Antenna and filter integrated device based on heterogeneous resonators

Abstract

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

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technology, and in particular to an antenna and filter integrated device based on a heterogeneous resonator. Background Art

[0002] With the rapid development of wireless communication systems, the number of RF modules continues to increase to meet the needs of high-speed data transmission, multi-band coverage, and multiple communication standards. In order to reduce the size and cost of wireless communication systems, researchers have begun to pay extensive attention to multifunctional RF modules. In the RF front-end circuit, antennas and filters play a vital role.

[0003] At present, the solutions for integrating antennas and filters into a multifunctional RF module are mainly divided into two categories, namely series integration and parallel integration. The series integration solution is for antennas and filters in the same communication link and working at the same frequency. The typical design is a filter antenna, that is, the filtering characteristics of the filter are integrated into the antenna. This type of solution has only one signal transmission channel and can only serve one communication system. The parallel integration solution retains the independent channels of the antenna and the filter, thereby building a multifunctional RF module with multiple input and output ports. Antennas and filters are integrated together by sharing resonators or shared apertures. They can work in the same frequency band to serve the same communication system, or they can work at different frequencies to serve multiple communication systems at the same time, such as mobile communications, WiFi, etc.

[0004] The shielded cavity of the dielectric resonator filter conflicts with the open environment of the dielectric resonator antenna, making it difficult to integrate them in parallel. Therefore, current technology makes it difficult to combine the advantages of the dielectric resonator, such as high quality factor and large design freedom, with antennas and filters.

[0005] Even though some related technologies use polarization filter cavities and suspended metal disks to suppress radiation in the filter band while allowing radiation in the antenna band, thereby realizing parallel integration of the antenna and the filter, this approach significantly increases the cross-section of the dielectric resonator, making it difficult to achieve miniaturization, and it itself has problems of narrow working bandwidth and large filter loss. If a microstrip resonator with a lower cross-section is used instead of a dielectric resonator for parallel integration, the problem of narrow working bandwidth and large filter loss still exists. Summary of the invention

[0006] In view of the problems currently faced when integrating antennas and filters in parallel, such as high profile, narrow operating bandwidth and large filter loss, the purpose of the present invention is to provide an antenna and filter integrated device based on heterogeneous resonators.

[0007] An embodiment of the present invention includes an antenna and filter integrated device based on a heterogeneous resonator, and the antenna and filter integrated device based on a heterogeneous resonator includes:

[0008] a first dielectric substrate;

[0009] A heterogeneous resonator; the heterogeneous resonator is arranged on the upper surface of the first dielectric substrate;

[0010] A filter feeding structure; the filter feeding structure is arranged on the upper surface of the first dielectric substrate;

[0011] a second dielectric substrate; an upper surface of the second dielectric substrate being opposite to a lower surface of the first dielectric substrate;

[0012] A reflective floor; the reflective floor is arranged between the lower surface of the first dielectric substrate and the upper surface of the second dielectric substrate;

[0013] Antenna feeding structure; the antenna feeding structure is arranged 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 surface of the stepped dielectric block, and the second metal sheet is disposed on the other stepped side surface of the stepped dielectric block.

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

[0017] 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 the other edge of the top surface of the platform portion;

[0018] An extending direction of the first convex portion is parallel to an extending direction of the second convex portion.

[0019] Further, the ratio of the height of the platform portion to the height of the platform portion superimposed on the first protruding portion is a height ratio;

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

[0021] Further, the filter feeding structure includes a first microstrip structure and a second microstrip structure;

[0022] The first microstrip structure is arranged on a side where the first metal sheet is located, and the second microstrip structure is arranged on a side where the second metal sheet is located;

[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 include a narrower portion and a wider portion respectively;

[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 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] Furthermore, the extending directions of the first convex portion and the second convex portion are aligned with the first microstrip structure and

[0029] The second micro

[0030] The extension direction of the belt structure is vertical.

