diplexer is proposed and designed in this work. The design is based on patch and thin cells to operate at 0.78 GHz and 1.85 GHz for GSM applications. Owing to the symmetrical structure of the proposed resonator, the odd and even modes analyses are performed to get information about the resonator behavior. This information is useful to optimize the performance and miniaturization, simultaneously. The introduced diplexer has several advantages in terms of low insertion losses, low return losses, high isolation and compact size. It is well miniaturized and optimized with low insertion losses of better than 0.30 dB at the both channels. Meanwhile, the isolation between the channels is better than 42 dB. Our designed diplexer is able to attenuate 1st up to 5th harmonics. To validate the simulation results, we have fabricated the presented diplexer. The results show a good agreement between the measurement and simulation results.