| 摘要 |
A magnetic core member, an antenna module, and a portable communication terminal having this, which have a configuration capable of satisfying enhancement of communication characteristics of antenna coils as well as their sufficient electromagnetic shielding function from a shield plate. A magnetic core member ( 4 ) is disposed between an antenna substrate having antenna coils ( 11 ), ( 12 ) formed therein and a conductive shield plate ( 3 ), and is formed by filling an insulating material ( 30 ) with a magnetic powder ( 31 ). The magnetic core member ( 4 ) has a two-layered structure including a first layer ( 4 A) and a second layer ( 4 B), thereby making a filling rate of the magnetic powder ( 31 ) in the first layer ( 4 A) be lower than that of the magnetic powder ( 31 ) in the second layer ( 4 B) so that a first surface ( 4 a) on a side opposed to the antenna substrate ( 2 ) and a second surface ( 4 b) on a side opposed to the shield plate ( 3 ) have magnetic properties different from each other.
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