[0031] Further, the antenna feeding structure includes the third microstrip structure and a rectangular slot;

[0032] The third microstrip structure is arranged on the lower surface of the second dielectric substrate;

[0033] The rectangular groove is located on the reflective floor.

[0034] Furthermore, an extension direction of the third microstrip structure is perpendicular to an extension 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 starts from the edge of the second dielectric substrate and extends into the projection of the stepped dielectric block;

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

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

[0039] Figure 1 It is a structural exploded diagram of an antenna and filter integrated device based on a heterogeneous resonator in an embodiment;

[0040] Figure 2 Part (a) is a top view of the structure of the antenna and filter integrated device based on the heterogeneous resonator in the embodiment, and part (b) is a schematic diagram of the size parameters;

[0041] Figure 3 Part (a) is a structural side view of an antenna and filter integrated device based on a heterogeneous resonator in an embodiment, and part (b) is a schematic diagram of size parameters;

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

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

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

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

[0046] Figure 8 is a curve diagram of the isolation between the filter channel and the antenna channel in the embodiment;

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

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

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

[0050] Fig.12: It is the radiation pattern of the antenna and filter integrated device based on the heterogeneous resonator in the embodiment at 6.84GHz, phi=90deg. DETAILED DESCRIPTION

[0051] In this embodiment, the structure of the antenna and filter integrated device based on the heterogeneous resonator is as follows: Figure 1 As shown, it 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 reflective floor, a rectangular slot, a second dielectric substrate and a third microstrip structure.

[0052] In this embodiment, the side view of the antenna and filter integrated device based on the heterogeneous resonator is as follows Figure 2 See Figure 2 In part (a), 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 extension direction of the first protruding portion is parallel to the extension direction of the second protruding portion. Figure 2 The long sides of the first convex portion and the second convex portion both extend along the y-axis direction.

[0053] In this embodiment, a dielectric material with a dielectric constant of 36 can be used to manufacture the stepped dielectric block. Specifically, the platform portion, the first protruding portion, and the second protruding portion can be manufactured separately and then combined together. Alternatively, a raw material blank can be manufactured first and then cut into Figure 2 The stepped dielectric block shown.

[0054] Reference Figure 2 , when viewed from the y-axis direction, the stepped dielectric block has a concave stepped side surface. Figure 1 and Figure 2 The first metal sheet is arranged on one stepped side of the stepped dielectric block, and the second metal sheet is arranged on the other stepped side of the stepped dielectric block. The first metal sheet and the second metal sheet can be made of metals such as silver, manganese, copper, tin or nickel.

[0055] 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 respectively fixed to two side surfaces of the stepped dielectric block parallel to the x-axis through a printing process.

[0056] In this embodiment, the first dielectric substrate and the second dielectric substrate are both 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 "upper surface" and "lower surface" are only used to distinguish the two surfaces of an object, and do not mean that the "upper surface" must be upward or the "lower surface" must be downward when the antenna and filter integrated device of the present invention are working. Figure 1 , taking the positive direction of the z-axis as a reference, the upper surface of the object is farther from the origin of the coordinate system, and the lower surface of the object is closer to the origin of the coordinate system. The antenna and filter integrated device of this embodiment forms a structure of a heterogeneous resonator, a first dielectric substrate, a reflective floor, and a second dielectric substrate from top to bottom.

[0057] In this embodiment, refer to Figure 1 A first microstrip structure and a second microstrip structure are disposed on the upper surface of the first dielectric substrate, a reflective floor is disposed on the lower surface of the first dielectric substrate, and a third microstrip structure is disposed on the lower surface of the second dielectric substrate.

[0058] In this embodiment, the first microstrip structure, the second microstrip structure and the reflection floor are fixed on the first dielectric substrate by a microstrip process, the first metal sheet, the second metal sheet and the first microstrip structure and the second microstrip structure are parallel to each other, and the first microstrip structure and the second microstrip structure are centrally symmetrically distributed with respect to the center of the heterogeneous resonator. The first dielectric substrate is made of Rogers 4003C material, has a thickness of 0.508 mm, and has a dielectric constant of 3.55.

