Electrical and electromagnetic apparatuses using laminated structures having thermoplastic elastomeric and conductive layers
First Claim
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1. An electromagnetic structure comprising:
- a first conductive substrate having a first side and a second side;
a first dielectric layer having a first side and a second side, said second side of said first conductive substrate adjacent said first side of said first dielectric layer, said first dielectric layer consisting essentially of a thermoplastic elastomer with a loss tangent (tan □
) of less than about 0.2 and a sufficient, non-zero amount of a dielectric filler selected from the group, consisting of undoped ceramics, doped ceramics and mixtures thereof to provide a dielectric constant of about 1 to about 50 in the first dielectric layer;
a second conductive layer having a first side and a second side, said second side of said first dielectric layer adjacent said first side of said second conductive layer; and
feeding means for feeding said first conductive substrate.
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Abstract
Electromagnetic and electrical apparatuses use a laminate structure having a thermoplastic elastomer with variable dielectric loss as a dielectric layer. A conductive layer laminated to the thermoplastic elastomer allow use for applications such as printed circuit boards and slot antennas. Additional conductive and dielectric layers still allow use as a printed circuit board as well as other antenna structures. Some embodiments of the apparatuses disclosed exhibit many desired properties, such as flexibility, conformability and weatherability.
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Citations
24 Claims
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1. An electromagnetic structure comprising:
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a first conductive substrate having a first side and a second side; a first dielectric layer having a first side and a second side, said second side of said first conductive substrate adjacent said first side of said first dielectric layer, said first dielectric layer consisting essentially of a thermoplastic elastomer with a loss tangent (tan □
) of less than about 0.2 and a sufficient, non-zero amount of a dielectric filler selected from the group, consisting of undoped ceramics, doped ceramics and mixtures thereof to provide a dielectric constant of about 1 to about 50 in the first dielectric layer;a second conductive layer having a first side and a second side, said second side of said first dielectric layer adjacent said first side of said second conductive layer; and feeding means for feeding said first conductive substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An electromagnetic structure comprising:
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a first conductive substrate having a first side and a second side; a first dielectric substrate having a first side and a second side, said second side of said first conductive substrate adjacent said first side of said first dielectric substrate, said first dielectric substrate consisting essentially of a thermoplastic elastomer with a loss tangent (tan □
) of less than about 0.2 and about 5% to about 60% by volume of thermoplastic elastomer of a dielectric filler selected from the group consisting of undoped ceramics, doped ceramics and mixtures thereof to provide a dielectric constant of about 1 to about 50 in the dielectric substrate; andfeeding means for feeding said first conductive layer. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. An electronic display system for both visual and electromagnetic data communication, said system comprising:
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display means having visual information thereon; antenna means for electromagnetic communication, said antenna means comprising at least one dielectric substrate, said dielectric substrate consisting essentially of a thermoplastic elastomer with a loss tangent (tan □
) of less than about 0.2 and a sufficient, non-zero amount of a dielectric filler selected from the group consisting of undoped ceramics, doped ceramics and mixtures thereof to provide a dielectric constant of about 1 to about 50 in the dielectric substrate; andcoupling means for allowing coupling to said antenna means. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification