Adjustable oscillator unit and multi-frequency antenna
By designing an adjustable oscillator unit, the problem of multi-band compatibility of existing oscillator structures is solved, realizing the flexibility of frequency band adjustment and improving communication quality, thus meeting the needs of miniaturized and highly reliable communication equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-19
- Publication Date
- 2026-04-03
AI Technical Summary
The existing oscillator structure has a fixed frequency band, making it difficult to achieve multi-band compatibility. This results in large equipment space occupation, severe mutual coupling interference, and reduced communication performance. Furthermore, the separate design increases the size and cost of the equipment.
Design an adjustable oscillator unit, including an oscillator balun, an oscillator radiating body, an adjustment mechanism one, and an adjustment mechanism two. Flexible adjustment of frequency band and frequency zone is achieved through filter stub adjustment components and oscillator adjustment components. An integrated design is adopted to reduce production costs and R&D cycle.
It achieves greater flexibility in frequency band adjustment and improved communication quality, reduces equipment size, lowers production costs, and meets the needs of miniaturized and highly reliable communication equipment.
Smart Images
Figure CN121790742A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of antenna technology, and in particular to an adjustable vibrator element and a multi-frequency antenna. Background Technology
[0002] Currently, various applications such as smartphones, smart wearables, connected vehicles, industrial IoT, and base station communications all require communication equipment to have multi-band compatibility, while also meeting design requirements for miniaturization, lightweight design, low power consumption, and high reliability. For example, smartphones need to support different frequency bands from multiple operators simultaneously, while base stations need to cover multiple frequency bands to achieve wide-area seamless connectivity. These requirements place stringent demands on the integration and anti-interference capabilities of antenna units.
[0003] Currently, most existing vibrator structures operate in fixed frequency bands. To achieve multi-band compatibility, a separate design of "single-frequency antenna stacking" or "antenna + external filter" is generally adopted, but this approach has many insurmountable limitations. Single-frequency antenna stacking occupies a large amount of space, which contradicts the need for device miniaturization, and multiple vibrators are prone to severe mutual coupling interference, leading to a decrease in communication performance. Separate designs increase the size, weight, and manufacturing cost of the device, and insertion loss occurs during signal transmission, affecting communication efficiency. Summary of the Invention
[0004] The present invention aims to provide an adjustable oscillator unit to overcome the shortcomings of the prior art.
[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is: an adjustable oscillator unit, including an oscillator balun, an oscillator radiating body, an adjustment mechanism one, and an adjustment mechanism two. The oscillator radiating body is disposed above the oscillator balun and coupled to it. The adjustment mechanism one is used to adjust the filter stub parameters of the corresponding frequency band, including a variety of different filter stub adjustment components. Identical filter stub adjustment components are grouped in pairs to form filter stub groups. Two groups of identical or different filter stub groups are arranged symmetrically with respect to the center of the oscillator radiating body. The adjustment mechanism two is used to adjust the frequency band of the oscillator's operating frequency band, including a variety of different oscillator adjustment components. Identical oscillator adjustment components are grouped in pairs and arranged diagonally along the oscillator radiating body. The filter stub adjustment components and the oscillator adjustment components are detachably connected to the oscillator radiating body.
[0006] Furthermore, the aforementioned adjustable oscillator unit includes an oscillator body, an oscillator base, a first power supply core, and a second power supply core. The oscillator base is located below the oscillator body and is fixedly connected to the oscillator body. The first power supply core and the second power supply core are fixed inside the oscillator body.
[0007] Furthermore, in the aforementioned adjustable oscillator unit, the balun base is fixedly connected to the balun body via a snap-fit connection. The balun base includes a support plate and a guide support sleeve disposed on the support plate. At least a portion of the lower end of the balun body abuts against the top surface of the support plate, and at least a portion of the lower end of the balun body is inserted into the guide support sleeve. A set of oppositely arranged sides on the support plate are provided with snap-fits, and the balun body is provided with slots that mate with the snap-fits. Two cylindrical feed cells, namely feeder core one and feeder core two, are installed on the balun body and inserted into the guide support holes.
