Low-loss combiner

Abstract

The utility model provides a low-loss combiner. The low-loss combiner comprises a shell, a first filtering assembly and a second filtering assembly. The shell is provided with a first containing cavity and a second containing cavity which are symmetrically distributed on the two sides of the isolation plate along the center line in the length direction of the isolation plate, and the first filtering assembly and the second filtering assembly are arranged in the containing cavities respectively. The first filtering assembly comprises a first filtering sub-assembly, a second filtering sub-assembly and a third filtering sub-assembly, and each filtering sub-assembly comprises at least two dielectric resonance parts. The dielectric resonance part is formed by bonding a first ceramic dielectric sub-part and a second ceramic dielectric sub-part, the first ceramic dielectric sub-part is arranged above the second ceramic dielectric sub-part, the first ceramic dielectric sub-part and the second ceramic dielectric sub-part are respectively provided with a first resonance through hole, a second resonance through hole and a third resonance through hole, and the central axes of the three through holes coincide and are communicated with one another. The low-loss combiner adopts the dielectric resonance piece made of the ceramic material with low dielectric loss, has the characteristic of high quality factor, and can obviously reduce signal transmission loss and effectively suppress non-target frequency signals, thereby improving the signal transmission efficiency.

Description

Technical Field

[0001] This disclosure relates to the technical field of combiners, and in particular to a low-loss combiner. Background Technology

[0002] With the rapid development of wireless communication technology, combiners, as core components for combining and splitting multi-band signals, directly affect the signal coverage quality of the system. Traditional combiner resonators mostly use metal materials such as iron or copper, and frequency band selection is achieved by adjusting the size of the resonant cavity. However, the inherent defects of metal materials in high-frequency applications are becoming increasingly apparent.

[0003] Specifically, traditional combiner resonators mostly use metals such as iron or copper. However, iron is susceptible to environmental corrosion, forming an oxide layer that alters the equivalent electromagnetic parameters of the resonant cavity. As the operating frequency increases, induced eddy currents within the ferromagnetic material cause energy to be converted into heat, significantly reducing the resonator's quality factor and causing additional energy attenuation during signal transmission. While copper does not suffer from permeability issues, its high cost and high-temperature oxidation problems affect the reliability of combiners in large-scale applications. Therefore, resonators made of a single metal are insufficient to meet the requirements of multi-band composite filtering in combiners. Utility Model Content

[0004] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a low-loss combiner that reduces losses and effectively suppresses harmonics and noise.

[0005] The purpose of this disclosure is achieved through the following technical solution:

[0006] A low-loss combiner includes a housing, a first filter component, and a second filter component. The housing has a first receiving cavity and a second receiving cavity. The housing has an isolation plate. The first receiving cavity and the second receiving cavity are symmetrically arranged on two sides of the isolation plate along the center line of the isolation plate's length direction. The first filter component is disposed in the first receiving cavity, and the second filter component is disposed in the second receiving cavity.

[0007] The first filtering component includes a first filtering sub-component, a second filtering sub-component, and a third filtering sub-component. The first filtering sub-component, the second filtering sub-component, and the third filtering sub-component each include at least two dielectric resonators.

[0008] The dielectric resonator includes a first ceramic dielectric sub-component and a second ceramic dielectric sub-component. The first ceramic dielectric sub-component is bonded to the second ceramic dielectric sub-component and is disposed above the second ceramic dielectric sub-component. The first ceramic dielectric sub-component has a first resonant through-hole, and the second ceramic dielectric sub-component has a second resonant through-hole and a third resonant through-hole. The central axes of the first resonant through-hole, the second resonant through-hole, and the third resonant through-hole coincide and are interconnected.

[0009] In one embodiment, the diameter of the first ceramic dielectric sub-component ranges from 88.9 mm to 89.9 mm.

[0010] In one embodiment, the thickness of the first ceramic dielectric sub-component ranges from 30.4 mm to 31.4 mm.

[0011] In one embodiment, the diameter of the second ceramic dielectric sub-component ranges from 69.8 mm to 70.8 mm.

[0012] In one embodiment, the thickness of the second ceramic dielectric sub-component ranges from 23.8 mm to 24.2 mm.

[0013] In one embodiment, the second ceramic dielectric component is a 99% alumina dielectric block.

[0014] In one embodiment, the aperture of the first resonant via is between 25.5 mm and 26.1 mm.

[0015] In one embodiment, the aperture of the second resonant via is between 52.2 mm and 52.8 mm.

[0016] In one embodiment, the aperture of the third resonant via is between 9.25 mm and 9.65 mm.

[0017] In one embodiment, the low-loss combiner further includes a signal input component and a combiner output component, wherein the input terminals of the first filter component and the second filter component are respectively connected to the signal input component, and the output terminals of the first filter component and the second filter component are respectively connected to the combiner output component.

[0018] Compared with the prior art, this disclosure has at least the following advantages:

[0019] Compared to traditional metal resonators, the aforementioned low-loss combiner significantly reduces signal loss during transmission due to the use of low-dielectric-loss ceramic materials for the dielectric resonator, thereby greatly improving signal transmission efficiency. Furthermore, the ceramic dielectric resonator possesses a high quality factor, and its narrow-band resonance characteristics cause reflection losses of non-target frequency signals due to impedance mismatch. This allows the dielectric resonator to effectively suppress non-target frequency signals, thereby effectively suppressing harmonics and noise. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a low-loss combiner according to one embodiment;

[0022] Figure 2 Another structural schematic diagram of a low-loss combiner according to one embodiment;

[0023] Figure 3 for Figure 1 A partial structural schematic diagram of the low-loss combiner is shown.

[0024] Figure 4 for Figure 3 The cross-sectional view of the dielectric resonator shown;

[0025] Figure 5 for Figure 3 Another cross-sectional view of the dielectric resonator shown. Detailed Implementation

[0026] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0030] like Figures 1 to 5 As shown, a low-loss combiner 10 according to an embodiment of the present disclosure includes a housing 100, a first filter component 200 and a second filter component 300. The housing 100 has a first receiving cavity 1001 and a second receiving cavity 1002. The housing 100 has an isolation plate 110. The first receiving cavity 1001 and the second receiving cavity 1002 are symmetrically arranged on two sides of the isolation plate 110 along the center line of the length direction of the isolation plate 110. The first filter component 200 is disposed in the first receiving cavity 1001 and the second filter component 300 is disposed in the second receiving cavity 1002.

[0031] The first filter component 200 includes a first filter sub-component 210, a second filter sub-component 220, and a third filter sub-component 230. The first filter sub-component 210, the second filter sub-component 220, and the third filter sub-component 230 each include at least two dielectric resonators 211.

[0032] The dielectric resonator 211 includes a first ceramic dielectric sub-component 2111 and a second ceramic dielectric sub-component 2112. The first ceramic dielectric sub-component 2111 is bonded to the second ceramic dielectric sub-component 2112 and is disposed above the second ceramic dielectric sub-component 2112. The first ceramic dielectric sub-component 2111 has a first resonant through-hole 2101, and the second ceramic dielectric sub-component 2112 has a second resonant through-hole 2102 and a third resonant through-hole 2103. The central axes of the first resonant through-hole 2101, the second resonant through-hole 2102 and the third resonant through-hole 2103 coincide and are interconnected.

[0033] In this embodiment, when signals of different frequency bands are input to the low-loss combiner 10, the signals enter the first filter component 200 and the second filter component 300, respectively. Taking the first filter sub-component 210 as an example, after the signal enters, since each filter sub-component contains at least two dielectric resonators 211, the dielectric resonators 211 utilize the high dielectric constant and low loss characteristics of the first ceramic dielectric sub-component 2111 and the second ceramic dielectric sub-component 2112 to filter out out-of-band clutter and interference signals because they cannot resonate, while the target frequency band signal resonates at a specific frequency and achieves efficient transmission. Specifically, the first ceramic dielectric sub-component 2111 and the second ceramic dielectric sub-component 2112 in the dielectric resonator 211 form a specific electromagnetic field distribution through their internal first resonant through-hole 2101, second resonant through-hole 2102, and third resonant through-hole 2103. The design of these resonant through-holes enables the dielectric resonator 211 to resonate at a specific frequency, allowing only signals of the target frequency band to pass through. Finally, the signals processed by the first filter component 200 and the second filter component 300 are combined at the output port of the combiner.

