Electronic device having FPCB

1. An electronic device comprising:

a housing including at least a part of a lateral surface of the electronic device;

a printed circuit board (PCB) disposed in the housing;

at least one wireless communication circuit disposed on the PCB;

a first antenna module including at least one antenna disposed in a first region inside the housing;

a second antenna module including at least one antenna disposed in a second region inside the housing;

a third antenna module including at least one antenna disposed in a third region inside the housing;

a first flexible printed circuit board (FPCB) connecting the first antenna module to the at least one wireless communication circuit; and

a second FPCB connecting the second antenna module and the third antenna module to the at least one wireless communication circuit,

wherein the second FPCB includes:

a first connector disposed on the PCB and electrically connected to the at least one wireless communication circuit;

a second connector coupled with a second joint and electrically connected to the second antenna module for transmitting and receiving first signals;

a third connector coupled with a third joint and electrically connected to the third antenna module for transmitting and receiving second signals;

a coupler connecting the first connector, the second connector, and the third connector;

a first signal line connecting a first terminal of the first connector and the second connector; and

a second signal line connecting a second terminal of the first connector and the third connector.

2. The electronic device of claim 1 , wherein:

the first connector of the second FPCB includes a first terminal group that includes a plurality of terminals and a second terminal group that includes a plurality of terminals,

wherein the first terminal of the second terminal group is connected to the second connector through the first signal line of the coupler,

wherein the second terminal of the first terminal group is connected to the third connector through the second signal line of the coupler, and

wherein a third terminal of the second terminal group is connected to the second connector through a power transmission line of the coupler.

3. The electronic device of claim 2 , wherein the third terminal of the second terminal group is closer to a center of the first connector than the first terminal of the second terminal group.

4. The electronic device of claim 2 , wherein:

The third terminal of the second terminal group and the second terminal of the first terminal group are spaced apart by a designated distance or more; and

wherein a region in the space between the third second terminal of the second terminal group and the second terminal of the first terminal group includes a dielectric or a non-conductive material.

5. The electronic device of claim 2 , wherein the first signal line has a shorter length than a length of the power transmission line.

6. The electronic device of claim 2 , wherein the power transmission line and the second signal line are spaced apart by a designated distance or more.

7. The electronic device of claim 6 , wherein a spaced region between the power transmission lines and the second signal line includes a dielectric or a non-conductive material.

8. The electronic device of claim 6 , wherein the power transmission line is closer to a spaced region between the power transmission line and the second signal line than the first signal line.

9. The electronic device of claim 1 , wherein the coupler includes:

a first flexible section extending from the first connector;

a first rigid section extending from the first flexible section;

a second flexible section extending from the first rigid section to the second connector; and

a third flexible section extending from the first rigid section to the third connector.

10. The electronic device of claim 1 , wherein the first antenna module and the second antenna module each include a patch antenna.

11. The electronic device of claim 1 , wherein the at least one wireless communication circuit is configured to receive a wireless signal having a frequency in a range of about 6 GHz to 100 GHz through the first antenna module and the second antenna module.

12. An electronic device comprising:

a housing including at least a part of a lateral surface of the electronic device;

a printed circuit board (PCB) disposed in the housing;

at least one wireless communication circuit disposed on the PCB;

a first antenna module including at least one antenna disposed in a first region inside the housing;

a second antenna module including at least one antenna disposed in a second region inside the housing;

a third antenna module including at least one antenna disposed in a third region inside the housing;

a first flexible printed circuit board (FPCB) connecting the first antenna module to the at least one wireless communication circuit; and

a second FPCB connecting the second antenna module and the third antenna module to the at least one wireless communication circuit,

wherein the second FPCB includes:

a first connector disposed on the PCB and electrically connected to the at least one wireless communication circuit;

a second connector coupled with a second joint and electrically connected to the second antenna module;

a third connector coupled with a third joint and electrically connected to the third antenna module; and

a coupler connecting the first connector, the second connector, and the third connector,

wherein

at least a part of a lateral surface of the electronic device includes a conductive region;

the third antenna module is electrically connected to the conductive region; and

the at least one wireless communication circuit is configured to supply power to the conductive region to receive an RF signal.