An omnidirectional antenna

Abstract

The present invention relates to an omnidirectional antenna, comprising a dielectric plate, a first antenna component and a second antenna component respectively printed on two sides of the dielectric plate; the first antenna component comprises a first connector and two first vibrators; the first vibrator is U-shaped, comprising a transverse portion and a first vibrator arm and a second vibrator arm extending from both ends of the transverse portion; the first connector connects the transverse portions of the two first vibrators; the second antenna component comprises a second connector and two second vibrators; the second vibrator is U-shaped, comprising a transverse portion and a third vibrator arm and a fourth vibrator arm extending from both ends of the transverse portion; the second connector connects the transverse portions of the two second vibrators; the first vibrator and the second vibrator are both asymmetric patterns; the first connector overlaps with the second connector, and the first vibrator partially overlaps with the second vibrator. The antenna provided by the present invention has a compact structure, and the working frequency band of the antenna can meet the requirements of multiple frequency bands of telecom operators, and is particularly suitable for 5G full-band omnidirectional antennas.

Description

[Technical field]

[0001] The invention relates to an omnidirectional antenna in the field of mobile communications. [Background technology]

[0002] Existing omnidirectional antennas include metal sleeves or printed dipole structures. Metal sleeve omnidirectional antennas have good omnidirectionality; however, they have the disadvantages of narrow operating frequency band (generally 5%-15%), complex structure, and low production efficiency. The structure of printed dipole antennas is simpler than that of metal sleeves, and production efficiency is improved. However, printed dipole antennas still have the disadvantage of narrow operating frequency band. In addition, the omnidirectionality of printed dipole structures is worse than that of sleeve antennas.

[0003] With the commercialization of the fifth-generation mobile communication system, the three domestic operators have begun to provide 5G signal coverage across the country, and there is a more urgent need for omnidirectional antennas and wide operating frequency bands. Therefore, an improvement solution is urgently needed. [Summary of the invention]

[0004] An object of the present invention is to increase the operating frequency band of an omnidirectional antenna.

[0005] To this end, the present invention provides an omnidirectional antenna, including a dielectric plate, a first antenna component and a second antenna component respectively printed on two side surfaces of the dielectric plate; the first antenna component includes a first vibrator, the first vibrator is U-shaped, including a transverse portion and a first vibrator arm and a second vibrator arm extending from both ends of the transverse portion, and the first vibrator is an asymmetric pattern; the second antenna component includes a second vibrator, the second vibrator is U-shaped, including a transverse portion and a third vibrator arm and a fourth vibrator arm extending from both ends of the transverse portion, and the second vibrator is an asymmetric pattern; the first vibrator partially overlaps with the second vibrator.

[0006] As a preferred solution, the first antenna assembly includes a first connecting member and two of the first vibrators; the U-shaped openings of the two first vibrators face the same direction, and the first connecting member connects the transverse parts of the two first vibrators; the second antenna assembly includes a second connecting member and two of the second vibrators; the U-shaped openings of the two second vibrators face the same direction, and the second connecting member connects the transverse parts of the two second vibrators.

[0007] As a preferred solution, the widths of the first dipole arm and the second dipole arm are the same or different.

[0008] As a preferred solution, the lengths of the first dipole arm and the second dipole arm are the same or different.

[0009] As a preferred solution, the width of the first vibrator arm or the second vibrator arm is 1.5-2.5 mm.

[0010] As a preferred solution, the width of the third dipole arm or the fourth dipole arm is 1.5-2.5 mm.

[0011] As a preferred solution, the width of the first dipole arm or the second dipole arm is fixed or variable.

[0012] As a preferred solution, the U-shaped openings of the first vibrator and the second vibrator are oriented in the same or opposite directions.

[0013] As a preferred solution, the transverse portion of the first vibrator overlaps with the transverse portion of the second vibrator or is 1 to 2 mm apart.

[0014] As a preferred solution, the first antenna component and the second antenna component are aligned with the surface of the dielectric plate.

[0015] The antenna provided by the present invention has a compact structure, and the working frequency band of the antenna can meet the various frequency band requirements of telecom operators. In addition, within the entire frequency band, the roundness is good and the gain is high. It is suitable for hotspot coverage and terminal receiving equipment. It can be applied to 5G full-band omnidirectional antennas. The antenna provided by the present invention can be mass-produced, and it is easy to ensure processing accuracy and performance consistency.