[0008] Furthermore, in the aforementioned adjustable oscillator unit, the balun body is provided with multiple cylinders. Feed core one and feed core two are respectively inserted into one cylinder. Feed core one and feed core two are fixed inside the cylinder by an upper fixing kit at the upper end of the cylinder and a lower fixing kit at the lower end of the cylinder. The upper ends of feed core one and feed core two extend outside the cylinder and are fixedly connected to the balun body by welding. The balun body is provided with mounting grooves that match the extensions at the upper ends of feed core one and feed core two.
[0009] Furthermore, in the aforementioned adjustable oscillator unit, both the upper and lower fixing components are made of plastic, and both the upper and lower fixing components have through support holes in the middle. The support holes are adapted to the shape of the first and second power supply cores. The upper end of the cylinder has a notch, the lower end of the upper fixing component is inserted into the cylinder, and its upper end extends to the outside of the cylinder and abuts against the bottom surface of the notch. The lower fixing component is also inserted into the cylinder, and its lower end has multiple support strips arranged along the outer periphery of the support holes.
[0010] Furthermore, in the aforementioned adjustable oscillator unit, the oscillator radiating body includes a PCB substrate and a copper-plated feed coupling plate, an oscillator arm one, and an oscillator arm two disposed on the PCB substrate. The copper-plated feed coupling plate, the oscillator arm one, and the oscillator arm two are arranged sequentially from the inside to the outside along the oscillator radiating body. The copper-plated feed coupling plate is arranged around the central hole in the middle of the PCB substrate and is coupled to the oscillator balun. The filter stub adjustment component is coupled to the copper-plated feed coupling plate, the oscillator arm one, and the oscillator arm two. The oscillator adjustment component is coupled to the oscillator arm two.
[0011] Furthermore, in the aforementioned adjustable oscillator unit, the copper-clad power-coupled sheet, oscillator arm one, and oscillator arm two are integrated onto the PCB substrate through an etching process, forming an integrated copper-clad structure. Preferably, the copper-clad power-coupled sheet is a near-right angle, positioned along the corner of the square hole in the center of the PCB substrate, and oscillator arm one and oscillator arm two are near-rectangular, with the ends of oscillator arm one and oscillator arm two that are close to each other being tapered.
[0012] Furthermore, in the aforementioned adjustable oscillator unit, the filter stub adjustment component is detachably connected to the PCB substrate of the oscillator radiating body via riveting, snap-fit, or fasteners. The oscillator adjustment component is also detachably connected to the PCB substrate via riveting, snap-fit, or fasteners. All riveting, snap-fit, or fasteners are made of insulating material.
[0013] Furthermore, in the aforementioned adjustable oscillator unit, the filter stub adjustment component includes a PCB board and a copper-clad structure disposed on the PCB board. The copper-clad structure is coupled to a copper-clad power supply coupling plate, an oscillator arm one, and an oscillator arm two. It includes copper-clad component one and copper-clad component two. Two copper-clad components one are provided, positioned opposite each other at the end of the PCB board one near the oscillator balun. The end of the PCB board one away from the oscillator balun has an "8"-shaped outward expansion. Two copper-clad components two are also provided, positioned opposite each other on the outward expansion. The type of filter stub adjustment component can be changed by altering the shapes of copper-clad components one and two. Copper-clad component one is coupled to the copper-clad power supply coupling plate and an oscillator arm one, and copper-clad component two is coupled to an oscillator arm one and an oscillator arm two.
[0014] Furthermore, in the aforementioned adjustable oscillator unit, the copper-clad component one and the copper-clad component two are folded structures composed of multiple turns, and the outer side of each corner of the folded structure is a right angle, a triangle, or an arc. It can be chamfered into a triangle and rounded into an arc.
[0015] Furthermore, in the aforementioned adjustable oscillator unit, the oscillator adjustment component includes a PCB board two and a copper-clad component three disposed on the PCB board two. The copper-clad component three is adapted to the shape of the PCB board two and is coupled to a set of oscillator arms two located at the corner of the oscillator radiation body. The type of oscillator adjustment component can be changed by changing the shape of the copper-clad component three.
[0016] Furthermore, in the aforementioned adjustable oscillator unit, the connecting side of the copper-clad component three is wavy, right-angled, or sawtooth-shaped.
