Antenna and electronic device including same

1. An electronic device comprising:

a housing including a side member forming at least a part of a side surface of the electronic device, the side member including a conductive portion and a non-conductive portion;

an antenna structure arranged in the housing, wherein the antenna structure includes:

a substrate including a first substrate surface facing a first direction and a second substrate surface facing opposite the first substrate surface, the substrate being disposed in the housing such that the first substrate surface thereof faces the side surface; and

at least one antenna element arranged on the substrate to form a beam pattern in the first direction in which the first substrate surface is oriented;

a conductive plate disposed on the conductive portion to support the substrate in an inner space of the housing, the conductive plate including a first support portion arranged to be in contact with the second substrate surface of the substrate and a plurality of first slits formed in the first support portion, the plurality of first slits being formed at a position where the plurality of first slits at least partially overlap the at least one antenna element when the first substrate surface is viewed from above; and

a wireless communication circuit configured to transmit or receive a wireless signal in a predetermined frequency band through the at least one antenna element,

wherein the at least one antenna element is arranged to at least partially overlap the non-conductive portion of the side member when the housing is viewed from outside.

2. The electronic device of claim 1 , wherein the at least one antenna element includes at least one feeding portion, and

the plurality of first slits is formed to have a length in a direction perpendicular to a polarization direction through the at least one feeding portion.

3. The electronic device of claim 2 , wherein the at least one feeding portion includes a first feeding portion disposed on a first virtual line passing through a center of the at least one antenna element and a second feeding portion disposed on a second virtual line passing through the center and orthogonal to the first virtual line.

4. The electronic device of claim 3 , wherein the plurality of first slits is perpendicular to the polarization direction of the first feeding portion, and

the wireless communication circuit is configured to form a vertically polarized wave through the first feeding portion.

5. The electronic device of claim 1 , wherein the at least one antenna element includes a plurality of antenna elements arranged at an interval, and

the plurality of first slits is arranged at a position at which the first slits at least partially overlap the plurality of antenna elements, respectively, when the first substrate surface is viewed from above.

6. The electronic device of claim 1 , wherein the substrate includes a substrate side-surface surrounding a space between the first substrate surface and the second substrate surface, wherein the substrate side-surface includes:

a first substrate side-surface having a first length and corresponding to the housing;

a second substrate side-surface extending vertically from the first substrate side-surface and having a second length shorter than the first length;

a third substrate side-surface extending from the second substrate side-surface parallel to the first substrate side-surface and having the first length; and

a fourth substrate side-surface extending from the third substrate side-surface parallel to the second substrate side-surface and having the second length,

wherein the conductive plate includes a second support portion extending from the first support portion and arranged to face the first substrate side-surface,

wherein the second support portion includes a plurality of second slits, and

wherein the plurality of second slits is arranged at a position at which the second slits at least partially overlap the at least one antenna element when the first substrate side-surface is viewed from the outside.

7. The electronic device of claim 6 , wherein the conductive plate includes:

a third support portion extending from the first support portion, facing the second substrate side-surface, and including a plurality of third slits;

a fourth support portion extending from the first support portion, facing the third substrate side-surface, and including a plurality of fourth slits; and

a fifth support portion extending from the first support portion, facing the fourth substrate side-surface, and including a plurality of fifth slits.

8. The electronic device of claim 1 , wherein the wireless communication circuit is arranged on the second substrate surface.

9. The electronic device of claim 8 , further comprising:

a protection member arranged on the second substrate surface of the substrate to at least partially surround the wireless communication circuit.

10. The electronic device of claim 9 further comprising:

a shield layer arranged on the protection member.

11. The electronic device of claim 1 , wherein the side surface is arranged to be at least partially visible from the outside of the electronic device, and

the substrate is arranged in the inner space of the housing such that a beam pattern is formed in the first direction in which the side surface of the housing is oriented.

12. The electronic device of claim 1 , wherein the housing includes:

a front plate;

a rear plate facing away from the front plate; and

the side member surrounding the inner space between the front plate and the rear plate,

wherein the electronic device further comprises:

a display arranged in the inner space and arranged to be at least partially visible from the outside of the electronic device through the front plate.

13. The electronic device of claim 12 , wherein the substrate is arranged in the inner space such that the beam pattern is formed in the first direction in which the side member is oriented.

14. The electronic device of claim 12 , wherein the substrate is arranged in the inner space such that the beam pattern is formed in a direction in which the rear plate is oriented.

15. The electronic device of claim 1 , wherein the wireless communication circuit is configured to transmit and/or receive a wireless signal in a frequency band ranging from 3 GHz to 100 GHz via the at least one antenna element.