Slow-wave substrate integrated suspended parallel strip line and its application to rat-race coupler

被引：0
作者：
Shen, Huajiao [1 ]
Wang, Yongqiang [1 ]
Meng, Fanyi [1 ]
Ma, Kaixue [1 ]
机构：
[1] Tianjin Univ, Sch Microelect, Tianjin Key Lab Imaging & Sensing Microelect Techn, Tianjin 300072, Peoples R China
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2023年 / 65卷 / 12期
基金：
中国国家自然科学基金;
关键词：
compact size; double-sided parallel-strip line (DSPSL); rat-race coupler; slow-wave; substrate integrated suspended line (SISL); substrate integrated suspended parallel strip line (SISPSL); BAND; FILTER;
D O I：
10.1002/mop.33870
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper presents a slow-wave substrate integrated suspended parallel strip line (SW-SISPSL) for the first time. The slow-wave effect is produced by cascading high/low-impedance SISPSL in the meander line configuration. Different from conventional single-ended slow-wave transmission lines, the proposed SW-SISPSL supports differential signal transmission. The characteristic impedance and slow-wave factor of the SW-SISPSL are analyzed using equivalent circuit models. Using the proposed SW-SISPSL and a SISPSL phase inverter, a very compact rat-race coupler is implemented. The core circuit area of the slow-wave rat-race coupler is 0.083 & lambda;g x 0.089 & lambda;g, which is only 4.12% of the conventional topology.
引用
收藏
页码：3196 / 3203
页数：8
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