Decoupling oscillator and base station antenna

Abstract

The utility model provides a decoupling oscillator and a base station antenna, the decoupling oscillator comprises a balun and a radiation area, the radiation area is located at one end of the balun, and the radiation area comprises at least one notch structure; the notch structure comprises a first open-circuit groove and a second open-circuit groove, and one end of the first open-circuit groove extends around one end of the second open-circuit groove. When the decoupling oscillator is used as the low-frequency oscillator of the base station antenna, interference between the low-frequency oscillator and the high-frequency oscillator can be reduced, and therefore the performance of the integrated base station antenna is prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, in particular to a decoupling vibrator and a base station antenna. Background Art

[0002] With the development of communication technology, the demand for antenna resources is increasing. In order to reduce the waste of base station resources, integrated base station antennas have become the mainstream direction, that is, multiple frequency bands are integrated into the same antenna. In the prior art, the vibrators of different frequency bands are usually staggered, and the size and height of the low-frequency vibrator are larger than the high-frequency vibrator. However, the low-frequency vibrator will interfere with the performance of the high-frequency vibrator, thereby affecting the antenna performance. Therefore, a vibrator structure that can reduce the interference between the low-frequency vibrator and the high-frequency vibrator is needed. Utility Model Content

[0003] The utility model aims to provide a decoupling vibrator and a base station antenna, which can reduce the interference between the low-frequency vibrator and the high-frequency vibrator and avoid affecting the performance of the integrated base station antenna.

[0004] The technical solution provided by the utility model is as follows:

[0005] In a first aspect, the utility model provides a decoupling oscillator, comprising:

[0006] Barron;

[0007] A radiation region, located at one end of the balun, and the radiation region includes at least one notch structure;

[0008] The trap structure includes a first open slot and a second open slot, and one end of the first open slot extends around one end of the second open slot.

[0009] In some embodiments, the radiation zone includes at least one radiation unit, and at least one of the radiation units is provided with the trap structure.

[0010] In some embodiments, the radiation unit includes at least one radiation arm, the radiation arm is connected to the balun and fed by a feeding portion of the balun.

[0011] The wave trap structure is disposed on at least one of the radiation arms, and the other end of the first open slot and the other end of the second open slot are opened alternately on both sides of the radiation arm.

[0012] In some embodiments, the lengths of the first open slot and the second open slot are both within a preset range of one quarter wavelength of a decoupling frequency.

[0013] In some embodiments, the lengths of the first open-circuit slot and the second open-circuit slot are different to generate multiple resonance points.

[0014] In some embodiments, the widths of the first open groove and the second open groove are the same or different to adjust the capacitance value.

[0015] In some embodiments, one end of the first open groove and one end of the second open groove are disposed around each other.

[0016] In some embodiments, the radiation zone includes at least two radiation units, each of which is isolated from each other and uniformly surrounds one end of the balun.

[0017] In some embodiments, the number of the radiation units is four.

[0018] In some embodiments, each of the radiation units includes a radiation arm, and one end of the radiation arm is connected to the balun, and the other end of the radiation arm extends outward.

[0019] In some implementations, each of the radiation units includes two radiation arms, and an open-circuit branch is formed between the notch structures on the two radiation arms of each of the radiation units.

[0020] In some embodiments, the two radiation arms of each radiation unit are vertically arranged, and the two radiation arms of each radiation unit are connected at one end and connected to the balun through a connecting arm at the other end.

[0021] In a second aspect, the present application provides a base station antenna, including:

[0022] High frequency oscillators arranged in an array;

[0023] An array of low-frequency oscillators, wherein the low-frequency oscillators adopt the decoupling oscillators of the first aspect;

[0024] In the vertical direction, the low-frequency element is located above the high-frequency element and at least partially overlaps with it.

[0025] According to a decoupling vibrator and base station antenna provided by the utility model, a notch structure is set on the radiation area, and the notch structure includes a first open slot and a second open slot, and one end of the first open slot extends around one end of the second open slot, which can form a combination circuit of multiple capacitors and multiple inductors, so that the high-frequency current can resonate when passing through the radiation arm to form a high-impedance circuit, thereby attenuating or eliminating the high-frequency signal to achieve a decoupling effect, so that when the decoupling vibrator is used as a low-frequency array of the base station antenna, it can reduce the interference between the low-frequency vibrator and the high-frequency vibrator, and avoid affecting the performance of the integrated base station antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The preferred implementation scheme will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present solution.

[0027] Figure 1 This is a schematic diagram of the overall structure of a decoupling oscillator according to an embodiment of the utility model;

[0028] Figure 2 This is a schematic diagram of a top view of a decoupling vibrator according to an embodiment of the utility model;

[0029] Figure 3 It is a schematic diagram of a notch structure of an embodiment of the utility model;

[0030] Figure 4 This is a schematic diagram of the electric field of a pure conductor in an embodiment of the utility model after adding a trap structure under a 2.7 GHz electric field;

[0031] Figure 5 This is a schematic diagram of the electric field of a pure conductor in an embodiment of the utility model after adding a trap structure under a 1.7 GHz electric field;

[0032] Figure 6 This is a schematic diagram of the electric field of a pure conductor in an embodiment of the utility model after adding a trap structure under a 0.96GHz electric field;

[0033] Figure 7 This is a schematic diagram of the electric field of a pure conductor in an embodiment of the utility model after adding a trap structure under a 0.61 GHz electric field;

[0034] Figure 8 It is a schematic diagram of the performance of the notch structure in different frequency bands of the embodiment of the utility model;

[0035] Fig. 9 It is a schematic diagram of a high- and low-frequency combination array with a decoupling vibrator loaded as a low-frequency array in one embodiment of the utility model;

[0036] Fig.10 This is a schematic diagram of a high- and low-frequency combination array using a conventional low-frequency array in the prior art;

[0037] Fig.11 It is a high frequency directional pattern of a high and low frequency combination array using a conventional low frequency array in the prior art;

[0038] Fig.12 It is a high frequency directional diagram of a high and low frequency combination array with a decoupling vibrator loaded as a low frequency array in one embodiment of the utility model;

[0039] Fig.13 It is a low-frequency directional diagram of a high- and low-frequency combination array with a loaded decoupling vibrator as a low-frequency array in one embodiment of the utility model;

[0040] Fig.14 It is a schematic diagram of the overall structure of a decoupling oscillator of another embodiment of the utility model;

[0041] Fig.15 This is another high-frequency directional pattern of a high-low frequency combination array of the utility model using a conventional low-frequency array;

[0042] Fig.16 It is a high frequency directional diagram of a high and low frequency combination array with a decoupling vibrator loaded as a low frequency array in another embodiment of the utility model;

[0043] Fig.17 It is a low-frequency directional diagram of a high- and low-frequency combination array with a decoupling vibrator loaded as a low-frequency array in another embodiment of the utility model;

[0044] Fig.18 It is a schematic diagram of the base station antenna structure of an embodiment of the utility model. DETAILED DESCRIPTION

[0045] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0046] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0047] With the development of communication technology, the demand for antenna resources is increasing. In order to reduce the waste of base station resources, integrated base station antennas have become the mainstream direction, that is, multiple frequency bands are integrated in the same antenna. In the prior art, the vibrators of different frequency bands are usually staggered and arrayed, and the size and height of the low-frequency vibrator are larger than the high-frequency vibrator. However, the low-frequency vibrator will interfere with the performance of the high-frequency vibrator, thereby affecting the antenna performance. To solve the above problems, traditional solutions are mainly divided into two types. One is to use physical isolation, that is, high and low frequency vibrators are nested or high-frequency vibrators are arrayed in the empty space of the low-frequency radiation arm; the other is to use inductor lines to suppress high-frequency currents. However, both of the above technical solutions have certain defects. The first method limits the high-frequency array spacing to a multiple relationship with the low-frequency array spacing. The second method of filtering circuits can only be implemented in the form of printed circuit boards due to the limited width of the inductor equivalent branch line, and the current density is large due to the thin inductor line, which is easy to cause intermodulation instability. Based on the above considerations, the present application designs a trap structure. The essence of the trap structure is a resonant circuit formed by a capacitor and an inductor in parallel. By adjusting the size of the trap structure, the high-frequency current resonates when passing through the low-frequency radiation arm, forming a high-impedance circuit, thereby causing the high-frequency signal to attenuate or disappear, achieving a decoupling effect. By loading the trap structure onto the radiation arm of the low-frequency array, the interference between the low-frequency vibrator and the high-frequency vibrator can be reduced; and the processing difficulty is relatively low, and many forms can be realized, such as PCB boards, die-casting, sheet metal stamping and other forms. It avoids the inductor line being too thin, so that the low-frequency current density can be relatively reduced, which is more advantageous for the intermodulation stability design. The following will be a specific analysis of this design in conjunction with the accompanying drawings:

[0048] In one embodiment, the utility model provides a decoupling vibrator, including a balun and a radiation zone, wherein the balun has a feeding portion, and the feeding portion is used to feed the vibrator; the radiation zone is located at one end of the balun, and the radiation zone includes at least one trap structure; the trap structure includes a first open slot and a second open slot, and one end of the first open slot extends around one end of the second open slot. For example, Figure 1 A decoupling oscillator 100 of a structural form is shown, comprising a balun 10 and a radiation area located at the top of the balun, the balun 10 has a feeding portion 20, and the radiation area comprises a plurality of trap structures 40. The specific structure of the trap structure 40 is as follows Figure 3 As shown, it includes a first open slot 41 and a second open slot 42, and one end of the first open slot 41 extends around one end of the second open slot 42, so that the first open slot 41 and the second open slot 42 can form a combination circuit of multiple capacitors and multiple inductors. When a high-frequency current is generated in the radiation area, the trap structure 40 can resonate to form a high-impedance circuit, thereby attenuating or eliminating the high-frequency signal to achieve a decoupling effect. For another example, Fig.14Another structural form of a decoupling oscillator 110 is shown, including a balun 11 and a radiation area located on the top of the balun. The balun 11 has a feeding part 21, and the radiation area also has a plurality of trap structures 40. When the decoupling oscillator 110 generates a high-frequency current, the trap structure 40 can also attenuate or eliminate the high-frequency signal.

[0049] The present application sets a trap structure in the radiation zone of the vibrator. The trap structure includes a first open slot and a second open slot, and one end of the first open slot extends around one end of the second open slot, so as to form a combination circuit of multiple capacitors and multiple inductors, so that the high-frequency current can resonate when passing through the radiation zone to form a high-impedance circuit, thereby attenuating or eliminating the high-frequency signal to achieve a decoupling effect, so that when the decoupling vibrator is used as a low-frequency array of a base station antenna, the interference between the low-frequency vibrator and the high-frequency vibrator can be reduced to avoid affecting the performance of the integrated base station antenna.

[0050] In one embodiment, the radiation zone includes at least one radiation unit, and at least one radiation unit is provided with a notch structure. In the present application, the radiation zone is composed of radiation units, and the radiation zone includes at least one radiation unit. The present application does not limit the specific number of radiation units. For example, Figure 1 and Figure 2 The decoupling oscillator 100 of a structural form shown includes four radiating units. Fig.14 The decoupling oscillator 110 of a structural form shown also includes four radiating units. In other embodiments, the radiating units can also be set to other numbers, such as three, five, etc. When the radiation area includes at least two radiating units, the radiating units are isolated from each other to avoid mutual influence between the radiating units. Preferably, the radiating units are arranged on the same plane, and the plane is arranged perpendicular to the balun, and the radiating units are evenly surrounded at one end of the balun, and the radiating units are isolated from each other by DC.