[0059] In this embodiment, the third microstrip structure is fixed on the second dielectric substrate by microstrip process. The second dielectric substrate is made of Rogers4003C material with a thickness of 0.508 mm and a dielectric constant of 3.55. The reflective floor fully covers the lower surface of the first dielectric substrate, and a rectangular groove is opened inside the reflective floor. The top view of the antenna and filter integrated device based on the heterogeneous resonator is shown in FIG. Figure 3 See Figure 3 In part (a), the reflection floor is made of metal material, that is, the metal material completely covers the entire lower surface of the second dielectric substrate, thereby forming a reflection floor. By digging out a certain amount of metal material at the corresponding position, a rectangular groove is opened inside the reflection floor, that is, there is no metal material at the position 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 on the reflection floor intersects the long side of the rectangular groove perpendicularly.

[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 the heterogeneous resonator. Figure 3The specific working principle of the antenna and filter integrated device based on the heterogeneous resonator is as follows: when the filter function is used, energy is input from the first microstrip structure, and then the first metal sheet is excited by coupling feeding. The first metal sheet and the second metal sheet are energy coupled through the stepped dielectric block sandwiched between them, and finally the filtered energy is output through the second microstrip structure; since the first microstrip structure and the second microstrip structure are symmetrical, it is also possible to input energy from the second microstrip structure and output energy from the first microstrip structure in reverse; when the antenna and filter integrated device based on the heterogeneous resonator realizes the filter function, the stepped dielectric block plays the role of a non-resonant dielectric waveguide instead of a dielectric resonator. Assuming that there is no stepped dielectric block between the first metal sheet and the second metal sheet, then the first The electric field between the metal sheet and the second metal sheet will diffuse into the free space, and only a small amount of electric field can be coupled from one metal sheet to another metal sheet, and the stepped dielectric block can effectively limit the electric field, thereby enhancing the coupling between the two metal sheets. Since the stepped dielectric block is non-resonant and does not generate radiation, the antenna and filter integrated device based on the heterogeneous resonator can achieve low dielectric loss without a closed metal casing. Compared with the traditional microstrip filter, the filter channel of the antenna and filter integrated device based on the heterogeneous resonator in this embodiment has a smaller insertion loss. Moreover, since the first metal sheet and the second metal sheet serve as the first and second order resonators of the filter channel respectively, and the two rectangular metal sheets are printed on a stepped dielectric block with a high dielectric constant, the size can be significantly reduced.

[0061] In this embodiment, the third microstrip structure and the rectangular slot together constitute an antenna feeding structure, thereby realizing the antenna function in the antenna and filter integrated device based on the heterogeneous resonator. Specifically, the specific working principle of the antenna and filter integrated device based on the heterogeneous resonator is as follows: energy is input from the third microstrip structure, and then coupled feeding is generated through the rectangular slot to excite the stepped dielectric block, resonance is generated inside the stepped dielectric block, and finally energy is radiated to the outside world; the antenna realized by the antenna and filter integrated device based on the heterogeneous resonator belongs to the dielectric resonator antenna, and the stepped dielectric block in the heterogeneous resonator acts as a dielectric resonator when the antenna is running, but the surface of the traditional dielectric resonator is in contact with the air and is equivalent to a magnetic wall, while the reference Figure 2 , since the two sides parallel to the x-axis in the heterogeneous resonator as the dielectric resonator are respectively printed with the first metal sheet and the second metal sheet, the two surfaces of the dielectric resonator can be equivalent to electric walls; due to the existence of these two electric walls, and they are arranged face to face on both sides of the dielectric resonator, the electric field distribution of the resonant mode along the y-axis direction in the dielectric resonator can have a zero half-wave distribution; the dielectric resonator antenna in this embodiment adopts two Type of mode as the working mode, that is Mode and mode, the subscripts m, n, and p represent the number of half cycles along the x-axis, y-axis, and z-axis directions, respectively. The mode has a half-wave distribution along the x-axis and the resonant frequency is low. The mode has two half-wave distributions along the y-axis and the resonant frequency is high. On both sides of the dielectric resonator parallel to the y-axis, The electric field strength of the mode is significantly higher than The electric field strength of the mode is increased, so the two side protrusions form a stepped dielectric resonator. As the height of the protrusions on both sides of the dielectric resonator increases, The resonant frequency of the mode gradually shifts downward, and The resonant frequency of the mode changes slightly. When the height of the stepped dielectric block is selected appropriately on both sides parallel to the y-axis, the two resonant mode frequencies are close and tightly coupled, thereby increasing the working bandwidth of the antenna channel in the antenna and filter integrated device based on the heterogeneous resonator.

