Abstract
This paper presents simple numerical techniques for solving integrals involving products of two Bessel functions. Such techniques help the convergence of integrals used in the frequency-domain moment method, when the basis functions are Bessel functions of order zero (such as those normally used for rectangular microstrip antennas). Several other electromagnetic problems can benefit from these techniques. Bessel functions and their possible integrals are widely available in the literature, but these materials always target mathematicians and not engineers. The solution of the numerical integral depend on the complexity of the other functions that compose the integrand (Green's function), but certainly the techniques presented here can help
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