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首页> 外文期刊>Microwaves, Antennas & Propagation, IET >High-power impedance tuner utilising substrate-integrated evanescent-mode cavity technology and external linear actuators
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High-power impedance tuner utilising substrate-integrated evanescent-mode cavity technology and external linear actuators

机译：大功率阻抗调谐器，利用集成了基板的瞬态模腔技术和外部线性致动器

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摘要

A 100 W electronically controlled impedance tuner is introduced and experimentally investigated here. The proposed tuner is composed of two individually controlled coupled evanescent-mode (EVA) cavity resonators implemented on a printed circuit board (PCB) using substrate-integrated waveguide (SIW) technology. The contactless tuning mechanism relies on two high-resolution external linear actuators controlling the gap size of each resonator with submicron accuracy. A 3.3 GHz prototype tuner successfully handled up to 100 W of input power with similar to 90% Smith chart coverage at the centre frequency and about 52% bandwidth demonstrating at least 50% coverage. Exhibiting low loss of 0.56 dB and very high stability as well, the proposed impedance tuner is a viable solution for high-power applications where electronic precise tuning is desired.
机译：本文介绍了一种100 W电控阻抗调谐器，并进行了实验研究。拟议的调谐器由两个单独控制的耦合瞬逝模式（EVA）腔谐振器组成，该谐振器使用衬底集成波导（SIW）技术实现在印刷电路板（PCB）上。非接触式调谐机制依赖于两个高分辨率外部线性致动器，以亚微米精度控制每个谐振器的间隙尺寸。一个3.3 GHz的原型调谐器成功地处理了高达100 W的输入功率，在中心频率处的史密斯圆图覆盖率接近90％，带宽约52％，表明覆盖率至少为50％。所提出的阻抗调谐器具有0.56 dB的低损耗和极高的稳定性，是需要电子精确调谐的高功率应用的可行解决方案。

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