A corner diffraction formula

A corner diffraction formula is derived by evaluating asymptotically the radiation integral using the equivalent edge current. Unlike the original equivalent current method, the equivalent edge current used here is in terms of the uniform general theory of diffraction (GTD) instead of Keller´s GTD, and the result is uniformly continuous through the entire far-field region. A computation example is given to confirm the validity of the formula. A 1/4 lambda monopole located at the center of a square perfectly conducting plate was considered. Both in the diagonal plane and in the y-z plane, good agreement of the computed pattern with the measured one was achieved.<>