ABSTRACT In this paper, a dual-band Wilkinson power divider is proposed and implemented using lattice network-based (or X-type) composite right/left-handed transmission lines (CRLH-TLs) with the coplanar waveguide (CPW). By loading interdigital capacitors, meandered lines, defected ground structures on the CPW transmission line, the X-type CRLH-TL with broad operating bands is designed. The dual-band Wilkinson power divider centered at 0.9 GHz and 3.5 GHz is achieved thanks to the X-type CRLH-TL feature of providing −90° and +90° phase shift at two designated frequencies respectively. The size of the divider is 31.4 mm×28.7 mm, which is only 36.6% area of a conventional case. Finally, the power divider is fabricated and measured to demonstrate the validity of the presented design approach. Good agreements between the simulated and measured results can be observed with a full port matching and an excellent isolation performance.

中文翻译：

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基于格子网络复合左右手传输线的双频威尔金森功率分配器

摘要 在本文中，提出并使用基于晶格网络（或 X 型）的复合右/左手传输线 (CRLH-TL) 和共面波导 (CPW) 实现了双频威尔金森功率分配器。通过在CPW传输线上加载叉指电容器、曲折线、缺陷接地结构，设计了具有宽工作频段的X型CRLH-TL。由于 X 型 CRLH-TL 特性分别在两个指定频率提供 -90° 和 +90° 相移，实现了以 0.9 GHz 和 3.5 GHz 为中心的双频威尔金森功率分配器。隔板尺寸为31.4mm×28.7mm，仅为传统机箱面积的36.6%。最后，制造和测量功率分配器以证明所提出的设计方法的有效性。