US 11,901,611 B2
Antenna device and electronic apparatus
Takafumi Nasu, Nagaokakyo (JP); and Kenichi Ishizuka, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Jun. 24, 2021, as Appl. No. 17/356,568.
Application 17/356,568 is a continuation of application No. PCT/JP2020/030806, filed on Aug. 13, 2020.
Claims priority of application No. 2019-170614 (JP), filed on Sep. 19, 2019.
Prior Publication US 2021/0320397 A1, Oct. 14, 2021
Int. Cl. H01Q 5/378 (2015.01); H01Q 1/24 (2006.01); H01Q 1/48 (2006.01); H01Q 7/00 (2006.01)
CPC H01Q 1/243 (2013.01) [H01Q 1/48 (2013.01); H01Q 5/378 (2015.01); H01Q 7/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An antenna device comprising:
a first radiating element;
a second radiating element;
a first coil including a first end connected to a power supply circuit and a second end connected to the first radiating element;
a second coil including a first end connected to the second radiating element and a second end connected to ground and is electromagnetically coupled to the first coil;
a first phase adjusting element including a first end connected to the power supply circuit and a second end connected to the ground to adjust a phase difference between a first current flowing through the first radiating element and a second current flowing through the second radiating element; and
a second phase adjusting element including a first end connected to the first end of the second coil and a second end connected to the ground to adjust the phase difference between the first current flowing through the first radiating element and the second current flowing through the second radiating element.