US 9,812,766 B2
Antenna device and communication apparatus
Noboru Kato, Nagaokakyo (JP)
Assigned to Murata Manufacturing Co., Ltd., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo-shi, Kyoto-fu (JP)
Filed on Sep. 16, 2015, as Appl. No. 14/855,597.
Application 14/855,597 is a continuation of application No. PCT/JP2014/052023, filed on Jan. 30, 2014.
Claims priority of application No. 2013-061678 (JP), filed on Mar. 25, 2013.
Prior Publication US 2016/0006108 A1, Jan. 7, 2016
Int. Cl. H01Q 1/24 (2006.01); H01Q 1/22 (2006.01); H01Q 7/06 (2006.01); H01Q 7/08 (2006.01); H04M 1/02 (2006.01); G06K 7/10 (2006.01); H01Q 7/00 (2006.01)
CPC H01Q 1/243 (2013.01) [G06K 7/10336 (2013.01); H01Q 1/2216 (2013.01); H01Q 7/00 (2013.01); H01Q 7/06 (2013.01); H01Q 7/08 (2013.01); H04M 1/026 (2013.01); H04M 2250/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An antenna device comprising:
a metal casing including a cutout portion penetrating in a thickness direction and extending from an outer edge portion toward an inner side;
a coil antenna magnetically coupling with the metal casing by a magnetic flux passing through the cutout portion; and
a conductive member provided in a portion or an entirety of the cutout portion and including an insulating thin film provided on at least a portion thereof which is in contact with the metal casing; wherein
when seen in a plan view of the conductive member, the coil antenna includes a portion that does not overlap the conductive member.