CPC H01Q 5/335 (2015.01) [H01Q 9/0414 (2013.01); H04B 1/0483 (2013.01)] | 20 Claims |
1. An antenna apparatus comprising:
a first antenna; and
a second antenna usable in a communication frequency band different from a communication frequency band in which the first antenna is used; wherein
the first antenna includes a first radiating element, a second radiating element, a phase adjustment circuit, a first coil, and a second coil;
the first radiating element and the second radiating element include parallel extending portions;
the first coil is connected between the first radiating element and a connection portion of a first feed circuit;
the second coil is connected between the second radiating element and a ground conductor;
the phase adjustment circuit is connected to the second coil;
the first coil and the second coil are provided in a single coupling element; and
the phase adjustment circuit adjusts a phase difference between a current flowing through the first radiating element and a current flowing through the second radiating element to greater than or equal to about 90 degrees and less than about 180 degrees in a communication frequency band of the second antenna.
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