A heterogeneous resonator based antenna and filter integrated device

Abstract

The application discloses an antenna and filter integrated device based on a heterogeneous resonator, and belongs to the technical field of wireless communication.The antenna and filter integrated device based on the heterogeneous resonator comprises a first dielectric substrate, a heterogeneous resonator, a filter feed structure, a second dielectric substrate, a reflecting floor and an antenna feed structure, wherein the heterogeneous resonator is arranged on the upper surface of the first dielectric substrate, the filter feed structure is arranged on the upper surface of the first dielectric substrate, the upper surface of the second dielectric substrate is opposite to the lower surface of the first dielectric substrate, the reflecting floor is arranged between the lower surface of the first dielectric substrate and the upper surface of the second dielectric substrate, and the antenna feed structure is arranged on the second dielectric substrate.The application has the advantages that the antenna and filter functions are integrated in the same device, the working bandwidth of the antenna channel is large, the loss of the filter channel is low, the bandwidth of the filter channel is wide, the profile of the filter channel is low, and the frequency ratio tuning range of the antenna and the filter channel is large.The application is widely applied in the field of wireless communication technology.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless communication, and particularly relates to an antenna and filter integrated device based on heterogeneous resonators. BACKGROUND

[0002] With the rapid development of wireless communication systems, the number of radio frequency modules is increasing to meet the needs of high-speed data transmission, multi-band coverage and multi-communication standard coverage. In order to reduce the size and cost of wireless communication systems, researchers have begun to pay extensive attention to multi-functional radio frequency modules. In the radio frequency front-end circuit, the antenna and the filter both play a crucial role.

[0003] Currently, the scheme of integrating the antenna and the filter into a multi-functional radio frequency module mainly includes two types, namely series integration and parallel integration. The series integration scheme is for the antenna and the filter working in the same communication link and at the same frequency, and a typical design is a filter antenna, that is, the filter characteristics are integrated into the antenna. This scheme has only one signal transmission channel and can only serve one communication system. The parallel integration scheme retains the independent channels of the antenna and the filter, thereby constructing a multi-functional radio frequency module with multiple input and output ports. The antenna and the filter are integrated together by sharing resonators or sharing apertures, and they can work at the same frequency band to serve the same communication system, or work at different frequencies to simultaneously serve multiple communication systems, such as mobile communication, WiFi, etc.

[0004] The shielding cavity of the dielectric resonator filter conflicts with the open environment of the dielectric resonator antenna, and it is difficult to perform parallel integration, so the current technology cannot combine the high quality factor and large design freedom of the dielectric resonator with the antenna and the filter.

[0005] Even if some related technologies use polarization filter cavities and suspended metal discs to suppress the radiation of the filter band while allowing the radiation of the antenna band, thereby realizing the parallel integration of the antenna and the filter, such a method significantly increases the profile of the dielectric resonator, making it difficult to realize miniaturization, and itself has the problems of narrow operating bandwidth and large filter loss; and if microstrip resonators with lower profiles are used instead of dielectric resonators for parallel integration, the problems of narrow operating bandwidth and large filter loss still exist. SUMMARY

[0006] In view of the problems of high profile, narrow operating bandwidth and large filter loss in the parallel integration of the antenna and the filter, the present application aims to provide an antenna and filter integrated device based on heterogeneous resonators.

[0007] Embodiments of the present application include a heterogeneous resonator-based antenna and filter integrated device, comprising:

[0008] a first dielectric substrate;

[0009] a heterogeneous resonator disposed on an upper surface of the first dielectric substrate;

[0010] a filter feed structure disposed on the upper surface of the first dielectric substrate;

[0011] a second dielectric substrate, an upper surface of the second dielectric substrate opposing a lower surface of the first dielectric substrate;

[0012] a reflective floor disposed between the lower surface of the first dielectric substrate and the upper surface of the second dielectric substrate;

[0013] an antenna feed structure disposed on the second dielectric substrate.

[0014] Further, the heterogeneous resonator includes a stepped dielectric block, a first metal sheet, and a second metal sheet.

[0015] The first metal sheet is disposed on one stepped side of the stepped dielectric block, and the second metal sheet is disposed on another stepped side of the stepped dielectric block.

[0016] Further, the stepped dielectric block includes a platform portion, a first protruding portion, and a second protruding portion.

[0017] The first protruding portion is located on one edge of a top surface of the platform portion, and the second protruding portion is located on another edge of the top surface of the platform portion.

[0018] An extension direction of the first protruding portion is parallel to an extension direction of the second protruding portion.

[0019] Further, a ratio of a height of the platform portion to a height of the platform portion plus the first protruding portion is a height ratio value.

[0020] The height ratio value is greater than or equal to a first value and less than or equal to a second value.

[0021] Further, the filter feed structure includes a first microstrip structure and a second microstrip structure.

[0022] The first microstrip structure is disposed on a side on which the first metal sheet is disposed, and the second microstrip structure is disposed on a side on which the second metal sheet is disposed.

[0023] The extending direction of the first microstrip structure is parallel to the first metal sheet, and the extending direction of the second microstrip structure is parallel to the second metal sheet.

[0024] The first microstrip structure and the second microstrip structure are centrally symmetric.

[0025] Further, the first microstrip structure and the second microstrip structure respectively include a narrower portion and a wider portion.

[0026] The narrower portion of the first microstrip structure is directly opposite to the first metal sheet, and the wider portion of the first microstrip structure extends from one end of the narrower portion of the first microstrip structure to the edge of the first dielectric substrate.

[0027] The narrower portion of the second microstrip structure is directly opposite to the second metal sheet, and the wider portion of the second microstrip structure extends from one end of the narrower portion of the second microstrip structure to the edge of the first dielectric substrate.

[0028] Further, the extending direction of the first protruding portion and the second protruding portion is perpendicular to the extending direction of the first microstrip structure and

[0029] the extending direction of the second microstrip structure.

[0030] Further, the antenna feeding structure includes the third microstrip structure and a rectangular slot.

[0031] The third microstrip structure is arranged on the lower surface of the second dielectric substrate.

[0032] The rectangular slot is located on the reflecting floor.

[0033] The rectangular slot is located on the reflecting floor.

[0034] Further, the extending direction of the third microstrip structure is perpendicular to the extending direction of the rectangular slot.

[0035] Further, the third microstrip structure includes a narrower portion and a wider portion.

[0036] The narrower portion of the third microstrip structure extends from the edge of the second dielectric substrate to within the projection of the stepped dielectric block.

[0037] The wider portion of the third microstrip structure extends from one end of the narrower portion of the third microstrip structure, from within the projection of the stepped dielectric block to outside the projection of the stepped dielectric block.

[0038] The beneficial effects of the present application are: the antenna and filter integrated device based on the heterogeneous resonator in the embodiment has the advantages of integrating the antenna and filter functions in the same device, large working bandwidth of the antenna channel, low loss, wide bandwidth and low profile of the filter channel, large frequency ratio tuning range of the antenna and filter channels, etc. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 Figure 1 is a structural exploded view of the antenna and filter integrated device based on the heterogeneous resonator in the embodiment.

[0040] Figure 2 Figure 2 is a structural top view of the antenna and filter integrated device based on the heterogeneous resonator in the embodiment, and (b) is a size parameter diagram.

[0041] Figure 3 Figure 3 is a structural side view of the antenna and filter integrated device based on the heterogeneous resonator in the embodiment, and (b) is a size parameter diagram.

[0042] Figure 4 Figure 4 is a reflection coefficient curve diagram of the filter channel in the embodiment.

[0043] Figure 5 Figure 5 is a transmission coefficient curve diagram of the filter channel in the embodiment.

[0044] Figure 6 Figure 6 is a reflection coefficient curve diagram of the antenna channel in the embodiment.

[0045] Figure 7 Figure 7 is a gain curve diagram of the antenna channel in the embodiment.

[0046] Figure 8 Figure 8 is an isolation curve diagram of the filter channel and the antenna channel in the embodiment.

[0047] Figure 9 Figure 9 is a radiation pattern diagram of the antenna and filter integrated device based on the heterogeneous resonator in the embodiment at 6.54GHz, phi=0deg.

[0048] Figure 10 Figure 10 is a radiation pattern diagram of the antenna and filter integrated device based on the heterogeneous resonator in the embodiment at 6.54GHz, phi=90deg.

[0049] Figure 11 Figure 11 is a radiation pattern diagram of the antenna and filter integrated device based on the heterogeneous resonator in the embodiment at 6.84GHz, phi=0deg.

