Wave transmission lines and networks – Long line elements and components – Waveguide elements and components
Patent
1978-11-01
1980-08-05
Nussbaum, Marvin L.
Wave transmission lines and networks
Long line elements and components
Waveguide elements and components
29600, 333253, 333263, H01P 128, H01P 124
Patent
active
042164508
ABSTRACT:
The present invention relates to millimeter waveguide shorts and methods for making said shorts wherein an exemplary rectangular cross-sectioned waveguide short comprises a base substrate such as steel shimstock or foil having a width equal to the associated millimeter waveguide, a raised portion disposed laterally on both sides of the substrate at alternate quarter-wavelength sections adjacent one end of the substrate. The raised portions comprise a first layer of good electrically conductive material disposed on the substrate and a second layer of an insulating material formed atop the first layer. Alternatively, the exposed substrate sections can be gold plated. A preferred method comprises the steps of masking alternate quarter-wavelength sections of the exposed major surfaces adjacent one end of the substrate, depositing the first layer material on the unmasked quarter-wavelength sections and depositing the second layer material on the exposed major surfaces of the first layer material.
REFERENCES:
patent: 2510016 (1950-05-01), Fernsler
patent: 2829352 (1958-04-01), Hennies et al.
patent: 2944234 (1960-07-01), Ronde
patent: 2981907 (1961-04-01), Bundy
patent: 3049684 (1962-08-01), Vaccaro et al.
"Sliding Short Eases Measurements" (Anonymous) in Microwave, vol. 9, Dec. 1970; p. 26.
Larsen et al. "A Broadband Noncontacting Sliding Short" in NBS Technical Note 602, Jun. 1971; 18 pp.
Yates et al.--"Millimeter Attenuation and Reflection Coefficient Measurement System", NBS Technical Note 619, Jul. 1972; pp. 9-13, 74-75.
Linke Richard A.
Schneider Martin V.
Bell Telephone Laboratories Incorporated
Nussbaum Marvin L.
Pfeifle Erwin W.
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