Antenna and method for manufacturing the same, and stretchable system including the same

Abstract

The present invention provides an antenna including a composite substrate having elasticity and dielectricity, a ground panel formed on a bottom surface of the composite substrate and grounded, and a patch formed on an upper surface of the composite substrate and resonating at a frequency within a reference range, wherein when the composite substrate and the patch are elastic, the dielectric constant of the composite substrate changes and the frequency of the patch is maintained within the reference range.

Claims

[Claim 1] A composite substrate having stretchability and dielectric properties, A ground panel formed on the bottom surface of the composite substrate and grounded, The composite substrate includes a patch formed on the upper surface of the composite substrate that resonates at a reference range of frequencies, When the composite substrate and the patch expand and contract, the dielectric constant of the composite substrate becomes variable. An antenna characterized in that the frequency of the patch is maintained within the reference range. [Claim 2] At least one of the ground panel and the patch is made of a stretchable metallic conductive material. The antenna according to claim 1, characterized in that the stretchable metallic conductive material includes silver, copper, gold, or aluminum. [Claim 3] When the composite substrate and the patch expand or contract, The dielectric constant is variable by the square of the length being expanded or contracted. The antenna according to claim 1, characterized in that the frequency is maintained within the reference range. [Claim 4] The composite substrate includes dielectric clusters of a predetermined shape formed from dielectric powder, When the composite substrate expands or contracts in the direction of elongation, the predetermined shape of the dielectric cluster changes such that the number of dielectric powder particles per unit volume of the composite substrate decreases. The antenna according to claim 1, characterized in that the dielectric constant of the composite substrate decreases linearly. [Claim 5] The composite substrate has the variable dielectric constant range within an expansion range of 0.1% or more to 30% or less. The antenna according to claim 1, characterized in that the variable dielectric constant range is 1.5 or more and 7.5 or less. [Claim 6] The antenna according to claim 1, characterized in that the frequency of the patch is maintained within the reference range within an expansion range of 0.1% or more to 30% or less. [Claim 7] The antenna according to claim 1, characterized in that the composite substrate has a thermal conductivity of 0.1 W / mk or more and 10 W / mk or less. [Claim 8] The composite substrate includes a stretchable polymer matrix formed of a stretchable polymer having elastic properties. The aforementioned stretchable polymer is a silicon-based material, The antenna according to claim 1, characterized in that the silicon-based material comprises at least one selected from materials containing ecoflex, PDMS (polydimethylsiloxane), or SEBS (Styrene-Ethylene-Butylene-Styrene). [Claim 9] The dielectric powder is a metal oxide-based material, The antenna according to claim 4, characterized in that the dielectric powder is at least one selected from metal oxide-based materials including barium titanate, strontium titanate, and aluminum oxide. [Claim 10] A step of preparing a composite substrate having stretchability and dielectric properties, The steps include forming a ground panel for grounding on the bottom surface of the composite substrate, The step includes forming a patch on the upper surface of the composite substrate that resonates at a reference range of frequencies, When the composite substrate and the patch expand or contract, An antenna manufacturing method characterized in that the dielectric constant of the composite substrate is variable, and the frequency of the patch is maintained within the reference range. [Claim 11] In the step of forming the ground panel, in the step of forming the ground panel and the patch, at least one of the patches is made of an elastic metallic conductive material. The aforementioned stretchable metallic conductive material includes silver, copper, gold, or aluminum. The step of forming the ground panel further includes the step of providing an ink containing the stretchable metallic conductive material to the bottom surface of the composite substrate to form the ground panel, The antenna manufacturing method according to claim 10, characterized in that the step of forming the patch further includes the step of forming the stretchable metallic conductive material on the upper surface of the composite substrate in a predetermined shape pattern. [Claim 12] The step of preparing the composite substrate is: A step of dispersing a stretchable polymer having elasticity in a solvent to produce a source solution, The steps include: mixing dielectric powder having dielectric properties into the aforementioned source solution to produce a dielectric source; The steps include providing the dielectric source with a catalyst that generates an attractive force between the dielectric powders to form a dielectric cluster from the dielectric powders, The steps include curing the dielectric source on which the dielectric clusters are formed to produce the composite substrate in which the dielectric clusters are dispersed in a stretchable polymer matrix formed from the stretchable polymer, The antenna manufacturing method according to claim 10, characterized in that, in the step of forming the dielectric cluster, the catalyst is provided to the dielectric source by a drip method, and the catalyst is water. [Claim 13] A stretchable system characterized by including the antenna described in claim 1.

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