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Limited ground effect on the radiation pattern of microstrip antenna is already known. A simple method to predict E plane radiation, except in the neighbourhood of the geometrical optical boundary that is theta =90 degrees , is presented. A very good value of the field on this boundary is given: it means that the leaving pattern could be constructed by interpolation. Good agreement is obtained between the theoretical results and the experimental measurements in the validity domain of the method.
Date of Publication: 21 June 1990