The present invention involves an antenna device used in wireless communication devices and this device. Among them, the circuit antenna component (18) includes: the first part of the first plane and extending a length in it (20), provided in it, provided in it, provided in it, provided in it, provided in it, provided in it, provided in it, provided in it, provided in it, provided in it, provided in it, provided in it, provided in it, provided in it, provided in it, provided in it.The second part of the first plane and extending the second part (22) that extends a length of length, which provides the third part of the third part of the second plane that is basically parallel to the first plane.(24), and the fourth part (26) and fifth (28) that will be provided in the first and second planes.Each antenna has a three -dimensional structure, which has a general two -dimensional extension part of at least one of the first and second planes.The second part is the same as the same straight line extension as the first part or has a curve part, which is the continuation of the curve part in the first part.As a result, a small broadband band antenna that requires small ground planes is obtained.