Filtering Power Divider/Combiner Using Substrate Integrated Waveguide (SIW)-Based ۱۸۰ o Hybrid

This paper presents a filtering power divider (PD)/power combiner (PC) using substrate integrated waveguide (SIW)-based ۱۸۰o hybrid. The utilized ۱۸۰o hybrid includes a standard H-plane ۳-dB coupler and a broadband ۹۰o 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 ۸.۲ GHz and investigated by ADS simulator. The results show the fractional bandwidth of the sum and difference ports are ۱۳.۷% and ۱۴.۹۳%, respectively. For sum operation, the minimum insertion loss is ۳.۷۸ dB and the return loss is above ۲۵ dB in the passband. For difference operation, the minimum insertion loss is ۳.۸۱ dB and the return loss is above ۲۶ dB in the passband

کلیدواژه ها:

۱۸۰o hybrid ، phase shifter ، power combiner ، power divider ، substrate integrated waveguide (SIW) ، کلید واژگان: هایبرید ۱۸۰ درجه ، شیفت دهنده ی فاز ، ترکیب کننده ، تقسیم کننده ، موج بر مجتمع شده در زیرلایه (SIW)