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A Single Layer Wideband U-Slot Microstrip Patch Antenna Array

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3 Author(s)
Wang, H. ; Nanjing Univ. of Sci. & Technol., Nanjing ; Huang, X.B. ; Fang, D.G.

The design and measured results of a 2 times 2 microstrip line fed U-slot rectangular antenna array are presented. The U-slot patches and the feeding network are placed on the same layer, resulting in a very simple structure. The advantage of the microstrip line fed U-slot patch is that it is easy to form the array. An impedance bandwidth (VSWR < 2) of 18% ranging from 5.65 GHz to 6.78 GHz is achieved. The radiation performance including radiation pattern, cross polarization, and gain is also satisfactory within this bandwidth. The measured peak gain of the array is 11.5 dBi. The agreement between simulated results and the measurement ones is good. The 2 times 2 array may be used as a module to form larger array.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:7 )