Wave transmission lines and networks – Long line elements and components – Waveguide elements and components
Patent
1978-08-31
1980-07-29
Nussbaum, Marvin L.
Wave transmission lines and networks
Long line elements and components
Waveguide elements and components
333 12, 333 99S, H01P 108, H01P 500, H01P 104, H01P 116
Patent
active
042153271
ABSTRACT:
A compact cryogenically coolable choked waveguide particularly for low-noise input coupling into a cryogenically cooled device, such as a maser or parametric amplifier, utilizes coaxial stainless steel support tubes surrounding the waveguide and connected in cascade to provide a folded low thermal conduction path. The edges of the tubes connected are welded.
REFERENCES:
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patent: 3094628 (1963-06-01), Jiu
patent: 3211947 (1965-10-01), Bloom
patent: 3343035 (1967-09-01), Garwin
patent: 3440881 (1969-04-01), Weissman
patent: 3441880 (1969-04-01), Weissman et al.
patent: 3796977 (1974-03-01), Elliot et al.
patent: 3902143 (1975-08-01), Fletcher et al.
patent: 3906412 (1975-09-01), Meyerhoff
Frosch Robert A. Administrator of the National Aeronautics and Space
McCrea Frank E.
Grifka Wilfred
Manning John R.
Mott Monte F.
Nussbaum Marvin L.
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