Separable antenna and electronic device comprising same
The disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transmission rate than a 4th generation (4G) communication system such as long term evolution (LTE). An antenna module is provided. The antenna module includes a plurality of antennas, a first printed circuit board (PCB) on which the plurality of antennas are disposed, a second PCB on which one or more elements for processing a radio frequency (RF) signal are disposed, and an adhesive material for bonding the first PCB and the second PCB, wherein the first PCB includes a first metal layer, a second metal layer, a dielectric, and a coupling structure plated along the first metal layer, the second metal layer, and a via hole between the first metal layer and the second metal layer, and may be disposed to provide a coupling connection through the coupling structure of the first PCB.
1. An antenna module comprising:
a plurality of antennas;
a first printed circuit board (PCB) on which the plurality of antennas are disposed;
a second PCB on which one or more elements configured to process radio frequency (RF) signals are disposed; and
an adhesive material for coupling the first PCB and the second PCB,
wherein the first PCB comprises a first metal layer, a second metal layer, a dielectric, and a coupling structure plated along the first metal layer, the second metal layer, and a via hole between the first metal layer and the second metal layer, and
wherein the first PCB is disposed to provide coupling connection via the coupling structure of the first PCB and a coupling pad of the second PCB.
2. The antenna module of claim 1 ,
wherein the dielectric is a polyimide (PI) film configured as one layer,
wherein a first surface of the PI film is attached to the first metal layer via a first adhesive, and
wherein a second surface opposite to the first surface of the PI film is attached to the second metal layer via a second adhesive.
3. The antenna module of claim 1 , wherein the coupling structure is configured by a plurality of plating layers according to the plating.
4. The antenna module of claim 1 ,
wherein pressure corresponding to a distance between the first PCB and the second PCB is applied to the adhesive material, and
wherein a distance between the coupling structure and the coupling pad depends on thickness of the adhesive material.
5. The antenna module of claim 1 ,
wherein the dielectric comprises a first polyimide (PI) film and a second PI film,
wherein a first surface of the first PI film is attached to the first metal layer via a first adhesive,
wherein a second surface of the first PI film opposite to the first surface of the first PI film is coupled to a first surface of the second PI film via a second adhesive, and
wherein a second surface of the second PI film opposite to the first surface of the second PI film is attached to the second metal layer via a third adhesive.
6. The antenna module of claim 1 , wherein the adhesive material comprises a bonding sheet or adhesive tape.
7. The antenna module of claim 1 ,
wherein the first PCB comprises a flexible printed circuit board (FPCB), and
wherein the coupling structure comprises flexible copper clad laminate (FCCL).
8. The antenna module of claim 1 ,
wherein the first PCB comprises a rigid PCB, and
wherein the dielectric comprises pre-impregnated materials (Prepreg), copper clad laminate (CCL), or low temperature co-fired ceramic (LTCC).
9. The antenna module of claim 1 , wherein one or more metal structures configured to prevent interference between one antenna and another antenna among the plurality of antennas are disposed on the first PCB.
10. The antenna module of claim 1 ,
wherein the first PCB comprises one or more air vent holes and one or more first fiducial marks,
wherein the second PCB comprises one or more second fiducial marks, and
wherein positions of the one or more second fiducial marks correspond to positions of the one or more first fiducial marks.
11. The antenna module of claim 10 , further comprising:
a metal frame configured to surround the first PCB.
12. An electronic device comprising:
a plurality of first printed circuit boards (PCBs), an antenna circuit being disposed on each of the plurality of first PCBs;
a second PCB on which a power supply, a direct current (DC)/DC converter, and a field programmable gate array (FPGA) are disposed; and
a plurality of third PCBs, a radio frequency integrated circuit (RFIC) being disposed on each of the plurality of third PCBs,
wherein each of the plurality of first PCBs is coupled to the second PCB via an adhesive material,
wherein each of the plurality of third PCBs is coupled to the second PCB via a grid array,
wherein a first PCB among the plurality of first PCBs comprises a first metal layer, a second metal layer, a dielectric, and a coupling structure plated along the first metal layer, the second metal layer, and a via hole between the first metal layer and the second metal layer, and
wherein the coupling structure is disposed to provide coupling connection via a coupling pad of the second PCB.
13. The electronic device of claim 12 ,
wherein the dielectric comprises a first polyimide (PI) film and a second PI film,
wherein the first PI and the second PI comprise a PI film configured as one layer,
wherein a first surface of the PI film is attached to the first metal layer via a first adhesive, and
wherein a second surface opposite to the first surface of the PI film is attached to the second metal layer via a second adhesive.
14. The electronic device of claim 12 , wherein the coupling structure is configured by a plurality of plating layers according to the plating.
15. The electronic device of claim 12 ,
wherein pressure corresponding to a distance between the first PCB and the second PCB is applied to the adhesive material, and
wherein a distance between the coupling structure and the coupling pad depends on a thickness of the adhesive material.
16. The electronic device of claim 12 ,
wherein a thickness of the adhesive material depends on a size of the via hole.
17. The electronic device of claim 12 , wherein the via hole is configured to feed an antenna.
18. The electronic device of claim 12 , wherein a thickness of the adhesive material is selected from 25 to 100 μm.
19. The electronic device of claim 18 , wherein the thickness depends on a type of an antenna.
20. The electronic device of claim 12 , wherein the adhesive material comprises a bonding sheet or adhesive tape.