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
Miniaturized Planar Crossover Using Microstrip Stub Loaded Coupled Lines
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Compact size, coupled lines, crossover, isolation, microstrip, phase analysis
پژوهشگران عباس رضایی (نفر اول)، لیلا نوری (نفر دوم)

چکیده

A novel symmetrical planar crossover is presented in this paper. The proposed resonator consists of coupled lines loaded by U-shape stubs, which two similar of them are integrated to create two passband paths at 2.09 GHz for wireless communication systems. To analyze the proposed structure a LC equivalent circuit is proposed for the coupled lines then the resonance condition is obtained. The isolation between two channels is well improved so that S21, S41 and S32 are −29.9, −26.59 and −26.4 dB at 2.09 GHz. Meanwhile, 0.57 dB insertion loss and a compact size of 0.202λg×0.208λg (21.6×22.2 mm2) are obtained where λg is the guided wavelength calculated at the resonance frequency. Also, a phase analysis is done that shows exactly 0° phase shift between two paths (S31 and S42) at the resonance frequency. To verify the introduced methodology, the designed crossover is fabricated and measured. There is a good agreement between the simulated and measured results.