CN217387519U

CN217387519U - Antenna radiator, antenna and equipment

Info

Publication number: CN217387519U
Application number: CN202220550213.1U
Authority: CN
Inventors: 张冬生
Original assignee: Beijing Rockrobo Technology Co Ltd
Current assignee: Beijing Rockrobo Technology Co Ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-09-06
Anticipated expiration: 2032-03-14

Abstract

The embodiment of the utility model discloses an antenna radiator, antenna and equipment, this antenna radiator includes first radiation arm, second radiation arm, third radiation arm and fourth radiation arm; one end of the first radiating arm is connected with one end of the second radiating arm, and the first radiating arm is perpendicular to the second radiating arm; the other end of the second radiating arm and one end of the fourth radiating arm are respectively connected with one end of the third radiating arm, the other end of the fourth radiating arm is a feed end, and the third radiating arm is perpendicular to the second radiating arm and the fourth radiating arm. The antenna radiator can work in the frequency bands of 2.07GHz-3.28GHz and 4.99GHz-5.91GHz, has wider bandwidth and low return loss, thereby meeting the use requirements of dual frequency bands and improving the performance of the antenna. In addition, the antenna is small in size and beneficial to miniaturization and integration of the antenna.

Description

Antenna radiator, antenna and equipment

Technical Field

The utility model relates to a communication equipment field particularly relates to an antenna radiation body, antenna and equipment.

Background

With the development of mobile internet technology, wireless WiFi is gaining wide attention due to fast data transmission speed and convenient use, and an antenna is one of important elements in the WiFi communication field.

At present, the commonly used WiFi communication technology basically works in a 2.4GHz wireless frequency band, and with the increasing number of devices in the 2.4GHz frequency band, channels are crowded in 2.25-2.73 GHz. In order to solve the problem of insufficient bandwidth of 2.4GHz, the WiFi communication technology may operate in the 5G frequency band. However, as shown in fig. 1, some existing antennas can only operate in the 2.25-2.73GHz band, and cannot meet the actual use requirements. While other antennas can work in 2.4GHz and 5G frequency bands, the size of these antennas is large, which is not favorable for miniaturization and integration of the antennas, and the bandwidth is narrow, the return loss is high, and the performance of the antennas is affected.

SUMMERY OF THE UTILITY MODEL

In the summary section a series of concepts in a simplified form is introduced, which will be described in further detail in the detailed description section. The inventive content of the present application does not imply any attempt to define the essential features and characteristics of the claimed solution, nor does it imply any attempt to determine the scope of the claimed solution.

In a first aspect, an embodiment of the present invention provides an antenna radiator, including a first radiating arm, a second radiating arm, a third radiating arm, and a fourth radiating arm;

one end of the first radiating arm is connected with one end of the second radiating arm, and the first radiating arm is perpendicular to the second radiating arm; the other end of the second radiating arm and one end of the fourth radiating arm are respectively connected with one end of the third radiating arm, the other end of the fourth radiating arm is a feed end, and the third radiating arm is perpendicular to the second radiating arm and the fourth radiating arm.

Optionally, the antenna further includes a fifth radiation arm, one end of the fifth radiation arm is connected to the first radiation arm, and the other end of the fifth radiation arm is connected to the third radiation arm.

Optionally, the fifth radiating arm is parallel to the second radiating arm.

Optionally, the first radiating arm includes a first radiating segment and a second radiating segment, the first radiating segment is connected to the second radiating arm through the second radiating segment, and the first radiating segment is arranged along an extending direction of the second radiating segment.

Optionally, the third radiating arm includes a third radiating segment and a fourth radiating segment, the fourth radiating segment is connected to the fourth radiating arm through the third radiating segment, and the fourth radiating segment is arranged along an extension direction of the third radiating segment.

Optionally, the operating frequency band of the antenna radiator is 2.07GHz-3.28GHz and 4.99GHz-5.91 GHz.

In a second aspect, embodiments of the present invention provide an antenna, including a substrate and an antenna radiator as described above, the antenna radiator is disposed on the substrate.