[0051] In one embodiment, the radiation unit includes at least one radiation arm, which is connected to the balun and fed by the feeding part of the balun. A notch structure is provided on at least one radiation arm, and the other end of the first open slot and the other end of the second open slot are alternately opened on both sides of the radiation arm.

[0052] In the present application, each radiating unit includes at least one radiating arm, for example, Figure 1 and Figure 2 In the decoupling oscillator 100 of a structural form shown, each radiating unit includes two radiating arms (301 and 302); as another example, Fig.14A decoupling oscillator 110 of a structural form is shown, and each radiating unit includes a radiating arm 31. The present application does not limit the specific number of radiating arms of each radiating unit, and can be adjusted according to actual needs. The radiating arm is connected to the balun and fed through the feeding part of the balun. At least one radiating arm is provided with a notch structure to ensure that the radiating unit can achieve a decoupling effect. A notch structure is provided on each radiating arm.

[0053] In a specific implementation, please refer to the attached manual. Figure 1 and attached Fig.14 Each radiating arm is provided with at least one set of trap structures. Figure 3 Each group of trap structures 40 includes a first open slot 41 and a second open slot 42. One end (inner end) of the first open slot 41 extends around one end (inner end) of the second open slot 42. The other end (outer end) of the first open slot 41 and the other end (outer end) of the second open slot 42 are alternately opened on both sides of the corresponding radiation arm to form a multi-capacitor and multi-inductor combination circuit. The essence of the trap structure 40 is a resonant circuit formed by capacitors and inductors in parallel. Its working principle can be expressed as follows: Wherein f is the resonant frequency of the circuit. By adjusting the size of the trap structure 40, the high-frequency current can resonate when passing through the low-frequency radiation arm and form a high-impedance circuit, thereby attenuating or eliminating the high-frequency signal to achieve a decoupling effect.

[0054] The present application does not limit the extension form of one end of the first open groove around one end of the second open groove. In a specific implementation, please continue to refer to the attached specification. Figure 3 , one end of the first open slot 41 and one end of the second open slot 42 are arranged to surround each other, so that the decoupling effect of the trap structure 40 is better. The first open slot 41 and the second open slot 42 both include a straight slot portion and a curved slot portion. In this embodiment, the straight slot portion is linear, and the curved slot portion is arc-shaped or semicircular; the present disclosure does not limit the specific shapes of the straight slot portion and the curved slot portion. In other embodiments, the straight slot portion and the curved slot portion can also be set to other shapes. It is only necessary to make the outer ends of the two straight slot portions of each group of trap structures 40 open on the two sides of the radiation arm respectively, and the inner ends of the straight slot portions are respectively connected to the corresponding curved slot portions, and the two corresponding curved slot portions can be in a mutually embracing shape without contacting each other.

[0055] In one embodiment, the lengths of the first open slot and the second open slot are both within a preset range of a quarter wavelength of the decoupling frequency. The length settings of the first open slot and the second open slot of the present application can be adjusted according to the specific use environment of the vibrator. After determining the decoupling frequency of the vibrator, the lengths of the first open slot and the second open slot can be set to be within a preset range of a quarter wavelength of the decoupling frequency. Specifically, the lengths of the first open slot and the second open slot can be within the range of a quarter wavelength of the decoupling frequency plus or minus a preset length. Under this setting condition, when the high-frequency current passes through the low-frequency radiation arm, the high-frequency signal attenuation effect is better. Preferably, the lengths of the first open slot and the second open slot are set to be unequal, and multiple open slots of the same or different lengths are included, so that when the high-frequency current resonates through the low-frequency radiation arm, multiple resonance points can be generated, thereby expanding the notch bandwidth and achieving a better decoupling effect. Preferably, the widths of the first open slot and the second open slot are set to be the same or different, so that the capacitance value can be adjusted according to demand, thereby adjusting the decoupling frequency and bandwidth.

