Unlike conventional decoupling technologies that merely concern antenna characteristics in a limited range of frequency, this paper proposes a novel hybrid wideband structure to decouple ultra-wideband (UWB) quasi-Yagi antenna array. With the demand of achieving trade-off between mutual coupling and gain in the entire operating band, the evolution of the configuration is meticulously conducted by introducing multiple slots and their complementary counterpart, a rake-type locker, and an I-shaped isolator. Simulation and measurement results indicate that the decoupled array owns an increased impedance bandwidth (92.1%), reduced mutual coupling (lower than −20 dB), comparable gain and modified radiation patterns. The hybrid wideband decoupling structure reveals its potential application in planar wideband and multielement antenna arrays.

与仅在有限的频率范围内仅关注天线特性的常规去耦技术不同，本文提出了一种新颖的混合宽带结构来对超宽带（UWB）准八木天线阵列进行解耦。由于需要在整个工作频带中实现互耦和增益之间的权衡，因此通过引入多个插槽及其互补的对应部分，耙形锁扣和I形隔离器来精心进行配置的演变。仿真和测量结果表明，解耦后的阵列具有增加的阻抗带宽（92.1％），互感减小（低于-20dB），可比的增益和改进的辐射方向图。混合宽带去耦结构揭示了其在平面宽带和多元素天线阵列中的潜在应用。