[0017] The present invention also provides a multi-frequency antenna, including at least one of the above-described adjustable vibrator elements, which are mounted on a reflector by fasteners.
[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. It has flexible frequency band adjustment capabilities. The filter stub adjustment component can be used to tune the filter stubs of different frequency bands, and the frequency band of the working frequency band can be adjusted through the oscillator adjustment component. It is suitable for various communication frequency band requirements and has strong versatility. Moreover, it does not require redesign and manufacturing for different frequency bands, which reduces the R&D cycle and production costs. It has good practical value and promotion prospects.
[0019] 2. It adopts an integrated design that combines filtering and radiation functions, resulting in a compact structure, high integration, reduced overall size, and suitability for the miniaturization requirements of communication equipment; 3. The oscillator balun structure is stable, and the power supply core is positioned by a special fixing component to ensure power supply stability. The integrated design of the oscillator radiating body improves radiation performance and enhances the overall system communication quality. Attached Figure Description
[0020] 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 recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the adjustable oscillator unit of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the adjustable oscillator unit of the present invention; Figure 3 This is a top view schematic diagram of the oscillator balun structure of the adjustable oscillator unit of the present invention; Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure at section A; Figure 5 This is a schematic diagram of the main structure of the adjustable oscillator unit of the present invention. Figure 6 This is a schematic diagram of the structure of the filter stub adjustment component of the adjustable oscillator unit of the present invention; Figure 7 This is a schematic diagram of the second structure of the filter stub adjustment component of the adjustable oscillator unit of the present invention; Figure 8 This is a schematic diagram of different frequency band states in Embodiment 1 of the present invention; Figure 9 This is a schematic diagram of different frequency band states in Embodiment 2 of the present invention; In the diagram: 1. Oscillator Balun; 11. Balun Body; 111. Slot; 112. Cylinder; 113. Notch; 12. Balun Base; 121. Support Plate; 122. Guide Support Sleeve; 123. Buckle; 13. Feeder Core 1; 14. Feeder Core 2; 15. Upper Fixing Kit; 16. Lower Fixing Kit; 161. Support Bar; 2. Oscillator radiating body; 21. PCB substrate; 22. Copper-clad feed coupling sheet; 23. Oscillator arm one; 24. Oscillator arm two; 3. Adjustment Mechanism 1; Filter Stub Adjustment Component; 31. PCB Board 1; 32. Copper-Clad Component 1; 33. Copper-Clad Component 2; 3A. Filter Stub Adjustment Component 1; 3B. Filter Stub Adjustment Component 2; 4. Adjustment mechanism II; 41. Copper-plated component III; 4A. Vibrator adjustment component I; 4B. Vibrator adjustment component II. Detailed Implementation
[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0023] Example like Figure 1-7 As shown, an adjustable oscillator unit includes an oscillator balun 1, an oscillator radiating body 2, an adjustment mechanism one, and an adjustment mechanism two. The oscillator radiating body 2 is located above the oscillator balun 1 and is coupled to it. The adjustment mechanism one is used to adjust the filter stub parameters of the corresponding frequency band and includes various different filter stub adjustment components 3. The filter stub adjustment components 3 are detachably connected to the oscillator radiating body 2, and identical filter stub adjustment components 3 are grouped in pairs to form filter stub groups. The two groups of identical or different filter stub groups are arranged symmetrically with respect to the center of the oscillator radiating body 2 and have a filtering function. The adjustment mechanism two is used to adjust the frequency band of the oscillator's operating frequency band and includes various different oscillator adjustment components 4. The oscillator adjustment components 4 are detachably connected to the oscillator radiating body 2, and identical oscillator adjustment components 4 are grouped in pairs and arranged diagonally along the oscillator radiating body 2. By replacing different filter stub adjustment components and different filter stub group combinations, the tuning of filter stubs in different frequency bands can be achieved. By replacing different oscillator adjustment components, the frequency band of the working frequency band can be adjusted, adapting to the needs of various communication frequency bands and having strong versatility.
