Compact capacitive compensated directional coupler using planar artificial transmission lines

被引：6
|
作者：
Liu, C. [1 ]
Yang, T. [1 ]
Huang, K. [1 ]
Menzel, W. [2 ]
机构：
[1] Sichuan Univ, Sch Elect & Informat Engn, Chengdu 610064, Peoples R China
[2] Univ Ulm, Inst Microwave Tech, D-89069 Ulm, Germany
来源：
ELECTRONICS LETTERS | 2011年 / 47卷 / 24期
关键词：
Electric lines;
D O I：
10.1049/el.2011.2803
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：
A novel compact directional coupler based on planar artificial transmission lines is proposed. Interdigital capacitors are introduced to compensate for the odd-mode phase velocity in order to achieve a high directivity. The size of this proposed coupler is about 25% that of a conventional one. A 20 dB directional coupler at 900 MHz has been designed and fabricated. The directivity reaches 36 dB at the centre frequency. The design, simulation and measurements are presented.
引用
收藏
页码：1321 / 1322
页数：2
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