A direct coupled pseudo-elliptic dielectric resonator filter based on connecting bars

Abstract

The application discloses a straight connection type pseudo-elliptical dielectric resonator filter based on connecting bars, which comprises a shielded cavity, an integrated multi-stage dielectric resonator and a dielectric support column. Any pair of adjacent sub-cavities in the shielded cavity is communicated by an inductive coupling window. Any pair of adjacent single-mode dielectric resonators in the integrated multi-stage dielectric resonator is connected by a connecting bar. The single-mode dielectric resonator and the connecting bar correspond to the sub-cavity and the inductive coupling window respectively. The dielectric support column supports the integrated multi-stage dielectric resonator in the shielded cavity. The single-mode dielectric resonator is located in a corresponding sub-cavity. The connecting bar passes through a corresponding inductive coupling window. The application provides electric coupling through the connecting bar and magnetic coupling through the inductive coupling window to form mixed electromagnetic coupling, can generate more frequency-controllable transmission zero points, has good high-pass band selectivity, and has the advantages of easy manufacturing, assembly, cost reduction and the like by arranging the connecting bars. The application is widely applied in the field of wireless communication technology.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and in particular to a direct-connected pseudo-elliptic dielectric resonator filter based on connecting ribs. Background Technology

[0002] High-reliability, low-latency communication is a key requirement in fifth-generation, sixth-generation, and more advanced wireless communication systems. Bandpass filters, as essential components in the RF front-end of communication systems, are evolving towards lower loss, higher selectivity, and smaller size in advanced communication systems. Dielectric resonators, with their good temperature stability, small size, and high quality factor, are a candidate for bandpass filters. However, current dielectric resonators suffer from drawbacks such as high system overhead, low overall quality factor, strong spurious harmonic interference, and low out-of-band rejection. Summary of the Invention

[0003] The dielectric resonators used in current wireless communication technologies suffer from problems such as high system overhead, low overall quality factor, strong spurious harmonic interference, and low out-of-band suppression. The purpose of this invention is to provide a direct-connected pseudo-elliptic dielectric resonator filter based on connecting ribs.

[0004] This invention includes a direct-connected pseudo-elliptic dielectric resonator filter based on connecting ribs, the direct-connected pseudo-elliptic dielectric resonator filter based on connecting ribs comprising:

[0005] A shielded cavity; the shielded cavity includes multiple sub-cavities and several inductive coupling windows, and any pair of adjacent sub-cavities are connected by a corresponding inductive coupling window;

[0006] An integrated multi-stage dielectric resonator; the integrated multi-stage dielectric resonator includes multiple single-mode dielectric resonators and several connecting ribs, and any pair of adjacent single-mode dielectric resonators are connected by a corresponding connecting rib; wherein, each single-mode dielectric resonator corresponds one-to-one with each sub-cavity, and each connecting rib corresponds one-to-one with each inductive coupling window.

[0007] Dielectric support column; the dielectric support column is used to support the integrated multi-stage dielectric resonator within the shielded cavity; wherein any of the single-mode dielectric resonators is located within a corresponding sub-cavity, and any of the connecting ribs passes through a corresponding inductive coupling window.

[0008] Furthermore, the direct-connected pseudo-elliptic dielectric resonator filter based on connecting ribs also includes:

[0009] First feed probe; one end of the first feed probe is located outside the shielding cavity, and the other end passes through the shielding cavity and extends into the sub-cavity located at the beginning;

[0010] The second power supply probe; one end of the second power supply probe is located outside the shielding cavity, and the other end passes through the shielding cavity and extends into the sub-cavity located at the far end.

[0011] Furthermore, each of the single-mode dielectric resonators is provided with a through hole.

[0012] Furthermore, the through hole is a rounded rectangle.

[0013] Furthermore, the length direction of the through hole is the same as the diagonal direction of the single-mode dielectric resonator;

[0014] The combination of the various through holes is axially symmetrical.

[0015] Furthermore, in the integrated multi-stage dielectric resonator, the single-mode dielectric resonator at the very beginning is provided with a first groove, and the single-mode dielectric resonator at the very end is provided with a second groove.

