基于人工传输线的小型微带Wilkinson功分器

提出了一种基于人工传输线的小型微带Wilkinson功分器,该器件使用由LC元件构成的人工传输线取代传统传输线,并使用交指电容和贴片电阻进行端口隔离。设计制作的Wilkinson功分器中心频率为915MHz的微带3dB功分器,等幅同相地将输入功率分配到2个输出端口,尺寸仅有传统Wilkinson功分器的25%,端口幅度平衡度±0.2dB,相位平衡度±1°。实验结果表明:功分器带宽为0.49～1.20GHz,插入损耗小于3.2dB,回波损耗大于10dB,仿真结果和测量结果吻合较好。

Design of miniaturized microstrip Wilkinson power divider based on artificial transmission lines

In this paper, a novel microstrip Wilkinson power divider based on artificial transmission lines is proposed. The design consists of recently proposed artificial transmission lines using L-C components instead of conventional microstrip transmission lines. Two interdigital capacitors and a chip resistor were applied to improve output port isolation. A power divider at 915 MHz was designed and fabricated. Compared with conventional Wilkinson power dividers, it features a size reduction of 75%. The bandwidth ...