This article presents a miniaturized Wilkinson power divider (WPD) for dual‐band applications using a novel planar transmission line. The new planar line fully uses the substrate area and aims to take place of the quarter‐wave transformers of the traditional WPD. Namely, the copper foil on the both sides of the substrate were used to composite microstrip line (ML) and a coplanar waveguide (CPW) line. The transitions of the ML and CPW were achieved by a copper via. The WPD has realized a miniaturization at 0.9 and 2.9 GHz with a small footprint of 12.92 × 6.8 mm².The simulated results are verified by measured results to show that the isolations within the dual band are both less than −20 dB, the reflection coefficients are both less than −10 dB, whereas the insertion loss are both less than 3.10 dB in 0.8 to 1.0 GHz and 2.8 to 3.0 GHz bands.

中文翻译：

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使用新型平面传输线的微型双频威尔金森功率分配器

本文介绍了一种使用新型平面传输线的双频应用的小型威尔金森功率分配器（WPD）。新的平面线充分利用了基板面积，旨在取代传统WPD的四分之一波长变压器。即，将基板两侧的铜箔用于复合微带线（ML）和共面波导（CPW）线。ML和CPW的过渡是通过铜过孔实现的。WPD已经实现了0.9和2.9 GHz的小型化，占地面积仅为12.92×6.8 mm ²通过测量结果验证了仿真结果，结果表明，在0.8至1.5 dB的频率范围内，双频带内的隔离度均小于-20 dB，反射系数均小于-10 dB，而插入损耗均小于3.10 dB。 1.0 GHz和2.8至3.0 GHz频段。