[0016] The other end of the first feed probe extends into the through-hole of the single-mode dielectric resonator located at the very beginning through the first groove; the first feed probe is suspended in the first groove;

[0017] The other end of the second feed probe extends through the second groove into the through hole of the single-mode dielectric resonator located at the far end; the second feed probe is suspended in the second groove.

[0018] Furthermore, the medium support column includes:

[0019] A first support post; the first support post is installed in the sub-cavity at the very beginning, and the first support post is used to support the single-mode dielectric resonator at the very beginning;

[0020] The second support column is installed in the outermost sub-cavity and is used to support the outermost single-mode dielectric resonator.

[0021] Furthermore, the direct-connected pseudo-elliptic dielectric resonator filter based on connecting ribs also includes:

[0022] Cover plate; the cover plate is connected to the shielding cavity, and the cover plate covers each sub-cavity and each inductive coupling window.

[0023] Furthermore, the single-mode dielectric resonator and the connecting rib are made of a high dielectric constant material.

[0024] Furthermore, the dielectric support pillar is made of a low dielectric constant material.

[0025] The beneficial effects of the present invention are as follows: The direct-connected pseudo-elliptic dielectric resonator filter based on connecting ribs in the embodiments forms a hybrid electromagnetic coupling by providing electrical coupling through connecting ribs and magnetic coupling through inductive coupling windows. This can generate more frequency-controllable transmission zeros, has good high-passband selectivity, and by setting connecting ribs, it has the advantages of easy manufacturing, assembly, and cost reduction. Attached Figure Description

[0026] Figure 1 This is an exploded view of the structure of the direct-connected pseudo-elliptic dielectric resonator filter based on connecting ribs in the embodiment.

[0027] Figure 2 This is a schematic diagram of the assembly structure of the direct-connected pseudo-elliptic dielectric resonator filter based on connecting ribs in the embodiment.

[0028] Figure 3 The following is a simulation test of a direct-connected pseudo-elliptic dielectric resonator filter in the embodiment, showing the measured return loss and insertion loss as a function of frequency.

[0029] Reference numerals: 101—Integrated multi-stage dielectric resonator, 10101—First single-mode dielectric resonator, 10102—Second single-mode dielectric resonator, 10103—Third single-mode dielectric resonator, 10104—Fourth single-mode dielectric resonator, 10105—Fifth single-mode dielectric resonator, 10106—Sixth single-mode dielectric resonator, 10111—First dielectric connecting rib, 10112—Second dielectric connecting rib, 10113—Third dielectric connecting rib, 10114—Fourth dielectric connecting rib, 10115—Fifth dielectric connecting rib, 10121—First rounded rectangular through-hole, 10122—Second rounded rectangular through-hole, 10123—Third rounded rectangular through-hole, 10124—Fourth rounded rectangular through-hole, 10125— Fifth rounded rectangular through hole, 10126—Sixth rounded rectangular through hole, 10131—First groove, 10132—Second groove, 1021—First support post, 1022—Second support post, 103—Shielding cavity, 10301—First sub-cavity, 10302—Second sub-cavity, 10303—Third sub-cavity, 10304—Fourth sub-cavity, 10305—Fifth sub-cavity, 10306—Sixth sub-cavity, 10311—First inductive coupling window, 10312—Second inductive coupling window, 10313—Third inductive coupling window, 10314—Fourth inductive coupling window, 10315—Fifth inductive coupling window, 1041—First feed probe, 1042—Second feed probe, 105—Cover plate. Detailed Implementation

[0030] To improve selectivity, current dielectric resonator filter designs typically introduce cross-coupling into the topology to construct pseudo-elliptic filters with transmission zeros. While simple and effective, this approach has several limitations. First, cross-coupling requires introducing coupling between non-adjacent resonant elements, often necessitating a folded arrangement of multiple elements, significantly restricting filter layout. Second, without considering multiple source and load couplings, cross-coupling can only provide a maximum of N / 2 transmission zeros, where N is the filter order. Third, to flexibly control the frequency and number of zeros, some topologies require cross-coupling with negative coupling coefficients, typically necessitating additional capacitive probes and support pillars between the two resonant cavities. When multiple negative coupling coefficients are required, multiple capacitive probes and support pillars are needed, significantly increasing system overhead. Furthermore, the introduction of capacitive probes can also have a negative impact on the performance of the filter: on the one hand, a large amount of electric field energy in the cavity will be concentrated near the probe, which will significantly increase the ohmic loss and thus deteriorate the overall quality factor of the filter; on the other hand, the self-resonant frequency of the probe is often very close to the passband of the filter, which will generate additional spurious harmonic interference and reduce the out-of-band rejection level.

[0031] Based on the above principles, this embodiment provides a direct-connection pseudo-elliptic dielectric resonator filter based on connecting ribs. The direct-connection pseudo-elliptic dielectric resonator filter based on connecting ribs includes components such as a shielding cavity 103, an integrated multi-stage dielectric resonator 101, and dielectric support pillars.

[0032] In the direct-connected pseudo-elliptical dielectric resonator filter based on connecting ribs, the shielding cavity 103 includes multiple sub-cavities and several inductive coupling windows. These sub-cavities can be arranged along a straight line, and any two adjacent sub-cavities are connected through an inductive coupling window.

[0033] In the direct-connected pseudo-elliptic dielectric resonator filter based on connecting ribs, the integrated multi-stage dielectric resonator 101 includes multiple single-mode dielectric resonators and several connecting ribs. There is a one-to-one correspondence between each single-mode dielectric resonator and each sub-cavity in the shielded cavity 103, and a one-to-one correspondence between each connecting rib and each inductive coupling window in the shielded cavity 103. That is, each single-mode dielectric resonator has a corresponding sub-cavity, and each connecting rib has a corresponding inductive coupling window. These single-mode dielectric resonators can also be arranged in a straight line, with any two adjacent single-mode dielectric resonators connected by a connecting rib.

[0034] Furthermore, the internal positions of each single-mode dielectric resonator in the integrated multi-stage dielectric resonator 101 correspond to the internal positions of each sub-cavity in the shielded cavity 103, and the internal positions of each connecting rib in the integrated multi-stage dielectric resonator 101 correspond to the internal positions of each inductive coupling window in the shielded cavity 103. This allows each single-mode dielectric resonator and each connecting rib in the integrated multi-stage dielectric resonator 101 to be aligned with each sub-cavity and each inductive coupling window in the shielded cavity 103, respectively.

[0035] Each sub-cavity in the shielding cavity 103 provides placement space for each single-mode dielectric resonator in the integrated multi-stage dielectric resonator 101; each inductive coupling window in the shielding cavity 103 provides placement space for each connecting rib in the integrated multi-stage dielectric resonator 101. Thus, dielectric support pillars can be installed in the shielding cavity 103 first, and the integrated multi-stage dielectric resonator 101 can be placed inside the shielding cavity 103, supported by the dielectric support pillars, thus fixing the integrated multi-stage dielectric resonator 101 inside the shielding cavity 103. After installation, each single-mode dielectric resonator in the integrated multi-stage dielectric resonator 101 is installed in a corresponding sub-cavity, and the connecting rib between two adjacent single-mode dielectric resonators passes through the inductive coupling window between a pair of adjacent sub-cavities corresponding to these two adjacent single-mode dielectric resonators.

[0036] In this embodiment, the shielded cavity 103 includes six sub-cavities (arranged in the order of first sub-cavity 10301, second sub-cavity 10302, third sub-cavity 10303, fourth sub-cavity 10304, fifth sub-cavity 10305, and sixth sub-cavity 10306) and five inductive coupling windows (arranged in the order of first inductive coupling window 10311, second inductive coupling window 10312, third inductive coupling window 10313, fourth inductive coupling window 10314, and fifth inductive coupling window 10315), and the integrated multi-stage dielectric resonator 101 includes six single-mode dielectric resonators (arranged in the order of first inductive coupling window 10301, second inductive coupling window 10312, third inductive coupling window 10313, fourth inductive coupling window 10314, and fifth inductive coupling window 10315). Taking a single-mode dielectric resonator 10101, a second single-mode dielectric resonator 10102, a third single-mode dielectric resonator 10103, a fourth single-mode dielectric resonator 10104, a fifth single-mode dielectric resonator 10105, and a sixth single-mode dielectric resonator 10106 as an example, and five connecting ribs (arranged in the order of first dielectric connecting rib 10111, second dielectric connecting rib 10112, third dielectric connecting rib 10113, fourth dielectric connecting rib 10114, and fifth dielectric connecting rib 10115), and two dielectric support pillars (first support pillar 1021 and second support pillar 1022), as an example, this direct-connected pseudo-elliptic dielectric resonator filter structure is as follows: Figure 1 As shown.

