skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Low reflectance high power RF load

Abstract

A load for traveling microwave energy has an absorptive volume defined by cylindrical body enclosed by a first end cap and a second end cap. The first end cap has an aperture for the passage of an input waveguide with a rotating part that is coupled to a reflective mirror. The inner surfaces of the absorptive volume consist of a resistive material or are coated with a coating which absorbs a fraction of incident RF energy, and the remainder of the RF energy reflects. The angle of the reflector and end caps is selected such that reflected RF energy dissipates an increasing percentage of the remaining RF energy at each reflection, and the reflected RF energy which returns to the rotating mirror is directed to the back surface of the rotating reflector, and is not coupled to the input waveguide. Additionally, the reflector may have a surface which generates a more uniform power distribution function axially and laterally, to increase the power handling capability of the RF load. The input waveguide may be corrugated for HE11 mode input energy.

Inventors:
;
Publication Date:
Research Org.:
Calabazas Creek Research, Inc., San Mateo, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1241526
Patent Number(s):
9,252,472
Application Number:
14/172,911
Assignee:
Calabazas Creek Research, Inc. (San Mateo, CA) CHO
DOE Contract Number:  
SC0001930
Resource Type:
Patent
Resource Relation:
Patent File Date: 2010 Apr 12
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 43 PARTICLE ACCELERATORS

Citation Formats

Ives, R. Lawrence, and Mizuhara, Yosuke M. Low reflectance high power RF load. United States: N. p., 2016. Web.
Ives, R. Lawrence, & Mizuhara, Yosuke M. Low reflectance high power RF load. United States.
Ives, R. Lawrence, and Mizuhara, Yosuke M. Tue . "Low reflectance high power RF load". United States. https://www.osti.gov/servlets/purl/1241526.
@article{osti_1241526,
title = {Low reflectance high power RF load},
author = {Ives, R. Lawrence and Mizuhara, Yosuke M.},
abstractNote = {A load for traveling microwave energy has an absorptive volume defined by cylindrical body enclosed by a first end cap and a second end cap. The first end cap has an aperture for the passage of an input waveguide with a rotating part that is coupled to a reflective mirror. The inner surfaces of the absorptive volume consist of a resistive material or are coated with a coating which absorbs a fraction of incident RF energy, and the remainder of the RF energy reflects. The angle of the reflector and end caps is selected such that reflected RF energy dissipates an increasing percentage of the remaining RF energy at each reflection, and the reflected RF energy which returns to the rotating mirror is directed to the back surface of the rotating reflector, and is not coupled to the input waveguide. Additionally, the reflector may have a surface which generates a more uniform power distribution function axially and laterally, to increase the power handling capability of the RF load. The input waveguide may be corrugated for HE11 mode input energy.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {2}
}

Patent:

Save / Share: