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Analysis and design of tapered slot antenna for ultra-wideband applications

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5 Author(s)
Yuan Yao ; Department of Electronic Engineering, Tsinghua University, Beijing 100084, China ; Wenhua Chen ; Bin Huang ; Zhenghe Feng
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The tapered slot antenna, such as Vivaldi, has been widely used due to its ultra-wideband, high gain, simple feed structure, and easy fabrication. However, there is no rigorous analytical theory for this type of antenna. This paper analyzed the metal parts of a tapered slot antenna in a conical coordinate system with the medium analyzed in rectangular coordinates. This mixed mode gave an approximate analytical form for the tapered slot antenna with the field distribution and radiation characteristics. A planar tapered slot antenna was proposed according to the results of the analysis methods. Measured and simulated results demonstrate the antenna performance. The antenna shows good impedance matching over a wide bandwidth of 9 GHz, from 2 GHz to 11 GHz, and good radiation patterns. It is suitable for ultra-wideband applications.

Published in:

Tsinghua Science and Technology  (Volume:14 ,  Issue: 1 )