Radio-frequency and microwave load comprising a carbon-bonded carbon fiber composite
Abstract
A billet of low-density carbon-bonded carbon fiber (CBCF) composite is machined into a desired attenuator or load element shape (usually tapering). The CBCF composite is used as a free-standing load element or, preferably, brazed to the copper, brass or aluminum components of coaxial transmission lines or microwave waveguides. A novel braze method was developed for the brazing step. The resulting attenuator and/or load devices are robust, relatively inexpensive, more easily fabricated, and have improved performance over conventional graded-coating loads. 9 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)
- OSTI Identifier:
- 644434
- Patent Number(s):
- 5742211
- Application Number:
- PAN: 8-620,616
- Assignee:
- Lockheed Martin Energy Systems, Inc., Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 21 Apr 1998
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; RF SYSTEMS; MICROWAVE EQUIPMENT; COMPOSITE MATERIALS; BRAZING; ATTENUATION; ENERGY ABSORPTION
Citation Formats
Lauf, R J, McMillan, A D, Johnson, A C, Everleigh, C A, and Moorhead, A J. Radio-frequency and microwave load comprising a carbon-bonded carbon fiber composite. United States: N. p., 1998.
Web.
Lauf, R J, McMillan, A D, Johnson, A C, Everleigh, C A, & Moorhead, A J. Radio-frequency and microwave load comprising a carbon-bonded carbon fiber composite. United States.
Lauf, R J, McMillan, A D, Johnson, A C, Everleigh, C A, and Moorhead, A J. Tue .
"Radio-frequency and microwave load comprising a carbon-bonded carbon fiber composite". United States.
@article{osti_644434,
title = {Radio-frequency and microwave load comprising a carbon-bonded carbon fiber composite},
author = {Lauf, R J and McMillan, A D and Johnson, A C and Everleigh, C A and Moorhead, A J},
abstractNote = {A billet of low-density carbon-bonded carbon fiber (CBCF) composite is machined into a desired attenuator or load element shape (usually tapering). The CBCF composite is used as a free-standing load element or, preferably, brazed to the copper, brass or aluminum components of coaxial transmission lines or microwave waveguides. A novel braze method was developed for the brazing step. The resulting attenuator and/or load devices are robust, relatively inexpensive, more easily fabricated, and have improved performance over conventional graded-coating loads. 9 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 21 00:00:00 EDT 1998},
month = {Tue Apr 21 00:00:00 EDT 1998}
}
Search for the full text at the U.S. Patent and Trademark Office
Note: You will be redirected to the USPTO site, which may require a pop-up blocker to be deactivated to view the patent. If so, you will need to manually turn off your browser's pop-up blocker, typically found within the browser settings. (See DOE Patents FAQs for more information.)
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.