This letter presents two 2 × 2 polarization-insensitive dual-polarized rectenna arrays with different power combining strategies for wireless power transmission applications. With a dual-polarized antenna array, the incident wave can be received and decomposed into the horizontally and vertically polarized components, which are equally redistributed by a hybrid coupler. By this means, the efficiency of the rectenna, in which the power is equally input to the two rectifiers in parallel, is independent of the incident wave's polarization. Based on the equal power routing mechanism, two rectenna arrays using the RF and dc combining strategies are designed and analyzed. Measurement results show that both rectenna arrays are insensitive to the incident wave's polarization, and have their own advantages and disadvantages.

中文翻译：

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具有不同功率组合策略的极化不敏感整流天线阵列

这封信展示了两个 2 × 2 极化不敏感双极化整流天线阵列，它们具有用于无线电力传输应用的不同功率组合策略。使用双极化天线阵列，可以接收入射波并将其分解为水平和垂直极化分量，这些分量通过混合耦合器进行平均重新分配。通过这种方式，整流天线的效率与入射波的极化无关，其中功率相等地输入到两个并联的整流器。基于等功率路由机制，设计并分析了使用射频和直流组合策略的两个整流天线阵列。测量结果表明，两种整流天线阵列对入射波的极化都不敏感，各有优缺点。