[0062] In this embodiment, the isolation between the antenna channel and the filter channel is an important indicator for determining the working independence of the two channels. Within the working bandwidth of the filter, the stepped dielectric block acts as a dielectric waveguide. The electric field of the stepped dielectric as a waveguide is parallel to the long sides of the first metal sheet and the second metal sheet, while the electric field of the rectangular slot is perpendicular to the long sides of the first metal sheet and the second metal sheet. Therefore, the electric field directions of the dielectric waveguide and the rectangular slot are vertically orthogonal, resulting in a higher isolation within the working bandwidth of the filter. Within the working bandwidth of the antenna, the stepped dielectric block acts as a dielectric resonator. The electric field direction of the dielectric resonator is vertically orthogonal to the current direction of the filter. Therefore, a higher isolation is also generated within the working bandwidth of the antenna.

[0063] pass Figure 1 , Figure 2 and Figure 3 The structure shown in the figure, the technical effects of the antenna and filter integrated device based on the heterogeneous resonator in this embodiment are summarized as follows:

[0064] (1) Bandwidth enhancement of antenna channel: The heterogeneous resonator is a stepped dielectric resonator with a first metal sheet and a second metal sheet printed on both sides, which serves as the radiator of the antenna. By adjusting the height of the raised parts on both sides of the stepped dielectric block, The frequency of the mode shifts down and closer to The frequency of the mode, thereby increasing the working bandwidth of the antenna channel;

[0065] (2) The filter channel has low loss, wide bandwidth and low profile: the heterogeneous resonator is represented by two metal sheet resonators with a stepped dielectric block sandwiched between them, and the stepped dielectric block acts as a waveguide; the first metal sheet and the second metal sheet act as: the two-order resonators of the heterogeneous filter to improve the working bandwidth of the filter, and the stepped dielectric block can be used as a low-loss non-resonant dielectric waveguide through the mutual coupling of the first metal sheet and the second metal sheet and the stepped dielectric block, so no additional shielding structure is required, thereby achieving the advantages of low profile and low loss;

[0066] (3) The frequency ratio tuning range of the antenna and filter channel is larger: In the design of traditional antenna and filter integrated devices, both the antenna and the filter operate in the resonant mode of a shared dielectric resonator, resulting in a smaller frequency ratio tuning range of the two channels. In the present embodiment, the antenna and filter integrated device based on heterogeneous resonators uses heterogeneous resonators, that is, the resonator of the antenna is a dielectric resonator, and the resonator of the filter is a metal sheet resonator. 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 filter channel in this embodiment larger.

[0067] In this embodiment, refer to Figure 3 , the first microstrip structure, the second microstrip structure and the third microstrip structure respectively include a narrower part and a wider part. The narrower part of the first microstrip structure is opposite to the first metal sheet, and the wider part of the first microstrip structure extends from one end of the narrower part of the first microstrip structure to the edge of the first dielectric substrate; the narrower part of the second microstrip structure is opposite to the second metal sheet, and the wider part of the second microstrip structure extends from one end of the narrower part of the second microstrip structure to the edge of the first dielectric substrate; the narrower part of the third microstrip structure starts from the edge of the second dielectric substrate and extends to the projection of the stepped dielectric block, and the wider part of the third microstrip structure starts from one end of the narrower part of the third microstrip structure and extends from the projection of the stepped dielectric block to the outside of the projection of the stepped dielectric block.

