New expressions for mutual impedance of nonplanar-skew sinusoidal monopoles

Previously published expressions for monopole-monopole impedance to two nonplanar-skew sinusoidal current filaments are nonreciprocal. A novel version of the monopole-monopole impedance is obtained. This version is not only reciprocal but also contains fewer exponential integral terms. The new expressions can be used to save computer time in the thin wire program developed by J.H. Richmond (1974).<
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