Shortened antenna having coaxial lines as its elements
First Claim
1. An antenna comprising at least one fundamental antenna element composed of a coaxial line having a length corresponding to one-half or one-quarter wavelength of utilization waves and divided into a plurality of discrete segments, means connecting said segments in series with the inner conductor of one of the adjoining segments being connected to the outer conductor of the other of said adjoining segments and the outer conductor of said one adjoining segment being connected to the inner conductor of said other adjoining segment, said connecting means forming joints between successive segments and said antenna segments being folded at said joints between successive segments, whereby in-phase unbalanced currents flow in the adjoining segments.
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Abstract
A modified line antenna, having reduced length and space of occupancy, each element of which is divided into a plurality of segments which are made of coaxial lines connected in series with a novel inventive technique and folded into a short and compact structure at the points of connection without any loss of overall efficiency.
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Citations
3 Claims
- 1. An antenna comprising at least one fundamental antenna element composed of a coaxial line having a length corresponding to one-half or one-quarter wavelength of utilization waves and divided into a plurality of discrete segments, means connecting said segments in series with the inner conductor of one of the adjoining segments being connected to the outer conductor of the other of said adjoining segments and the outer conductor of said one adjoining segment being connected to the inner conductor of said other adjoining segment, said connecting means forming joints between successive segments and said antenna segments being folded at said joints between successive segments, whereby in-phase unbalanced currents flow in the adjoining segments.
Specification
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- Resources
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Current AssigneeHiroki Tanaka
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Original AssigneeHiroki Tanaka
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InventorsTanaka, Hiroki
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Primary Examiner(s)Lieberman, Eli
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Application NumberUS06/253,195Time in Patent Office862 DaysField of Search343/790, 343/791, 343/845, 343/846, 343/806US Class Current343/790CPC Class CodesH01Q 11/04 with parts bent, folded, sh...H01Q 11/08 Helical antennasH01Q 11/10 Logperiodic antennas H01Q11...H01Q 21/08 the units being spaced alon...H01Q 9/16 with feed intermediate betw...H01Q 9/42 with folded element, the fo...
