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.

中文翻译：

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基于直角基片集成波导腔的平衡到平衡滤波功分器设计

本文提出了一种基于直角三角形衬底集成波导（SIW）腔的新型平衡到平衡（BTB）滤波功率分配器（FPD）。TE ₁₂₀模式用于四个 SIW 直角三角形腔，以实现所需的差模 (DM) 传输和共模 (CM) 抑制。DM 输出端口之间加载接地电阻以获得端口到端口的隔离。通带外的传输零是通过抑制 TE ₂₁₀模式产生的。在 14.91 GHz 运行的原型 BTB FPD 被设计、制造和测量以进行验证。可以观察到模拟和测量之间的良好一致性。