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Title: Wave guide impedance matching method and apparatus

Abstract

A technique for modifying the end portion of a wave guide, whether hollow or solid, carrying electromagnetic, acoustic or optical energy, to produce a gradual impedance change over the length of the end portion, comprising the cutting of longitudinal, V-shaped grooves that increase in width and depth from beginning of the end portion of the wave guide to the end of the guide so that, at the end of the guide, no guide material remains and no surfaces of the guide as modified are perpendicular to the direction of energy flow. For hollow guides, the grooves are cut beginning on the interior surface; for solid guides, the grooves are cut beginning on the exterior surface. One or more resistive, partially conductive or nonconductive sleeves can be placed over the exterior of the guide and through which the grooves are cut to smooth the transition to free space.

Inventors:
 [1]
  1. Beech Island, SC
Issue Date:
Research Org.:
E I DUPONT DE NEMOURS & CO INC
OSTI Identifier:
867512
Patent Number(s):
4952892
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01P - WAVEGUIDES
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01Q - ANTENNAS, i.e. RADIO AERIALS
DOE Contract Number:  
AC09-76SR00001
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
wave; guide; impedance; matching; method; apparatus; technique; modifying; portion; hollow; solid; carrying; electromagnetic; acoustic; optical; energy; produce; gradual; change; length; comprising; cutting; longitudinal; v-shaped; grooves; increase; width; depth; beginning; material; remains; surfaces; modified; perpendicular; direction; flow; guides; cut; interior; surface; exterior; resistive; partially; conductive; nonconductive; sleeves; placed; smooth; transition; free; space; wave guide; interior surface; optical energy; exterior surface; impedance matching; free space; v-shaped grooves; impedance change; v-shaped groove; conductive sleeve; /333/385/

Citation Formats

Kronberg, James W. Wave guide impedance matching method and apparatus. United States: N. p., 1990. Web.
Kronberg, James W. Wave guide impedance matching method and apparatus. United States.
Kronberg, James W. Mon . "Wave guide impedance matching method and apparatus". United States. https://www.osti.gov/servlets/purl/867512.
@article{osti_867512,
title = {Wave guide impedance matching method and apparatus},
author = {Kronberg, James W},
abstractNote = {A technique for modifying the end portion of a wave guide, whether hollow or solid, carrying electromagnetic, acoustic or optical energy, to produce a gradual impedance change over the length of the end portion, comprising the cutting of longitudinal, V-shaped grooves that increase in width and depth from beginning of the end portion of the wave guide to the end of the guide so that, at the end of the guide, no guide material remains and no surfaces of the guide as modified are perpendicular to the direction of energy flow. For hollow guides, the grooves are cut beginning on the interior surface; for solid guides, the grooves are cut beginning on the exterior surface. One or more resistive, partially conductive or nonconductive sleeves can be placed over the exterior of the guide and through which the grooves are cut to smooth the transition to free space.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}

Patent:

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