On two arbitrarily located identical parallel antennas

The conventional problem of two arbitrarily located parallel antennas is solved by using an integral equation technique. The two simultaneous integral equations for the two antennas are first decoupled into two independent integral equations and then solved by an approximate method with currents represented by five trigonometric functions, three for the symmetric and two for the antisymmetric parts. Typical current distributions and input admittances are obtained for half-wave and full-wave antennas in nonstaggered, in echelon, and in collinear arrangements. For the nonstaggered case, the results agree with experimental data. For the other two arrangements, no experimental data are yet available. However, the current distribution is also obtained by a numerical method. The two theoretical results agree favorably for all three cases. The five-term method can be extended to a general array of -parallel elements. This is reserved for a further report.