[0037] Reference Figure 1 In the shielding cavity 103, the first sub-cavity 10301 and the second sub-cavity 10302 are connected by a first inductive coupling window 10311, the second sub-cavity 10302 and the third sub-cavity 10303 are connected by a second inductive coupling window 10312, the third sub-cavity 10303 and the fourth sub-cavity 10304 are connected by a third inductive coupling window 10313, the fourth sub-cavity 10304 and the fifth sub-cavity 10305 are connected by a fourth inductive coupling window 10314, and the fifth sub-cavity 10305 and the sixth sub-cavity 10306 are connected by a fifth inductive coupling window 10315.

[0038] Reference Figure 1 In the integrated multi-stage dielectric resonator 101, the first single-mode dielectric resonator 10101 and the second single-mode dielectric resonator 10102 are connected by the first dielectric connecting rib 10111, the second single-mode dielectric resonator 10102 and the third single-mode dielectric resonator 10103 are connected by the second dielectric connecting rib 10112, the third single-mode dielectric resonator 10103 and the fourth single-mode dielectric resonator 10104 are connected by the third dielectric connecting rib 10113, the fourth single-mode dielectric resonator 10104 and the fifth single-mode dielectric resonator 10105 are connected by the fourth dielectric connecting rib 10114, and the fifth single-mode dielectric resonator 10105 and the sixth single-mode dielectric resonator 10106 are connected by the fifth dielectric connecting rib 10115.

[0039] Reference Figure 1 The first single-mode dielectric resonator 10101, the second single-mode dielectric resonator 10102, the third single-mode dielectric resonator 10103, the fourth single-mode dielectric resonator 10104, the fifth single-mode dielectric resonator 10105, and the sixth single-mode dielectric resonator 10106 are located in the first sub-cavity 10301, the second sub-cavity 10302, the third sub-cavity 10303, the fourth sub-cavity 10304, the fifth sub-cavity 10305, and the sixth sub-cavity 10306, respectively. The first dielectric connecting rib 10111, the second dielectric connecting rib 10112, the third dielectric connecting rib 10113, the fourth dielectric connecting rib 10114, and the fifth dielectric connecting rib 10115 pass through the first inductive coupling window 10311, the second inductive coupling window 10312, the third inductive coupling window 10313, the fourth inductive coupling window 10314, and the fifth inductive coupling window 10315, respectively.

[0040] Reference Figure 1In the dielectric support column, the first support column 1021 is installed in the initial sub-cavity (first sub-cavity 10301) and connected to the initial single-mode dielectric resonator (first single-mode dielectric resonator 10101). The second support column 1022 is installed in the final sub-cavity (sixth sub-cavity 10306) and connected to the final single-mode dielectric resonator (sixth single-mode dielectric resonator 10106). Specifically, the first support column 1021 and the second support column 1022 are respectively provided with mounting positions. The first single-mode dielectric resonator 10101 and the sixth single-mode dielectric resonator 10106 can be embedded into the mounting positions of the first support column 1021 and the second support column 1022, thereby fixing the integrated multi-stage dielectric resonator 101 and the dielectric support column.

[0041] In this embodiment, the working principle of the direct-connected pseudo-elliptic dielectric resonator filter based on connecting ribs is as follows: each single-mode dielectric resonator in the integrated multi-stage dielectric resonator 101 can be used as a filter. The order of the direct-connected pseudo-elliptic dielectric resonator filter based on connecting ribs is the number of single-mode dielectric resonators in the integrated multi-stage dielectric resonator 101. The sub-cavities in the shielding cavity 103 can provide shielding for the single-mode dielectric resonators. Each connecting rib can provide electrical coupling between the two single-mode dielectric resonators connected to it. Each inductive coupling window can provide magnetic coupling between the two single-mode dielectric resonators on both sides of it. Thus, each connecting rib and its corresponding coupling window can form a hybrid electromagnetic coupling, that is, there is hybrid electromagnetic coupling between two adjacent filters. Each hybrid electromagnetic coupling can generate a transmission zero at its resonance point. Furthermore, the frequency of each transmission zero can be controlled by the resonant frequency of its corresponding hybrid electromagnetic coupling. Therefore, it is easy to achieve free control of the frequency of each transmission zero by controlling the physical parameters of the corresponding connecting rib and inductive coupling window.

[0042] In this embodiment, the maximum number of transmission zeros generated by the direct-connected pseudo-elliptic dielectric resonator filter based on connecting ribs is equal to the number of hybrid electromagnetic couplings. For example, with N single-mode dielectric resonators (i.e., filter order N, with N sub-cavities, N-1 connecting ribs, and N-1 inductive coupling windows), the direct-connected pseudo-elliptic dielectric resonator filter based on connecting ribs generates N-1 hybrid electromagnetic couplings. Thus, the maximum number of transmission zeros generated by the direct-connected pseudo-elliptic dielectric resonator filter based on connecting ribs is N. Therefore, with N single-mode dielectric resonators and N-1 hybrid electromagnetic coupling structures, N-1 frequency-controllable transmission zeros can be generated, thereby achieving high-passband selectivity.

[0043] In this embodiment, the connecting ribs can link multiple originally independent dielectric resonators into one unit, allowing multiple single-mode dielectric resonators to be manufactured, positioned, and assembled simultaneously. This simplifies production and assembly steps and reduces costs. Furthermore, the integration of the dielectric resonators can significantly reduce the number of support columns required, for example... Figure 1 The sixth-order dielectric resonator filter shown only requires two support pillars (i.e., the first support pillar 1021 and the second support pillar 1022) to support and fix each component.

[0044] In this embodiment, electrical coupling is provided through connecting ribs, which avoids the need for additional capacitive probes, offering a cost advantage. In actual manufacturing, the same high-dielectric-constant material (e.g., ceramic) can be used to fabricate both the single-mode dielectric resonator and the connecting ribs. This results in low dielectric loss in the connecting ribs themselves, with no metal loss, minimizing their impact on the filter's quality factor and thus providing lower insertion loss. Furthermore, by adjusting the width of each connecting rib, the stray harmonic frequencies introduced by the connecting ribs can be shifted to higher frequencies while maintaining constant electrical coupling strength, thereby extending the stopband. This approach offers performance advantages compared to using capacitive probes for electrical coupling.

[0045] In this embodiment, the ceramic material used to manufacture the integrated multi-stage dielectric resonator 101 (single-mode dielectric resonator and connecting ribs) has a dielectric constant of 38.5 and a dielectric loss of 0.0001 at 5 GHz. Correspondingly, a material with a relatively low dielectric constant can be used to manufacture the dielectric support pillars (first support pillar 1021 and second support pillar 1022), with a dielectric constant of 6.7 and a dielectric loss of 0.0008 at 5 GHz. The material used to manufacture the shielding cavities 103 (each sub-cavity) can be a metal such as aluminum alloy.

[0046] In this embodiment, refer to Figure 1 The direct-connection pseudo-elliptic dielectric resonator filter based on connecting ribs also includes a first feed probe 1041 and a second feed probe 1042. The first feed probe 1041 passes through the outer wall of the shielding cavity 103, with one end located outside the shielding cavity 103 and the other end extending into the first sub-cavity (first sub-cavity 10301) located at the beginning. The second feed probe 1042 passes through the outer wall of the shielding cavity 103, with one end located outside the shielding cavity 103 and the other end extending into the sixth sub-cavity (sixth sub-cavity 10306) located at the end.