[0024] In the above structure, the filter stub adjustment component 3 is detachably connected to the PCB substrate 21 of the vibrator radiating body 2 via riveting, snap-fit, or fasteners. The vibrator adjustment component 4 is also detachably connected to the PCB substrate 21 via riveting, snap-fit, or fasteners, making disassembly and assembly convenient and easy to replace. The aforementioned riveting, snap-fit, or fasteners are all made of insulating material. Correspondingly, the PCB substrate 21, the filter stub adjustment component 3, and the vibrator adjustment component 4 are provided with mounting structures for installing the riveting, snap-fit, and fasteners.
[0025] Among them, such as Figure 2-4As shown, the oscillator balun 1 includes a balun body 11, a balun base 12, a first feeder core 13, and a second feeder core 14. The balun base 12 is located below the balun body 11 and is fixedly connected to the balun body 11. The first feeder core 13 and the second feeder core 14 are fixed inside the balun body 11.
[0026] In addition, the main body 11 of the balun is made of die-cast aluminum alloy with tin plating on the surface, which can improve conductivity and oxidation resistance. The balun base 12 is made of plastic by injection molding. The first power supply core 13 and the second power supply core 14 are both made of brass with tin plating on the surface to reduce contact resistance.
[0027] The balun base 12 is fixedly connected to the balun body 11 via a snap-fit connection, forming a stable support structure. Specifically, the balun base 12 includes a support plate 121 and a guide support sleeve 122 disposed on the support plate 121. At least a portion of the lower end of the balun body 11 abuts against the top surface of the support plate 121, and at least a portion of the lower end of the balun body 11 is inserted into the guide support sleeve 122. A set of oppositely arranged sides on the support plate 121 are provided with snap-fits 123, and the balun body 11 is provided with a slot 111 that cooperates with the snap-fits 123, ensuring a secure connection and convenient assembly and disassembly. In this embodiment, two cylinders on the balun body 11, on which feeder core 13 and feeder core 14 are installed, are inserted into the guide support sleeve 122 to improve power supply stability.
[0028] The balun body 11 is provided with multiple cylinders 112. To achieve stable signal transmission, feed core 13 and feed core 2 14 are respectively inserted into a cylinder 112. Feed core 13 and feed core 2 14 are fixed in the cylinder 112 by an upper fixing kit 15 at the upper end of the cylinder 112 and a lower fixing kit 16 at the lower end of the cylinder 112. The upper ends of feed core 13 and feed core 2 14 extend out of the cylinder 112 and are fixedly connected to the balun body 11 by welding. The balun body 11 is provided with mounting grooves that are adapted to the upper extensions of feed core 13 and feed core 2 14 to ensure that the feed cores are accurately and stably positioned and to ensure power supply stability.
[0029] In the above structure, such as Figure 4 As shown, both the upper fixing kit 15 and the lower fixing kit 16 are made of insulating plastic and are elastic. Both the upper fixing kit 15 and the lower fixing kit 16 have through support holes in the middle. The support holes are adapted to the shape of the first power supply core 13 and the second power supply core 14, limiting the position of the power supply core on the balun body 11 and ensuring that the position of the power supply core is accurate and stable. The upper end of the cylinder 112 has a notch 113. The lower end of the upper fixing kit 14 is inserted into the cylinder 112, and its upper end extends to the outside of the cylinder 112 and abuts against the bottom surface of the notch 113. The lower fixing kit 16 is also inserted into the lower end of the cylinder 112. The lower end of the lower fixing kit 16 has multiple support strips 161 arranged along the outer periphery of the support holes, which facilitates installation and improves the support strength.
[0030] Among them, such as Figure 1 , Figure 5 As shown, the oscillator radiating body 2 includes a PCB substrate 21 and copper-clad feed coupling plates 22, oscillator arm 1 23, and oscillator arm 24 disposed on the PCB substrate 21. The copper-clad feed coupling plates 22, oscillator arm 1 23, and oscillator arm 24 are arranged sequentially from the inside to the outside along the oscillator radiating body 2. The copper-clad feed coupling plates 22 are made of epoxy resin board and have excellent dielectric properties. There are 4 copper-clad feed coupling plates 22, which are arranged around the central hole in the middle of the PCB substrate 21 and are coupled to the oscillator balun 1. The filter stub adjustment component 3 is coupled to the copper-clad feed coupling plates 22, oscillator arm 1 23, and oscillator arm 24. The oscillator adjustment component 4 is coupled to the oscillator arm 24.
[0031] The copper-clad power coupling piece 22, the first oscillator arm 23, and the second oscillator arm 24 are integrated onto the PCB substrate 21 through an etching process, forming an integrated copper-clad structure with a copper thickness of approximately 35mm, which simplifies the assembly process. Furthermore, the copper-clad power coupling piece 22 is a near-right-angle shape, positioned along the four corners of the central square hole (center hole) in the middle of the PCB substrate 21. The first oscillator arm 23 and the second oscillator arm 24 are near-rectangular, with the ends of the first oscillator arm 23 and the second oscillator arm 24 that are close to each other being tapered.
[0032] like Figure 1 , Figure 6-9 As shown, the filter stub adjustment component 3 is a single-sided copper-clad PCB board, including a PCB board 31 and a copper-clad structure disposed on the PCB board 31. The copper-clad structure is coupled to the copper-clad power supply coupling plate 22, the first oscillator arm 23 and the second oscillator arm 24, including a copper-clad component 32 and a copper-clad component 33. There are two copper-clad components 32, which are disposed opposite to each other at the end of the PCB board 31 near the oscillator balun 1. There is an "eight"-shaped expansion at the end of the PCB board 31 away from the oscillator balun 1. There are also two copper-clad components 33, which are disposed opposite to each other on the expansion. By changing the shape of the copper-clad components 32 and 33, the equivalent electrical length of the connection can be changed, thereby adjusting the types of filter stub adjustment components. Different filter stub adjustment components can be combined to form different filter units, corresponding to different filter frequency band requirements, so as to achieve the tuning of filter stubs in different frequency bands. Among them, copper-clad component 32 is coupled to copper-clad power feed coupling plate 22 and oscillator arm 23, and copper-clad component 33 is coupled to oscillator arm 23 and oscillator arm 24.
[0033] Copper-clad component 1 (32) and copper-clad component 2 (33) are folded structures composed of multiple turns. The outer side of each corner of the folded structure is a right angle, a triangle, or an arc. It can be made into a triangle by chamfering and into an arc by rounding the corner.
[0034] The oscillator adjustment component 4 is also a single-sided copper-clad PCB board, including PCB board two and copper-clad component three 41 disposed on PCB board two. The copper-clad component three 41 is adapted to the shape of PCB board two and is coupled to a group of oscillator arms two 24 located at the corner of the oscillator radiating body 2. By changing the shape of copper-clad component three 41, the equivalent electrical length of the connection is changed, thereby adjusting the type of oscillator adjustment component. When it is necessary to adjust the frequency deviation of the oscillator working frequency band, different types of oscillator adjustment components are replaced to realize the frequency band adjustment of the working frequency band.
[0035] The connecting side of the copper-clad component 3 41 is wavy, right-angled, or sawtooth-shaped. The equivalent electrical length is changed by altering the shape of the copper-clad component 3.
[0036] The working principle of this invention is as follows: the oscillator balun 1 transmits external signals to the copper-clad feed coupling plate 22 of the oscillator radiating body 2 through feed core 13 and feed core 24. The copper-clad feed coupling plate 22 couples the signals to the oscillator arm 23 and oscillator arm 24, and the oscillator arms radiate the signals. At the same time, the clutter signals in the external signals are filtered by the filter stub adjustment component 3. According to the actual working frequency band requirements, the corresponding filter stub adjustment component is selected and installed to achieve accurate filtering of clutter in the corresponding frequency band. When it is necessary to adjust the frequency band of the oscillator's working frequency band, the corresponding oscillator adjustment component is selected to change the equivalent electrical length of the oscillator arm, thereby realizing the frequency offset adjustment of the working frequency band and ensuring that the system can work stably in different communication scenarios.
