US3815054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balanced, low impedance, high frequency transmission line
Assignee: RCA Corp
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Filing: 1973-07-27
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Granted: 1974-06-04
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Expires: 1993-07-27
Abstract
Abstract A plurality of insulated equal diameter conductors are clustered in a ring about a centered idler conductor. By providing a center idler conductor insulated from the outer conductors, while connecting only every other one of the outer conductors in parallel between first and second terminals and connecting only the remaining outer conductors in parallel between third and fourth terminals, a transmission line of low impedance, balance and symmetry is provided.
Inventors
- 👤 Clure D Mc
- 👤 H Nichols
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:39
CPC Classifications
H; H01; H01P; H01P5/00; H01P3/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
151 words
A balanced, low impedance transmission line for propagating signals at relatively high radio frequencies comprising, in combination: a vermiform body extending along the center of said transmission line having at least a substantial conductive surface, a plurality of even numbered insulated substantially equal diameter wires peripherally clustered in a ring about said body with said conductive surface insulated from the conductive portIon of said wires and with said wires extending along the length of said transmission line, means at first and second terminal points located at substantially opposite ends of said equal diameter wires to connect only every other one of said equal diameter wires in parallel, and means at third and fourth terminal points located at substantially opposite ends of said equal diameter wires to connect only the remaining of said equal diameter wires in parallel, said body being insulated from said wires along the length of said transmission line.
Claim 2
Dependent Claim
151 words
A balanced, low impedance transmission line for propagating signals at relatively high radio frequencies comprising, in combination: a vermiform body extending along the center of said transmission line having at least a substantial conductive surface, a plurality of even numbered insulated substantially equal diameter wires peripherally clustered in a ring about said body with said conductive surface insulated from the conductive portIon of said wires and with said wires extending along the length of said transmission line, means at first and second terminal points located at substantially opposite ends of said equal diameter wires to connect only every other one of said equal diameter wires in parallel, and means at third and fourth terminal points located at substantially opposite ends of said equal diameter wires to connect only the remaining of said equal diameter wires in parallel, said body being insulated from said wires along the length of said transmission line.
Claim 3
Dependent Claim
51 words
The combination claimed in claim 1 wherein the thickness and dielectric constant of the insulative sheathing of said insulated equal diameter wires is selected to provide enhanced capacitance between said equal diameter wires and between the conductive surface of said body and said equal diameter wires at said high radio frequencies.
Claim 4
Dependent Claim
25 words
The combination claimed in claim 2 wherein said vermiform body is a continuous conductor and an insulative sheathing surrounds the conductive surface of said body.
Claim 5
Dependent Claim
30 words
The combination claimed in claim 3 wherein said continuous conductor and insulated sheathing thereon form a structure the diameter of which equals the diameter of said insulated equal diameter wires.
Claim 6
Dependent Claim
15 words
The combination claimed in claim 1 wherein said plurality of equal diameter wires is six.
Claim 7
Dependent Claim
32 words
The combination claimed in claim 1 wherein said vermiform body is a wire conductor of all conductive material having a diameter equal to that of said equal diameter wires including the insulation.
Claim 8
Dependent Claim
43 words
The combination claimed in claim 1 wherein said vermiform body has a dielectric center portion substantially surrounded by a conductive portion and the diameter of the dielectric portion and the conductive portion equals the diameter of the equal diameter wires including the insulation.
Claim 9
Dependent Claim
20 words
The combination claimed in claim 1 wherein said equal diameter wires are given a moderate twist along the lengthwise axis.
Claim 10
Dependent Claim
21 words
The combination claimed in claim 1 including a conductive shield about the insulated equal diameter wires coaxial with said vermiform body.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |