CN-224232924-U - Antenna and wireless communication device

Abstract

The present application relates to an antenna and a wireless communication device. The antenna comprises an antenna substrate, a first antenna and a second antenna, wherein the first antenna is of a monopole radiation structure, the second antenna is of a dipole radiation structure, the first antenna and the second antenna are arranged on the antenna substrate along the length direction of the antenna substrate, the first antenna is used for radiating signals of a first frequency band in an omni-directional mode, the second antenna is used for radiating signals of a second frequency band in an omni-directional mode, the frequency range of the first frequency band is at least partially different from the frequency range of the second frequency band, the first antenna has a horizontal polarization direction and a vertical polarization direction, and the second antenna has a vertical polarization direction, so that the isolation degree of the first antenna and the second antenna is larger than an isolation degree threshold value. The antenna can support a multi-band broadband, and the isolation degree and the antenna efficiency between the first antenna and the second antenna are ensured.

Inventors

• CHEN WENKUAN

Assignees

• 深圳海翼智新科技有限公司

Dates

Publication Date

20260512

Application Date

20250521

Claims (15)

1. 1. An antenna, comprising: An antenna substrate; the first antenna is of a monopole radiation structure; The second antenna is of a dipole radiation structure, and the first antenna and the second antenna are arranged on the antenna substrate along the length direction of the antenna substrate; the first antenna is used for omnidirectionally radiating signals of a first frequency band, the second antenna is used for omnidirectionally radiating signals of a second frequency band, the frequency range of the first frequency band is at least partially different from that of the second frequency band, the first antenna has a horizontal polarization direction and a vertical polarization direction, and the second antenna has a vertical polarization direction, so that the isolation degree of the first antenna and the second antenna is larger than an isolation degree threshold value.
2. 2. The antenna of claim 1, wherein the first antenna comprises: A first radiator; A floor; The first feed structure is arranged between the first radiator and the floor, and the first radiator and the floor form a monopole radiating structure.
3. 3. The antenna of claim 2, wherein the first radiator comprises a first radiating portion, a second radiating portion, and a third radiating portion; The first radiation part and the third radiation part are arranged along the length direction of the antenna substrate, and the second radiation part is arranged along the width direction of the antenna substrate; The first end of the first radiating part is a free end, the second end of the first radiating part is connected with the first end of the second radiating part, the second end of the second radiating part is connected with the first end of the third radiating part, and the second end of the third radiating part is connected with the first feed structure.
4. 4. An antenna according to claim 3, wherein the height of the first radiating portion is in the range 18.15 mm to 54.45 mm.
5. 5. The antenna of claim 3 or 4, wherein the floor comprises a first floor and a second floor, each of the first floor and the second floor being disposed along a length of the antenna substrate; The first end of the first floor is a free end, the second end of the first floor comprises a first bending part arranged along the width direction of the antenna substrate, and the first bending part is connected with the first feed structure; The second floor comprises a first opening, the first bending part is connected with one side of the first opening in the second floor, so that the first floor and the second floor form a second opening, the opening direction of the first opening is opposite to the opening direction of the second opening, and the other side of the first opening in the second floor is a free end.
6. 6. The antenna of claim 5, wherein the first floor has a height in the range of 15.85 mm to 47.55 mm, the second floor has a height in the range of 19.25 mm to 57.75 mm, and the first opening has an opening height in the range of 11.5 mm to 34.5 mm.
7. 7. The antenna of claim 1, wherein the second antenna comprises: a second radiator; A third radiator; And the second feed structure is arranged between the second radiator and the third radiator, and the second radiator and the third radiator form a dipole radiation structure.
8. 8. The antenna of claim 7, wherein the second radiator comprises a fourth radiating portion, a fifth radiating portion, a first band-pass filtered radiating portion, and a sixth radiating portion; The fourth radiation part and the fifth radiation part are arranged along the length direction of the antenna substrate, and the sixth radiation part is arranged along the width direction of the antenna substrate; The first end of fourth radiating portion is the free end, the second end of fourth radiating portion includes the edge the second kink that the width direction of antenna substrate set up, the second kink with the second feed structure is connected, the second kink still with the first end of fifth radiating portion is connected, the first end of sixth radiating portion is the free end, first band-pass filtering radiating portion connects between the second end of fifth radiating portion and the second end of sixth radiating portion.
9. 9. The antenna of claim 7, wherein the second radiator comprises an interdigital radiating structure and a serpentine radiating structure arranged in parallel.
10. 10. The antenna of claim 8, wherein the fifth radiating portion has a height in the range of 5.675 mm to 17.025 mm, the first bandpass filtered radiating portion has a height in the range of 1.6 mm to 4.8 mm, and the first bandpass filtered radiating portion has a width in the range of 2.675 mm to 8.025 mm.
11. 11. The antenna of any one of claims 7-10, wherein the third radiator comprises a seventh radiating portion, an eighth radiating portion, a second bandpass filtered radiating portion, and a ninth radiating portion; The seventh radiation part and the eighth radiation part are arranged along the length direction of the antenna substrate, and the ninth radiation part is arranged along the width direction of the antenna substrate; The first end of the seventh radiating portion is a free end, the second end of the seventh radiating portion is connected with the second feed structure, a third bending portion arranged along the width direction of the antenna substrate is further included between the first end of the seventh radiating portion and the second end of the seventh radiating portion, the third bending portion is connected with the first end of the eighth radiating portion, the first end of the ninth radiating portion is a free end, and the second band-pass filtering radiating portion is connected between the second end of the eighth radiating portion and the second end of the ninth radiating portion.
12. 12. The antenna of any one of claims 7-10, wherein the third radiator comprises an apodized radiating structure and a serpentine radiating structure arranged in parallel.
13. 13. The antenna of claim 11, wherein a height range between the first end of the seventh radiating portion and the second end of the seventh radiating portion is 6.86 mm to 20.58 mm, a height range of the eighth radiating portion is 6.485 mm to 19.455 mm, a width range of the ninth radiating portion is 3.7 mm to 11.1 mm, a height range of the second bandpass filtered radiating portion is 1.6 mm to 4.8 mm, and a width range of the second bandpass filtered radiating portion is 2.675 mm to 8.025 mm.
14. 14. A wireless communication device, characterized in that an antenna according to any of claims 1 to 13 is provided in the wireless communication device.
15. 15. The wireless communication device according to claim 14, characterized in that it comprises an image transmission module comprising a communication module and at least one vertical pole sleeve, in which an antenna according to any one of claims 1 to 13 is arranged, the communication module being connected to the antenna.

