Abstract A wide range coupling device for simultaneously balancing and matching two arbitrary impedances is provided which comprises a tapered line extending over several wavelengths and coiled into a helix of gradually increasing pitch. The tapered line comprises two equal lengths of conductive wire insulated with respect to each other. Taper dimensions are determined by first specifying and interconnecting said impedances and in a single plane adjusting the taper for minimum reflection utilizing time-domain reflectometry. An adhesive material is utilized to fix taper spacing. The tapered line is then rolled into a helix. Timedomain reflectometry is again utilized and helix pitch is adjusted for minimum reflection. The device when interconnecting both said impedances provides balancing and matching thereinbetween.
Inventors
👤 Cracken R Mc
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-25 06:42
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/08; H01P5/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
116 words
In combination with a radio frequency coupling device of the type comprising a helix of two conductive lines wherein each line has an input terminal and each line has an output terminal and wherein said input terminals are separated from each other by a first spacing therebetween and said output terminals are separated by a second spacing therebetween different from said first spacing, and wherein said lines have an approximately linearly increasing separation therebetween and wherein said lines are adapted to interconnect two preselected arbitrary impedances and adapted to electrically match and electrically balance these arbitrary impedances, the improvement comprising: means for adjusting the length of said helix while maintaining constant said separation between said lines.
Claim 2
Dependent Claim
116 words
In combination with a radio frequency coupling device of the type comprising a helix of two conductive lines wherein each line has an input terminal and each line has an output terminal and wherein said input terminals are separated from each other by a first spacing therebetween and said output terminals are separated by a second spacing therebetween different from said first spacing, and wherein said lines have an approximately linearly increasing separation therebetween and wherein said lines are adapted to interconnect two preselected arbitrary impedances and adapted to electrically match and electrically balance these arbitrary impedances, the improvement comprising: means for adjusting the length of said helix while maintaining constant said separation between said lines.
Claim 3
Dependent Claim
34 words
The invention of claim 1 wherein said means comprises a flexible strip of solid dielectric material, having uniform thickness and width, wound onto a hollow cylinder, said strip having said lines embedded lengthwise therein.
Claim 4
Dependent Claim
16 words
The combination of claim 2 wherein said device is completely immersed in an inflexible dielectric material.
Claim 5
Dependent Claim
19 words
The combination of claiM 3 wherein said flexible dielectric material and said inflexible dielectric material are both thermosetting substances.