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AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsYasuhiro Notohara, Shinichiro Kaneko, Shoichi Shimizu, Koji Yoshida
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The invention presents an antenna element capable of attenuating electric far filed while suppressing attenuation of magnetic near field of electromagnetic field radiated from loop antenna as an application example of antenna element, and a loop antenna and a communication control apparatus of wireless communications medium using the same. The antenna element of the invention comprises a conductor, and a conductive electromagnetic shield disposed on its surface by way of an insulator. The conductive electromagnetic shield has a ground contact, a lead portion, and a plurality of branches, and it is composed so as to determine uniquely the route from an arbitrary point of branches to the ground contact by way of the lead portion.
An antenna element comprising a conductor, and a conductive electromagnetic shield disposed on its surface by way of an insulator, wherein the conductive electromagnetic shield has a ground contact, a lead portion, and a plurality of branches, and it is composed so as to determine uniquely the route from an arbitrary point of branches to the ground contact by way of the lead portion.
An antenna element comprising a conductor, and a conductive electromagnetic shield disposed on its surface by way of an insulator, wherein the conductive electromagnetic shield has a ground contact, a lead portion, and a plurality of branches, and the plurality of branches are electrically connected so as to form an open loop and connected to the ground contact by way of the lead portion.
A loop antenna including an antenna element comprising a conductor, and a conductive electromagnetic shield disposed on its surface by way of an insulator, wherein the conductive electromagnetic shield has a ground contact, a lead portion, and a plurality of branches, and the plurality of branches are electrically connected so as to form an open loop and connected to the ground contact by way of the lead portion, said antenna element formed in a loop shape.
A communication control apparatus of wireless communication medium including a loop antenna including an antenna element having a conductor, and a conductive electromagnetic shield disposed on its surface by way of an insulator, wherein the conductive electromagnetic shield has a ground contact, a lead portion, and a plurality of branches, and the plurality of branches are electrically connected so as to form an open loop and connected to the ground contact by way of the lead portion, said antenna element formed in a loop shape, and read/write device connected to the loop antenna.
An antenna element composed by disposing a conductive comblike element on a conductor surface by way of an insulator, wherein the conductive comblike element is disposed to cover the outer circumference of the conductor surface.
An antenna element composed by disposing a conductive electromagnetic shield having a comblike shape on a conductor surface by way of an insulator, wherein the insulator is formed of an adhesive made of insulating material for adhering and disposing the conductive electromagnetic shield to the conductor surface.
A loop antenna including an antenna element formed by disposing a conductive comblike element on a conductor surface by way of an insulator, said antenna element formed in a loop shape.
A communication control apparatus of wireless communication medium comprising a loop antenna composed of an antenna element composed by disposing a conductive comblike element on a conductor surface by way of an insulator formed in a loop shape, and read/write device connected to the loop antenna.
Dependencies are inferred from the claim text.