| 宽频带耦合带状线魔T的设计方法 |
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| 引用本文： | 田唯人,张建利,李娟妮. 宽频带耦合带状线魔T的设计方法[J]. 无线电工程, 2007, 37(9): 41-43 |
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| 作者姓名： | 田唯人 张建利 李娟妮 |
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| 作者单位： | 西北电子设备研究所,陕西,西安710065 |
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| 摘 要： | 给出一种宽频带耦合带状线90°移相器的工程设计方法。通过适当选取耦合带状线奇偶模阻抗比ρ、介质基片的相对介电常数εr与厚度s,以及带状线地板间距b,频带宽度可达1∶2.34倍频程可以实现所需带宽内90°移相,与宽频带3dB电桥组合可实现宽频带魔T,同时推导给出了3dB电桥耦合度κ、εr、s/b的设计关系公式。通过仿真给出了修正量。
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| 关 键 词： | 90°移相器 耦合带状线 电桥 魔T |
| 文章编号： | 1003-3106（2007）09-0041-03 |
| 修稿时间： | 2007-04-28 |
Design Method of a Wideband Magic-T with Coupled-strips |
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| TIAN Wei-ren,ZHANG Jian-li,LI Juan-ni. Design Method of a Wideband Magic-T with Coupled-strips[J]. Radio Engineering of China, 2007, 37(9): 41-43 |
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| Authors: | TIAN Wei-ren ZHANG Jian-li LI Juan-ni |
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| Abstract: | A design method of a wideband 90° phase-shifter with coupled strip-lines is presented.A wideband Magic-T can be designed ingeniously by combining a 90° phase-shifter and a 3 dB bridge.The bandwidth is about 1∶2.34 when phase-shift is in 90°±5° by changing the even-mode and odd-mode impedance ratio ρ,the dielectric constant εr,the thickness s and the ground plate distance b.The relationship of coupled coefficient κ,εr,s,b with 3 dB bridge is derived.The designed parameters have been calibrated by simulation. |
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| Keywords: | 90° phase-shifter coupled strip-line electric bridge magic-T |
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