Patent ID: 11923624
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An antenna device comprising:
a first antenna; and
a second antenna; wherein
the first antenna includes a coupling element including a primary coil and a secondary coil, a first radiating element connected to the primary coil, a second radiating element connected to the secondary coil, and a phase adjuster connected to the second radiating element;
the second antenna includes a third radiating element;
a first feeding circuit is connected to a primary coil side;
a second feeding circuit is connected to the third radiating element; and
the phase adjuster is provided to adjust a phase difference between signals of the first radiating element and the second radiating element in a communication band of the second antenna to be within a range of about 180°±45°.