[0056] In order to verify the decoupling effect of the above-mentioned trap structure, the present application conducted a test, specifically adding the above-mentioned trap structure to a pure conductor and placing it under electric fields of different frequency bands. For example, Figure 4 The electric field diagram of a pure conductor with a notch structure added under a 2.7GHz electric field is shown; for example, Figure 5 The electric field diagram of a pure conductor with a notch structure added under a 1.7GHz electric field is shown; for example, Figure 6 The electric field diagram of a pure conductor with a notch structure added to it at 0.96GHz is shown; for example, Figure 7 The electric field diagram of a pure conductor under a 0.61 GHz electric field after a trap structure is added is shown. Figure 8 The performance diagram of the notch structure in different frequency bands is shown. It can be seen that after the notch structure is introduced, the low-frequency current is transmitted normally on the radiation arm, and the high frequency produces obvious resonance at the position of the open slot, thereby suppressing the current transmission. Due to the different lengths of the open slot, resonance is generated at different frequency points, which expands the bandwidth. The resonant structure has little effect on the low-frequency impedance, so the difficulty of low-frequency impedance matching has not increased.

[0057] The present invention provides a trap structure on the radiation arm of the radiation zone of the vibrator. The trap structure is essentially a resonant circuit formed by capacitors and inductors in parallel. By providing a plurality of open slots on the radiation arm, the outer ends of each open slot are alternately opened on both sides of the radiation arm, and the inner ends of each open slot are in a mutually embracing shape and do not touch each other, so that a combination circuit of multiple capacitors and multiple inductors can be formed, so that high-frequency current can resonate when passing through the radiation arm, forming a high-impedance circuit, thereby attenuating or disappearing the high-frequency signal, achieving a decoupling effect, so that the decoupling vibrator can reduce the interference between the low-frequency vibrator and the high-frequency vibrator when used as a low-frequency array of a base station antenna, and avoid affecting the performance of the integrated base station antenna. In addition, after the introduction of the trap structure, the precision requirements for the slot size of the open slot are relatively low, the processing difficulty is relatively low, and a variety of forms can be realized, such as PCB board, die casting, sheet metal stamping, etc., which can avoid the inductor line being too thin, so that the low-frequency current density can be relatively reduced, and the intermodulation stability design is more advantageous.

[0058] In a specific implementation, please refer to the attached manual. Figure 1 and 2 The present application discloses a decoupling oscillator 100, which includes a balun 10 and a radiation zone, the balun 10 has a feeding part 20, and the feeding part 20 is used to feed the oscillator; the radiation zone includes four radiation units, each of which includes two radiation arms, namely a first radiation arm 301 and a second radiation arm 302; the first radiation arm 301 and the second radiation arm 302 are vertically arranged, and the first end of the first radiation arm 301 is connected to the first end of the second radiation arm 302, and the second end of the first radiation arm 301 and the second end of the second radiation arm 302 are both connected to the balun 10 through a connecting arm 303; at least one group of trap structures 40 is arranged on each radiation arm, and each group of trap structures 40 includes a first open slot 41 and a second open slot 42, the outer ends of each open slot are alternately opened on both sides of the radiation arm, and the inner ends of each open slot are arranged around each other and do not contact each other, so as to form a multi-capacitor and multi-inductor combination circuit.

[0059] Preferably, in order to improve the decoupling effect of the oscillator, taking a single radiating unit as an example, the first radiating arm 301, the second radiating arm 302 and the connecting arm 303 of each radiating unit can form a square structure, and the trap structures 40 on the first radiating arm 301 and the second radiating arm 302 of each radiating unit are symmetrically arranged, and an open branch is formed between the two groups of trap structures 40 on the first radiating arm 301 and the second radiating arm 302 of each radiation area; taking the entire radiation area as an example, the four radiating units can form a large square structure, so that the trap structures 40 of each radiating unit are centrally symmetrical, thereby improving the decoupling effect.

[0060] When the decoupling oscillator of this solution is used in a base station antenna of a high-low frequency combination array, the low-frequency array of the base station antenna adopts the decoupling oscillator of this solution, and the high-frequency oscillator adopts a conventional oscillator. In order to verify the superiority of using the decoupling oscillator of this application as the low-frequency array of the base station antenna of the high-low frequency combination array, this application compares the high-frequency direction of the high-low frequency combination array loaded with the decoupling oscillator as the low-frequency array and the high-low frequency combination array loaded with the conventional low-frequency array. Please refer to the attached manual Fig. 9 The low-frequency sub-array is located above the high-frequency sub-array (attached Fig. 9 Only one low-frequency array and three high-frequency oscillators are shown). By using decoupling oscillators as the low-frequency array in the base station antenna, the interference between the low-frequency oscillators and the high-frequency oscillators can be effectively reduced. To demonstrate the excellence of this solution, please refer to the attached manual. Fig.10 , shows a base station antenna with the same high and low frequency combination array, but using a conventional low frequency array, attached Fig.11 The high-frequency pattern of the high- and low-frequency combination array loaded with a conventional low-frequency array is shown in the figure. Fig.12 The high-frequency radiation pattern of the high-low frequency combination array with decoupling oscillators as low-frequency array is shown. Fig.13 The low-frequency radiation pattern of the high-low frequency combination array loaded with decoupling oscillators as the low-frequency array is shown. By comparison Figures 11 to 13 It can be seen that when a conventional low-frequency vibrator is loaded, the high-frequency directional pattern is severely distorted, but after the decoupling vibrator of the present application is loaded as a low-frequency vibrator, the distortion can be significantly improved.

[0061] In another specific implementation, please refer to the attached Fig.14 The present application discloses a decoupling oscillator 110, which includes a balun 11 and a radiation zone, the balun 11 has a feeding part 21, and the feeding part 21 is used to feed the oscillator; the radiation zone includes four radiation units, each of which includes a radiation arm 31, and one end of the radiation arm 31 is connected to the balun 11, and the other end extends outward; each radiation arm 31 is provided with at least one group of trap structures 40, each group of trap structures 40 includes a first open slot 41 and a second open slot 42, the outer ends of each open slot are alternately opened on both sides of the radiation arm 31, and the inner ends of each open slot are arranged around each other and do not contact each other, so as to form a multi-capacitor and multi-inductor combination circuit.

[0062] When the decoupling oscillator of this solution is used in a base station antenna of a high-low frequency combination array, the low-frequency array of the base station antenna adopts the decoupling oscillator of this solution, and the high-frequency oscillator adopts a conventional oscillator. In order to verify the superiority of using the decoupling oscillator of this application as the low-frequency array of the base station antenna of a high-low frequency combination array, this application compares the high-frequency direction of a high-low frequency combination array loaded with a decoupling oscillator as the low-frequency array and a high-low frequency combination array loaded with a conventional low-frequency array. Fig.15The high-frequency pattern of the high- and low-frequency combination array loaded with a conventional low-frequency array is shown in the figure. Fig.16 The high-frequency radiation pattern of the high-low frequency combination array with decoupling oscillators as low-frequency array is shown. Fig.17 The low-frequency radiation pattern of the high-low frequency combination array loaded with decoupling oscillators as the low-frequency array is shown. By comparison Figures 15 to 17 It can be seen that when the conventional low-frequency oscillator is loaded, the high-frequency radiation pattern is seriously distorted. After loading the decoupling oscillator as the low-frequency oscillator, the distortion can be significantly improved.

