 技術摘要 / Our Technology： |
本發明為一種空橋式馬迅平衡不平衡轉換器,其係可在不增加電路的面積下,增進電路頻寬,以及增加電路的應用範圍。本發明將原本馬迅平衡不平衡轉換器(Marchand Balun)使用的兩線邊緣平行耦合線,以三線邊緣平行耦合線取代,並且將兩邊的線在中間線上面用空橋跨接,因此可視為多了一段上下耦合線,故可大幅增加耦合量,進而達到增進頻寬的效果。依照本發明所提供的架構及方法所製作出的單晶毫米波積體電路混頻器,可有效縮減傳統電路的面積。
A microwave or millimeter-wave balun is provided. The balun uses three edge-coupled lines along with a plurality of air bridges instead of two edge-coupled lines used in a conventional planar Marchand balun. The first edge-coupled line and the second edge-coupled line are substantially parallel, and the third edge-coupled line is disposed also substantially in parallel between the first edge-coupled line and the second edge-coupled line. The plurality of air bridges are transmission lines between the first edge-coupled line and the second edge-coupled line. The air bridges have total width longer than one half of the total length of the first edge-coupled line or the second edge-coupled line. By combining three edge-coupled-lines and a plurality of air bridges, the Marchand balun has a higher coupling coefficient and increases the operation bandwidth. The microwave monolithic integrated circuit (MMIC) mixer based on the balun can provide compact size compared to conventional ones.
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| 專利簡述 / Intellectual Properties： |
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聯繫方式 / Contact： |
| 臺大產學合作總中心 / Center of Industry-Academia Collaboration, NTU |
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| Email：ordiac@ntu.edu.tw |
電話/Tel：02-3366-9945 |
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專利行銷平台