[0050] Figure 12Radiation pattern of the example integrated device of the antenna and filter based on the heterogeneous resonator at 6.84 GHz, phi = 90 deg. DETAILED DESCRIPTION

[0051] In this embodiment, the structure of the integrated device of the antenna and filter based on the heterogeneous resonator is shown in FIG. 1, which includes a stepped dielectric block, a first metal sheet, a second metal sheet, a first microstrip structure, a second microstrip structure, a first dielectric substrate, a reflecting floor, a rectangular slot, a second dielectric substrate, and a third microstrip structure. Figure 1

[0052] In this embodiment, the side view of the integrated device of the antenna and filter based on the heterogeneous resonator is shown in FIG. 2. Referring to part (a) of FIG. 2, the stepped dielectric block includes a platform portion, a first protruding portion, and a second protruding portion. The first protruding portion is located at one edge of the top surface of the platform portion, and the second protruding portion is located at another edge of the top surface of the platform portion. The extending direction of the first protruding portion is parallel to the extending direction of the second protruding portion, for example, the long sides of the first protruding portion and the second protruding portion in FIG. 2 both extend along the y-axis direction. Figure 2 Figure 2 Figure 2

[0053] In this embodiment, the stepped dielectric block can be made of a dielectric material with a dielectric constant of 36. Specifically, the platform portion, the first protruding portion, and the second protruding portion can be made separately and then combined together, or a raw material blank can be made first and then cut into the stepped dielectric block as shown in FIG. 1. Figure 2

[0054] Referring to FIG. 2, from the y-axis direction, the stepped dielectric block has a "concave" shaped stepped side surface. Referring to FIGS. 1 and 2, the first metal sheet is arranged on one stepped side surface of the stepped dielectric block, and the second metal sheet is arranged on another stepped side surface of the stepped dielectric block. The first metal sheet and the second metal sheet can be made of silver, manganese, copper, tin, or nickel. Figure 2 Figure 1 Figure 2 In this embodiment, the stepped dielectric block and the first metal sheet and the second metal sheet attached to the stepped dielectric block form a heterogeneous resonator. Specifically, the first metal sheet and the second metal sheet are fixed on the two side surfaces of the stepped dielectric block parallel to the x-axis by a printing process.

[0055]

[0056] ​​​​​​​​In this embodiment, both the first dielectric substrate and the second dielectric substrate are rectangular thin plates. The lower surface of the heterogeneous resonator is opposite to the upper surface of the first dielectric substrate, and the lower surface of the first dielectric substrate is opposite to the upper surface of the second dielectric substrate. The terms "upper surface" and "lower surface" are only used to distinguish the two surfaces of an object and do not imply that the "upper surface" must face upwards or the "lower surface" must face downwards when the antenna and filter integrated device of this invention is operating. (Refer to...) Figure 1 With the positive z-axis as the reference, the surface farther from the origin is the upper surface of the object, and the surface closer to the origin is the lower surface of the object. In this embodiment, the antenna and filter integrated device forms a structure from top to bottom consisting of a heterogeneous resonator, a first dielectric substrate, a reflective ground plane, and a second dielectric substrate.

[0057] In this embodiment, refer to Figure 1 The upper surface of the first dielectric substrate is provided with a first microstrip structure and a second microstrip structure, the lower surface of the first dielectric substrate is provided with a reflective ground plane, and the lower surface of the second dielectric substrate is provided with a third microstrip structure.

[0058] In this embodiment, the first microstrip structure, the second microstrip structure, and the reflective ground plane are fixed on the first dielectric substrate using a microstrip process. The first metal sheet and the second metal sheet are parallel to the first microstrip structure and the second microstrip structure, respectively. The first microstrip structure and the second microstrip structure are centrally symmetrically distributed with the center of the heterogeneous resonator as the reference. The first dielectric substrate is made of Rogers 4003C material with a thickness of 0.508 mm and a dielectric constant of 3.55.

[0059] In this embodiment, the third microstrip structure is fixed to the second dielectric substrate using a microstrip process. The second dielectric substrate is made of Rogers 4003C material with a thickness of 0.508 mm and a dielectric constant of 3.55. The reflective ground plane completely covers the lower surface of the first dielectric substrate, and a rectangular slot is formed inside the reflective ground plane. A top view of the antenna and filter integrated device based on heterogeneous resonators is shown below. Figure 3 As shown. (Refer to...) Figure 3 In part (a), the reflective floor is made of metal, meaning the metal material completely covers the entire lower surface of the second dielectric substrate, thus forming the reflective floor. A rectangular groove is created inside the reflective floor by removing a certain amount of metal material at appropriate locations; that is, no metal material is present at the location of the rectangular groove. The long side of the rectangular groove is parallel to the rectangular metal sheet, and the projection of the third microstrip structure onto the reflective floor intersects perpendicularly with the long side of the rectangular groove.