Brief Description of the Drawings

[0016] Figure 1 A schematic diagram of an omnidirectional antenna provided by an embodiment of the present invention;

[0017] Figure 2 and Figure 3 They are Figure 1 Schematic diagram of the front and back of the omnidirectional antenna shown;

[0018] Figure 4 yes Figure 1 A top view of the omnidirectional antenna shown;

[0019] Figures 5 to 10 The data graphs after the performance parameters of the antenna provided by the present invention are tested by the test software. In these graphs, the horizontal axis is the angle, the vertical axis is the electric field power amplitude, and the two-dimensional graph of the antenna spatial radiation energy distribution is displayed, where:

[0020] Figure 5 It is the horizontal plane radiation pattern of the antenna provided by the present invention at three typical high, medium and low frequency points in the frequency band of 2496-2960MHz;

[0021] Figure 6 It is the vertical plane radiation pattern of the antenna provided by the present invention at three typical high, medium and low frequency points in the frequency band of 2496-2960MHz;

[0022] Figure 7It is the horizontal plane radiation pattern of the antenna provided by the present invention at three typical high, medium and low frequency points in the 3.3-3.6 GHz frequency band;

[0023] Figure 8 It is the vertical plane radiation pattern of the antenna provided by the present invention at three typical high, medium and low frequency points in the 3.3-3.6 GHz frequency band;

[0024] Fig. 9 It is the horizontal plane radiation pattern of the antenna provided by the present invention at three typical high, medium and low frequency points in the 4.8-5 GHz frequency band;

[0025] Fig.10 It is the vertical plane radiation pattern of the antenna provided by the present invention at three typical high, medium and low frequency points in the 4.8-5GHz frequency band;

[0026] Fig.11 It is a standing wave matching diagram of the antenna provided by the present invention. [Specific implementation method]

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] refer to Figures 1 to 3 In this embodiment, the omnidirectional antenna 100 includes a dielectric plate 11, and a first antenna component and a second antenna component printed on the front and back sides of the dielectric plate 11, respectively.

[0029] The first antenna assembly includes a first connecting member 21 and two first dipoles 23. The first dipole 23 is U-shaped and includes a transverse portion 24 and a first dipole arm 25 and a second dipole arm 26 extending from both ends of the transverse portion 24. The first connecting member 21 connects the transverse portions of the two first dipoles 23.

[0030] The second antenna assembly includes a second connecting member 31 and two second dipoles 33. The second dipole 33 is U-shaped and includes a transverse portion 34 and a third dipole arm 35 and a fourth dipole arm 36 extending from two ends of the transverse portion 34. The second connecting member 31 connects the transverse portions of the two second dipoles 23.

[0031] The first vibrator 23 and the second vibrator 33 are both asymmetric shapes. The first connecting member 21 overlaps with the second connecting member 31 , and the first vibrator 23 and the second vibrator 33 partially overlap.

[0032] The antenna provided in this embodiment has a first antenna component and a second antenna component disposed on the front and back of a dielectric plate 11 (such as a PCB), and the vibrators 23 and 33 of the antenna components are asymmetric patterns, and the vibrators 23 and 33 on the front and back of the dielectric plate 11 do not completely overlap, so that the working frequency band of the antenna can meet the various frequency band requirements of telecom operators. Moreover, within the entire frequency band, the roundness is good and the gain is high. This type of antenna is particularly suitable for hotspot coverage and terminal receiving equipment, and can be applied to 5G full-band omnidirectional antennas.

[0033] In this embodiment, the widths of the first pendulum arm 25, the second pendulum arm 26, the third pendulum arm 35 and the fourth pendulum arm 36 are the same, preferably, the width is between 1.5 and 2.5 mm, more preferably 2 mm. The lengths of the first pendulum arm 25 and the second pendulum arm 26 are different, and the lengths of the third pendulum arm 35 and the fourth pendulum arm 46 are different.

[0034] As an alternative, the asymmetry and incomplete overlap can be achieved by different widths or width variations of the dipole arms 25 , 26 , 35 and 36 .

[0035] In this embodiment, the length of the first dipole arm 25 is shorter than that of the second dipole arm 26 , and the length of the third dipole arm 35 is shorter than that of the fourth dipole arm 36 .

[0036] In this embodiment, the U-shaped openings of the two first vibrators 23 face the same direction. The U-shaped openings of the two second vibrators 33 face the same direction. The first connecting member 21 overlaps with the second connecting member 31, and the transverse portion 24 of the first vibrator 23 overlaps with the transverse portion 34 of the second vibrator 33. As an alternative, the transverse portion 24 of the first vibrator 23 and the transverse portion 34 of the second vibrator 33 are 1 to 2 mm apart along the extension direction of the first connecting member 21.

[0037] In this embodiment, the U-shaped opening of the second vibrator 33 is in the opposite direction to the U-shaped opening of the first vibrator 23. However, the present invention is not limited to this embodiment. For example, the U-shaped opening of the second vibrator 33 may also be in the same direction as the U-shaped opening of the first vibrator 23.

[0038] It is understandable that the number of the first dipole 23 and the second dipole 33 is not limited to two, but can be 1 or more than 2. Preferably, the number of the first dipole 23 of the first antenna assembly is in the range of 2 to 10; the number of the second dipole 33 of the second antenna assembly is in the range of 2 to 10.

