Directional pattern control surface based on multi-mode resonance

Abstract

The present invention provides a directional pattern control surface based on multi-mode resonance, which relates to the technical field of microwave communication. The directional pattern control surface comprises: a plurality of patch control units arranged in an array; each patch control unit comprises a dielectric substrate, a metal patch, a metal floor and a plurality of identical short-circuit components; the metal patch is located on one side surface of the dielectric substrate; the metal floor is located on the other side surface of the dielectric substrate; each short-circuit component penetrates the dielectric substrate and is connected to the metal patch and the metal floor; the plurality of identical short-circuit components are divided into a first group of short-circuit components and a second group of short-circuit components; the first group of short-circuit components are located in the metal patch; the metal patch is ... 02 At the zero point of the mode electric field, the second set of short-circuit components is located in the metal patch TM 03 The present invention realizes independent pattern pointing control at two working frequencies while ensuring low cost and low profile.

Description

Technical Field

[0001] The present invention relates to the field of microwave communication technology, and in particular to a directional pattern control surface based on multi-mode resonance. Background Art

[0002] The pattern control surface provides new ideas for eliminating blind spots, increasing coverage, and improving communication quality by increasing the degree of freedom of optimization design in the middle of the communication link. The pattern control surface can intelligently adjust the incident wave from the base station to the required direction, and by reconstructing the channel, the quality of the received signal is greatly improved.

[0003] As the integration of communication hardware equipment becomes higher and higher, in order to save costs and space, the directional pattern control surface is usually required to have dual-frequency characteristics. Secondly, in order for the directional pattern control surface to have independent directional pattern control effects in two different frequency bands, the directional pattern control surface needs to not interfere with each other in the two frequency bands. Finally, from the perspective of market products, practical antennas should also have the characteristics of low profile, light weight and easy processing.

[0004] The traditional design is to achieve independent dual-frequency control by designing directional pattern control units on different substrates through two different resonant structures. However, this greatly increases the design and manufacturing costs, the units will also affect each other, and such a multi-layer design has a high profile and is not easy to install and manufacture. Summary of the invention

[0005] The present invention provides a directional pattern control surface based on multi-mode resonance, which is used to solve the defects of high cost, mutual influence between dual frequencies and high profile of the directional pattern control surface in the prior art, and realizes independent directional pattern pointing control at two working frequencies while ensuring low cost and low profile.

[0006] The present invention provides a directional pattern control surface based on multi-mode resonance, comprising:

[0007] A plurality of patch control units arranged in an array; each of the patch control units comprises a dielectric substrate, a metal patch, a metal floor and a plurality of identical short-circuit components;

[0008] The metal patch is located on one side surface of the dielectric substrate; the metal floor is located on the other side surface of the dielectric substrate; each of the short-circuit components penetrates the dielectric substrate and is connected to the metal patch and the metal floor;

[0009] The multiple identical short-circuit components are divided into a first group of short-circuit components and a second group of short-circuit components; the first group of short-circuit components are located in the metal patch TM 02 At the zero point of the mode electric field, the second group of short-circuit components is located in the metal patch TM03 The electric field zero point of the model.

[0010] In some embodiments, the difference in reflection phases of adjacent patch control units in each row along the x direction is equal to the phase difference The spacing between adjacent patch control units in each row along the x direction is equal to the distance The phase difference and the distance It is based on the direction of the maximum beam of the reflected wave after being regulated by the directional pattern control surface Sure.

[0011] In some embodiments, a narrow groove is provided on the metal patch; the first group of short-circuit components and the second group of short-circuit components are located on both sides of the narrow groove; the narrow groove is located in the metal patch. 03 The point where the current is strongest during mode resonance.

[0012] In some embodiments, the number of the narrow grooves is 2; the two narrow grooves are symmetrical about the vertical center line of the metal patch.

[0013] In some embodiments, the first group of short-circuit components and the second group of short-circuit components each include three short-circuit components;

[0014] One of the short-circuit components in the first group of short-circuit components is located on the vertical center line of the metal patch; the other two short-circuit components in the first group of short-circuit components are symmetrical about the vertical center line of the metal patch;

[0015] One of the short-circuit components in the second group of short-circuit components is located on the vertical center line of the metal patch; and the other two short-circuit components in the second group of short-circuit components are symmetrical about the vertical center line of the metal patch.