[0060] In this embodiment, the first microstrip structure and the second microstrip structure form a filter feeding structure, thereby realizing the filter function in the antenna and filter integrated device based on heterogeneous resonators. Specifically, refer to... Figure 3The specific working principle of the integrated device of the antenna and filter based on the heterogeneous resonator is as follows: when the filter function is used, the energy is input from the first microstrip structure, then the first metal sheet is excited by the coupling feed, the energy is coupled between the first metal sheet and the second metal sheet through the stepped dielectric block clamped therebetween, and finally the filtered energy is output through the second microstrip structure; since the first microstrip structure and the second microstrip structure are symmetrical, the energy can also be input from the second microstrip structure, and the energy is output from the first microstrip structure; when the integrated device of the antenna and filter based on the heterogeneous resonator implements the filter function, the stepped dielectric block plays the role of a non-resonant dielectric waveguide rather than a dielectric resonator, and if the stepped dielectric block does not exist between the first metal sheet and the second metal sheet, the electric field between the first metal sheet and the second metal sheet will spread to the free space, only a small amount of electric field can be coupled from one metal sheet to the other metal sheet, and the stepped dielectric block can effectively limit the electric field and enhance the coupling between the two metal sheets; since the stepped dielectric block is non-resonant and does not radiate, the integrated device of the antenna and filter based on the heterogeneous resonator does not need a closed metal shell to achieve low dielectric loss, and compared with the traditional microstrip filter, the filter channel of the integrated device of the antenna and filter based on the heterogeneous resonator in the embodiment has smaller insertion loss; and since the first metal sheet and the second metal sheet respectively serve as the first and second order resonators of the filter channel, and the two rectangular metal sheets are printed on the stepped dielectric block with high dielectric constant, the size can be significantly reduced.

[0061] In the embodiment, the third microstrip structure and the rectangular slot together constitute an antenna feed structure, thereby realizing the antenna function in the integrated device of the antenna and filter based on the heterogeneous resonator. Specifically, the specific working principle of the integrated device of the antenna and filter based on the heterogeneous resonator is as follows: the energy is input from the third microstrip structure, then the coupling feed is generated through the rectangular slot to excite the stepped dielectric block, resonance is generated inside the stepped dielectric block, and finally the energy is radiated to the outside; the antenna realized by the integrated device of the antenna and filter based on the heterogeneous resonator belongs to the dielectric resonator antenna, and the stepped dielectric block in the heterogeneous resonator plays the role of the dielectric resonator when the antenna operates, but the surface of the traditional dielectric resonator is in contact with air and is equivalent to a magnetic wall, while the reference Figure 2 Since the first metal sheet and the second metal sheet are printed on the two sides parallel to the x-axis in the heterogeneous resonator as the dielectric resonator, the two surfaces of the dielectric resonator can be equivalent to electric walls; since the two electric walls exist and are arranged face to face on the two sides of the dielectric resonator, the electric field distribution of the resonant mode in the dielectric resonator along the y-axis direction can have zero half-wave distribution; the dielectric resonator antenna in the embodiment adopts two modes belonging to the type as the working mode, i.e. mode and Mode, the subscripts m, n and p represent the number of half cycles along the x-axis, y-axis and z-axis direction respectively. Mode, there is one half-wave distribution along the x-axis and the resonant frequency is low, Mode, there are two half-wave distributions along the y-axis and the resonant frequency is high. On the two sides of the dielectric resonator parallel to the y-axis, Mode, the electric field intensity is significantly higher than Mode, the electric field intensity, so the two sides of the stepped dielectric resonator are formed by the protruding parts. As the height of the protruding parts on the two sides of the dielectric resonator is higher, Mode, the resonant frequency gradually moves down, while Mode, the resonant frequency changes less. When the heights of the two sides of the stepped dielectric block parallel to the y-axis are selected appropriately, the frequencies of the two resonant modes will be close and tightly coupled, thereby increasing the operating bandwidth of the antenna channel in the antenna and filter integrated device based on the heterogeneous resonator.

[0062] The isolation of the antenna channel and the filter channel in the embodiment is an important indicator of the independence of the two channels. Within the operating bandwidth of the filter, the stepped dielectric block acts as a dielectric waveguide, and the electric field of the stepped dielectric as a waveguide is parallel to the long edges of the first metal sheet and the second metal sheet, while the electric field of the rectangular slot is perpendicular to the long edges of the first metal sheet and the second metal sheet, so the electric field directions of the dielectric waveguide and the rectangular slot are perpendicular and orthogonal, resulting in a high isolation within the operating bandwidth of the filter. Within the operating bandwidth of the antenna, the stepped dielectric block acts as a dielectric resonator, and the electric field direction of the dielectric resonator is perpendicular and orthogonal to the current direction of the filter, so a high isolation is also produced within the operating bandwidth of the antenna.

[0063] Through the structures shown in Figure 1 , Figure 2 and Figure 3 , the antenna and filter integrated device based on the heterogeneous resonator in the embodiment has the following technical effects:

[0064] (1) Bandwidth enhancement of the antenna channel: the heterogeneous resonator appears as a stepped dielectric resonator with the first metal sheet and the second metal sheet printed on the two sides, which is used as a radiator of the antenna; by adjusting the height of the protruding parts on the two sides of the stepped dielectric block, Mode, the frequency moves down and approaches Mode, thereby improving the operating bandwidth of the antenna channel;

[0065] (2) The filter channel has low loss, wide bandwidth and low profile: the heterogeneous resonator is composed of two metal sheet resonators and a stepped dielectric block sandwiched therebetween, and the stepped dielectric block serves as a waveguide; the first metal sheet and the second metal sheet serve as: two resonators of the heterogeneous filter to improve the operating bandwidth of the filter, and the stepped dielectric block can serve as a low-loss non-resonant dielectric waveguide through the mutual coupling of the first metal sheet, the second metal sheet and the stepped dielectric block, so that an additional shielding structure is not needed, thereby achieving the advantages of low profile and low loss;

[0066] (3) The frequency ratio tuning range of the antenna and the filter channel is large: in the design of a conventional antenna and filter integrated device, the antenna and the filter both work in the resonant mode of a shared dielectric resonator, resulting in a small frequency ratio tuning range of the two channels; in the present embodiment, the antenna and filter integrated device based on the heterogeneous resonator uses a heterogeneous resonator, i.e., the resonator of the antenna is a dielectric resonator, and the resonator of the filter is a metal sheet resonator, and the correlation between different types of resonators is low, thereby achieving greater design freedom, and making the frequency ratio tuning range of the antenna and the filter channel in the present embodiment large.

[0067] In the present embodiment, with reference to Figure 3 , the first microstrip structure, the second microstrip structure and the third microstrip structure each include a narrower portion and a wider portion. The narrower portion of the first microstrip structure is directly opposite the first metal sheet, and the wider portion of the first microstrip structure extends from one end of the narrower portion of the first microstrip structure to the edge of the first dielectric substrate; the narrower portion of the second microstrip structure is directly opposite the second metal sheet, and the wider portion of the second microstrip structure extends from one end of the narrower portion of the second microstrip structure to the edge of the first dielectric substrate; the narrower portion of the third microstrip structure extends from the edge of the second dielectric substrate to within the projection of the stepped dielectric block, and the wider portion of the third microstrip structure extends from one end of the narrower portion of the third microstrip structure to outside the projection of the stepped dielectric block.

[0068] The technical effects of the present application are mainly brought about by the structure of the present application, and are also related to the specific values of the following parameters: the length L of the stepped dielectric block d , the width W of the middle recessed portion (i.e., the portion of the top surface of the platform portion not covered by the first protruding portion and the second protruding portion) of the stepped dielectric block d , the height H of the middle recessed portion (i.e., the platform portion) of the stepped dielectric block d , the width W of the side protruding portion (i.e., the first protruding portion and the second protruding portion) of the stepped dielectric block t , and the height H of the side protruding portion (i.e., the first protruding portion and the second protruding portion) of the stepped dielectric block tLength L of the first metal sheet (or the second metal sheet) s Width W of the first metal sheet (or the second metal sheet) s Length Lf1 of the narrower portion of the first microstrip structure and the second microstrip structure, width Wf1 of the narrower portion of the first microstrip structure and the second microstrip structure, length Lf2 of the wider portion of the first microstrip structure and the second microstrip structure, width Wf2 of the wider portion of the first microstrip structure and the second microstrip structure, distance D between the first microstrip structure and the stepped dielectric block f Distance D between the second microstrip structure and the stepped dielectric block f Length L of the first dielectric substrate and the second dielectric substrate g Width W of the first dielectric substrate and the second dielectric substrate g Height H of the first dielectric substrate and the second dielectric substrate g Length L of the rectangular slot c Width W of the rectangular slot c Length Lf3 of the narrower portion of the third microstrip structure, width Wf3 of the narrower portion of the third microstrip structure, length Lf4 of the wider portion of the third microstrip structure, width Wf4 of the wider portion of the third microstrip structure. The above parameters are indicated in (b) of the first embodiment and (b) of the second embodiment. Figure 1 Figure 2 Figure 3