[0063] In one embodiment, please refer to the attached manual Fig.18 The present application provides a base station antenna, comprising: high-frequency oscillators arranged in an array and low-frequency oscillators arranged in an array, the low-frequency array adopts the decoupling oscillators described in the aforementioned embodiment; in the vertical direction, the low-frequency array is located above the high-frequency oscillators and at least partially overlaps.

[0064] By using the decoupling oscillator as the low-frequency array of the base station antenna, the high-frequency current can resonate when passing through the low-frequency radiation arm, forming a high-impedance circuit, causing the high-frequency signal to attenuate or disappear, thereby achieving a decoupling effect, thereby reducing the interference between the low-frequency oscillator and the high-frequency oscillator and avoiding affecting the performance of the integrated base station antenna.

[0065] Please continue to refer to the instruction manual Fig.18 In a specific implementation, each low-frequency array corresponds to four high-frequency oscillators arranged in a square; the number of radiating units of the decoupling oscillator is four, and each radiating unit includes two radiating arms, and the radiating arms of the four radiating units form a large square structure, and the four corner points of the square structure are respectively located directly above the center of the corresponding high-frequency oscillator.

[0066] In another specific implementation, the number of the radiation units of the decoupling oscillator is four, and each radiation unit includes a radiation arm, and the outer ends of the four radiation arms are respectively located directly above the center of the corresponding high-frequency oscillator.

[0067] It should be noted that the above embodiments can be freely combined as needed. The above is only a preferred implementation of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims

1. A decoupling oscillator, characterized in that: include: Barron; A radiation region, located at one end of the balun, and the radiation region includes at least one notch structure; The trap structure includes a first open slot and a second open slot, wherein one end of the first open slot extends around one end of the second open slot.

2. A decoupling oscillator according to claim 1, characterized in that: The radiation zone includes at least one radiation unit, and at least one radiation unit is provided with the trap structure.

3. A decoupling oscillator according to claim 2, characterized in that: The radiation unit includes at least one radiation arm, the radiation arm is connected to the balun and is fed by a feeding part of the balun, The wave trap structure is disposed on at least one of the radiation arms, and the other end of the first open slot and the other end of the second open slot are opened alternately on both sides of the radiation arm.

4. A decoupling oscillator according to any one of claims 1 to 3, characterized in that: The lengths of the first open slot and the second open slot are both within a preset range of a quarter wavelength of a decoupling frequency.

5. A decoupling oscillator according to claim 4, characterized in that: The lengths of the first open slot and the second open slot are different to generate multiple resonance points.

6. A decoupling oscillator according to claim 4, characterized in that: The widths of the first open groove and the second open groove are the same or different to adjust the capacitance value.

7. A decoupling oscillator according to any one of claims 1-3, 5-6, characterized in that: One end of the first open groove and one end of the second open groove are arranged to surround each other.

8. A decoupling oscillator according to claim 3, characterized in that: The radiation area includes at least two radiation units, each of which is isolated from each other and uniformly surrounds one end of the balun.

9. A decoupling oscillator according to claim 8, characterized in that: The number of the radiation units is four.

10. A decoupling oscillator according to claim 9, characterized in that: Each of the radiation units includes a radiation arm, and one end of the radiation arm is connected to the balun, and the other end of the radiation arm extends outward.

11. A decoupling oscillator according to claim 9, characterized in that: Each of the radiation units includes two radiation arms, and an open-circuit branch is formed between the notch structures on the two radiation arms of each of the radiation units.

12. A decoupling oscillator according to claim 11, characterized in that: The two radiation arms of each radiation unit are vertically arranged, and one end of the two radiation arms of each radiation unit is connected, and the other end is connected to the balun through a connecting arm.

13. A base station antenna, characterized in that: include: High frequency oscillators arranged in an array; An array-arranged low-frequency vibrator, wherein the low-frequency vibrator is a decoupling vibrator as claimed in any one of claims 1 to 12; In the vertical direction, the low-frequency vibrator is located above the high-frequency vibrator and at least partially overlaps with it.

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