[0034] Compared to traditional metal resonators, the aforementioned low-loss combiner 10 significantly reduces signal loss during transmission due to the use of a low-dielectric-loss ceramic material for the dielectric resonator 211, thereby greatly improving signal transmission efficiency. Furthermore, the ceramic dielectric resonator 211 possesses a high quality factor, and its narrow-band resonance characteristics cause reflection losses in non-target frequency signals due to impedance mismatch. This allows the dielectric resonator 211 to effectively suppress non-target frequency signals, thereby effectively suppressing harmonics and noise.

[0035] like Figures 3 to 5 As shown, in one embodiment, the diameter D1 of the first ceramic dielectric sub-component 2111 is between 88.9 mm and 89.9 mm. In this embodiment, when the diameter of the first ceramic dielectric sub-component 2111 is within this specific range of 88.9 mm to 89.9 mm, the overall electromagnetic field distribution of the dielectric resonator 211 is highly optimized. This diameter range allows the dielectric resonator 211 to more effectively excite electromagnetic resonance at the target frequency band. Specifically, within this diameter range, the electromagnetic field distribution inside the dielectric resonator 211 is more uniform and concentrated, enabling more precise matching of the electromagnetic characteristics of the target frequency band. This allows the target frequency band signal to resonate more efficiently when passing through the dielectric resonator 211, thereby achieving efficient signal transmission. Furthermore, compared to the case where the diameter exceeds this range, within this diameter range, the signal transmission loss is further reduced, and the signal transmission efficiency is significantly improved.

[0036] like Figures 3 to 5As shown, in one embodiment, the thickness H1 of the first ceramic dielectric sub-component 2111 is between 30.4 mm and 31.4 mm. In this embodiment, when the thickness of the first ceramic dielectric sub-component 2111 is within this range of 30.4 mm to 31.4 mm, the electromagnetic resonance characteristics of the dielectric resonator 211 are optimized. Within this thickness range, the dielectric resonator structure jointly formed by the first ceramic dielectric sub-component 2111 and the second ceramic dielectric sub-component 2112 can form a more ideal electromagnetic field distribution. Specifically, a suitable thickness makes the electric and magnetic field strength distribution inside the dielectric resonator 211 more uniform and reasonable, reducing energy scattering and loss inside the dielectric. For target frequency band signals, the optimized electromagnetic field distribution can more effectively excite resonance, enabling the signal to be transmitted in the dielectric resonator 211 with lower loss. For example, in high-frequency signal transmission, a suitable thickness can reduce the dielectric loss of the signal in the dielectric, improve the signal transmission efficiency, and thus ensure that the signal maintains high strength and quality after filtering.

[0037] like Figures 3 to 5 As shown, in one embodiment, the diameter D2 of the second ceramic dielectric sub-component 2112 is between 69.8 mm and 70.8 mm. In this embodiment, this diameter range allows for good electromagnetic coupling between the second ceramic dielectric sub-component 2112 and the first ceramic dielectric sub-component 2111. During signal transmission, the specific electromagnetic field distribution formed by the first resonant via 2101, the second resonant via 2102, and the third resonant via 2103 is further optimized. Specifically, within this diameter range, the electromagnetic field distribution inside the dielectric resonator 211 better matches the electromagnetic characteristics of the target frequency band, enabling more precise guidance of the target frequency band signal to excite electromagnetic resonance. When the target frequency band signal passes through the dielectric resonator 211, it can couple energy with higher efficiency, thereby achieving efficient signal transmission. Compared to cases where the diameter exceeds this range, within this diameter range, the signal transmission loss of the second ceramic dielectric sub-component 2112 is more effectively suppressed, and the transmission efficiency is significantly improved.

[0038] like Figures 3 to 5As shown, in one embodiment, the thickness H2 of the second ceramic dielectric sub-component 2112 ranges from 23.8 mm to 24.2 mm. In this embodiment, within this thickness range, the dielectric resonant structure jointly formed by the second ceramic dielectric sub-component 2112 and the first ceramic dielectric sub-component 2111 can form a more precise and stable electromagnetic field distribution. When the target frequency band signal passes through the dielectric resonator 211, the appropriate thickness makes the electromagnetic field distribution around the first resonant through-hole 2101, the second resonant through-hole 2102, and the third resonant through-hole 2103 more uniform and reasonable. The optimized electromagnetic field distribution can more effectively excite resonance, resulting in stronger electromagnetic coupling in the through-hole region, thereby transmitting energy with lower loss.

