Antenna
AssigneeMurata Manufacturing Co., Ltd.
InventorsKuniaki Yosui, Hiroyuki Kubo, Hiromitsu Ito
Life of this patent
Estimating the term…
Abstract
An antenna includes antenna coil having a magnetic-material core and a coil conductor. The antenna coil is arranged toward a side of a planar conductor, such as a circuit board. Of the coil conductor, a first conductor part close to a first main face of the magnetic-material core and a second conductor part close to a second main face of the magnetic-material core are provided such that the first conductor part is not over the second conductor part in view from a line in a direction normal to the first main face or the second main face of the magnetic-material core. In addition, a coil axis of the coil conductor is orthogonal to the side of the planar conductor.
Claims11
An antenna comprising an antenna coil and a planar conductor, the antenna coil including a magnetic-material core having a first main face and a second main face and a coil conductor wound around the magnetic-material core, the antenna coil being positioned adjacent to a planar surface of the planar conductor and configured to transmit magnetic flux to, and to couple magnetically with, a reader part of a reader-writer,
- wherein the first main face of the magnetic-material core opposes the planar conductor, and
- wherein, in a plan view of the planar surface, the antenna coil being arranged such that the first main face or the second main face of the magnetic-material core is positioned along the planar conductor such that one edge of the magnetic-material core is outside a side of the planar conductor and the other edge of the magnetic-material core is inside the planar conductor, such that the antenna coil is positioned between the planar conductor and the reader part of a reader-writer.
Dependencies are inferred from the claim text.