Antenna device

Abstract

The application discloses an antenna device, which is provided with a decoupling device at the side of an antenna array and corresponding to the position of a radiation arm, so as to reduce harmonic interference and suppress scattering, thereby solving the mutual coupling and interference problems among frequency bands of a multi-array antenna, and because the decoupling device is arranged in a spaced manner with the antenna array, that is, not arranged in an integrated manner, the setting mode or structure of the decoupling device is more flexible.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wireless communication equipment, in particular to an antenna device. BACKGROUND

[0002] Multi-band multi-array antenna is mainly associated with mobile communication multi-standard and multi-mode. The more the communication standards and modes are, the more complex the antenna is. However, due to the constraints of antenna installation space and wind load and other factors, the antenna must be designed to be compact and integrated. The actual distance between the internal frequency band dipoles of the antenna is far less than the theoretically required distance (related to the corresponding frequency band wavelength), which leads to the intensification of electromagnetic coupling between the dipoles of each frequency band and the serious deterioration of the indicators. SUMMARY

[0003] The main purpose of the present application is to provide an antenna device which can reduce harmonic interference and suppress scattering, thereby solving the mutual coupling and interference problems between frequency bands of multi-array antenna.

[0004] To achieve the above purpose, the present application provides an antenna device, comprising:

[0005] an antenna array having a radiation arm; and

[0006] a decoupling device arranged on one side of the antenna array and spaced from the antenna array, the decoupling device corresponding to the radiation arm.

[0007] In an embodiment, the antenna device further comprises a PCB board.

[0008] The antenna array and the decoupling device are arranged on the PCB board and located on different layers of the PCB board.

[0009] In an embodiment, the antenna array and the decoupling device are formed by stamping different metal sheets.

[0010] In an embodiment, the distance between the antenna array and the decoupling device is d, 0.01mm≤d≤1mm.

[0011] In an embodiment, the resonant device comprises a resonant ring corresponding to the radiation arm.

[0012] In an embodiment, the radiation arm is arranged in a ring shape, so that the radiation arm comprises a plurality of side edge portions and a central region enclosed by the plurality of side edge portions.

[0013] The resonant ring comprises a first resonant ring corresponding to the side edge portion.

[0014] In one embodiment, the resonant rings are configured as a plurality of resonant rings, the plurality of resonant rings including a plurality of first resonant rings, the plurality of first resonant rings being disposed corresponding to the plurality of side portions.

[0015] In one embodiment, the plurality of resonant rings further include:

[0016] A second resonant ring is disposed corresponding to the central region of the array arm and located inside the plurality of first resonant rings.

[0017] In one embodiment, the first resonant ring is an open ring or a closed ring; and / or,

[0018] The second resonant ring is a closed loop.

[0019] In one embodiment, the plurality of first resonant rings are arranged in a one-to-one correspondence with the plurality of side portions.

[0020] In one embodiment, at least one first resonant ring is disposed across two adjacent side portions such that the two side portions share a first resonant ring.

[0021] In the technical solution provided by the present invention, a decoupling device is provided on one side of the antenna array and at the position corresponding to the radiating arm, which can reduce harmonic interference and suppress scattering, thereby solving the problem of mutual coupling and interference between the frequency bands of multiple array antennas. Furthermore, since the decoupling device and the antenna array are spaced apart, that is, not integrated, the setting method or structure of the decoupling device is more flexible. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 A top view schematic diagram of a first embodiment of the antenna device provided by the present invention;

[0024] Figure 2 for Figure 1 Partial schematic diagram;

[0025] Figure 3 for Figure 2 A three-dimensional exploded view;

[0026] Figure 4 for Figure 1 A top-view schematic diagram of the antenna array in the middle;

[0027] Figure 5 is a top view of a decoupling device according to the present invention; Figure 1 is a top view of a decoupling device according to the present invention;

[0028] Figure 6 is a top view of a second embodiment of an antenna device according to the present invention;

[0029] Figure 7 is a top view of a third embodiment of an antenna device according to the present invention;

[0030] Figure 8 is a top view of a fourth embodiment of an antenna device according to the present invention;

[0031] Figure 9 is a top view of a fifth embodiment of an antenna device according to the present invention;

[0032] Figure 10 is a first embodiment of a resonant loop for an antenna device according to the present invention;

[0033] Figure 11 is a second embodiment of a resonant loop for an antenna device according to the present invention;

[0034] Figure 12 is a third embodiment of a resonant loop for an antenna device according to the present invention;

[0035] Figure 13 is a top view of a decoupling device according to the present invention; Figure 12 with added dashed boxes;

[0036] Figure 14 is a top view of an antenna device according to the present invention; Figure 1 with polarization directions shown;

[0037] Figure 15 is a fourth embodiment of a resonant loop for an antenna device according to the present invention;

[0038] Figure 16 is a top view of a decoupling device according to the present invention; Figure 15 in another state;

[0039] BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Reference Name Reference Name 100 Antenna arrangement 2 Decoupling arrangement 1 Antenna element 21 Resonant loop 11 Radiating arm 21a First resonant loop 11a Side portion 21b Second resonant loop

[0041] The implementation, functional features and advantages of the present invention will be further explained with reference to the embodiments and the attached drawings. DETAILED DESCRIPTION

[0042] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0043] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0044] In addition, if the embodiments of the present application involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes A solution, or B solution, or A and B solutions. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it. When the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection claimed by the present application.

[0045] The present application provides an antenna device, which will be described below in combination with the drawings.

[0046] Please refer to Figures 1 to 5 In an embodiment of the present application, the antenna device 100 comprises an antenna array 1 and a decoupling device 2, the antenna array 1 has a radiation arm 11, the decoupling device 2 is arranged on one side of the antenna array 1 and spaced from the antenna array 1, and the decoupling device 2 is arranged corresponding to the radiation arm 11.

[0047] In the technical solution provided by the present application, the decoupling device 2 is arranged on one side of the antenna array 1 and corresponding to the radiation arm 11, which can reduce harmonic interference and suppress scattering, thereby solving the problem of mutual coupling and interference between multiple array antennas in the frequency band, and because the decoupling device 2 and the antenna array 1 are arranged in a spaced manner, i.e. not integrally arranged, so that the arrangement or structure of the decoupling device 2 is more flexible.

[0048] The decoupling device 2 is separated from the antenna array 1 and is arranged in a non-limited manner, in an embodiment of the present application, the antenna device 100 further comprises a PCB board, the antenna array 1 and the decoupling device 2 are arranged on the PCB board and are located on different layers of the PCB board, for example, the decoupling device 2 can be etched on the upper copper foil of the PCB and the radiation arm 11 can be etched on the lower copper foil of the PCB, because they are on different layers, the arrangement is more convenient, and different decoupling devices 2 can be arranged according to the shape and number of the radiation arm 11.

[0049] Obviously, the design is not limited to this, in another embodiment of the present application, the antenna array 1 and the decoupling device 2 are formed by stamping different metal sheets, at this time, different decoupling devices 2 can be arranged according to the shape and number of the radiation arm 11, and finally only need to erect the decoupling device 2 on one side of the antenna array 1, for example, the decoupling device 2 can be supported by arranging a support.

[0050] The distance between the antenna array 1 and the decoupling device 2 is d, the value of d cannot be too small or too large, if it is too small, the antenna array 1 and the decoupling device 2 will be in contact, and if it is too large, the coupling effect cannot be achieved, therefore, in an embodiment of the present application, 0.01mm≤d≤1mm.

[0051] The decoupling device 2 comprises a resonant ring 21 arranged corresponding to the radiation arm 11, the resonant ring 21 can be a closed ring as shown in Figure 10 , or a non-closed ring, i.e. an open ring, as shown in Figure 11 and Figure 12 , wherein the open ring also has different forms, can be an open in the middle position as shown in Figure 11 , or an open in a position deviating from the middle as shown in Figure 12 . It should be pointed out here that the open ring and the closed ring have equivalent effects in the present application, both of which form a transmission zero point for the high-frequency current flowing through the low-frequency radiation arm 11, the middle opening and the non-middle opening are related to the frequency of the high-frequency signal to be suppressed, and the purpose of the open ring is more to find a balance point to achieve better effect.

[0052] In an embodiment of the present application, the resonant ring 21 can also be an adjustable resonant ring 210, as shown in Figure 15 and Figure 16As shown, the adjustable resonant ring 210 includes a ring-shaped main body 211 arranged in an open manner, and a sliding sheet 213 arranged at the open side 212 of the ring-shaped main body 211, the sliding sheet 213 can slide along the open side 212 and abut and guide the open side 212, so that the opening of the ring-shaped main body 211 can be closed by sliding the sliding sheet 213, so that the adjustable resonant ring 210 exhibits the characteristics of a closed ring. Obviously, the size of the opening can also be adjusted by adjusting the sliding sheet 213 to suppress different high-frequency signals.

[0053] The number of the radiation arms 11 is multiple, and in the embodiment of the present application, the number of the radiation arms 11 is four, and one decoupling device 2 is arranged corresponding to each radiation arm 11.

