Bulk RF absorber apparatus and method

Details Bulk RF absorber apparatus and method Bulk RF absorber apparatus and method

1991-05-21

1993-04-13

Sotomayor, John B.

Communications: directive radio wave systems and devices (e.g.,

Radio wave absorber

342 4, H01Q 1700

Patent

active

052026884

ABSTRACT:
A bulk RF absorber and a method for constructing same. The absorber is composed of multiple sheets of a reticulated dielectric material, each sheet being coated with at least one layer of radiation absorbing material to create a radiation absorption gradient across a width dimension of the sheet. The sheets are stacked with their respective absorption gradients aligned to form the bulk absorber. In one embodiment, the coated sheets are constructed by lengthwise feeding the dielectric material through a sputtering region and interposing a partial mask between the sputtering material and the face of the dielectric material. The contour of an edge of the mask, the sputtering rate and feed rate determine the resulting absorption gradient of the coated dielectric material. In another embodiment, a dipping process is used to coat each sheet with radiation absorbing material.

REFERENCES:
patent: 2293839 (1942-08-01), Linder
patent: 2321587 (1943-06-01), Davie et al.
patent: 2822539 (1958-02-01), McMillan
patent: 2828484 (1958-03-01), Skellett
patent: 2951247 (1960-08-01), Halpern et al.
patent: 2961478 (1960-11-01), Burns
patent: 2977591 (1961-03-01), Tanner
patent: 2985880 (1961-05-01), McMillan
patent: 3124798 (1964-03-01), Zinke
patent: 3185986 (1965-05-01), McCaughna et al.
patent: 3290680 (1966-12-01), Wesch
patent: 3308462 (1967-03-01), Gluck
patent: 3440655 (1969-04-01), Wesch et al.
patent: 3454947 (1969-07-01), Wesch et al.
patent: 3464035 (1969-08-01), Van Kol
patent: 3568196 (1971-03-01), Bayrd et al.
patent: 3599210 (1971-08-01), Stander
patent: 3721982 (1973-03-01), Wesch
patent: 3806928 (1974-04-01), Costanza
patent: 3887920 (1975-06-01), Wright et al.
patent: 4006479 (1977-02-01), LaCombe
patent: 4012738 (1977-03-01), Wright
patent: 4050073 (1977-09-01), Wesch
patent: 4083755 (1978-04-01), Murata
patent: 4162496 (1979-07-01), Downen et al.
patent: 4287243 (1981-09-01), Nielsen
patent: 4327364 (1982-04-01), Moore
patent: 4439768 (1984-03-01), Ebneth et al.
patent: 4496950 (1985-01-01), Hemming et al.
patent: 4522890 (1985-06-01), Volkers et al.
patent: 4538151 (1985-08-01), Hatakeyama et al.
patent: 4636998 (1987-01-01), Greene et al.
patent: 4728554 (1988-03-01), Goldberg et al.
patent: 4960633 (1990-10-01), Hiza et al.
patent: 5003311 (1991-03-01), Roth et al.
patent: 5063384 (1991-11-01), Novak et al.
patent: 5081455 (1992-01-01), Inui et al.
patent: 5095311 (1992-03-01), Sajiki et al.
patent: 5110651 (1992-05-01), Massard et al.
patent: 5125992 (1992-06-01), Hubbard et al.
"Plastics As Microwave Dielectrics" by W. R. Cuming, Electronic Design, Sep. 3, 1958.
"Foam Plastics Handle a Wide Range of Jobs"-Electronics, Oct. 1956, pp. 196-199.
"Microwave Absorbers" by McMillan pp. 1-8.

Affiliated with

Also associated with

Rating

Bulk RF absorber apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bulk RF absorber apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bulk RF absorber apparatus and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1158319