Optionally, the substrate is a PCB.

The embodiment of the utility model provides a, the dielectric plate of PCB board is FR4 dielectric plate.

In a third aspect, an embodiment of the present invention provides an apparatus, including a main body and the antenna described above, where the antenna is disposed on the main body.

According to the utility model provides an antenna radiator, antenna and equipment, this antenna radiator can be at 2.07GHz-3.28GHz and 4.99GHz-5.91 GHz's frequency channel work to the bandwidth broad, return loss is low, thereby can satisfy the user demand of dual-band, can improve the performance of antenna again. In addition, the antenna is small in size and beneficial to miniaturization and integration of the antenna.

Drawings

The following drawings of the present invention are used herein as part of the embodiments of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions of the invention, which are used to explain the principles of the invention.

In the drawings:

FIG. 1 is a return loss plot of a prior art antenna;

fig. 2 is a block diagram of an antenna radiator according to an alternative embodiment of the present invention;

fig. 3 is a schematic size diagram of an antenna radiator according to an alternative embodiment of the present invention;

fig. 4 is a return loss plot of an antenna radiator according to an alternative embodiment of the present invention;

fig. 5 is a directional diagram of an antenna radiator according to an alternative embodiment of the present invention;

fig. 6 is a pattern diagram of a conventional dipole antenna.

Description of reference numerals:

10-a first radiating arm, 101-a first radiating section, 102-a second radiating section, 20-a second radiating arm, 30-a fifth radiating arm, 40-a third radiating arm, 401-a third radiating section, 402-a fourth radiating section, 50-a fourth radiating arm, 60-a feed terminal.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.

It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art.

In a first aspect, as shown in fig. 2, an embodiment of the present invention provides an antenna radiator, including a first radiating arm 10, a second radiating arm 20, a third radiating arm 40, and a fourth radiating arm 50; one end of the first radiating arm 10 is connected with one end of the second radiating arm 20, and the first radiating arm 10 is perpendicular to the second radiating arm 20; the other end of the second radiating arm 20 and one end of the fourth radiating arm 50 are connected to one end of the third radiating arm 40, respectively, the other end of the fourth radiating arm 50 is a feeding end 60, and the third radiating arm 40 is perpendicular to the second radiating arm 20 and the fourth radiating arm 50.

The first radiating arm 10, the second radiating arm 20, the third radiating arm 40, and the fourth radiating arm 50 may be of a patch structure, and specifically, the patch may be made of a conductive material such as silver, aluminum, iron, zinc, or a metal alloy, and preferably, a conductive material with low loss, such as a copper or silver surface, is used. Of course, non-metals such as graphite, composite plastic materials formed by adding conductive materials, etc. may also be used, and the embodiment is not limited.

Specifically, the L-shaped structure formed by the first radiating arm 10, the second radiating arm 20 and the fourth radiating arm 50 can receive or transmit electromagnetic waves in the 2.4G frequency band, and in a preferred embodiment, can receive or transmit electromagnetic waves in the 2.07GHz-3.28GHz frequency band; the L-shaped structure formed by the third and fourth radiating

arms

40 and 50 can receive or transmit electromagnetic waves in the 5G band, and in a preferred embodiment, can receive or transmit electromagnetic waves in the 4.99GHz-5.91GHz band, so that the antenna can operate in the 2.07GHz-3.28GHz and 4.99GHz-5.91GHz bands, and has a wider bandwidth and a lower return loss. And the antenna radiator does not need to be connected with a ground plate, so that the structure of the antenna radiator is simpler and more compact.

In addition, the first radiating arm 10 is perpendicular to the second radiating arm 20, and the third radiating arm 40 is perpendicular to the second radiating arm 20 and the fourth radiating arm 50, which is beneficial to calculating the overall size of the antenna in industrial production.

According to the embodiment of the utility model provides an antenna radiator, antenna and equipment, this antenna radiator can be at 2.07GHz-3.28GHz and 4.99GHz-5.91 GHz's frequency channel work to the bandwidth broad, return loss is low, thereby can satisfy the user demand of dual-band, can improve the performance of antenna again. In addition, the antenna is small in size and beneficial to miniaturization and integration of the antenna.

Further, as shown in fig. 2, the antenna further includes a fifth radiation arm 30, one end of the fifth radiation arm 30 is connected to the first radiation arm 10, and the other end of the fifth radiation arm 30 is connected to the third radiation arm 40.

The fifth radiating arm 30 can improve the signal quality of the 2.4G band and the 5G band at the same time, and as in the preferred embodiment, the return loss of the 2.07GHz-3.28GHz band and the return loss of the 4.99GHz-5.91GHz band can be improved by optimizing the fifth radiating arm, and the bandwidth of the two bands, namely the 2.4G band and the 5G band, can be widened. Specifically, the worker may adjust the performance of the antenna in the 2.4G frequency band and the 5G frequency band by adjusting the length and/or the width of the fifth radiating arm 30.

In some embodiments, as shown in fig. 2, the fifth radiating arm 30 is parallel to the second radiating arm 20, thereby facilitating the fabrication of the fifth radiating arm 30 and facilitating the sizing of the fifth radiating arm 30 by the worker.

Further, as shown in fig. 2, the first radiating arm 10 includes a first radiating section 101 and a second radiating section 102, the first radiating section 101 is connected to the second radiating arm 20 through the second radiating section 102, and the first radiating section 101 is disposed along a length extending direction of the second radiating section 102.

A worker may comprehensively adjust the performance of the antenna in the 2.4G band by adjusting at least one of the lengths and/or widths of the first radiating section 101, the second radiating section 102, the second radiating arm 20, and the fourth radiating arm 50.

As shown in fig. 2, the third radiation arm 40 includes a third radiation section 401 and a fourth radiation section 402, the fourth radiation section 402 is connected to the fourth radiation arm 50 through the third radiation section 401, and the fourth radiation section 402 is disposed along a length extending direction of the third radiation section 401.

The worker can adjust the performance of the antenna in the 5G band by adjusting at least one of the lengths and/or widths of the third radiating section 401, the fourth radiating section 402 and the fourth radiating arm 50.

Illustratively, as shown in fig. 3, the width W1 of the first radiating section 101 is 3mm, and the length L1 is 6.2 mm; the width W2 of the second radiating section 102 is 3mm, and the length L2 is 9.8 mm; the width W3 of the fifth radiating arm 30 is 2mm, and the length L3 is 4 mm; the width W4 of the second radiating arm 20 is 3mm and the length L4 is 4 mm; the third radiating section 401 has a width W6 of 3mm and a length L6 of 9.8 mm; the width W5 of the fourth radiating section 402 is 3mm in length, and the length L5 is 2.2 mm; the width W7 of the fourth radiating arm 50 is 3mm, and the length L7 of the fourth radiating arm 50 is 3.5 mm.

The simulation is carried out aiming at the size of the antenna radiator, as shown in figure 4, the return loss S11 of the antenna radiator is less than or equal to-10 dB, and the antenna radiator completely covers two frequency bands of 2.07GHz-3.28GHz and 4.99GHz-5.91GHz, so that the structure can be effectively proved to meet the use requirement of the double frequency bands of WiFi. In addition, the overall size of the structure is almost the same as that of a 2.4GHz single-band antenna of the prior art design 1/4 wavelength, and the antenna radiator has a wider bandwidth than that of the existing single-band antenna. Meanwhile, it can be seen from the above dimensions that the length of the L-shaped structure formed by the length L1 of the first radiating segment 101, the length L2 of the second radiating segment 102, the length L4 of the second radiating arm 20, the width W6 of the third radiating segment 401, and the length L7 of the fourth radiating arm 50 is 2.65cm, while the length of the dual-band antenna in the prior art is approximately 4 cm.

In addition, the conventional dipole antenna has weak radiation capability in a part of directions, and particularly referring to fig. 6, the conventional dipole antenna has weak radiation capability in the Z-axis direction compared with the Y-axis and Z-axis directions; as shown in fig. 5, the antenna radiator in this embodiment can radiate electromagnetic waves with high intensity in all directions of the spherical space, and has better omni-directionality.

In the above embodiment, the operating frequency bands of the antenna radiators are 2.07GHz-3.28GHz and 4.99GHz-5.91GHz, so that the dual-band use requirements of the WiFi antenna can be met.

In a second aspect, embodiments of the present invention provide an antenna, including a substrate and an antenna radiator as described above, the antenna radiator being disposed on the substrate.

The substrate may be in a regular shape, such as a circle or a rectangle, or may be in an irregular shape, which is not strictly limited in this embodiment.

It should be noted that the antenna radiator according to the present embodiment may adopt the antenna radiator according to the foregoing embodiment, and for specific implementation and working principle of the antenna radiator, reference may be made to corresponding contents in the foregoing embodiment, and details are not described here again.

In addition, the antenna radiator in the embodiment does not need to be connected with the ground plate, so that the process of arranging the ground plate on the substrate is omitted, the manufacturing process is simplified, and the overall size of the antenna can be reduced.

In particular, the substrate is a PCB board, such that the antenna radiator is arranged in a clearance area of the PCB board to reduce the space occupied by the antenna radiator.

Furthermore, the dielectric board of the PCB is an FR4 dielectric board, and the FR4 material has the advantages of stable electrical insulation, good flatness, smooth surface, no pits, and standard thickness tolerance, and has good electrical characteristics and less environmental impact. In this embodiment, the thickness of the FR4 dielectric plate is not strictly limited, and the staff member can determine the thickness of the FR4 dielectric plate according to the actual requirement. Illustratively, if the size of the antenna radiator in the above embodiment is adopted, the thickness of the FR4 dielectric plate is 1.6 mm.

In a third aspect, an embodiment of the present invention provides an apparatus, including a main body and the above-mentioned antenna, the antenna is disposed on the main body.

It should be noted that the antenna according to the embodiment may adopt the antenna according to the embodiment, and specific implementation and working principle of the antenna may refer to corresponding contents in the embodiment, which is not described herein again.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that many variations and modifications may be made in accordance with the teachings of the present invention, all within the scope of the present invention as claimed. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An antenna radiator is characterized by comprising a first radiating arm, a second radiating arm, a third radiating arm and a fourth radiating arm;

one end of the first radiating arm is connected with one end of the second radiating arm, and the first radiating arm is perpendicular to the second radiating arm; the other end of the second radiating arm and one end of the fourth radiating arm are respectively connected with one end of the third radiating arm, the other end of the fourth radiating arm is a feeding end, and the third radiating arm is perpendicular to the second radiating arm and the fourth radiating arm.

2. The antenna radiator of claim 1, further comprising a fifth radiating arm, wherein one end of the fifth radiating arm is connected to the first radiating arm, and the other end of the fifth radiating arm is connected to the third radiating arm.

3. The antenna radiator of claim 2, wherein the fifth radiating arm is parallel to the second radiating arm.

4. The antenna radiator of claim 1, wherein the first radiating arm comprises a first radiating segment and a second radiating segment, the first radiating segment is connected to the second radiating arm through the second radiating segment, and the first radiating segment is arranged along an extension direction of the second radiating segment.

5. The antenna radiator of claim 1, wherein the third radiating arm includes a third radiating segment and a fourth radiating segment, the fourth radiating segment is connected to the fourth radiating arm through the third radiating segment, and the fourth radiating segment is arranged along a length extending direction of the third radiating segment.

6. The antenna radiator of claim 1 wherein the operating frequency bands of the antenna radiator are 2.07GHz-3.28GHz and 4.99GHz-5.91 GHz.

7. An antenna comprising a substrate and an antenna radiator as claimed in any one of claims 1 to 6, the antenna radiator being disposed on the substrate.

8. The antenna of claim 7, wherein the substrate is a PCB board.

9. The antenna of claim 8, wherein the dielectric board of the PCB board is an FR4 dielectric board.

10. A device comprising a body and an antenna as claimed in any of claims 7 to 9, the antenna being provided on the body.