Stub-supported transmission line device

Wave transmission lines and networks – Long lines – Shielded type

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Details

174 28, 333123, H01D 306

Patent

active

046707247

ABSTRACT:
A stub-support arrangement for a coaxial transmission line wherein the line has inner and outer conductors and the stub is in the form f oppositely disposed stubs each having a length of 1/8 wavelength at the center operating frequency or less. One of the stubs is an open-circuit stub and the other is a short-circuit stub. In the case of the stubs being of 1/8 wavelength, the characteristic admittances of the stubs are equal and in the case of the stubs being less than 1/8 wavelength the characteristic admittance of the open-circuit stub becomes larger and that of the short-circuit stub becomes smaller as the physical length of the stub is reduced.

REFERENCES:
patent: 1939053 (1933-12-01), Hunt
patent: 2751557 (1956-06-01), Sosin
patent: 3524190 (1970-08-01), Killion et al.
patent: 3863181 (1975-01-01), Glance et al.
Ragan, George L., Microwave Transmission Circuits; MIT Radiation Lab Series, vol. 9; pub. 1948; pp. 180-182.
Sandeman, E. K., "Transmission Line Filter"; Wireless Engineering; Jan. 1949, pp. 11-14.

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