Abstract: Stabilization of dielectrics used in transmission lines is described. In one implementation, the transmission line includes an outer conductor, a center conductor, and a dielectric material. The dielectric material separates the outer conductor from the center conductor. The center conductor has a conductive surface with a pattern distributed thereon. The pattern is configured to prevent the dielectric material from moving when the transmission line is exposed to an extreme temperature fluctuation. The pattern increases a coefficient of friction between the center conductor and dielectric material sufficient enough to prevent undesired motion of the dielectric material. In one implementation, the pattern includes indentations that are generally, but not necessarily limited to between 0.001 and 0.004 of an inch deep.

Abstract: Stabilization of dielectrics used in transmission lines is described. In one implementation, the transmission line includes an outer conductor, a center conductor, and a dielectric material. The dielectric material separates the outer conductor from the center conductor. The center conductor has a conductive surface with a pattern distributed thereon. The pattern is configured to prevent the dielectric material from moving when the transmission line is exposed to an extreme temperature fluctuation. The pattern increases a coefficient of friction between the center conductor and dielectric material sufficient enough to prevent undesired motion of the dielectric material. In one implementation, the pattern includes indentations that are generally, but not necessarily limited to between 0.001 and 0.004 of an inch deep.

Abstract: A low-loss, phase stable, microwave transverse electromagnetic delay line having an increased lifetime and a reduced cost of manufacture. The microwave delay line includes a TEM transmission line having a central conductor, a dielectric material covering the length of the central conductor, and a solid outer conductor on which the dielectric-covered central conductor is wound. The outer conductor includes at least one guide formed on a surface thereof into which the dielectric-covered central conductor is disposed. The microwave delay line further includes two microwave connectors mounted at respective ends of the outer conductor and operatively coupled to corresponding ends of the central and outer conductors, and a metal cover configured to enclose the microwave delay line to prevent signal leakage and protect the microwave delay line from environmental damage.