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Effect of a Finite Substrate on the Mutual Coupling of a Pair of Microstrip Patch Antennas Positioned along the E-plane  

Kim, Tae-Young (School of Electronic Engineering, Soongsil University)
Kim, Gun-Su (School of Electronic Engineering, Soongsil University)
Kim, Boo-Gyoun (School of Electronic Engineering, Soongsil University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.47, no.6, 2010 , pp. 26-34 More about this Journal
Abstract
The mutual coupling of a pair of microstrip patch antennas on a finite grounded dielectric substrate is influenced by the diffracted field of surface waves from the edges of a substrate. The effective dielectric constant of a grounded dielectric substrate determines the distance between the antenna center and the edge of a substrate to obtain the minimum mutual coupling between a pair of microstrip patch antennas. The optimum substrate size with the minimum mutual coupling is easily calculated using the image method. The optimum substrate sizes using the linage method are in good agreement with the results obtained by the full wave simulation.
Keywords
Microstrip patch antennas; Phased array antenna; Mutual coupling; Image method; Finite grounded substrate;
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