Correction to "Broadside-Coupled Strips in a Layered Dielectric Medium" (Letters)

In the above paper, to conform with the usual definitions of odd-and even-mode impedances, the impedance values read from Figs. 10, 14, 17, and 21 should be multiplied by two. The last sentence of paragraph one on page 664 should be changed to read: "The total capacitance for each mode is simply two times that obtained for the quarter-section." Mode velocities and other quantities are correct as given.