电子元件与材料2024，Vol.43Issue(5)：591-596,6.DOI:10.14106/j.cnki.1001-2028.2024.1540
基于阶梯阻抗谐振器的双频宽带滤波功分器
Dual-frequency and wideband filtering power divider based on stepped impedance resonator
摘要
Abstract
To better meet the requirements of wireless communication system for multi-functional and multi-band RF front-end devices,a dual-band wideband filtering power divider was proposed based on stepped impedance resonator.Firstly,a single T-shaped resonator was proposed to achieve the dual-band filter unit,and a controllable high order mode was introduced by the stepped impedance technique to widen the high frequency passband bandwidth of the dual-band power divider.Secondly,the additional resonant mode was introduced by using the branch-loading technique to widen the bandwidth of each passband of the dual-band filtering power divider.For miniaturization design,some microstrip lines were bent to make the entire circuit structure more compact.In addition,four individually controllable transmission zeros were generated out-of-band by utilizing the filtering characteristics of the T-shaped resonator itself and loading open-circuit branches on the microstrip feed line,which improved the out-of-passband selectivity.By loading the fan-shaped branches on the microstrip feeder and introducing the isolation resistor at the output port,the impedance matching effect and the isolation degree in the filtering power divider were effectively improved.For further verification,the proposed filtering power divider was manufactured and measured.The central frequency of the filtering power divider is 2.83/4.87 GHz,and the relative bandwidth is 10.6％and 11.7％,respectively,and the passband isolation is greater than 14.5 dB.The measured and simulation results are basically consistent.关键词
双频/宽带/阶梯阻抗技术/T型谐振器/滤波/功分器Key words
dual-band/wideband/stepped impedance technique/T-shaped resonator/filter/power divider分类
信息技术与安全科学引用本文复制引用
王传云,樊启磊,夏婷婷,江晓锋,胡伟康..基于阶梯阻抗谐振器的双频宽带滤波功分器[J].电子元件与材料,2024,43(5):591-596,6.基金项目
国家自然科学基金(62261022) （62261022）
国家自然科学基金(62361025) （62361025）
江西省教育厅科学技术研究重点项目(GJJ2200609) （GJJ2200609）
