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Title: Waveguide mode converter and method using same

Abstract

A waveguide mode converter converts electromagnetic power being transmitted in a TE.sub.0n or a TM.sub.0n mode, where n is an integer, to an HE.sub.11 mode. The conversion process occurs in a single stage without requiring the power to pass through any intermediate modes. The converter comprises a length of circular corrugated waveguide formed in a multiperiod periodic curve. The period of the curve is selected to couple the desired modes and decouple undesired modes. The corrugation depth is selected to control the phase propagation constant, or wavenumbers, of the input and output modes, thereby preventing coherent coupling to competing modes. In one embodiment, both the period and amplitude of the curve may be selectively adjusted, thereby allowing the converter to be tuned to maximize the conversion efficiency.

Inventors:
 [1]
  1. (Del Mar, CA)
Issue Date:
Research Org.:
CALIFORNIA INSTITUTE OF TECH
OSTI Identifier:
867524
Patent Number(s):
4956620
Assignee:
United States of America as represented by United States (Washington, DC) OSTI
DOE Contract Number:  
AC03-84ER51044
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
waveguide; mode; converter; method; converts; electromagnetic; power; transmitted; 0n; tm; integer; 11; conversion; process; occurs; single; stage; requiring; pass; intermediate; modes; comprises; length; circular; corrugated; formed; multiperiod; periodic; curve; period; selected; couple; desired; decouple; undesired; corrugation; depth; control; phase; propagation; constant; wavenumbers; input; output; preventing; coherent; coupling; competing; embodiment; amplitude; selectively; adjusted; allowing; tuned; maximize; efficiency; corrugated waveguide; conversion process; conversion efficiency; single stage; propagation constant; waveguide mode; selectively adjusted; waveguide formed; mode converter; converter comprises; process occurs; converter converts; /333/

Citation Formats

Moeller, Charles P. Waveguide mode converter and method using same. United States: N. p., 1990. Web.
Moeller, Charles P. Waveguide mode converter and method using same. United States.
Moeller, Charles P. Mon . "Waveguide mode converter and method using same". United States. https://www.osti.gov/servlets/purl/867524.
@article{osti_867524,
title = {Waveguide mode converter and method using same},
author = {Moeller, Charles P.},
abstractNote = {A waveguide mode converter converts electromagnetic power being transmitted in a TE.sub.0n or a TM.sub.0n mode, where n is an integer, to an HE.sub.11 mode. The conversion process occurs in a single stage without requiring the power to pass through any intermediate modes. The converter comprises a length of circular corrugated waveguide formed in a multiperiod periodic curve. The period of the curve is selected to couple the desired modes and decouple undesired modes. The corrugation depth is selected to control the phase propagation constant, or wavenumbers, of the input and output modes, thereby preventing coherent coupling to competing modes. In one embodiment, both the period and amplitude of the curve may be selectively adjusted, thereby allowing the converter to be tuned to maximize the conversion efficiency.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}

Patent:

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