[0039] like Figures 3 to 5 As shown, in one embodiment, the second ceramic dielectric component 2112 is a 99% alumina dielectric block. In this embodiment, due to the extremely high dielectric constant and extremely low dielectric loss of 99% alumina, this material enhances the resonant characteristics of the dielectric resonator 211, making it easier for the dielectric resonator 211 to generate electromagnetic resonance at a specific frequency, thereby improving the selectivity for signals in the target frequency band. Therefore, when a signal passes through the dielectric resonator 211, it can generate resonance more efficiently, while reducing energy scattering and loss during transmission, further improving the signal transmission efficiency. On the other hand, the ceramic material characteristics of 99% alumina improve the quality factor of the dielectric resonator 211, and its narrowband resonant characteristics cause significant reflection loss of non-target frequency signals due to impedance mismatch, thereby effectively suppressing non-target frequency signals.

[0040] like Figures 3 to 5 As shown, in one embodiment, the aperture range R1 of the first resonant via 2101 is between 25.5 mm and 26.1 mm. In this embodiment, when the aperture of the first resonant via 2101 is within this range of 25.5 mm to 26.1 mm, the electromagnetic field distribution inside the dielectric resonator 211 is precisely controlled and optimized. Within this aperture range, the first resonant via 2101, the second resonant via 2102, and the third resonant via 2103 cooperate to form a highly concentrated and stable electromagnetic field region. When the target frequency signal passes through the dielectric resonator 211, it can more effectively excite electromagnetic resonance within this specific electromagnetic field region, making the energy of the electromagnetic field more concentrated within the frequency range corresponding to the target frequency band, thereby improving the signal resonance excitation efficiency. At the same time, this aperture range also effectively enhances the suppression capability of the dielectric resonator 211 for non-target frequency signals, preventing non-target frequency signals from resonating within the specific electromagnetic field region, thus avoiding reflection loss due to impedance mismatch.

[0041] like Figures 3 to 5As shown, in one embodiment, the aperture range R2 of the second resonant via 2102 is between 52.2 mm and 52.8 mm. In this embodiment, when the aperture of the second resonant via 2102 is within this range of 52.2 mm to 52.8 mm, it works synergistically with the first resonant via 2101 and the third resonant via 2103 to further optimize the electromagnetic field distribution inside the dielectric resonator 211. Within this aperture range, the second resonant via 2102 makes the electromagnetic field distribution within the dielectric resonator 211 more reasonable and efficient. When a target frequency signal passes through, a stronger electromagnetic coupling effect can be formed around the second resonant via 2102, thereby helping the target frequency signal to more accurately excite electromagnetic resonance, and thus improving the signal resonance excitation efficiency. Specifically, compared to apertures outside this range, within this aperture range, the signal transmission path within the dielectric resonator 211 is smoother, energy scattering and reflection phenomena are significantly reduced, allowing the signal to be transmitted with lower loss, significantly improving the signal transmission efficiency.

[0042] like Figures 3 to 5 As shown, in one embodiment, the aperture range R3 of the third resonant via 2103 is between 9.25 mm and 9.65 mm. In this embodiment, this aperture range allows the third resonant via 2103 to work synergistically with the first resonant via 2101 and the second resonant via 2102 to form a highly uniform and stable electromagnetic field region within the dielectric resonator 211. The uniform electromagnetic field distribution ensures that the target frequency signal, when passing through the dielectric resonator 211, achieves sufficient electromagnetic coupling throughout the entire structure of the dielectric resonator 211, thereby more effectively exciting electromagnetic resonance. The energy of the target frequency signal can be more concentrated within a specific frequency range, reducing energy scattering and loss within the dielectric, and significantly improving the signal resonance excitation efficiency. Furthermore, this aperture range of the third resonant via 2103 further enhances the dielectric resonator 211's ability to suppress non-target frequency signals. Specifically, since non-target frequency band signals cannot be excited to resonate in a specific electromagnetic field region, they are difficult to propagate in the dielectric resonator 211, thereby effectively suppressing the interference of non-target frequency band signals. Consequently, non-target frequency band signals suffer significant reflection loss due to impedance mismatch, ensuring high-quality transmission of target frequency band signals.

