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EFFECTS OF GROUND ON ANTENNA MUTUAL IMPEDANCE FOR DOA ESTIMATION USING DIPOLE ARRAYS

By I. Ahmed and W. Perger

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Abstract:
This paper investigates the effects on received mutual coupling of λ/2 dipole arrays placed near real-earth. As a rule of thumb, estimation of mutual coupling can be divided in two regions of antenna height that is very near ground 0 < h < λ and fairly freespace region h ≥ λ. The receiving antenna mutual coupling remains fairly unaffected from ground conductivity, when antenna height h ≥ λ. Both vertical and horizontal polarization cases showed the same trend. Investigation of effects of nearness of good-ground to the array on DOA estimation revealed that for azimuth DOA estimation, the proposed method of removing mutual coupling works well even for near ground.

Citation:
I. Ahmed and W. Perger, "Effects of Ground on Antenna Mutual Impedance for DOA Estimation Using Dipole Arrays," Progress In Electromagnetics Research C, Vol. 46, 179-185, 2014.
doi:10.2528/PIERC13111605

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