Dual‐band filtering power divider with independent in‐band power split ratio using a single quad‐mode dielectric resonator

Wei Yu, Lin Xu, Wei Qin, Longlong Lin, Binbin Xu, Jian‐Xin Chen
2021 IET Microwaves, Antennas & Propagation  
A design approach is presented based on insights into power division among modes for a dual-band filtering power divider using a single multimode resonator. The relationship between the energy of the input port under different modes and the corresponding external quality factor (Q e ) is analysed. Then, the power distribution among the in-band modes and between output ports can be all expressed by Q e . Therefore, the synthesis of a coupling matrix to achieve independent power distribution in
more » ... e two bands is simplified. For further verification, a quad-mode dielectric resonator with independently controllable modes is designed. Based on this, dual-band filtering power dividers with equal and unequal power split ratios (1:1 in the lower band and 2:1 in the higher band) are simulated and implemented. The simulation and measurement agree, proving the correctness of the approach. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
doi:10.1049/mia2.12157 fatcat:jbmfpep7mbg4he6dbewx75c26u