Low-cost wideband double-layer microstrip coupled-line directional coupler with high directivity

被引：0

作者：

Esfeh, Babak Kazemi ^{[1
]}

Raskin, Jean-Pierre ^{[1
]}

Van Moer, Wendy ^{[2
,3
]}

机构：

[1] Catholic Univ Louvain, Inst Informat & Commun Technol Elect & Appl Math, B-1348 Louvain, Belgium

[2] Univ Gavle, Fac Engn, Dept Fundamental Elect & Instrumentat, SE-80176 Gavle, Sweden

[3] Univ Gavle, Dept Elect Math & Nat Sci, Fac Engn, SE-80176 Gavle, Sweden

来源：

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2014年 / 56卷 / 07期

关键词：

directivity; directional coupler; composite right/left handed materials; double-layer microstrip structure; isolation; DESIGN;

D O I：

10.1002/mop.28391

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：

In this article, a low-cost double-layer microstrip structure with a gap space between the two substrate layers is used to develop a microstrip coupled-line directional coupler with high directivity. The proposed design shows a high directivity (more than 20 dB) over a wide frequency bandwidth (more than 2 GHz). The double-layer directional coupler, designed on FR4 substrate material at 2.4 GHz provides more than 30 dB isolation. The simulation and measurement results are in good agreement. By applying a simple and low-cost fabrication process and design, the directivity of the directional coupler is enhanced by more than 10 dB compared with a microstrip structure. (c) 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1570-1575, 2014

引用

页码：1570 / 1575

页数：6

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