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Optimal design of an offset-fed, twin-slot antenna element for millimeter-wave imaging arrays

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3 Author(s)
Yongxi Qian ; Dept. of Electron. Eng., Univ. of Electro-Commun., Tokyo, Japan ; S. Iwata ; E. Yamashita

The optimal design of an offset-fed, twin-slot antenna suitable for millimeter wave imaging arrays is reported. The dimensions of the antenna and the slot separation for realizing a desirable beam pattern are obtained by using the spectral domain method. The optimal position of the feeding microstrips for perfect impedance matching is determined through a full-wave analysis using the FD-TD method, which takes into consideration both the slot elements and the feeding networks. The input characteristics of an optimally designed antenna is evaluated with a network analyzer, where a reasonable agreement with theoretical predictions is obtained.<>

Published in:

IEEE Microwave and Guided Wave Letters  (Volume:4 ,  Issue: 7 )