W-Band Longitudinal-Slot Coupling Four-Way SIW Power Combiner/Divider

摘要

A novel W-band four-way substrate integrated waveguide (SIW) power combiner/divider is analyzed and demonstrated. By combining a compact wideband antipodal fin-line transition configuration and the four-way longitudinal-slot SIW coupling structure, a novel back-to-back power dividing/combining system is achieved, which can operate in the frequency band of 90.5-94.5 GHz with return loss of better than 12 dB and total insertion loss of less than 3.8 dB. Such power combiner/divider has advantages of high port-isolation, low insertion loss, high efficiency, wide band, and small lateral size, which is suitable for the spatial power amplifier applications.