Antenna structure and electronic device comprising same
The disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a data transmission rate higher than that of a 4th generation (4G) communication system such as long term evolution (LTE). An antenna structure of a wireless communication system is provided. The antenna structure includes a first radiator, a first printed circuit board (PCB) in which the first radiator is arranged, a plurality of second radiators, a second PCB in which the plurality of second radiators are arranged, and a frame structure, wherein the frame structure is arranged such that an air layer is formed between the first PCB and the second PCB, and the plurality of second radiators can include a first metal patch arranged in a region corresponding to the first radiator, and a plurality of second metal patches arranged to be separated from the first metal patch so as to be fed by coupling.
1 . An antenna structure of a wireless communication system, the antenna structure comprising:
a first radiator;
a first printed circuit board (PCB) on which the first radiator is disposed;
a plurality of second radiators;
a second PCB on which the plurality of second radiators are arranged; and
a frame structure,
wherein the frame structure is disposed to form an air layer between the first PCB and the second PCB, and
wherein the plurality of second radiators comprise:
a first metal patch disposed in an area corresponding to the first radiator, and
a plurality of second metal patches, each arranged to be spaced apart from the first metal patch and to be fed by coupling from the first metal patch.
2 . The antenna structure of claim 1 ,
wherein the first metal patch is fed by coupling, from the first radiator, via a first point and a second point of the first metal patch,
wherein a first polarization is formed in a first signal fed via the first point, and
wherein a second polarization is formed in a second signal fed via the second point.
3 . The antenna structure of claim 2 , wherein the first metal patch is configured to:
coupling-feed a co-polarization (co-pol) component of the first polarization of the first signal to metal patches arranged in a first arrangement among the plurality of second metal patches; and
coupling-feed a co-pol component of the second polarization of the second signal to metal patches arranged in a second arrangement among the plurality of second metal patches.
4 . The antenna structure of claim 3 , further comprising:
a third radiator;
a third metal patch; and
a plurality of fourth metal patches included in the plurality of second radiators,
wherein the third metal patch is disposed in an area corresponding to the third radiator, while being spaced apart therefrom,
wherein the plurality of fourth metal patches are arranged while being spaced apart from the third metal patch to be fed by coupling therefrom,
wherein the third metal patch is fed by coupling, from the third radiator, via a third point and a fourth point of the third metal patch,
wherein the first polarization is formed in the first signal fed via the third point, and
wherein the second polarization is formed in the second signal fed via the fourth point.
5 . The antenna structure of claim 4 ,
wherein the third metal patch is configured to:
coupling-feed a co-polarization (co-pol) component of the first polarization of the first signal to metal patches arranged in a first arrangement among the plurality of fourth metal patches; and
coupling-feed a co-pol component of the second polarization of the second signal to metal patches arranged in a second arrangement among the plurality of fourth metal patches, and
wherein the plurality of fourth metal patches at least partially overlap the plurality of second metal patches.
6 . The antenna structure of claim 4 , wherein a distance from the center of the first metal patch to the center of the third metal patch is determined based on wavelengths of the first signal and the second signal fed to the first metal patch.
7 . The antenna structure of claim 3 , wherein the co-pol component of the first polarization is formed to be orthogonal to the co-pol component of the second polarization.
8 . The antenna structure of claim 7 ,
wherein the co-pol component of the first polarization is formed as +45°, and
the co-pol component of the second polarization is formed as −45°.
9 . The antenna structure of claim 3 , wherein a direction of the first arrangement is orthogonal to a direction of the second arrangement.
10 . The antenna structure of claim 1 , wherein the first radiator and the plurality of second radiators comprise at least one shape among a circle, a quadrangle, or an octagon.
11 . An electronic device in a wireless communication system, the electronic device comprising:
a plurality of sub-arrays; and
a plurality of radio frequency integrated circuits (RFICs) connected to correspond to the plurality of sub-arrays, respectively,
wherein each of the plurality of sub-arrays comprises:
a plurality of first radiators,
a first printed circuit board (PCB) on which the plurality of first radiators are arranged,
a plurality of second radiators,
a second PCB on which the plurality of second radiators are arranged, and
a frame structure,
wherein the frame structure is disposed to form an air layer between the first PCB and the second PCB, and
wherein the plurality of second radiators comprise:
a plurality of first metal patches arranged in an area corresponding to the plurality of first radiators, respectively, and
a plurality of second metal patches arranged while being spaced apart from the plurality of first metal patches, respectively, to be fed by coupling.
12 . The electronic device of claim 11 ,
wherein the plurality of first metal patches are fed by coupling via a first point and a second point from the plurality of first radiators corresponding thereto, respectively,
wherein a first polarization is formed in a first signal fed via the first point, and
wherein a second polarization is formed in a second signal fed via the second point.
13 . The electronic device of claim 12 ,
wherein the plurality of first metal patches are configured to:
coupling-feed a co-polarization (co-pol) component of the first polarization of the first signal to the plurality of second metal patches arranged in a first arrangement based on the plurality of first metal patches, respectively; and
coupling-feed a co-pol component of the second polarization of the second signal to the plurality of second metal patches arranged in a second arrangement based on the plurality of first metal patches, respectively, and
wherein the first arrangement and the second arrangement are orthogonal to each other.
14 . An antenna structure of a wireless communication system, the antenna structure comprising:
a first printed circuit board (PCB) comprising a feeding line;
a first radiator;
a plurality of second radiators;
a second PCB; and
a frame structure,
wherein the frame structure is disposed to form an air layer between the first PCB and the second PCB,
wherein the first radiator is disposed on a first surface of the second PCB,
wherein the plurality of second radiators are arranged on a second surface opposite to the first surface,
wherein the first radiator is fed by coupling from the feeding line of the first PCB, and
wherein the plurality of second radiators comprise:
a first metal patch disposed in an area corresponding the first radiator, and
a plurality of second metal patches arranged while being spaced apart from the first metal patch to be fed by coupling.
15 . The antenna structure of claim 14 ,
wherein the first metal patch is fed by coupling, from the first radiator, via a first point and a second point of the first metal patch,
wherein a first polarization is formed in a first signal fed via the first point,
wherein a second polarization is formed in a second signal fed via the second point,
wherein the first metal patch is configured to:
coupling-feed a co-polarization (co-pol) component of the first polarization of the first signal to the plurality of second metal patches arranged in a first arrangement based on the first metal patch, and
coupling-feed a co-pol component of the second polarization of the second signal to the plurality of second metal patches arranged in a second arrangement based on the first metal patch, and
wherein the first arrangement and the second arrangement are orthogonal to each other.
16 . The antenna structure of claim 15 , wherein the first metal patch is fed via an M port and a P port, respectively.
17 . The antenna structure of claim 16 , wherein the M port and the P port are fed in consideration of polarization.
18 . The antenna structure of claim 17 , wherein the first signal having a polarization of −45° is fed to the M port and the first signal having a polarization of +45° is fed to the P port.