The Mutual Impedance between Adjacent Antennas

The simple theory for the computation of reflecting or multibranch antenna systems is sketched. If the points at which observations of electrical quantities are to be made are definitely specified, a knowledge of the self and mutual impedances (properly defined) between antennas is sufficient to make the computations determinate. Of the circuit constants, the most useful and accessible is the antenna current ratio 2 i( 4-( 2rd/ X) ) K1, = II = Koe and in the work here reported ϕ has been measured in the range 0.33λ to 1λ. Experiment has shown that in this range ϕ is that theoretically calculable for a Hertzian doublet. Actually this range is equivalent to λ/3 to ∞. The discussion of experimental procedure is purposely thorough.