Abstract
A new balanced to balanced (BTB) filtering power divider (FPD) based on right triangle substrate integrated waveguide (SIW) cavity is proposed in this article. TE120-mode is used in four SIW right triangle cavities to realize required differential-mode (DM) transmission and common-mode (CM) suppression. Grounded resistors are loaded between DM output ports to obtain port-to-port isolation. The transmission zero out of the passband is generated by suppressing the TE210 mode. A prototype BTB FPD operating at 14.91 GHz is designed, fabricated, and measured for verification. Good accordance between simulation and measurement can be observed.
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