Measurements of Attenuation and Phase Velocity of Various Laminate Materials at L-Band

Measured data are plotted for the characteristic impedance, velocity of propagation, and attenuation of dielectric sheet supported strip transmission lines for four dielectric materials: teflon bonded glass cloth, epoxy bonded glass cloth, polyester bonded glass mat, and XXXP paper base phenolic. At 1000 megacycles the teflon material is excellent and the epoxy and polyester materials satisfactory for low Q applications, such as microwave transmission lines.