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Design method of new power divider employing zero-degree transmission line with arbitrary power dividing ratio

机译:采用零级传输线具有任意功率分裂率的新功率分压器的设计方法

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摘要

In this paper, a new structure of power divider (PD) employing zero-degree transmission line (TL) with arbitrary power dividing ratio is firstly proposed. Detailed analysis is performed according to the modified even- and odd-mode analytical method. This procedure shows that the resistor between the two output ports corresponds to the wide isolation band, while the other two grounded resistors can not only realize the two output ports matching, but also provide better power handling capability in comparison with the conventional Wilkinson PD. Specifically, a zero-degree composite right- and left-handed (CRLH) transmission line (TL) is used in the PD structure, which results in a smaller size, higher design flexibility, and wider operating band than the conventional Gysel PD with the reference of 10-dB return loss and 1-dB insertion loss. Closed-form design equations are derived, and the proposed design theory is verified by two PDs with the same centre frequency but different power dividing ratio (P-2/P-1) as 1:1 and 2:1, respectively. According to the experiment results, both PDs have a better out-of-band rejection than the conventional Wilkinson PD, more than 100% fractional operating bandwidth under full port matching, and more than 85% isolation bandwidth with the reference of 15-dB S-32. (C) 2020 Elsevier GmbH. All rights reserved.
机译:在本文中,首先提出了采用具有任意功率分割比的功率分配器(PD)的新结构。根据修改的偶数和奇数模式分析方法进行详细分析。该过程表明,两个输出端口之间的电阻对应于宽隔离带,而另一个两个接地电阻不能仅实现两个输出端口匹配,而且还提供更好的功率处理能力与传统的Wilkinson PD相比。具体地,在PD结构中使用零度复合右手和左手(CRL),这导致尺寸较小,更高的设计灵活性和比传统的甘蓝PD更宽的操作频带参考10-DB回波损耗和1-DB插入损耗。推导出闭合形设计方程,并且所提出的设计理论分别由两个PDS验证,其中心频率相同但不同的功率分裂比(P-2 / P-1)分别为1:1和2:1。根据实验结果,两个PDS比传统的Wilkinson PD具有更好的带外拒绝,在完全端口匹配下超过100%的分数操作带宽,以及超过85%的隔离带宽,具有15-dB的引用-32。 (c)2020 Elsevier GmbH。版权所有。

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