Mobile terminal
A mobile terminal includes a metal frame including a base portion and an edge portion formed along the outer edge of the base portion, first and second cases bonded to the front and back sides of the metal frame so as to expose the edge portion to the outside, first and second waterproof layers formed between the cases and the metal frame, conductive members that operate a radiator for antennas, together with the edge portion, and are formed on one side of the second case, and feeding portions for feeding the conductive members, the feeding portions being disposed in an enclosed space formed by the waterproof layers.
1. A mobile terminal, comprising:
a plurality of antennas configured to transmit or receive wireless signals;
a first circuit board disposed at an upper portion of the mobile terminal;
a second circuit board disposed at a lower portion of the mobile terminal, wherein the first circuit board and the second circuit board are spaced apart from each other and electrically connected via a flexible printed circuit board; and
a metal frame comprising a frame upper portion and a frame lower portion configured to form an upper portion and a lower portion of the mobile terminal, respectively, wherein a portion of the metal frame is configured to operate as a ground of the plurality of antennas,
wherein the frame upper portion comprises:
a first non-metallic coupling portion;
a first edge member and a second edge member provided at the frame upper portion and configured to operate as radiators to transmit or receive wireless signals, wherein the first edge member and the second edge member are configured to operate at different frequency bands and are isolated from each other by a portion of the first non-metallic coupling portion; and
a first slit defined between the first edge member and the second edge member,
wherein the first circuit board is disposed at the frame upper portion and configured to feed the first edge member and the second edge member,
wherein the frame lower portion comprises at least two antennas,
wherein the second circuit board is disposed at the frame lower portion and configured to feed the at least two antennas, and
wherein the first edge member, the second edge member, and the first slit are configured to form an outer appearance of the mobile terminal.
2. The mobile terminal of claim 1 , wherein the at least two antennas provided at the frame lower portion correspond to a third edge member and a fourth edge member of the frame lower portion configured to operate as radiators to transmit or receive wireless signals, and
wherein the third edge member and the fourth edge member are configured to operate at different frequency bands and are isolated from each other by a portion of a second non-metallic coupling portion disposed at the frame lower portion.
3. The mobile terminal of claim 2 , wherein one of the first, second, third, or fourth edge members comprises a detachably coupled metallic cover.
4. The mobile terminal of claim 2 , wherein:
the plurality of antennas comprises conductive members corresponding to the plurality of antennas; and
at least one of the conductive members is electrically correspondingly coupled to at least one edge member of the first, second, third, and fourth edge members.
5. The mobile terminal of claim 4 , wherein another at least one of the conductive members is capacitively correspondingly coupled to another at least one edge member of the first, second, third, and fourth edge members.
6. The mobile terminal of claim 2 , wherein the metal frame and the first and second non-metallic coupling portions are integrated by plastic overmolding.
7. The mobile terminal of claim 1 , wherein two antennas of the plurality of antennas are configured to operate at LTE frequency bands in a Multiple-Input Multiple-Output (MIMO) mode.
8. The mobile terminal of claim 1 , wherein two antennas of the plurality of antennas are configured to operate at LTE frequency bands in a diversity mode.
9. The mobile terminal of claim 1 , further comprising feeding portions and corresponding feeding connectors coupled to the first circuit board, wherein each feeding connector electrically couples a corresponding feeding portion with a corresponding conductive member of a corresponding antenna of the plurality of antennas.
10. The mobile terminal of claim 1 , wherein:
the plurality of antennas comprises a first antenna and a second antenna;
a first feeding portion of the first antenna is electrically coupled or capacitively coupled to the first edge member to directly or indirectly feed the first antenna with electricity; and
a second feeding portion of the second antenna is electrically coupled or capacitively coupled to the second edge member to directly or indirectly feed the second antenna with electricity.
11. The mobile terminal of claim 10 , wherein:
the plurality of antennas comprises a third antenna and a fourth antenna;
a third feeding portion of the third antenna is electrically coupled or capacitively coupled to the third edge member to directly or indirectly feed the third antenna with electricity; and
a fourth feeding portion of the fourth antenna is electrically coupled or capacitively coupled to the fourth edge member to directly or indirectly feed the fourth antenna with electricity.
12. The mobile terminal of claim 1 , further comprising a thermally conductive member contacting the metal frame and configured to transfer heat to the frame generated by one or more electronic elements disposed at the first circuit board.
13. The mobile terminal of claim 1 , wherein a main radiation area of the mobile terminal is outwardly directed in a lengthwise direction of the mobile terminal from an upper portion of the mobile terminal or a lower portion of the mobile terminal.