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Title: Radio-frequency and microwave load comprising a carbon-bonded carbon fiber composite

Patent ·
OSTI ID:644434

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.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)
DOE Contract Number:
AC05-84OR21400
Assignee:
Lockheed Martin Energy Systems, Inc., Oak Ridge, TN (United States)
Patent Number(s):
US 5,742,211/A/
Application Number:
PAN: 8-620,616
OSTI ID:
644434
Resource Relation:
Other Information: PBD: 21 Apr 1998
Country of Publication:
United States
Language:
English