[0068] The technical effect of the present invention is mainly brought about by the structure of the present invention, and is 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 of the stepped dielectric block (i.e., the portion of the top surface of the platform portion not covered by the first convex portion and the second convex portion) d , the height H of the middle recessed part (i.e., the platform part) of the stepped dielectric block d , the width W of the side raised portion (i.e., the first raised portion and the second raised portion) of the stepped dielectric block t , the height H of the side raised portion (i.e., the first raised portion and the second raised portion) of the stepped dielectric block t, the length L of the first metal sheet (or the second metal sheet) s , the width W of the first metal sheet (or the second metal sheet) s The length of the narrower part of the first microstrip structure and the second microstrip structure is Lf1, the width of the narrower part of the first microstrip structure and the second microstrip structure is Wf1, the length of the wider part of the first microstrip structure and the second microstrip structure is Lf2, the width of the wider part of the first microstrip structure and the second microstrip structure is Wf2, and the distance D between the first microstrip structure and the stepped dielectric block is f , the distance D between the second microstrip structure and the stepped dielectric block f , the length L of the first dielectric substrate and the second dielectric substrate g , the width W of the first dielectric substrate and the second dielectric substrate g , the height H of the first dielectric substrate and the second dielectric substrate g , the length of the rectangular slot is L c , the width of the rectangular slot W c , the length of the narrower part of the third microstrip structure is Lf3, the width of the narrower part of the third microstrip structure is Wf3, the length of the wider part of the third microstrip structure is Lf4, and the width of the wider part of the third microstrip structure is Wf4. The above parameters have been Figure 1 , Figure 2 Part (b) and Figure 3 Mark part (b) in the figure.

[0069] In this embodiment, the external quality factor of the filter and 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 are related to the external quality factor of the filter, and as the width of the narrower part of the two microstrip structures increases, or as the distance between the two microstrip structures and the metal sheet increases, the external quality factor of the filter will gradually increase. The size of the dielectric block and the metal sheet is related to the coupling coefficient of the metal sheet. Therefore, a suitable size value can be selected.

[0070] For example, in this embodiment, the height H of the platform portion in the heterogeneous resonator is d The height of the first protruding portion overlapping the platform portion (H d +H t ) formed by the height ratio H d / (H d +H t ) is greater than or equal to the first value (0.2) and less than or equal to the second value (0.7); the height H of the platform portion of the stepped dielectric block in the heterogeneous resonator d The height H of the first convex part or the second convex part parallel to the y-axis tThe 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 dielectric block d The ratio L s / L d Not less than 0.5 and not greater than 1. As the length L of the stepped dielectric block d As the height or length of the first metal sheet and the second metal sheet increases, the coupling coefficient between the first metal sheet and the second metal sheet will gradually decrease.

[0071] In this embodiment, according to Figure 1 , Figure 2 and Figure 3 The antenna and filter integrated device are manufactured with the structure shown in the figure and the parameters shown in Table 1, and the performance of the antenna and filter integrated device is simulated and measured. The simulation results and the measured results are shown in Figures 4 to 12 shown.

[0072] Table 1

[0073] parameter <![CDATA[L d ]]> <![CDATA[W d ]]> <![CDATA[H d ]]> <![CDATA[W t ]]> <![CDATA[H t ]]> <![CDATA[L s ]]> <![CDATA[W s ]]> Value(mm) 10 7.3 2 2 1.2 10 2 parameter <![CDATA[Lf1]]> <![CDATA[Wf1]]> <![CDATA[Lf2]]> <![CDATA[Wf2]]> <![CDATA[D f ]]> <![CDATA[L g ]]> <![CDATA[W g <!-- 6 -->]]> Value(mm) 11.5 0.2 12 1.4 0.5 35 35 parameter <![CDATA[H g ]]> <![CDATA[L c ]]> <![CDATA[W c ]]> <![CDATA[Lf3]]> <![CDATA[Wf3]]> <![CDATA[Lf4]]> <![CDATA[Wf4]]> Value(mm) 0.508 6 0.8 14 1.2 9.3 1.3

