C. Icheln et P. Vainikainen, Dual-frequency balun to decrease influence of RF feed cables in small antenna measurements, ELECTR LETT, 36(21), 2000, pp. 1760-1761
A dual-frequency balun applied in connection with measurements of small dua
l-frequency antennas reduces parasitic currents on the surface of the RF fe
ed cable, so that the influence of the RF measurement cable on the radiatio
n pattern is minimised.