Ring-shaped antenna and ear module comprising same
Disclosed are: a ring-shaped antenna which is formed in the form of a ring mounted between the housing of an ear module and the outer circumference of a coin-shaped battery and communicates with an antenna, mounted on another ear module, via NFMI; and a wireless earphone comprising the ring-shaped antenna. The disclosed ring-shaped antenna comprises: a first terminal sheet and a second terminal sheet, each extending from one side of a base sheet and having a terminal formed thereon; a plurality of front radiation patterns disposed apart from one another on the front surface of the base sheet; and a plurality of rear radiation patterns disposed apart from one another on the rear surface of the base sheet, wherein the plurality of front radiation patterns and the plurality of rear radiation patterns are connected through via-holes and thereby form an antenna pattern wound in the vertical direction of the base sheet.
1. A ring-shaped antenna, comprising:
a rectangular base sheet having a first short side, a second short side, a first long side, and a second long side;
a radiation wire alternately passing through the first long side and the second long side to be wound vertically around the base sheet; and
a terminal sheet formed with a first terminal and a second terminal,
wherein the base sheet and the terminal sheet are formed in a ring shape,
wherein one end of the terminal sheet is connected to the first short side of the base sheet and the other end of the terminal sheet is connected to the second short side of the base sheet,
wherein the terminal sheet extends further outward than the first long side of the base sheet,
and wherein the first terminal and the second terminal are connected to both ends of the radiation wire respectively.
2. The ring-shaped antenna of claim 1 ,
wherein the base sheet is a synthetic resin having flexibility and insulation.
3. The ring-shaped antenna of claim 1 ,
wherein the base sheet is one magnetic sheet selected from a ferrite sheet, a polymer sheet, a nano ribbon sheet, and an iron-based sheet.
4. The ring-shaped antenna of claim 1 ,
wherein the radiation wire winds the front surface and the rear surface of the base sheet, alternately, and portions wound around the same surface are spaced apart from one another.
5. An ear module, comprising:
a housing;
a coin-shaped battery accommodated in the housing; and
a ring-shaped antenna disposed between the outer circumference of the coin-shaped battery and the housing,
wherein the ring-shaped antenna comprises
a rectangular base sheet having a first short side, a second short side, a first long side, and a second long side;
a radiation wire alternately passing through the first long side and the second long side to be wound vertically around the base sheet; and
a terminal sheet formed with a first terminal and a second terminal,
wherein the base sheet and the terminal sheet are formed in a ring shape,
wherein one end of the terminal sheet is connected to the first short side of the base sheet
and the other end of the terminal sheet is connected to the second short side of the base sheet,
wherein the terminal sheet extends further outward than the first long side of the base sheet,
and wherein the first terminal and the second terminal are connected to both ends of the radiation wire respectively.
6. The ear module of claim 5 , further comprising a circuit board accommodated in the ring-shaped antenna, and disposed on the upper portion of the coin-shaped battery,
wherein a terminal sheet of the ring-shaped antenna is connected to the circuit board.