Chiun Mai Communication Systems, Inc.

Chang-Hsin Ou

Ming-Yu Chou

Chia-Ming Liang

Jia-Hung Hsiao

Kuo-Lun Huang

Shu-Wei Jhang

Wen-Yuan Chen

Sheng-Chieh Liang

Cheng-I Chang

An antenna structure includes a metal frame. The metal frame includes a first gap, a second gap, a third gap, and a fourth gap to separate a first antenna, a second antenna, a third antenna, and a fourth antenna from the metal frame. The metal frame includes a fifth antenna. The first antenna, the second antenna, the third antenna, and the fourth antenna cooperatively form a first multiple-input multiple-output (MIMO) antenna to provide a 4&#xd7;4 multiple-input multiple-output function in a second frequency band. The first antenna, the second antenna, the third antenna, and the fifth antenna cooperatively form a second MIMO antenna to provide a 4&#xd7;4 multiple-input multiple-output function in a third frequency band. The first antenna and the third antenna cooperatively form a third MIMO antenna to provide a 2&#xd7;2 multiple-input multiple-output function in a first frequency band.

Antenna structure

An antenna structure includes a housing, a first connecting portion, a matching unit, a second connecting portion, and a first switching circuit. The housing defines a slot, a first gap, and a second gap. The housing is divided into a first portion and a second portion by the slot, the first gap, and the second gap. The second portion is grounded. One end of the first connecting portion electrically connected to the first portion and another end of the first connecting portion electrically connected to a feed point through the matching unit. The first portion is divided into a first radiating portion and a second radiating portion by the first connecting portion. One end of the second connecting portion is electrically connected to the first radiating portion and another end of the second connecting portion is grounded through the first switching circuit.

Antenna structure and wireless communication device using same

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Taipei, Taiwan

Chang-Hsin Ou