A Balanced Frequency Doubler Covering 140-220 GHz With an Efficiency of 6.8%-11.6%
A Balanced Frequency Doubler Covering 140-220 GHz With an Efficiency of 6.8%-11.6%
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A%20平衡%20频率%20倍频%20覆盖%20140-220%20GHz%20With%20an%20效率%20of%206.8%-11.6%
DOI：
10.1109/lmwc.2022.3160707
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发表时间：
2022
影响因子：
3
通讯作者：
Ruimin Xu
中科院分区：
文献类型：
--
作者：
Chengkai Wu;Yong Zhang;Yukun Li;Huali Zhu;Li Wang;Chunyue Dai;Bo Yan;Ruimin Xu
在这封信中，报告了覆盖140-220 GHz范围的全频带平衡倍频器。为了给肖特基势垒二极管（sbd）提供反相位，采用了一种新型的内联波导-微带（wb - ms）跃迁，该跃迁同时用作模式转换和宽带平衡。产生的二次谐波由锥形波导直接提取，并作为宽带输出匹配。与传统的erickson型倍频器相比，该倍频器不仅具有固有的内联输入输出结构，而且在带宽扩大的情况下消除了输出电路的介电损耗和过渡损耗。为了验证所提出的概念，制作并测量了该倍频器，在10-20 mW输入功率下，其在整个140-220 GHz频段的转换效率为6.8%-11.6%。
In this letter, a full-band balanced frequency doubler covering 140–220 GHz range is reported. To feed the Schottky barrier diodes (SBDs) with a reverse phase, a novel inline waveguide-to-microstrip (WG-to-MS) transition is adopted, which is used as mode conversion and broadband balun simultaneously. The generated second-harmonic is extracted directly by a taper waveguide, which also serves as broadband output matching. Compared with traditional Erickson-style frequency doublers, the presented doubler not only possesses an inherent inline input–output configuration, but also eliminates the dielectric loss and transition loss at the output circuit with an expanded bandwidth. To verify the proposed concept, the doubler is fabricated and measured, which exhibits a conversion efficiency of 6.8%–11.6% across the whole 140–220 GHz band under 10–20 mW input power.