Figure 1

Transmitter field-strength pattern and surface curve-fit. (a) Transmitter field-strength pattern and a surface curve-fit to the calculated dipole transmitter pattern for L/λ = 0.2. (b) Signal Fall-off indicates the primarily cubic nature of the observed fall-off in voltage signal strength vs. receiver to antenna separation. Equations of the form Y = a + b/(X^n) n = 1, 7 were fitted to the data with the "best fit" for each order being reported as its r-square value.