Antenna of electronic device
An antenna of an electronic device is provided, which includes a radiator including at least part of a metal housing of the electronic device; a capacitor connected to the radiator; a feeding part connected to the radiator; and a ground part connected to the capacitor.
1. An antenna of an electronic device, the antenna comprising:
a radiator including at least part of a metal housing of the electronic device;
a capacitor connected to the radiator;
an additional capacitor;
a controller configured to control current flowing into at least one of the capacitor and the additional capacitor;
a feeding part connected to the radiator; and
a ground part connected to the capacitor.
2. The antenna of claim 1 , wherein the capacitor comprises at least one lumped element including a capacitance component.
3. The antenna of claim 2 , wherein the lumped element comprises:
a fixed lumped element having a fixed capacitance value; or
a variable lumped device having a variable capacitance value.
4. The antenna of claim 1 , wherein the radiator comprises at least part of a sidewall of the electronic device, the side wall being included in the metal housing.
5. The antenna of claim 1 , wherein the radiator further comprises a connection part connected to the capacitor, and
wherein the connection part is disposed at a position based on an operating frequency of the antenna.
6. The antenna of claim 1 , wherein the capacitor comprises:
a first layer of a printed circuit board (PCB) as a first conductor; and
at least part of a second layer of the PCB as a second conductor.
7. The antenna of claim 1 , wherein the capacitor comprises:
at least part of a printed circuit board (PCB) as a first conductor; and
at least part of the metal housing as a second conductor.
8. The antenna of claim 1 , wherein the capacitor has a fixed capacitance.
9. The antenna of claim 1 , wherein the capacitor has a variable capacitance.
10. An antenna of an electronic device, the antenna comprising:
a radiator including at least part of a metal housing of the electronic device;
a feeding part connected to the radiator; and
a ground part connected to a capacitor,
wherein at least part of the metal housing is used as a first conductor of the capacitor and a conductive material connected to the ground part is used as a second conductor of the capacitor.
11. The antenna of claim 10 , wherein the at least part of the metal housing serves as the radiator and the capacitor at the same time.
12. The antenna of claim 10 , wherein at least one of a form, a length, a surface area of the conductive material, and a distance between the conductive material and the at least part of the metal housing is determined based on an operating frequency of the antennal.
13. The antenna of claim 10 , wherein the conductive material is attached to a printed circuit board (PCB) including the ground part.
14. The antenna of claim 10 , wherein the conductive material comprises at least one of a flexible printed circuit board (FPCB), steel use stainless (SUS), and conductive tape.
15. An antenna of an electronic device, the antenna comprising:
a radiator including at least part of a metal housing of the electronic device;
a feeding part connected to the radiator;
a direct current (DC) blocking member spaced apart from the radiator; and
a ground part connected to the DC blocking member.
16. The antenna of claim 15 , wherein the DC blocking member blocks a flow of a DC current by using a capacitance component.
17. The antenna of claim 15 , wherein the DC blocking member blocks a flow of a DC current by using a capacitance component and at least part of the radiator disposed in correspondence to the DC blocking member.
18. The antenna of claim 15 , wherein the DC blocking member comprises at least one of a flexible printed circuit board (FPCB), steel use stainless (SUS), and conductive tape.