[0054] In an embodiment of the present application, the radiation arm 11 is arranged in a ring shape, so that the radiation arm 11 includes multiple side portions 11a and a central region enclosed by the multiple side portions 11a, and the resonant ring 21 includes a first resonant ring 21a arranged corresponding to the side portion 11a to form electromagnetic coupling corresponding to the side portion of the radiation arm 11. In the embodiment of the present application, the resonant ring 21 is arranged in multiple, and the multiple resonant rings 21 include multiple first resonant rings 21a arranged corresponding to the multiple side portions 11a. Further, in the embodiment of the present application, the multiple resonant rings 21 further include a second resonant ring 21b arranged corresponding to the central region of the array arm and located inside the multiple first resonant rings 21a. That is, the first resonant ring 21a can exist independently to form electromagnetic coupling corresponding to one side portion of the radiation arm 11, or multiple first resonant rings 21a can be arranged to correspond to each side portion to improve the bandwidth of the array to suppress high-frequency harmonic signals, and further, the resonant ring 21 further includes a second resonant ring 21b to strengthen the bandwidth of the array to suppress high-frequency harmonic signals.

[0055] The first resonant ring 21a can be an open ring or a closed ring, and / or the second resonant ring 21b is a closed ring:

[0056] As shown in Figure 6 , Figure 8 , Figure 9 and Figure 13 In some embodiments of the present application, the first resonant ring 21a is an open ring, and the opening of the open ring is located at the middle position, and the second resonant ring 21b is a closed ring, and the long side of the open first resonant ring 21a corresponding to the opening (such as Figure 13The first resonant loop 21a is an open loop, and the opening of the open loop is located at a non-middle position. The second resonant loop 21b is a closed loop, and the circumference of the closed loop is approximately equal to one-half of the electrical dimension of the wavelength of the harmonic center frequency.

[0057] As shown in Figure 7 , the first resonant loop 21a is an open loop, and the opening of the open loop is located at a non-middle position. The second resonant loop 21b is a closed loop, and the circumference of the closed loop is approximately equal to one-half of the electrical dimension of the wavelength of the harmonic center frequency.

[0058] In the embodiments of the present application, the plurality of first resonant loops 21a are arranged in one-to-one correspondence with the plurality of side portions 11a. As shown in Figure 6 , Figure 8 and Figure 9 , in some embodiments of the present application, the plurality of first resonant loops 21a are arranged in one-to-one correspondence with the plurality of side portions 11a. Specifically, the number of side portions 11a is four, and the number of first resonant loops 21a is also four. In other embodiments of the present application, at least one first resonant loop 21a is arranged across two adjacent side portions 11a, so that the two side portions 11a share one first resonant loop 21a. As shown in Figure 7 , in this embodiment, one first resonant loop 21a is arranged across two adjacent side portions 11a. Specifically, the first resonant loop 21a includes two portions arranged on the two side portions 11a, and the two portions are connected at an opening.

[0059] As shown in Figure 14 , the antenna array element 1 has two polarization arms, and the dashed line direction of Figure 14 is the polarization direction. Each polarization arm includes two closed resonant loops, i.e., the second resonant loop 21b, which functions to suppress high-frequency signals in the polarization direction of the element.

[0060] The above only describes the preferred embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation based on the inventive concept of the present application, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. An antenna device, characterized in that, include: Antenna array with radiating arms; as well as, A decoupling device is disposed on one side of the antenna array and spaced apart from the antenna array. The decoupling device is disposed corresponding to the radiating arm, and one decoupling device is disposed for each radiating arm. The decoupling device includes a resonant ring corresponding to the radiating arm; The radial arm is arranged in a ring shape, such that the radial arm includes multiple side portions and a central area enclosed by the multiple side portions; The resonant ring is configured as a plurality of rings, the plurality of rings including a plurality of first rings, the plurality of first rings being configured one-to-one with the plurality of side portions, wherein at least one first ring is disposed across two adjacent side portions, such that the two side portions share a first ring, and the first ring is an open ring or a closed ring. The plurality of resonant rings further includes a second resonant ring, which is disposed corresponding to the central region of the radiating arm and located inside the plurality of first resonant rings. The second resonant ring is a closed loop. The antenna array has two polarization arms, each of which includes two second resonant rings.

2. The antenna device as claimed in claim 1, characterized in that, The antenna device also includes a PCB board; Both the antenna array and the decoupling device are mounted on the PCB board and located on different layers of the PCB board.

3. The antenna device as described in claim 1, characterized in that, The antenna array and the decoupling device are formed by stamping different metal sheets.

4. The antenna device according to any one of claims 1 to 3, characterized in that, The distance between the antenna array and the decoupling device is d, where 0.01mm≤d≤1mm.

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