Two-Conductor Low-Pass Transmission Line Theory

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Author(s): Tobin, H. G.
Corporate Author(s): Armour Research Foundation
Corporate Report Number: ARF 5167-Q5
Date of Publication: 1962-09-30
Pages: 42
Contract: N178-7927
DoD Task:
AD Number: AD-292 110

Effort was concerned with the fabrication of practical models of transmission lines which theoretically exhibit a desired attenuation as a function of frequency. In particular, effort is being concentrated upon the LG type of line. This line may be represented as a series inductance and a shunt conductance. The major difficulties in fabricating this type of line have arisen due to the inability to insure that contact is made between the conducting dielectric and the inner and outer conductors of the line. Some of the proposed techniques for overcoming this deficiency are described. A more thorough discussion of the mismatched transmission line is given. Also included is an analysis of a lump-loaded line which assumes that a pure inductance is used to provide the load. It is concluded that they use o such a technique in an LG line will not allow a steeper rise in attenuation than is now possible.

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