Patent ID: 11916293
Assignee: DELTA ELECTRONICS, INC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A wireless communication device, comprising:
a substrate, comprising a first surface and a second surface;
at least two antenna units, disposed on the first surface, positioned adjacent and perpendicular to each other, wherein
the at least two antenna units comprises at least two radiation parts, at least two feeding parts and at least two feeding lines, and the at least two radiation parts comprises a first radiation part, a second radiation part, a third radiation part, and
each of the at least two feeding lines includes a first transmission line and a second transmission line that are perpendicular and connected to each other, wherein the first transmission lines of the at least two feeding lines are respectively connected to the at least two radiation parts via the at least two feeding parts; and

at least one metal ground, disposed on the second surface, wherein
at least one isolation slot is disposed on the at least one metal ground, and which position respectively corresponds between projections of the adjacent two of the at least two antenna units toward the at least one metal ground,
the at least one metal ground has at least two edges, wherein adjacent two of the at least two edges are perpendicular to each other, one of the adjacent two of the at least two edges is perpendicular to projections of the first radiation part and the third radiation part toward the at least one metal ground, and the other one of the adjacent two of the at least two edges is perpendicular to projection of the second radiation part toward the at least one metal ground, and
at least two resonance slots are disposed on the at least one metal ground, and which position corresponds between projection of the second transmission line of the at least two feeding lines toward the metal ground and the corresponding one of the at least two edges,

wherein the at least one isolation slot is rectangular, and shape of the at least two resonance slots is L shape, wherein length of the at least one isolation slot and length of the at least two resonance slots are a quarter wavelength of the center frequency of an operating frequency band of the at least two antenna units, and length of the at least two edges are a half wavelength of the center frequency of the operating frequency band of the at least two antenna units.