Wave guide impedance matching method and apparatus

Patent Application · Fri May 12 00:00:00 EDT 1989

OSTI ID:6723783

Kronberg, J W

A technique for modifying the end portion of a wave guide, whether hollow and 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.

• Research Organization: Du Pont de Nemours (E.I.) and Co., Aiken, SC (USA)
• Sponsoring Organization: DOE/DP
• DOE Contract Number: AC09-76SR00001
• Assignee: Dept. of Energy
• Patent Number(s): PATENTS-US-A7350817
• Application Number: ON: DE90014584; PPN: US 7-350817
• OSTI ID: 6723783
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
WAVEGUIDES
ELECTRIC IMPEDANCE
ENERGY LOSSES
INVENTIONS
MICROWAVE RADIATION
POWER TRANSMISSION
SOUND WAVES
SURFACES
ELECTROMAGNETIC RADIATION
IMPEDANCE
LOSSES
RADIATIONS
420200* - Engineering- Facilities
Equipment
& Techniques
657002 - Theoretical & Mathematical Physics- Classical & Quantum Mechanics