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This paper presents a comprehensive analysis and design of electromagnetically coupled corner-series-fed antenna arrays. A theoretical modeling approach is used to estimate the required coupling level and the amplitude distribution across the radiating elements. The 4x1 antenna array has been designed with the use of Arlon copper- cladded foam, manufactured and measured. The obtained results are in a good agreement with the calculated ones and confirm the usefulness of the proposed design method. The designed antenna is suitable for operation in 24 GHz motion Doppler sensors; moreover, it can be used as a subarray of larger antenna arrays.