A NEW COMPENSATING METHOD FOR THE MUTUAL COUPLING EFFECT IN ADAPTIVE ANTENNA ARRAYS COMPOSED OF WIRE ELEMENTS

2013 ◽  
Vol 35 ◽  
pp. 221-236
Author(s):  
Qiulin Huang ◽  
Hongxing Zhou ◽  
Xiao-Wei Shi
Keyword(s):  
Antenna Arrays ◽  
Mutual Coupling ◽  
Coupling Effect ◽  
Adaptive Antenna ◽  
Adaptive Antenna Arrays

scholarly journals Accurate DOA Estimations Using Microstrip Adaptive Arrays in the Presence of Mutual Coupling Effect

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Qiulin Huang ◽  
Hongxing Zhou ◽  
Jianhui Bao ◽  
Xiaowei Shi
Keyword(s):  
Antenna Arrays ◽  
Mutual Coupling ◽  
Coupling Effect ◽  
Beam Width ◽  
Calibration Method ◽  
New Method ◽  
Adaptive Antenna ◽  
Adaptive Arrays ◽  
Circularly Polarized ◽  
Linearly Polarized

A new mutual coupling calibration method is proposed for adaptive antenna arrays and is employed in the DOA estimations to calibrate the received signals. The new method is developed via the transformation between the embedded element patterns and the isolated element patterns. The new method is characterized by the wide adaptability of element structures such as dipole arrays and microstrip arrays. Additionally, the new method is suitable not only for the linear polarization but also for the circular polarization. It is shown that accurate calibration of the mutual coupling can be obtained for the incident signals in the 3 dB beam width and the wider angle range, and, consequently, accurate [1D] and [2D] DOA estimations can be obtained. Effectiveness of the new calibration method is verified by a linearly polarized microstrip ULA, a circularly polarized microstrip ULA, and a circularly polarized microstrip UCA.

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