Antenna structure and head mounted display device
An antenna structure and a head mounted display device are provided. The antenna structure includes a first structure body, a second structure body and a feeding element. The first structure body receives a reference ground voltage. The second structure body is coupled to the first structure body. The second structure body includes a conductive part, a shaft sleeves part and a shaft body, the shaft body passes through the shaft sleeves part, the shaft body is electronically coupled to the conductive part, and the conductive part is coupled to a feed point. The feeding element is coupled to the feed point and the first structure body, and is used for transmitting and receiving a radio frequency signal.
1 . An antenna structure, comprising:
a first structure body, receiving a reference ground voltage;
a second structure body, coupled to the first structure body, the second structure body comprises a conductive part, a shaft sleeves part and a shaft body, the shaft body passes through the shaft sleeves part, the shaft body, as a radiator, is electronically coupled to the conductive part, and the conductive part is coupled to a feed point; and
a feeding element, coupled to the feed point and the first structure body, and is used for transmitting and receiving a radio frequency signal,
wherein the shaft body has an axial direction, and the length of the shaft body along the axial direction is ½ or ¼ of the wavelength of the radio frequency signal.
2 . The antenna structure according to claim 1 , further comprises at least one first connector and at least one second connector, the first structure body has at least one first perforation, the second structure body has at least one second perforation coupled to the feed point and at least one third perforation coupled to a ground plane of the first structure body, the first connector passes through the second perforation to make the second structure body and the feeding element electrically connected, the second connector passes through the third perforation and the first perforation to make the second structure body and the ground plane electrically connected.
3 . The antenna structure according to claim 1 , wherein the second structure body has a polygonal substrate, and a conductive pattern is formed on a surface of the polygonal substrate.
4 . The antenna structure according to claim 1 , wherein the second structure body is a conductive structure.
5 . The antenna structure according to claim 1 , wherein the feeding element comprises:
a signal transmission line, transmitting and receiving the radio frequency signal; and
a plurality of reference signal lines,
wherein the signal transmission line is disposed between the reference signal lines.
6 . The antenna structure according to claim 1 , wherein the shaft sleeves part and the shaft body are conductors.
7 . A head mounted display device, comprising:
a main body;
two temples, respectively disposed on opposite sides of the main body; and
at least one antenna structure, disposed in at least one of the two temples, and comprises:
a first structure body, receiving a reference ground voltage;
a second structure body, coupled to the first structure body, the second structure body comprises a conductive part, a shaft sleeves part and a shaft body, the shaft body passes through the shaft sleeves part, the shaft body, as a radiator, is electronically coupled to the conductive part, and the conductive part is coupled to a feed point; and
a feeding element, coupled to the feed point and the first structure body, and is used for transmitting and receiving a radio frequency signal,
wherein the shaft body has an axial direction, and the length of the shaft body along the axial direction is ½ or ¼ of the wavelength of the radio frequency signal.
8 . The head mounted display device according to claim 7 , further comprises at least one first connector and at least one second connector, the first structure body has at least one first perforation, the second structure body has at least one second perforation coupled to the feed point and at least one third perforation coupled to a ground plane of the first structure body, the first connector passes through the second perforation to make the second structure body and the feeding element electrically connected, the second connector passes through the third perforation and the first perforation to make the second structure body and the ground plane electrically connected.
9 . The head mounted display device according to claim 7 , wherein the second structure body has a polygonal substrate, and a conductive pattern is formed on a surface of the polygonal substrate.
10 . The head mounted display device according to claim 7 , wherein the second structure body is a conductive structure.
11 . The head mounted display device according to claim 7 , wherein the feeding element comprises:
a signal transmission line, transmitting and receiving the radio frequency signal; and
a plurality of reference signal lines,
wherein the signal transmission line is disposed between the reference signal lines.
12 . The head mounted display device according to claim 7 , wherein the shaft sleeves part and the shaft body are conductors.