[0039] refer to Figure 4 The first antenna component and the second antenna component are printed on the two side surfaces of the dielectric plate 11 respectively. The antenna component can protrude slightly from the side surface or be flush with the surface. This structure has the advantages of compact structure, easy mass production, easy to ensure processing accuracy and performance consistency.

[0040] Figures 5 to 10 The data graphs after the performance parameters of the antenna provided by the present invention are tested by the test software. In these graphs, the horizontal axis is the angle, the vertical axis is the electric field power amplitude, and the two-dimensional graph of the antenna spatial radiation energy distribution is displayed, where:

[0041] Figure 5 It is the horizontal plane radiation pattern of the antenna provided by the present invention at three typical high, medium and low frequency points in the frequency band of 2496-2960MHz;

[0042] Figure 6 It is the vertical plane radiation pattern of the antenna provided by the present invention at three typical high, medium and low frequency points in the frequency band of 2496-2960MHz;

[0043] Figure 7 It is the horizontal plane radiation pattern of the antenna provided by the present invention at three typical high, medium and low frequency points in the 3.3-3.6 GHz frequency band;

[0044] Figure 8 It is the vertical plane radiation pattern of the antenna provided by the present invention at three typical high, medium and low frequency points in the 3.3-3.6 GHz frequency band;

[0045] Fig. 9 It is the horizontal plane radiation pattern of the antenna provided by the present invention at three typical high, medium and low frequency points in the 4.8-5 GHz frequency band;

[0046] Fig.10 It is the vertical plane radiation pattern of the antenna provided by the present invention at three typical high, medium and low frequency points in the 4.8-5 GHz frequency band.

[0047] from Figures 5 to 10 It can be seen that the working frequency band of the antenna provided by the present invention can meet the various frequency band requirements of telecom operators. It has good roundness and high gain within the mainstream frequency band, is suitable for hotspot coverage and terminal receiving equipment, and can be used for 5G full-band omnidirectional antennas.

[0048] Fig.11 It is a standing wave matching diagram. It can be seen from the figure that good matching is achieved in the three frequency bands of 2496-2690MHz, 3.3-3.6GHz and 4.8-5GHz. The above embodiments only express the preferred implementation mode of the present invention. The description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, several variations and improvements can be made, such as combining different features in various embodiments, etc., which all belong to the scope of protection of the present invention.

Claims

1. An omnidirectional antenna, comprising a dielectric plate (11), a first antenna component and a second antenna component respectively printed on two side surfaces of the dielectric plate; characterized in that: The first antenna assembly comprises a first dipole (23), the first dipole (23) is U-shaped, comprises a first transverse portion (24), and a first dipole arm (25) and a second dipole arm (26) extending from two ends of the first transverse portion (24), and the first dipole (23) is an asymmetric shape; The second antenna assembly comprises a second dipole (33), the second dipole (33) is U-shaped, comprises a second transverse portion (34), and a third dipole arm (35) and a fourth dipole arm (36) extending from two ends of the second transverse portion (34), and the second dipole (33) is an asymmetric shape; The first vibrator (23) and the second vibrator (33) partially overlap; The first antenna assembly comprises a first connecting member (21) and two first oscillators (23); the U-shaped openings of the two first oscillators (23) face the same direction, and the first connecting member (21) connects the first transverse portions (24) of the two first oscillators (23); The second antenna assembly comprises a second connecting member (31) and two second oscillators (33); the U-shaped openings of the two second oscillators (33) face the same direction, and the second connecting member (31) connects the second transverse portions (34) of the two second oscillators (33); The U-shaped openings of the first vibrator (23) and the second vibrator (33) are oriented in opposite directions.

2. The omnidirectional antenna according to claim 1, characterized in that: The widths of the first dipole arm (25) and the second dipole arm (26) are the same or different.

3. The omnidirectional antenna according to claim 1, characterized in that: The lengths of the first vibrator arm (25) and the second vibrator arm (26) are the same or different.

4. The omnidirectional antenna according to claim 1, characterized in that: The width of the first vibrator arm (25) or the second vibrator arm (26) is 1.5-2.5 mm.

5. The omnidirectional antenna according to claim 1, characterized in that: The width of the third vibrator arm (35) or the fourth vibrator arm (36) is 1.5-2.5 mm.

6. The omnidirectional antenna according to claim 1, characterized in that: The width of the first dipole arm (25) or the second dipole arm (26) is fixed or variable.

7. The omnidirectional antenna according to claim 1, characterized in that: The first transverse portion (24) of the first vibrator (23) and the second transverse portion (34) of the second vibrator (33) overlap or are 1 to 2 mm apart.

8. The omnidirectional antenna according to claim 1, characterized in that: The first antenna component and the second antenna component are aligned with the surface of the dielectric plate (11).

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