US4860602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
RF transparent thermal test chamber
Assignee: Harris Corp
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Filing: 1988-05-18
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Granted: 1989-08-29
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Expires: 2008-05-18
Abstract
Abstract A thermally insulated test chamber for performing antenna testing over a broad frequency range. An antenna to be tested is placed within the test chamber, which is constructed of non-RF-reflective styrofoam sheets surrounding the antenna on all sides. The air in the test chamber is heated or cooled, as desired, for testing the antenna over a range of temperatures.
Inventors
- 👤 Edward E. Hines
- 👤 Lee J. Royer
- 👤 Thomas D. Jehring
- 👤 William E. Faulkenberry
- 👤 Norvan J. Posey
- 👤 Joseph T. Richeson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:27
CPC Classifications
G; G01; G01M; G01M99/00; G01M99/002; G01R; G01R29/00; G01R29/08; G01R29/10; G01R29/105
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
61 words
A thermal test chamber for testing an antenna over a predetermined temperature range, comprising: a shell of thermal insulating non-RF reflective material for enclosing the antenna; a window portion in said shell, wherein said window portion is constructed of a material that provides thermal insulation and is substantially transparent to RF energy; and means for controlling the temperature within said shell.
Claim 2
Dependent Claim
61 words
A thermal test chamber for testing an antenna over a predetermined temperature range, comprising: a shell of thermal insulating non-RF reflective material for enclosing the antenna; a window portion in said shell, wherein said window portion is constructed of a material that provides thermal insulation and is substantially transparent to RF energy; and means for controlling the temperature within said shell.
Claim 3
Dependent Claim
24 words
The thermal test chamber of claim 1 wherein the shell includes a removable panel to provide access to the interior of the test chamber.
Claim 4
Dependent Claim
42 words
The thermal test chamber of claim 1 wherein the means of controlling the temperature includes: means for providing hot air; means for providing cold air; and means for injecting the hot or cold air into the test chamber at a controlled rate.
Claim 5
Dependent Claim
15 words
The thermal test chamber of claim 1 wherein said window is constructed of cellular polystyrene.
Claim 6
Dependent Claim
14 words
The thermal test chamber of claim 1 wherein the window is constructed of plexiglass.
Claim 7
Dependent Claim
59 words
A thermal test chamber for testing an antenna over a predetermined temperature range, comprising: a frame of non-RF reflective material; polystyrene foam insulating material attached to the inside and the outside surfaces of said frame so as to form an air gap between said inside and said outside surfaces; and means for controlling the temperature within said test chamber.
Claim 8
Dependent Claim
59 words
A thermal test chamber for testing an antenna over a predetermined temperature range, comprising: a frame of non-RF reflective material; polystyrene foam insulating material attached to the inside and the outside surfaces of said frame so as to form an air gap between said inside and said outside surfaces; and means for controlling the temperature within said test chamber.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-28 | 1993-02-27 | 1993-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-28 | 1997-02-27 | 1997-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-28 | 2001-02-27 | 2001-08-29 | $7700.00 | Window Closed / Lapsed |