Proximity effects for parallel rectangular conductors in nontransmission-line mode

In applications of electrically short antennas such as multiturn loops, variations in ohmic losses due to proximity effects can significantly affect uncorrected estimates of efficiency. This paper investigates experimentally the proximity effects on the current distributions and associated ohmic losses for two identical parallel rectangular cross-section conductors as a function of separation distance and cross section. Based upon the experimental results, a first-order theory is developed and verified.