Description

Antenna and wireless communication device Technical Field The present application relates to the field of antenna technologies, and in particular, to an antenna and a wireless communication device. Background For wireless communication devices, antenna design determines the reliability and efficiency of wireless signal transmission, and thus, antenna design is one of the cores of wireless communication devices. As devices have been miniaturized, the space available for arranging antennas in wireless communication devices has been increasingly limited, and antenna designs have tended to be miniaturized. For example, taking an image transmission module as an example, the image transmission module can transmit video data captured by a camera to a monitoring center or other back-end equipment through a wireless communication technology, so as to realize remote transmission of the video data, the image transmission module comprises a vertical rod sleeve, an antenna of the image transmission module is accommodated in the vertical rod sleeve, and the space for installing the antenna in the vertical rod sleeve is only in a centimeter level. Therefore, how to ensure that the designed antenna meets the antenna transmission performance requirement in this scenario is a challenge. Disclosure of utility model In a first aspect, an embodiment of the present application provides an antenna, including: An antenna substrate; the first antenna is of a monopole radiation structure; the second antenna is of a dipole radiation structure, and the first antenna and the second antenna are arranged on the antenna substrate along the length direction of the antenna substrate; The first antenna is used for omnidirectionally radiating signals of a first frequency band, the second antenna is used for omnidirectionally radiating signals of a second frequency band, the frequency range of the first frequency band is at least partially different from that of the second frequency band, the first antenna has a horizontal polarization direction and a vertical polarization direction, and the second antenna has a vertical polarization direction, so that the isolation degree of the first antenna and the second antenna is larger than an isolation degree threshold value. In one embodiment, the first antenna comprises: A first radiator; A floor; The first feed structure is arranged between the first radiator and the floor, and the first radiator and the floor form a monopole radiation structure. In one embodiment, the first radiator includes a first radiating portion, a second radiating portion, and a third radiating portion; The first radiation part and the third radiation part are arranged along the length direction of the antenna substrate; The first end of the first radiating part is a free end, the second end of the first radiating part is connected with the first end of the second radiating part, the second end of the second radiating part is connected with the first end of the third radiating part, and the second end of the third radiating part is connected with the first feed structure. In one embodiment, the height of the first radiating portion ranges from 18.15 millimeters to 54.45 millimeters. In one embodiment, the height of the first radiating portion is 36.3 millimeters. In one embodiment, the floor includes a first floor and a second floor, each of the first floor and the second floor being disposed along a length direction of the antenna substrate; The first end of the first floor is a free end, the second end of the first floor comprises a first bending part arranged along the width direction of the antenna substrate, and the first bending part is connected with the first feed structure; The second floor comprises a first opening, the first bending part is connected with one side of the first opening in the second floor, so that the first floor and the second floor form a second opening, the opening direction of the first opening is opposite to that of the second opening, and the other side of the first opening in the second floor is a free end. In one embodiment, the first floor has a height in the range of 15.85 mm to 47.55 mm, the second floor has a height in the range of 19.25 mm to 57.75 mm, and the first opening has an opening height in the range of 11.5 mm to 34.5 mm. In one embodiment, the first floor has a height of 31.7 mm, the second floor has a height of 38.5 mm, and the first opening has an opening height of 23 mm. In one embodiment, the second antenna comprises: a second radiator; A third radiator; And the second feed structure is arranged between the second radiator and the third radiator, and the second radiator and the third radiator form a dipole radiation structure. In one embodiment, the second radiator includes a fourth radiating portion, a fifth radiating portion, a first band-pass filtered radiating portion, and a sixth radiating portion; The fourth radiation part and the fifth radiation part are arranged al