CST – Computer Simulation Technology

Title:
Reduction of Mutual Coupling in Compact Antenna Arrays Using Element Tilting
Author(s):
Maysam Ibraheam, Alexander Krauss, Safwat Irteza, Matthias A. Hein
Source:
German Microwave Conference (GeMIC), 2014
Vol./Issue/Date:
10 March 2014
Year:
2014
Page(s):
1 - 4
Keywords:
Compact antenna arrays, mutual coupling, elements tilting, radiation efficiency, patch antenna
Abstract:
In this paper, a uniform circular compact antenna array of five patch elements is investigated to operate at 2.44 GHz with a bandwidth of 60 MHz. The mutual coupling, which rises between the radiating elements because of the small element spacing, reduces the radiation efficiency of the compact array. Tilting of the individual patch elements along elevation is introduced to reduce this coupling and partially restore the antenna efficiency and, particularly, the efficiency of the highest-order eigenmode of the radiation pattern. However, this reduction is usually limited to a certain tilting range. It is shown also that this range is influenced by the element spacing and dimensions of the radiating elements.
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