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

[0075] Reference Figures 9 to 12 , Fig. 9 is the radiation pattern of the antenna channel of this embodiment at 6.54 GHz, phi = 0 deg, Fig.10 The radiation pattern of the antenna channel of this embodiment at a frequency of 6.54 GHz and phi = 90 degrees, Fig.11 is the radiation pattern of the antenna channel of this embodiment at a frequency of 6.84 GHz and phi = 0 deg, Fig. 9 The radiation pattern of the antenna channel of this embodiment at a frequency of 6.84 GHz and phi = 90 degrees. 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 within the working bandwidth of the entire antenna channel. In the measured results at the two resonant frequencies, the cross-polarization level is at least 20dB lower than the main polarization level, and in the simulated results, the cross-polarization level is at least 25dB lower than the main polarization level. Figures 9 to 12 The small differences between the measured and simulated results are mainly due to manufacturing errors and the inevitable losses and interferences in the SMA connector used in the measurement process.

[0076] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature, or it may be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, etc. used in the present disclosure are only relative to the relative positional relationship of the components of the present disclosure in the accompanying drawings. The singular forms of "a", "" and "the" used in the present disclosure are also intended to include the plural forms, unless the context clearly indicates other meanings. In addition, unless otherwise defined, all technical and scientific terms used in this embodiment have the same meaning as those generally understood by those skilled in the art. The terms used in the specification of this embodiment are only for describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this embodiment includes any combination of one or more related listed items.

[0077] It should be understood that, although the term first, second, third etc. may be adopted to describe various elements in the present disclosure, these elements should not be limited to these terms. These terms are only used to distinguish the same type of elements from each other. For example, without departing from the scope of the present disclosure, the first element may also be referred to as the second element, and similarly, the second element may also be referred to as the first element. The use of any and all examples or exemplary language ("for example", "such as" etc.) provided by the present embodiment is only intended to better illustrate embodiments of the present invention, and unless otherwise required, the scope of the present invention will not be limited.

[0078] It should be appreciated that embodiments of the present invention may be implemented or enforced by computer hardware, a combination of hardware and software, or by computer instructions stored in a non-transitory computer-readable memory. The method may be implemented in a computer program using standard programming techniques - including a non-transitory computer-readable storage medium configured with a computer program, wherein the storage medium so configured causes the computer to operate in a specific and predefined manner - according to the methods and drawings described in the specific embodiments. Each program may be implemented in a high-level procedural or object-oriented programming language to communicate with a computer system. However, if desired, the program may be implemented in assembly or machine language. In any case, the language may be a compiled or interpreted language. In addition, the program may be run on a programmed dedicated integrated circuit for this purpose.

[0079] In addition, the operations of the process described in this embodiment may be performed in any suitable order, unless otherwise indicated in this embodiment or otherwise clearly contradicted by the context. The process described in this embodiment (or variations and / or combinations thereof) may be performed under the control of one or more computer systems configured with executable instructions, and may be implemented as a code (e.g., executable instructions, one or more computer programs, or one or more applications) executed on one or more processors in common, by hardware or a combination thereof. A computer program includes a plurality of instructions that may be executed by one or more processors.

[0080] Further, the method can be implemented in any type of computing platform that is operably connected to a suitable computer, including but not limited to a personal computer, a minicomputer, a mainframe, a workstation, a network or distributed computing environment, a separate or integrated computer platform, or in communication with a charged particle tool or other imaging device, etc. Various aspects of the present invention 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, an optical read and / or write storage medium, a RAM, a ROM, etc., so that it can be read 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 process described herein. In addition, the machine-readable code, or part thereof, can be transmitted via a wired or wireless network. When such media includes instructions or programs that implement the above steps in conjunction with a microprocessor or other data processor, the invention of this embodiment includes these and other different types of non-transitory computer-readable storage media. When programmed according to the methods and techniques of the present invention, the present invention also includes the computer itself.

