Antenna device and communication terminal apparatus

Patent metadata

Field	Value
Publication number	US-9166291-B2
Application number	US-201313761195-A
Country	US
Kind code	B2
Filing date	Feb 7, 2013
Priority date	Oct 12, 2010
Publication date	Oct 20, 2015
Grant date	Oct 20, 2015

Abstract

An antenna device includes an antenna coil including a first conductive pattern disposed on a first major surface of a magnetic sheet, a second conductive pattern disposed on a first major surface of a non-magnetic sheet, and an interlayer conductor connecting the first conductive pattern and second conductive pattern. The antenna coil including the first conductive pattern and second conductive pattern defines a spiral or substantially spiral pattern. The antenna device is a resin multilayer structure in which its base body is a laminate of the magnetic layer and non-magnetic layer and the predetermined patterns are disposed inside and outside the laminate.

First claim

What is claimed is:

1. An antenna device comprising:
a plurality of layers including at least a magnetic layer;
at least one first conductive pattern having a half-loop shape or a linear shape, including one or more layers, and being adjacent to a first major surface of the magnetic layer;
at least one second conductive pattern having a half-loop shape or a linear shape, including one or more layers, and being adjacent to a second major surface of the magnetic layer;
an inte…

Assignees

• Murata Manufacturing Co

Inventors

• Kato Noboru
• Sasaki Jun
• Ishino Satoshi

Classifications

• H10W90/724

  Electricity · mapped topic

• H01Q9/27

  Electricity · mapped topic

• H01Q7/06 Primary

  Electricity · mapped topic

• H01Q1/38

  Electricity · mapped topic

• H01Q1/243

  Electricity · mapped topic