[0047] Reference Figure 1Each single-mode dielectric resonator is provided with a through-hole, which can be rounded rectangular in shape. Specifically, the first single-mode dielectric resonator 10101 is provided with a first rounded rectangular through-hole 10121, the second single-mode dielectric resonator 10102 is provided with a second rounded rectangular through-hole 10122, the third single-mode dielectric resonator 10103 is provided with a third rounded rectangular through-hole 10123, the fourth single-mode dielectric resonator 10104 is provided with a fourth rounded rectangular through-hole 10124, the fifth single-mode dielectric resonator 10105 is provided with a fifth rounded rectangular through-hole 10125, and the sixth single-mode dielectric resonator 10106 is provided with a sixth rounded rectangular through-hole 10126.

[0048] Specifically, refer to Figure 1 The length direction of the via in each single-mode dielectric resonator is the same as the direction of one of the diagonals of the single-mode dielectric resonator, and the shape formed by all the vias, namely the first rounded rectangular via 10121, the second rounded rectangular via 10122, the third rounded rectangular via 10123, the fourth rounded rectangular via 10124, the fifth rounded rectangular via 10125 and the sixth rounded rectangular via 10126, is an axisymmetric figure.

[0049] In this embodiment, the effect of assembling the shielding cavity 103, the integrated multi-stage dielectric resonator 101, and the dielectric support pillar together is as follows: Figure 2 As shown. (Refer to...) Figure 2 The first single-mode dielectric resonator (10101) at the very beginning is provided with a first groove 10131, and the sixth single-mode dielectric resonator (10106) at the very end is provided with a second groove 10132. The first groove 10131 provides space for the first feed probe 1041, allowing the first feed probe 1041 to pass through the outer wall of the shielding cavity 103 and extend along the first groove 10131 into the first rounded rectangular through hole 10121 of the first single-mode dielectric resonator (10101) at the very beginning; the second groove 10132 provides space for the second feed probe 1042, allowing the second feed probe 1042 to pass through the outer wall of the shielding cavity 103 and extend along the second groove 10132 into the sixth rounded rectangular through hole 10126 of the sixth single-mode dielectric resonator (10106) at the very end.

[0050] In this embodiment, the first feed probe 1041 is suspended in the first groove 10131, and the second feed probe 1042 is suspended in the second groove 10132. That is, the first feed probe 1041 does not contact the first single-mode dielectric resonator 10101, and the second feed probe 1042 does not contact the sixth single-mode dielectric resonator 10106.

[0051] In this embodiment, the outer end of the first feed probe 1041 is connected to an external input coaxial interface, and the outer end of the second feed probe 1042 is connected to an external output coaxial interface. External signals are input to the direct-connected pseudo-elliptic dielectric resonator filter based on the connecting ribs via the first feed probe 1041, and the filtered signal is output from the second feed probe 1042.

[0052] In this embodiment, by providing a first rounded rectangular through hole 10121, a second rounded rectangular through hole 10122, a third rounded rectangular through hole 10123, a fourth rounded rectangular through hole 10124, a fifth rounded rectangular through hole 10125, and a sixth rounded rectangular through hole 10126, the stray harmonic frequency brought by the connecting rib can be shifted to a higher frequency while maintaining the electrical coupling strength unchanged. Similar to the principle of adjusting the width of the connecting rib, by adjusting the length of these through holes, the high frequency band to which the stray harmonic frequency is shifted can be adjusted.

[0053] In this embodiment, refer to Figure 1 The direct-connected pseudo-elliptical dielectric resonator filter based on connecting ribs also includes a cover plate 105. The cover plate 105 can be made of the same metal material as the shielding cavity 103. By connecting the cover plate 105 to the shielding cavity 103, the cover plate 105 covers each sub-cavity and each inductive coupling window, thereby providing better shielding for the integrated multi-stage dielectric resonator 101 within the shielding cavity 103.

[0054] Figure 3 To simulate and test the direct-connected pseudo-elliptic dielectric resonator filter in this embodiment, the measured return loss and insertion loss versus frequency are plotted. The measured center operating frequency is 3.7 GHz. Figure 3 As can be seen, the measured 3dB passband relative bandwidth is 3.52%, the measured minimum insertion loss in the passband is 0.28dB, the measured return loss in the passband is greater than 11dB, and the measured quality factor is 3000. The direct-connected pseudo-elliptic dielectric resonator filter in this embodiment has good performance.

