Tarbiat Modares University The Modares Journal of Electrical Engineering 2228-527X 14 2 2014 08 01 Filtering Power Divider/Combiner Using Substrate Integrated Waveguide (SIW)-Based 180‌o Hybrid تقسیم‌کننده/ترکیب‌کننده‌ی توان فیلتری بر اساس موج‌بر مجتمع شده در زیرلایه و هایبرید 180 درجه 18 24 12967 EN Alireza Moznebi M.Sc. Student, Department of Electrical Engineering, Shahid Bahonar University of Kerman, Kerman, Iran Kambiz Afrooz Assistant Professor, Department of Electrical Engineering, Shahid Bahonar University of Kerman, Kerman, Iran. Journal Article <strong>This paper presents a filtering power divider (PD)/power combiner (PC) using substrate integrated waveguide (SIW)-based 180^o hybrid. The utilized 180^o hybrid includes a standard H-plane 3-dB coupler and a broadband 90^o phase shifter. The phase shifter is composed of non-radiating longitudinal slots patterned on the top conducting surface of the SIW. We have added the filtering property to the structure by an array of dissimilar transverse slots. The slots dimensions are obtained by the extracted external quality factor, coupling coefficient and the relationship between them and the slots dimensions. The proposed structure is designed for 8.2 GHz and investigated by ADS simulator. The results show the fractional bandwidth of the sum and difference ports are 13.7% and 14.93%, respectively. For sum operation,</strong> <strong>the minimum insertion loss is 3.78 dB and the return loss is above 25 dB in the passband. For difference operation,</strong> <strong>the minimum insertion loss is 3.81 dB and the return loss is above 26 dB in the passband</strong> <strong> </strong> https://mjee.modares.ac.ir/article_12967_5e2474f1e2b6e1e2a6985974062b664c.pdf