[0037] In one embodiment, such as Figure 8 As shown, adjustment mechanism one includes two types of filter stub adjustment components 3, namely filter stub adjustment component one 3A and filter stub adjustment component two 3B. Adjustment mechanism two includes one type of oscillator adjustment component 4, namely oscillator adjustment component one 4A. Among them, the outer side of each corner of the copper-clad component one 32 and copper-clad component two 33 of filter stub adjustment component one 3A is right-angled, and the outer side of each corner of the copper-clad component one 32 and copper-clad component two 33 of filter stub adjustment component two 3B is triangular; the connecting side of the copper-clad component three 41 of oscillator adjustment component one 4A is wavy.
[0038] The filter stub adjustment component 3A and the filter stub adjustment component 3B can be combined to form three types of filter units: two groups of filter stubs composed of filter stub adjustment component 3A, two groups of filter stubs composed of filter stub adjustment component 3B, and one group of filter stubs composed of filter stub adjustment component 3A and one group of filter stubs composed of filter stub adjustment component 3B. The three types of filter units correspond to different filtering frequency band requirements and realize the tuning of filter stubs in different frequency bands. The three filter units are combined with the oscillator adjustment component 4A to form three oscillator units for different communication frequency bands.
[0039] In one embodiment, such as Figure 9As shown, adjustment mechanism one includes two types of filter stub adjustment components 3, namely filter stub adjustment component one 3A and filter stub adjustment component two 3B. Adjustment mechanism two includes two types of oscillator adjustment components 4, namely oscillator adjustment component one 4A and oscillator adjustment component two 4B. Among them, the outer side of each corner of the copper-clad component one 32 and copper-clad component two 33 of filter stub adjustment component one 3A is right-angled, and the outer side of each corner of the copper-clad component one 32 and copper-clad component two 33 of filter stub adjustment component two 3B is triangular. The connecting side of the copper-clad component three 41 of oscillator adjustment component one 4A is wavy, and the connecting side of the copper-clad component three 41 of oscillator adjustment component two 4B is right-angled.
[0040] Meanwhile, filter stub adjustment component 1 3A and filter stub adjustment component 2 3B can be combined to form 3 types of filter units. These 3 filter units, together with oscillator adjustment component 1 4A and oscillator adjustment component 2 4B, can form 6 types of oscillator units for different communication frequency bands.
[0041] It should be noted that the present invention is not limited to the above embodiments, and can be adapted to various communication frequency band requirements by expanding the types of filter stub adjustment components and oscillator adjustment components.
[0042] The present invention also provides a multi-frequency antenna, including at least one of the above-described adjustable vibrator elements, which are mounted on a reflector by fasteners.
[0043] The multi-frequency antenna of this invention integrates antenna radiation and filtering frequency selection functions, enabling efficient radiation and reception of multi-band signals while autonomously suppressing external interference signals. It fundamentally solves the problems of mutual coupling interference and low integration in traditional solutions, perfectly matching the core requirements of modern communication systems for multi-frequency fusion, high integration, and low interference. It has become a key technology driving the development of communication equipment towards miniaturization and high performance.
[0044] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. An adjustable oscillator unit, characterized in that: The device includes an oscillator balun, an oscillator radiating body, an adjustment mechanism one, and an adjustment mechanism two. The oscillator radiating body is located above and coupled to the oscillator balun. The adjustment mechanism one is used to adjust the filter stub parameters of the corresponding frequency band and includes various different filter stub adjustment components. Identical filter stub adjustment components are grouped in pairs to form filter stub groups. Two groups of identical or different filter stub groups are arranged symmetrically with respect to the center of the oscillator radiating body. The adjustment mechanism two is used to adjust the frequency band of the oscillator's operating frequency band and includes various different oscillator adjustment components. Identical oscillator adjustment components are grouped in pairs and arranged diagonally along the oscillator radiating body. Both the filter stub adjustment components and the oscillator adjustment components are detachably connected to the oscillator radiating body.
2. The adjustable oscillator unit according to claim 1, characterized in that: The oscillator balun includes a balun body, a balun base, a first power supply core, and a second power supply core. The balun base is located below the balun body and is fixedly connected to the balun body. The first power supply core and the second power supply core are fixed inside the balun body.