[0081] The computer program can be applied to input data to perform the functions of the present embodiment, thereby converting the input data to generate output data stored in a 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 invention, the converted data represents a physical and tangible object, including a specific visual depiction of the physical and tangible object produced on the display.

[0082] The above are only preferred embodiments of the present invention. The present invention is not limited to the above embodiments. As long as the technical effects of the present invention are achieved by the same means, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention. Within the scope of protection of the present invention, its technical solutions and / or implementation methods may have various modifications and changes.

Claims

1. An antenna and filter integrated device based on a heterogeneous resonator, characterized in that: The antenna and filter integrated device based on heterogeneous resonator includes: a first dielectric substrate; A heterogeneous resonator; the heterogeneous resonator is arranged on the upper surface of the first dielectric substrate; A filter feeding structure; the filter feeding structure is arranged on the upper surface of the first dielectric substrate; a second dielectric substrate; an upper surface of the second dielectric substrate being opposite to a lower surface of the first dielectric substrate; A reflective floor; the reflective floor is arranged between the lower surface of the first dielectric substrate and the upper surface of the second dielectric substrate; Antenna feeding structure; the antenna feeding structure is arranged on the second dielectric substrate.

2. The antenna and filter integrated device based on heterogeneous resonator according to claim 1, characterized in that: The heterogeneous resonator includes a stepped dielectric block, a first metal sheet, and a second metal sheet; The first metal sheet is disposed on one stepped side surface of the stepped dielectric block, and the second metal sheet is disposed on the other stepped side surface of the stepped dielectric block.

3. The antenna and filter integrated device based on heterogeneous resonator according to claim 2, characterized in that: The stepped dielectric block comprises a platform portion, a first convex portion and a second convex 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 the other edge of the top surface of the platform portion; An extending direction of the first convex portion is parallel to an extending direction of the second convex portion.

4. The antenna and filter integrated device based on heterogeneous resonator according to claim 3, characterized in that: The ratio of the height of the platform portion to the height of the platform portion superimposed on the first protruding portion is a height ratio; The height ratio is greater than or equal to a first value and less than or equal to a second value.

5. The antenna and filter integrated device based on heterogeneous resonator according to claim 3, characterized in that: The filter feeding structure comprises a first microstrip structure and a second microstrip structure; The first microstrip structure is arranged on a side where the first metal sheet is located, and the second microstrip structure is arranged on a side where the second metal sheet is located; 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; The first microstrip structure and the second microstrip structure are centrally symmetric.

6. The antenna and filter integrated device based on heterogeneous resonators according to claim 5, characterized in that: The first microstrip structure and the second microstrip structure include a narrower portion and a wider portion, respectively; 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 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.

7. The antenna and filter integrated device based on heterogeneous resonators according to claim 5, characterized in that: An extension direction of the first convex portion and the second convex portion is perpendicular to an extension direction of the first microstrip structure and the second microstrip structure.

8. The antenna and filter integrated device based on heterogeneous resonator according to any one of claims 3 to 7, characterized in that: The antenna feeding structure includes the third microstrip structure and a rectangular slot; The third microstrip structure is arranged on the lower surface of the second dielectric substrate; The rectangular groove is located on the reflective floor.

9. The antenna and filter integrated device based on heterogeneous resonators according to claim 8, characterized in that: An extending direction of the third microstrip structure is perpendicular to an extending direction of the rectangular slot.

10. The antenna and filter integrated device based on heterogeneous resonators according to claim 8, characterized in that: The third microstrip structure includes a narrower portion and a wider portion; The narrower portion of the third microstrip structure starts from the edge of the second dielectric substrate and extends into the projection of the stepped dielectric block; The wider portion of the third microstrip structure starts from one end of the narrower portion of the third microstrip structure and extends from inside the projection of the stepped dielectric block to outside the projection of the stepped dielectric block.

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