[0069] In the embodiments, the external quality factor of the filter, the numerical value of the coupling coefficient between the first metal sheet and the second metal sheet are closely related to the performance of the filter; the size of the first microstrip structure and the second microstrip structure is related to the external quality factor of the filter, and the external quality factor of the filter gradually increases with the increase of the width of the narrower portion of the two microstrip structures or the distance between the two microstrip structures and the metal sheet. The size of the dielectric block and the metal sheet is related to the coupling coefficient of the metal sheet. Therefore, appropriate size values can be selected.

[0070] For example, in the embodiments, the height ratio H d / (H d +H t ) of the height H d of the platform portion of the heterogeneous resonator to the height (H d +H t ) of the first protruding portion superimposed on the platform portion is greater than or equal to a first value (0.2) and less than or equal to a second value (0.7); the height ratio H d of the height H t ​​​The ratio between them is not less than 0.5 and not greater than 1; the length L of the first metal sheet and the second metal sheet s The length L of the stepped medium block d The ratio L between s / L d Not less than 0.5 and not greater than 1. As the length L of the stepped medium block increases... d As the height or length of the first and second metal sheets increases, the coupling coefficient between the first and second metal sheets will gradually decrease.

[0071] In this embodiment, according to Figure 1 , Figure 2 and Figure 3 The antenna and filter integrated devices were fabricated using the structures shown in the diagram and the parameters shown in Table 1. The performance of the antenna and filter integrated devices was simulated and measured. The simulation results and measured results are as follows: Figures 4 to 12 As shown.

[0072] Table 1

[0073] Parameter [[ L d ]]> [WC d ]]> H d ]]> [WC t ]]> H t ]]> [[ L s ]]> [WC s ]]> Value (mm) 10 7.3 2 2 1.2 10 2 Parameter ​ [["Wf1"]] ​ [["wf2"]] D f ]]> [[ L g ]]> [WC g <!-- 6 -->]]> Value (mm) 11.5 0.2 12 1.4 0.5 35 35 Parameter H g ]]> [[ L c ]]> [WC c ]]> ​ [["Wf3"]] [LF4] [CD AT Wf4] Value (mm) 0.508 6 0.8 14 1.2 9.3 1.3

[0074] Figures 4 to 12 In the diagram, solid lines represent simulation results, and dashed lines represent measured results. Figure 4 This is a reflection coefficient curve of the filter channel in this embodiment. It can be clearly seen from the figure that there are two resonant frequency points, realizing the response of a second-order bandpass filter. The measured 3dB relative bandwidth is 16.1% (4-4.7GHz), and the simulated 3dB relative bandwidth in HFSS software is 15.7% (4-4.68GHz). Figure 5 The image shows the transmission coefficient curve of the filter channel in this embodiment. The measured minimum in-band insertion loss is 0.75dB, and the simulated minimum in-band insertion loss on HFSS software is 0.55dB. The high-frequency out-of-band 20dB suppression range is 5.3-8GHz, which shows good out-of-band suppression capability. Figure 6 This is a reflection coefficient curve of the antenna channel in this embodiment. As can be seen from the graph, there are two resonant frequency points; the lower frequency resonant point is formed by the dielectric resonator. Mode generation, higher frequency resonators are generated by dielectric resonators. Mode generation, measured 10dB impedance bandwidth (|S) 11 The impedance bandwidth (<-10dB) is 7.7% (6.38-6.89GHz), and the 10dB impedance bandwidth simulated on HFSS software is 8.3% (6.34-6.89GHz). Figure 7The image shows the gain curve of the antenna channel in this embodiment. The in-band gain is relatively flat with fluctuations within 0.5dB. The measured peak gain is 6.7dBi, and the simulated peak gain in HFSS software is 6.9dBi. Figure 8 This is a transmission coefficient curve between the filter channel and the antenna channel in this embodiment. The graph shows that in the 4-4.7 GHz frequency range, the measured isolation between the filter channel and the antenna channel is greater than 30.3 dB, and the simulated isolation in HFSS software is greater than 30.1 dB. In the 6.4-6.9 GHz frequency range, the measured isolation between the filter channel and the antenna channel is greater than 21.4 dB, and the simulated isolation in HFSS software is greater than 21.3 dB. Figures 4 to 8 As can be seen, the measured results and the simulation results are in good agreement.

