The Measurement of Coil Reactance in the 100-Megacycle Region

This paper describes apparatus and measuring technique which have been developed to permit a more reliable measurement of reactance in the 100-megacycle region. Experimental data taken on singlé-layer solenoids indicate that the distributed capacitance is seriously reduced by skin effect and proximity effect. The results question the validity of the Palermo¹equation in the ultra-high-frequency region when large wire sizes are involved.