Broadband power dividers based on waveguide T-junctions at Ka-band

Abstract

This article presents a novel broadband H-plane rectangular waveguide T-junction structure for unequal power dividers at Ka-band. Inspired by H-plane waveguide bend structure and directional coupler, Tjunctions with high power splitting ratio are invented. Compared with the conventional T-junction structures, their bandwidths are obviously broadened. Two in-phase power dividers at Ka-band with different power division ratios (1:4 and 1:8) are designed and fabricated to verify the practicability of the proposed structure. The measured results agree well with the simulations and the broadband characteristics are obtained. The bandwidth of unequal power divider is 44.06% for the 1:4 power divider and 38.9% for the 1:8 power divider, respectively.

A novel H-plane based T-junction waveguide power divider for WR-10

“…Many studies have investigated the H-plane T-junction waveguide power divider [2,14,15,16,17,18,19,20,21,22]. Different designs have been developed, such as using irises/multiple posts in input and output waveguides [14,15], a partial-height post [16], a junction waveguide with an increased height [17,18,19] and a septum with matching iris [20,21,22,23]. Other studies proposed different types of power divider [24,25,26,27,28,29], using a circularly polarized TE11 mode [30,31], using two symmetric irises and a septum [32] and using substrate integrated waveguide [33].…”

A novel quasi-planar power divider with extra 180° phase difference and full bandwidth

“…Among them, waveguide T-junction (E-plane [1,2,3] or H-plane [4,5,6]) power dividers are often used for their simple and compact structures. In practical application, the performance of the power divider, especially the phase difference between the output ports, affects the entire system.…”

Antenas y componentes de microondas para satélites de dimensiones reducidas utilizando tecnologías vacías integradas en substrato

“…Los dispositivos divisores de potencia implementados en guías de onda convencionales tienden a incorporar elementos de compensación, como postes, iris y estructuras de altura libre, con el propósito de mejorar la adaptación en el puerto de entrada y lograr una distribución equitativa de potencia entre sus puertos de salida [116][117][118]. Lamentablemente, a pesar de la utilización de diversos elementos de compensación, se observa una limitación en el ancho de banda cuando estos dispositivos se implemen-tan en guías de onda rectangulares [119], así como en tecnologías SIW [120][121][122] y ESIW [123].…”