基于多层LCP技术宽带微带到微带无孔垂直过渡结构的设计

doi:10.1007/s12204-023-2621-z

摘要/Abstract

摘要：

本文提出了一种Ka波段宽带微带到微带槽线多模谐振器的无孔垂直过渡结构。在4层LCP电路中，所提出的过渡结构主要包括在公共地平面上的槽线谐振器，以及顶层和第3层彼此相对的两条微带线。为了改善所提出过渡结构的带宽，在顶层和第3层微带线上分别添加了U型枝节线。通过调节U型枝节线的位置，可以适当地激发槽线谐振器。因此，获得了一个三极点宽频垂直过渡结构，在29.27—39.9 5 GHz宽频范围内显示出良好的传输性能。基于多层LCP衬底设计了三极点宽带垂直过渡结构，并进行了制作和测试。测试结果表明，可以得到在26.84—36.26 GHz的宽频率范围内，回波损耗优于-10 dB，插入损耗小于-3 dB。

关键词: 宽带, 微带到微带, 无孔垂直过度结构, 槽线谐振器

Abstract: A Ka-band wideband microstrip-to-microstrip (MS-to-MS) vialess vertical transition on slotline multimode resonator (MMR) is presented. The proposed transition mainly consists of a slotline MMR on the common ground plane, and two microstrip (MS) lines facing each other at the top and third layers in the four-layered liquid crystal polymer (LCP) substrate. In order to improve the bandwidth of the proposed transition, a U-shaped branch is added to the top- and third-layer MS lines, separately. The slotline MMR can be properly excited by setting the position of the U-shaped branch line. As such, a three-pole wideband vertical transition is obtained, which shows a good transmission performance over a wide frequency range of 29.27—39.95 GHz. The three-pole wideband vertical transition based on multilayer LCP substrate is designed, fabricated, and measured. Test results indicate that a wide frequency range of 26.84—36.26 GHz can be obtained with return loss better than −10 dB and insertion loss less than −3dB.

中图分类号:

TN45

. 基于多层LCP技术宽带微带到微带无孔垂直过渡结构的设计[J]. J Shanghai Jiaotong Univ Sci, 2025, 30(2): 220-226.

LIU Weihong , GUAN Dongyang , HUANG Qian , CHEN Liuyang, ZHANG Menglin . Wideband Microstrip-to-Microstrip Vialess Vertical Transition Based on Multilayer Liquid Crystal Polymer Technology[J]. J Shanghai Jiaotong Univ Sci, 2025, 30(2): 220-226.

参考文献

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