3. The adjustable oscillator unit according to claim 2, characterized in that: The balun base is fixedly connected to the balun body by a snap-fit connection. The balun base includes a support plate and a guide support sleeve disposed on the support plate. At least part of the lower end of the balun body abuts against the top surface of the support plate, and at least part of the lower end of the balun body is inserted into the guide support sleeve. A set of oppositely arranged sides on the support plate are provided with snap-fits, and the balun body is provided with a slot that cooperates with the snap-fits.
4. The adjustable oscillator unit according to claim 2, characterized in that: The balun body is provided with multiple cylinders. The first power supply core and the second power supply core are respectively inserted into one cylinder. The first power supply core and the second power supply core are fixed inside the cylinder by an upper fixing kit at the upper end of the cylinder and a lower fixing kit at the lower end of the cylinder. The upper ends of the first power supply core and the second power supply core extend out of the cylinder and are fixedly connected to the balun body by welding.
5. The adjustable oscillator unit according to claim 4, characterized in that: Both the upper and lower fixing kits are made of plastic, and each of the upper and lower fixing kits has a through support hole in the middle. The support hole is adapted to the shape of the first and second power supply cells. The upper end of the cylinder has a notch. The lower end of the upper fixing kit is inserted into the cylinder, and its upper end extends to the outside of the cylinder and abuts against the bottom surface of the notch. The lower fixing kit is also inserted into the cylinder, and its lower end has multiple support strips arranged along the outer periphery of the support hole.
6. The adjustable oscillator unit according to claim 1, characterized in that: The oscillator radiating body includes a PCB substrate and a copper-plated power-coupled plate, an oscillator arm one, and an oscillator arm two disposed on the PCB substrate. The copper-plated power-coupled plate, the oscillator arm one, and the oscillator arm two are arranged sequentially from the inside to the outside along the oscillator radiating body. The copper-plated power-coupled plate is arranged around the central hole in the middle of the PCB substrate and is coupled to the oscillator balun. The filter stub adjustment component is coupled to the copper-plated power-coupled plate, the oscillator arm one, and the oscillator arm two. The oscillator adjustment component is coupled to the oscillator arm two.
7. The adjustable oscillator unit according to claim 6, characterized in that: The copper-clad power feeding coupling sheet, vibrator arm one, and vibrator arm two are integrated onto the PCB substrate through an etching process to form an integrated copper-clad structure.
8. The adjustable oscillator unit according to claim 1, characterized in that: The filter stub adjustment component is detachably connected to the PCB substrate of the oscillator radiating body via a riveting component, a snap fastener, or a fastener. The oscillator adjustment component is also detachably connected to the PCB substrate via a riveting component, a snap fastener, or a fastener.
9. The adjustable oscillator unit according to claim 1, characterized in that: The filter stub adjustment component includes a PCB board and a copper-clad structure disposed on the PCB board. The copper-clad structure is coupled to a copper-clad power supply coupling plate, an oscillator arm 1, and an oscillator arm 2, and includes a copper-clad component 1 and a copper-clad component 2. There are two copper-clad components 1, which are disposed opposite each other at the end of the PCB board 1 near the oscillator balun. There is an "eight"-shaped outward expansion at the end of the PCB board 1 away from the oscillator balun. There are also two copper-clad components 2, which are disposed opposite each other on the outward expansion. The type of filter stub adjustment component can be changed by changing the shape of the copper-clad components 1 and 2.
10. The adjustable oscillator unit according to claim 9, characterized in that: The copper-clad component one and copper-clad component two are folded structures composed of multiple turns, and the outer side of each turn of the folded structure is a right angle, a triangle or an arc.
11. The adjustable oscillator unit according to claim 1, characterized in that: The oscillator adjustment component includes a second PCB board and a third copper-clad component disposed on the second PCB board. The third copper-clad component is adapted to the shape of the second PCB board and is coupled to a set of second oscillator arms located at the corner of the oscillator radiation body. The type of the oscillator adjustment component can be changed by changing the shape of the third copper-clad component.
12. The adjustable oscillator unit according to claim 1, characterized in that: The connecting side of the copper-clad component three is wavy, right-angled, or sawtooth-shaped.
13. A multi-frequency antenna, characterized in that: It includes at least one adjustable oscillator unit as described in any one of claims 1-12, the adjustable oscillator unit being mounted on the reflector plate by fasteners.