US 9,812,764 B2
Antenna device and wireless device
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 Nov. 30, 2016, as Appl. No. 15/364,371.
Application 15/364,371 is a continuation of application No. 14/085,830, filed on Nov. 21, 2013, granted, now 9,543,642.
Application 14/085,830 is a continuation of application No. PCT/JP2012/072849, filed on Sep. 7, 2012.
Claims priority of application No. 2011-196972 (JP), filed on Sep. 9, 2011.
Prior Publication US 2017/0084980 A1, Mar. 23, 2017
This patent is subject to a terminal disclaimer.
Int. Cl. H01Q 1/38 (2006.01); H01Q 1/22 (2006.01); H01Q 7/00 (2006.01); G06K 19/077 (2006.01); H01Q 1/50 (2006.01)
CPC H01Q 1/2225 (2013.01) [G06K 19/07794 (2013.01); H01Q 1/38 (2013.01); H01Q 1/50 (2013.01); H01Q 7/00 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An antenna device comprising:
an antenna element including a coupling portion; and
a feed element including a first coil conductor and a second coil conductor, the first coil conductor and the second coil conductor being arranged such that magnetic flux generated in the first coil conductor and the second coil conductor constitutes a closed magnetic circuit; wherein
the antenna device is a HF-band antenna device; and
an opening of the first coil conductor and an opening of the second coil conductor of the feed element do not overlap with the antenna element in a planar view of coil surfaces of the first and second coil conductors, and the first coil conductor and the second coil conductor of the feed element are magnetically coupled to the coupling portion of the antenna element.