Communications: radio wave antennas – Antennas – With housing or protective covering
Patent
1988-11-29
1990-08-14
Nelson, Peter A.
Communications: radio wave antennas
Antennas
With housing or protective covering
343911R, 342 4, 342 5, 102292, H01Q 142
Patent
active
049490958
ABSTRACT:
A new and improved fused silica radome is discussed. The radome has a density equal to or greater than 95 percent of theoretical density, an average bend strength equal to or greater than 10 Kpsi, a thermal expansion of about 0.3.times.10.sup.-6 .degree. C., a dielectric constant of about 3.8 at X-Band frequencies, a loss tangent of about 0.002 at X-Band frequencies, an average modulus of rupture greater than 10 Kpsi from room temperature to 1000.degree. C., and no crystalline phase present. The radome is made by an arc fusion process in which a quartz powder is placed within a graphite mold, then shaped by centrifugal force as the mold is rotated. An arc is then struck between electrodes within the mold cavity. The quartz powder fuses to form a dense silica radome which is removed from the mold after the fusion occurs.
REFERENCES:
patent: 3095162 (1963-06-01), Keon
patent: 3292544 (1966-12-01), Caldwell et al.
patent: 3336873 (1967-08-01), Wilford
patent: 3396220 (1968-08-01), Garside et al.
patent: 3596604 (1971-08-01), Corkery
patent: 3680130 (1972-07-01), Jones et al.
patent: 4358772 (1982-11-01), Leggett
patent: 4364884 (1982-12-01), Traut
patent: 4506269 (1985-03-01), Greene
patent: 4522883 (1985-06-01), Wallace et al.
patent: 4615859 (1986-10-01), Traut
patent: 4615933 (1986-10-01), Traut
patent: 4632686 (1986-12-01), Brown et al.
patent: 4642299 (1987-02-01), Hsieh
patent: 4654315 (1987-03-01), Hsieh
patent: 4708943 (1987-11-01), Hsieh et al.
patent: 4713104 (1987-12-01), Brown et al.
Brunswick Corp.'s Slip Cast Fused Silica (SCFS) Brochure, 16 pages (1987).
GTE Sylvania Emissive Products' Fused Quartz Brochure, 14 pages (1985).
Bowen Leslie J.
Michaud Brett E.
Neil Jeffrey T.
Craig Frances P.
Ericson Ivan L.
GTE Laboratories Incorporated
Nelson Peter A.
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