[0043] like Figures 1 to 5As shown, in one embodiment, the low-loss combiner 10 further includes a signal input component 400 and a combining output component 500. The input terminals of the first filter component 200 and the second filter component 300 are respectively connected to the signal input component 400, and the output terminals of the first filter component 200 and the second filter component 300 are respectively connected to the combining output component 500. In this embodiment, the signal input component 400 serves as the interface for the low-loss combiner 10 to receive external signals, enabling it to efficiently and stably introduce signals of different frequency bands into the multiple filter components of the combiner. The coupling structure of the combining output component 500 is connected to the last resonator of the multiple filter components, allowing the combining output component 500 to combine the signals processed by the multiple filter components and output them to subsequent devices. Simultaneously, due to the good isolation performance of the combining output component 500, it ensures that signals of different frequency bands do not interfere with each other, thereby achieving efficient signal combining, effectively suppressing crosstalk between signals of different frequency bands, and thus ensuring the quality of the output signal.

[0044] Compared with the prior art, this disclosure has at least the following advantages:

[0045] Compared to traditional metal resonators, the aforementioned low-loss combiner 10 significantly reduces signal loss during transmission due to the use of a low-dielectric-loss ceramic material for the dielectric resonator 211, thereby greatly improving signal transmission efficiency. Furthermore, the ceramic dielectric resonator 211 possesses a high quality factor, and its narrow-band resonance characteristics cause reflection losses in non-target frequency signals due to impedance mismatch. This allows the dielectric resonator 211 to effectively suppress non-target frequency signals, thereby effectively suppressing harmonics and noise.

[0046] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A low-loss combiner, comprising a housing, a first filter assembly, and a second filter assembly, wherein the housing has a first receiving cavity and a second receiving cavity, the housing has an isolation plate, the first receiving cavity and the second receiving cavity are symmetrically arranged on two sides of the isolation plate along the centerline of the isolation plate's length direction, the first filter assembly is disposed in the first receiving cavity, and the second filter assembly is disposed in the second receiving cavity, characterized in that, The first filtering component includes a first filtering sub-component, a second filtering sub-component, and a third filtering sub-component. The first filtering sub-component, the second filtering sub-component, and the third filtering sub-component each include at least two dielectric resonators. The dielectric resonator includes a first ceramic dielectric sub-component and a second ceramic dielectric sub-component. The first ceramic dielectric sub-component is bonded to the second ceramic dielectric sub-component and is disposed above the second ceramic dielectric sub-component. The first ceramic dielectric sub-component has a first resonant through-hole, and the second ceramic dielectric sub-component has a second resonant through-hole and a third resonant through-hole. The central axes of the first resonant through-hole, the second resonant through-hole, and the third resonant through-hole coincide and are interconnected.

2. The low-loss combiner according to claim 1, characterized in that, The diameter of the first ceramic dielectric sub-component ranges from 88.9 mm to 89.9 mm.

3. The low-loss combiner according to claim 2, characterized in that, The thickness of the first ceramic dielectric component ranges from 30.4 mm to 31.4 mm.

4. The low-loss combiner according to claim 1, characterized in that, The diameter of the second ceramic dielectric sub-component ranges from 69.8 mm to 70.8 mm.

5. The low-loss combiner according to claim 4, characterized in that, The thickness of the second ceramic dielectric component ranges from 23.8 mm to 24.2 mm.

6. The low-loss combiner according to claim 1, characterized in that, The second ceramic dielectric component is a 99% alumina dielectric block.

7. The low-loss combiner according to claim 1, characterized in that, The diameter of the first resonant through hole ranges from 25.5 mm to 26.1 mm.

8. The low-loss combiner according to claim 1, characterized in that, The diameter of the second resonant through hole ranges from 52.2 mm to 52.8 mm.

9. The low-loss combiner according to claim 1, characterized in that, The diameter of the third resonant through-hole ranges from 9.25 mm to 9.65 mm.

10. The low-loss combiner according to claim 1, characterized in that, The low-loss combiner further includes a signal input component and a combiner output component. The input terminals of the first filter component and the second filter component are respectively connected to the signal input component, and the output terminals of the first filter component and the second filter component are respectively connected to the combiner output component.

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