[0055] In summary, the direct-connected pseudo-elliptic dielectric resonator filter in this embodiment has the following advantages: fewer accessories are required, the dielectric is integrated into the design, and the production cost is low; with N single-mode dielectric resonators, the hybrid electromagnetic coupling structure can provide up to N-1 transmission zeros, resulting in high passband selectivity; the connecting ribs do not introduce additional metal losses, resulting in a high filter quality factor; and the reasonable design of the connecting ribs and rounded rectangular vias can broaden the high-frequency stopband and improve out-of-band rejection capability.

[0056] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," and "right" used in this disclosure are only relative to the relative positional relationships of the components of this disclosure in the accompanying drawings. The singular forms "a," "an," and "the" used in this disclosure are also intended to include the plural forms, unless the context clearly indicates otherwise. Moreover, unless otherwise defined, all technical and scientific terms used in this embodiment have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this embodiment specification is only for describing particular embodiments and is not intended to limit the invention. The term "and / or" as used in this embodiment includes any combination of one or more of the associated listed items.

[0057] It should be understood that although the terms first, second, third, etc., may be used to describe various elements in this disclosure, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from each other. For example, a first element may also be referred to as a second element without departing from the scope of this disclosure, and similarly, a second element may also be referred to as a first element. The use of any and all instances or exemplary language (“e.g.,” “such as,” etc.) provided in this embodiment is intended only to better illustrate embodiments of the invention and, unless otherwise required, does not impose a limitation on the scope of the invention.

[0058] It should be recognized that embodiments of the present invention can be implemented or carried out by computer hardware, a combination of hardware and software, or by computer instructions stored in a non-transitory computer-readable storage medium. The method can be implemented using standard programming techniques—including a non-transitory computer-readable storage medium configured with a computer program, wherein such a storage medium causes the computer to operate in a specific and predefined manner—according to the methods and drawings described in the specific embodiments. Each program can be implemented in a high-level procedural or object-oriented programming language to communicate with the computer system. However, if desired, the program can be implemented in assembly or machine language. In any case, the language can be a compiled or interpreted language. Furthermore, for this purpose, the program can run on a programmed application-specific integrated circuit (ASIC).

[0059] Furthermore, the procedures described in this embodiment can be performed in any suitable order unless otherwise indicated by this embodiment or clearly contradicted by the context. The procedures (or variations and / or combinations thereof) described in this embodiment can be executed under the control of one or more computer systems configured with executable instructions, and can be implemented by hardware or a combination thereof as code (e.g., executable instructions, one or more computer programs, or one or more applications) that commonly executes on one or more processors. A computer program includes multiple instructions executable by one or more processors.

[0060] Furthermore, the method can be implemented in any suitable type of computing platform, including but not limited to personal computers, minicomputers, mainframes, workstations, networked or distributed computing environments, standalone or integrated computer platforms, or in communication with charged particle tools or other imaging devices, etc. Aspects of the invention can be implemented as machine-readable code stored on a non-transitory storage medium or device, whether removable or integrated into a computing platform, such as a hard disk, optical read and / or write storage medium, RAM, ROM, etc., such that it is readable by a programmable computer, and when the storage medium or device is read by the computer, it can be used to configure and operate the computer to perform the processes described herein. Furthermore, the machine-readable code, or portions thereof, can be transmitted via wired or wireless networks. The invention of this embodiment includes these and other different types of non-transitory computer-readable storage media when such media comprises instructions or programs that implement the steps above in conjunction with a microprocessor or other data processor. When programmed according to the methods and techniques of the invention, the invention also includes the computer itself.

[0061] A computer program can be applied to input data to perform the functions of this embodiment, thereby transforming the input data to generate output data stored in non-volatile memory. The output information can also be applied to one or more output devices, such as a display. In a preferred embodiment of the invention, the transformed data represents physical and tangible objects, including specific visual depictions of physical and tangible objects generated on the display.