[0075] Reference Figures 9 to 12 , Figure 9 This is the radiation pattern of the antenna channel in this embodiment at 6.54 GHz, phi = 0 degrees. Figure 10 The radiation pattern of the antenna channel in this embodiment is at a frequency of 6.54 GHz and phi = 90 degrees. Figure 11 The image shows the radiation pattern of the antenna channel in this embodiment at a frequency of 6.84 GHz and phi = 0 degrees. Figure 9 This is the radiation pattern of the antenna channel in this embodiment at a frequency of 6.84 GHz and phi = 90 degrees. From... Figures 9 to 12 It can be inferred that the measured radiation pattern is roughly similar to the simulated radiation pattern. The measured radiation pattern is stable throughout the entire operating bandwidth of the antenna channel. In the measured results at the two resonant frequencies, the cross-polarization level is at least 20 dB lower than the main polarization level, while in the simulation results, the cross-polarization level is at least 25 dB lower than the main polarization level. Figures 9 to 12 The slight differences between the measurement results and the simulation results are mainly due to manufacturing errors and unavoidable losses and interference from the SMA connectors used in the measurement process.

[0076] It should be noted that, as used in this disclosure and unless otherwise specified, an "and / or," where used, refers to a combination of that which is specified and / or one or both described with such term. In other words, "A, B, and / or C" means "only A," "only B," "only C," "A and B," "A and C," "B and C," or "A and B and C." It should also be noted that, as used in this disclosure and unless otherwise specified, a "coupled" or "connected" or "fixed" or "attached" or "connected" or "engaged" or "mounted" or similar specifications is not necessarily direct, and can be indirect.

[0077] It should be understood that, although the terms first, second, third, etc. can be used herein to describe various elements, these elements should not be limited to these terms. These terms are only used to distinguish one element from another. For example, a first element could also be termed a second element, and, similarly, a second element could also be termed a first element, without departing from the scope of the present disclosure. The use of any and all examples, or exemplary language (e.g., "such as" "for instance" etc.), provided herein, is intended merely to better illuminate the present embodiments and does not pose a limitation on the scope of the present disclosure unless otherwise claimed.

[0078] It should be appreciated that embodiments of the present application can be realized by either computer hardware, a combination of hardware and software, or by computer instructions stored in a non-transitory computer-readable memory. The methods can be implemented in a computer program, using standard programming techniques, including the configuration of non-transitory computer-readable storage media with a computer program, wherein the storage media so configured that the computer operates in a specific and predefined manner according to the methods described in the specific embodiments and the accompanying drawings. Each program can be implemented in a high-level procedural or object-oriented programming language to communicate with a computer system. However, the program can be implemented in assembly or machine language if desired. In any case, the language can be a compiled or interpreted language. Furthermore, the program can be able to run on a specially programmed integrated circuit for this purpose.

[0079] Further, the operations of the processes described in this embodiment can be performed in any suitable order, unless otherwise indicated herein or otherwise clearly contradicted by context. The processes described in this embodiment (or variations and / or combinations thereof) can be implemented under the control of one or more computer systems configured with executable instructions (e.g., computer programs, one or more computer programs, or one or more applications), by hardware, or combinations thereof. The computer programs include a plurality of instructions that are executable by one or more processors.

[0080] Further, the methods can be implemented in any suitable type of computing platform operatively coupled to, including but not limited to, a personal computer, mini-computer, mainframe, workstation, networked or distributed computing environment, separate or integrated computer platform, or in communication with a charged particle tool or other imaging device, etc. Aspects of the present application can be implemented in 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 media, RAM, ROM, etc., such that it is readable by a programmable computer and, when the storage medium or device is read by a computer, is used to configure and operate the computer to perform the processes described herein. Further, the machine readable code, or portions thereof, can be transmitted over wired or wireless networks. The present application encompasses these and other different types of non-transitory computer readable storage media when the instructions or programs implementing the above steps are included in conjunction with a microprocessor or other data processor. The present application also encompasses the computer itself when programmed in accordance with the methods and techniques of the present application.

