Transdirectional Coupled-Line Couplers Implemented by Periodical Shunt Capacitors
Transdirectional Coupled-Line Couplers Implemented by Periodical Shunt Capacitors
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DOI：
10.1109/tmtt.2009.2034219
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发表时间：
2009-11
影响因子：
4.3
通讯作者：
Ching-Ian Shie;Jui-Ching Cheng;Sheng-Chun Chou;Y. Chiang
中科院分区：
文献类型：
--
作者：
Ching-Ian Shie;Jui-Ching Cheng;Sheng-Chun Chou;Y. Chiang
横向耦合线耦合器具有完美的输入/输出隔离的优点。然而，对于耦合线耦合器来说，工作在横向模式下，需要相位耦合和阻抗耦合，这是传统耦合线难以满足的。为了克服这个问题，本文提出了一种新型的横向耦合线耦合器周期加载耦合线实现。设计并制造了两个3 dB 90°混合电路来验证这一概念。第一个是建立在FR-4基板上，工作在3.6 GHz。第二个是建立在罗杰RT/Duroid 5870基板上，长度减少，工作在3.6 GHz。与模拟结果吻合较好。
Transdirectional coupled-line couplers have the benefit of perfect input/output isolation. However, for a coupled-line coupler to operate in transdirectional mode, both phase- and impedance-coupling are required, which is difficult to meet by traditional coupled lines. To overcome this problem, this paper presents a novel transdirectional coupled-line coupler implemented by periodically loaded coupled lines. Two 3-dB 90° hybrids are designed and built to verify this concept. The first one was built on FR-4 substrates and operated at 3.6 GHz. The second one was built on Roger RT/Duroid 5870 substrates with length reduced and operated at 3.6 GHz. A good agreement with simulated results is reached.