Some artificial lines and networks associated with the uniform telephone transmission line

In Part 1, it is shown that the problem of constructing a network the impedance of which shall be equal to the impedance of an infinite uniform telephone line, can be solved exactly by the use of a number of sections of simple artificial lines. The artificial lines described are intended entirely for use in this way, and since their propagation constants are widely different from that of the uniform line, they cannot be used as ¿artificial transmission lines¿ to which any terminal apparatus might be added. Some of the artificial lines can be used for attenuation correction. In Part 2, it is shown that related networks can be obtained such that when placed in series or in parallel with the infinite uniform line, the impedance of the combination is a pure resistance