[0081] The computer programs are capable of applying to input data to perform the functions of the present embodiment, thereby transforming the input data to generate output data that is stored to 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 present application, the transformed data represents a physical and tangible object, including a particular visual depiction of the physical and tangible object produced on a display.

[0082] The above merely preferred embodiments of the present application and are not intended to limit the present application thereto, as long as the same technical effects are achieved by the same means. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the present application. The technical solutions and / or embodiments of the present application can have various modifications and changes within the scope of the present application.

Claims

1. A metamaterial resonator based antenna and filter integrated device, comprising: The integrated device of the antenna and filter based on the heterogeneous resonator comprises: a first dielectric substrate; a heterogeneous resonator, which is arranged on the upper surface of the first dielectric substrate, and comprises a stepped dielectric block, a first metal sheet arranged on one stepped side of the stepped dielectric block, and a second metal sheet arranged on another stepped side of the stepped dielectric block; a filter feed structure, which is arranged on the upper surface of the first dielectric substrate, and comprises a first microstrip structure arranged on the side where the first metal sheet is located and a second microstrip structure arranged on the side where the second metal sheet is located, the extension direction of the first microstrip structure is parallel to the first metal sheet, the extension direction of the second microstrip structure is parallel to the second metal sheet, and the first microstrip structure and the second microstrip structure are centrally symmetric; a second dielectric substrate, the upper surface of which is opposite to the lower surface of the first dielectric substrate; a reflecting floor, which is arranged between the lower surface of the first dielectric substrate and the upper surface of the second dielectric substrate; and an antenna feed structure, which is arranged on the second dielectric substrate.

2. The integrated device of the antenna and filter based on the heterogeneous resonator according to claim 1, wherein: the stepped dielectric block comprises a platform portion, a first protruding portion, and a second protruding portion; the first protruding portion is located at one edge of the top surface of the platform portion, and the second protruding portion is located at another edge of the top surface of the platform portion; the extension direction of the first protruding portion is parallel to the extension direction of the second protruding portion.

3. The integrated device of the antenna and filter based on the heterogeneous resonator according to claim 2, wherein: the ratio of the height of the platform portion to the height of the platform portion plus the first protruding portion is a height ratio value; the height ratio value is greater than or equal to a first numerical value and less than or equal to a second numerical value.

4. The integrated device of the antenna and filter based on the heterogeneous resonator according to claim 2 or 3, wherein: the first microstrip structure and the second microstrip structure each comprise a narrower portion and a wider portion; the narrower portion of the first microstrip structure is directly opposite to the first metal sheet, and the wider portion of the first microstrip structure extends from one end of the narrower portion of the first microstrip structure to the edge of the first dielectric substrate; the narrower portion of the second microstrip structure is directly opposite to the second metal sheet, and the wider portion of the second microstrip structure extends from one end of the narrower portion of the second microstrip structure to the edge of the first dielectric substrate.

5. The integrated device of the antenna and filter based on the heterogeneous resonator according to claim 4, wherein: the extension direction of the first protruding portion and the second protruding portion is perpendicular to the extension direction of the first microstrip structure and the second microstrip structure. ​ 6.The heterogeneous resonator-based antenna and filter integrated device of claim 2 or 3, wherein: the antenna feed structure comprises a third microstrip structure and a rectangular slot; the third microstrip structure is disposed on a lower surface of the second dielectric substrate; and the rectangular slot is located on the reflecting floor. 7.The heterogeneous resonator-based antenna and filter integrated device of claim 6, wherein: an extension direction of the third microstrip structure is perpendicular to an extension direction of the rectangular slot. 8.The heterogeneous resonator-based antenna and filter integrated device of claim 6, wherein: the third microstrip structure comprises a narrower portion and a wider portion; the narrower portion of the third microstrip structure extends from an edge of the second dielectric substrate to within a projection of the stepped dielectric block; and the wider portion of the third microstrip structure extends from one end of the narrower portion of the third microstrip structure, from within the projection of the stepped dielectric block to outside the projection of the stepped dielectric block. ​ ​ ​ ​ ​ ​ ​

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