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EP0043591A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Antenna

Assignee: Individual
•
Filing: 1981-07-09
•
Granted: —
•
Expires: 2001-07-09
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Abstract

Abstract An antenna for transmitting or receiving electromagnetic radiation, comprising a conductor configured to establish a closed standing wave path, and to inhibit the velocity of propagation and support a standing electromagnetic wave. An embodiment of the antenna shows a toroidal helix antenna (61), which is adapted for unbalanced feed from transmission line (62). A sliding tap (65) is moved to a point for proper impedance matching.

Inventors

  • 👤 James F. Corum

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-01 07:40
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/36; H01Q7/00; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/26; H01Q9/265

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 55 words
An electromagnetic wave= antenna system comprising: electrical conducting means for establishing a closed standing electromagnetic wave path in response to the transmission of electromagnetic energy in said antenna, CHARACTERIZED IN THAT said path inhibits the velocity of propogation of electromagnetic waves in said antenna and supports a standing electromagnetic wave at a predetermined resonant frequency.
Claim 2
Dependent Claim 55 words
An electromagnetic wave= antenna system comprising: electrical conducting means for establishing a closed standing electromagnetic wave path in response to the transmission of electromagnetic energy in said antenna, CHARACTERIZED IN THAT said path inhibits the velocity of propogation of electromagnetic waves in said antenna and supports a standing electromagnetic wave at a predetermined resonant frequency.
Claim 3
Dependent Claim 29 words
The invention according to claim 1, FURTHER CHARACTERIZED IN THAT said conducting means has a substantially closed loop configuration and a velocity factor (V f ) less than one.
Claim 4
Dependent Claim 32 words
The invention according to claim 1, FURTHER CHARACTERIZED IN THAT said electrical conducting means comprises an electrical conductor having a substantially closed loop configuration and a non-circular shape in a single plane.
Claim 5
Dependent Claim 32 words
The invention according to claim 1, FURTHER CHARACTERIZED IN THAT said electrical conducting means comprises an electrical conductor wound more than once about an axis and having a substantially closed geometric shape.
Claim 6
Dependent Claim 22 words
The invention according to claim 1, FURTHER CHARACTERIZED IN THAT said electrical conducting means has the configuration of a multiply connected geometry.
Claim 7
Dependent Claim 24 words
The invention according to claim 1, FURTHER CHARACTERIZED IN THAT said electrical conducting means comprises an electrical conductor wound about a non-conducting support means.
Claim 8
Dependent Claim 37 words
The invention according to claim 1, FURTHER CHARACTERIZED IN THAT said electrical conducting means comprises a driven array including a driven portion and a parasitic portion, at least one of said portions having a toroidal loop configuration.
Claim 9
Dependent Claim 86 words
An antenna having a primary resonant frequency corresponding to a selected wavelength ("λ o ") CHARACTERIZED IN THAT said antenna comprises: a first conductor formed in a first helix, the centerline of said first helix being formed in a first loop, wherein the radius ("a") of said first loop, the radius ("b") of each turn of said first helix, and the number ("N") of turns of said first helix, are approximated by the formula and wherein a and b are each less than À o .
Claim 10
Dependent Claim 86 words
An antenna having a primary resonant frequency corresponding to a selected wavelength ("λ o ") CHARACTERIZED IN THAT said antenna comprises: a first conductor formed in a first helix, the centerline of said first helix being formed in a first loop, wherein the radius ("a") of said first loop, the radius ("b") of each turn of said first helix, and the number ("N") of turns of said first helix, are approximated by the formula and wherein a and b are each less than À o .
Claim 11
Dependent Claim 123 words
The invention of claim 8, CHARACTERIZED IN THAT said antenna further comprises: a second conductor formed into a second helix, the centerline axis of said second helix being formed into a second loop coincident with said first loop, wherein the radius of each turn of said second helix is the same as the radius of each turn of said first helix, wherein said first and second helixes have the same number of turns, and wherein the turns of said first helix are spaced from the turns of said second helix; and said second conductor having two ends located near each other and opposite said two ends of said first conductor, said two ends of said second conductor being feed points for second conductor.

References Cited (Backward Citations)

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US1615755A Cited
US1803620A Cited
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DE1751249U Cited
US3235805A Cited
DE1129191B Cited
US3122747A Cited
US4014028A Cited

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