[0062] The above are merely preferred embodiments of the present invention. The present invention is not limited to the above-described embodiments. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention, as long as they achieve the technical effects of the present invention by the same means, should be included within the scope of protection of the present invention. Within the scope of protection of the present invention, the technical solutions and / or implementation methods can have various modifications and variations.

Claims

1. A direct-connected pseudo-elliptic dielectric resonator filter based on connecting ribs, characterized in that, The direct-connection pseudo-elliptic dielectric resonator filter based on connecting ribs includes: A shielded cavity; the shielded cavity includes multiple sub-cavities and several inductive coupling windows, and any pair of adjacent sub-cavities are connected by a corresponding inductive coupling window; An integrated multi-stage dielectric resonator; the integrated multi-stage dielectric resonator includes multiple single-mode dielectric resonators and several connecting ribs, and any pair of adjacent single-mode dielectric resonators are connected by a corresponding connecting rib; wherein, each single-mode dielectric resonator corresponds one-to-one with each sub-cavity, and each connecting rib corresponds one-to-one with each inductive coupling window. Dielectric support column; the dielectric support column is used to support the integrated multi-stage dielectric resonator within the shielded cavity; wherein any of the single-mode dielectric resonators is located within a corresponding sub-cavity, and any of the connecting ribs passes through a corresponding inductive coupling window.

2. The direct-connection pseudo-elliptic dielectric resonator filter based on connecting ribs according to claim 1, characterized in that, The direct-connection pseudo-elliptic dielectric resonator filter based on connecting ribs also includes: First feed probe; one end of the first feed probe is located outside the shielding cavity, and the other end passes through the shielding cavity and extends into the sub-cavity located at the beginning; The second power supply probe; one end of the second power supply probe is located outside the shielding cavity, and the other end passes through the shielding cavity and extends into the sub-cavity located at the far end.

3. The direct-connected pseudo-elliptic dielectric resonator filter based on connecting ribs according to claim 2, characterized in that: Each of the single-mode dielectric resonators is provided with a through hole.

4. The direct-connected pseudo-elliptic dielectric resonator filter based on connecting ribs according to claim 3, characterized in that: The through hole is a rounded rectangle.

5. The direct-connection pseudo-elliptic dielectric resonator filter based on connecting ribs according to claim 3, characterized in that: The length direction of the through hole is the same as the diagonal direction of the single-mode dielectric resonator; The combination of the various through holes is axially symmetrical.

6. The direct-connected pseudo-elliptic dielectric resonator filter based on connecting ribs according to any one of claims 3-5, characterized in that: In the integrated multi-stage dielectric resonator, the single-mode dielectric resonator at the very beginning is provided with a first groove, and the single-mode dielectric resonator at the very end is provided with a second groove. The other end of the first feed probe extends into the through-hole of the single-mode dielectric resonator located at the very beginning through the first groove; the first feed probe is suspended in the first groove; The other end of the second feed probe extends through the second groove into the through hole of the single-mode dielectric resonator located at the far end; the second feed probe is suspended in the second groove.

7. The direct-connected pseudo-elliptic dielectric resonator filter based on connecting ribs according to any one of claims 1-5, characterized in that, The medium support column includes: A first support post; the first support post is installed in the sub-cavity at the very beginning, and the first support post is used to support the single-mode dielectric resonator at the very beginning; The second support column is installed in the outermost sub-cavity and is used to support the outermost single-mode dielectric resonator.

8. The direct-connected pseudo-elliptic dielectric resonator filter based on connecting ribs according to any one of claims 1-5, characterized in that, The direct-connection pseudo-elliptic dielectric resonator filter based on connecting ribs also includes: Cover plate; the cover plate is connected to the shielding cavity, and the cover plate covers each sub-cavity and each inductive coupling window.

9. The direct-connected pseudo-elliptic dielectric resonator filter based on connecting ribs according to any one of claims 1-5, characterized in that, The single-mode dielectric resonator and the connecting rib are made of a high dielectric constant material.

10. The direct-connection pseudo-elliptic dielectric resonator filter based on connecting ribs according to claim 9, characterized in that, The dielectric support pillar is made of a low dielectric constant material.

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