Electronic device having antennas

1. An electronic device, comprising:

a plurality of frames including a first frame, a second frame slidable in a first direction relative to the first frame, and a third frame located on a rear surface of the second frame and movable in the first direction relative to the second frame, wherein one of the first frame and the third frame is configured as a metal frame formed on a side surface of the electronic device and having a plurality of metal rims;

a flexible display having a first region coupled to a front surface of the first frame, a second region coupled to the third frame, and a third region located between the first region and the second region; and

an antenna implemented as one of the plurality of metal rims, and connected to a feeding unit at one point and connected to a ground through a switching unit at another point to radiate signals through different bands.

2. The electronic device of claim 1 , wherein the antenna is disposed on a lower region of the electronic device,

wherein the electronic device further comprises a first antenna disposed on one side region thereof, and

wherein the first antenna is configured to operate in a first band of a Fourth Generation (4G) communication system, and the antenna is configured to operate in a second band higher than the first band and a third band higher than the second band.

3. The electronic device of claim 1 , wherein the antenna is configured such that one end portion and another end portion of a conductive member, as one of the plurality of metal rims, are connected to the ground, and the one end portion of the conductive member is connected to the ground through the switching unit.

4. The electronic device of claim 2 , wherein the antenna is configured to operate in the first to third bands and a Sub-6 band of a fifth generation (5G) communication system by way of switching output terminals of the switching unit.

5. The electronic device of claim 4 , wherein the antenna comprises:

the conductive member; and

a metal pattern formed on a circuit board to extend from the feeding unit by a predetermined length at one point of the conductive member, and

wherein the one point of the metal pattern is connected to a ground of the circuit board.

6. The electronic device of claim 5 , wherein the switching unit is configured as an SP4T switch having first to fourth output terminals, and

wherein the electronic device further comprises a transceiver circuit operably coupled to the antenna and configured to control the switching unit.

7. The electronic device of claim 6 , wherein the transceiver circuit is configured to control the switching unit to connect the first output terminal to the ground through a first impedance matching circuit, such that the antenna operates in the Sub-6 band, and

control the switching unit to connect the second to fourth output terminals to the ground through second to fourth impedance matching circuits, respectively, such that the antenna operates in different bands.

8. The electronic device of claim 7 , wherein the transceiver circuit is configured to control the switching unit to connect the second output terminal to the ground through the second impedance matching circuit, such that the antenna operates in a first sub-band within the second band, and

control the switching unit to connect the third output terminal to the ground through the third impedance matching circuit, such that the antenna operates in a second sub-band within the second band, and

wherein the second sub-band is a frequency band higher than the first sub-band.

9. The electronic device of claim 8 , wherein the transceiver circuit is configured to control the switching unit to connect the fourth output terminal to the ground through the fourth impedance matching circuit, such that the antenna operates in the third band.

10. The electronic device of claim 9 , wherein the antenna is a second antenna spaced apart from one end portion of the first antenna, and disposed on the lower region, and

wherein the electronic device further comprises:

a third antenna spaced apart from another end portion of the first antenna and disposed on the one side region; and

a processor operably coupled to the transceiver circuit and configured to perform an E-UTRAN NR Dual Connectivity (EN-DC) operation through the first to third antennas.

11. The electronic device of claim 10 , further comprising a fourth antenna spaced apart from one end portion of the second conductive member adjacent to the third antenna and disposed on the one side region,

wherein the processor controls the transceiver circuit to perform Multiple-Input and Multiple-Output (MIMO) and Carrier Aggregation (CA) through the first to fourth antennas.

12. The electronic device of claim 11 , further comprising:

a fifth antenna spaced apart from one end portion of the fourth antenna and disposed on the one side region and an upper region of the electronic device; and

a sixth antenna spaced apart from one end portion of the fifth antenna and disposed on the upper region,

wherein the processor controls the transceiver circuit to perform diversity in a Long-Term Evolution (LTE) communication system through the fifth and sixth antennas.

13. The electronic device of claim 12 , further comprising:

a seventh antenna configured to operate in the 4G communication system through a first feeding unit connected to one point of a second conductive member spaced apart from the one end portion of the fourth antenna; and

an eighth antenna configured to operate in the 5G communication system through a second feeding unit connected to another point of the second conductive member,

wherein the seventh antenna and the eighth antenna share the second conductive member as the same radiator.

14. The electronic device of claim 10 , wherein the third region of the flexible display located in a first direction of the first region is widened in area and the flexible display is switched from a first state into a second state, in case where the second frame moves in the first direction relative to the first frame,

wherein the antenna is disposed on a fixed portion of the electronic device corresponding to the rollable device, and

wherein a driving unit that allows a display region of the rollable device to be switched between the first state and the second state is disposed on another side region of the rollable device.

15. The electronic device of claim 14 , wherein the processor controls the transceiver circuit such that one of the first to fourth output terminals of the switching unit is connected to the ground in case where the display region of the rollable device is switched from the first state into the second state.

16. The electronic device of claim 14 , wherein the processor determines a resource region allocated through a Physical Downlink Control Channel (PDCCH), and

controls the transceiver circuit such that the first output terminal of the switching unit is connected to the ground through the first impedance matching circuit in case where resources of a 5G Sub-6 band have been allocated.

17. The electronic device of claim 16 , wherein the processor controls the transceiver circuit such that one of the second to fourth output terminals of the switching unit is connected to the ground through one of the second to fourth impedance matching circuits according to a frequency band of allocated resources in case where the resources of a 4G LTE band have been allocated.

18. The electronic device of claim 16 , wherein the processor controls the transceiver circuit such that the first to fourth output terminals of the switching unit are open with respect to the ground in case where the display region of the rollable device is switched from the second state into the first state.

19. The electronic device of claim 5 , wherein a Radio Frequency (RF) transmission line of the circuit board is connected to the conductive member through a feeding clip, and

wherein a ground pad of the circuit board configured to be connected to the output terminals of the switching unit is connected to a cover frame through a contact clip.

20. The electronic device of claim 6 , wherein the metal pattern is formed on the circuit board so that the antenna operates in the 5G Sub-6 band, and

wherein the antenna operates in the Sub-6 band when one point of the metal pattern is electrically connected to the first output terminal of the switching unit and the first output terminal of the switching unit is connected to the ground through the first impedance matching circuit.