[0016] In some embodiments, taking the center of the metal patch as the coordinate origin, the coordinates of the three short-circuit components in the first group of short-circuit components from left to right are: , (0, 1.5), The coordinates of the three short-circuit components in the second group of short-circuit components from left to right are , (0, -4.0), ;

[0017] Among them, the represents the distance between the short-circuit components located on both sides of the first group of short-circuit components; It represents the distance between the short-circuit components located on both sides of the second group of short-circuit components.

[0018] In some embodiments, the metal patch is square in shape.

[0019] In some embodiments, the total length of the two narrow grooves is no greater than the side length of the metal patch.

[0020] In some embodiments, the side length of the metal patch is 1 to 2 medium wavelengths.

[0021] In some embodiments, the short-circuit component is a cylindrical metal or a via; the radius of the short-circuit component ranges from 0.1 to 0.2 mm.

[0022] The directional pattern control surface based on multi-mode resonance provided by the present invention is located in the metal patch through the first group of short-circuit components 02 At the zero point of the mode electric field, the second set of short-circuit components is located in the metal patch TM 03 At the zero point of the mode electric field, in different patch control units, the position of the short-circuit component in the metal patch is changed to independently change the electric field distribution of the patch control unit at different frequencies, realize different reflection phases of the patch control unit, and realize independent directional pattern pointing control at two operating frequencies while ensuring low cost and low profile. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the structure of the directional pattern control surface provided by the present invention;

[0025] Figure 2 is a side view of the patch control unit provided by the present invention;

[0026] Figure 3 is a top view of the patch control unit provided by the present invention;

[0027] Figure 4 The TM provided by the present invention 02 Schematic diagram of current flow in mode;

[0028] Figure 5 It is a relationship diagram between the reflection coefficient of the patch control unit and the spacing between the short-circuit components located on both sides of the second group of short-circuit components at a low frequency of 8.80 GHz provided by the present invention;

[0029] Figure 6It is a relationship diagram between the reflection coefficient of the patch control unit and the spacing between the short-circuit components located on both sides of the first group of short-circuit components at a high frequency of 17.06 GHz provided by the present invention;

[0030] Figure 7 The present invention provides a calculation, simulation and test result diagram of adjusting the vertical incident wave to a 40° direction at a low frequency of 8.80 GHz;

[0031] Figure 8 The present invention provides a calculation, simulation and test result diagram of adjusting the vertical incident wave to a 30° direction at a low frequency of 17.06 GHz.

[0032] Reference numerals:

[0033] 1: Directional pattern control surface; 2: Patch control unit; 3: Dielectric substrate; 4: Metal patch; 5: Metal floor; 6: Short-circuit component; 6A: First group of short-circuit components; 6B: Second group of short-circuit components; 7: Narrow slot. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other in the absence of conflict. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] Figure 1 is a schematic diagram of the structure of the directional pattern control surface 1 provided by the present invention, such as Figure 1 As shown, the pattern control surface 1 includes: a plurality of patch control units 2 arranged in an array.

[0036] Figure 2 is a side view of the patch control unit 2 provided by the present invention, such as Figure 2 As shown, the patch control unit 2 includes: a dielectric substrate 3, a metal patch 4, a metal floor 5 and a plurality of identical short-circuit components 6.

[0037] The metal patch 4 is located on one side surface of the dielectric substrate 3 ; the metal floor 5 is located on the other side surface of the dielectric substrate 3 ; each short-circuit component 6 penetrates the dielectric substrate 3 and is connected to the metal patch 4 and the metal floor 5 .

[0038] Optionally, the metal floor 5 includes a copper cladding layer.

[0039] Optionally, the short-circuit component 6 can be a cylindrical metal or a via. A plurality of identical short-circuit components 6, that is, each short-circuit component 6 has the same height and radius, and only has a different position on the metal patch 4. The height of each short-circuit component 6 is the same as the thickness of the dielectric substrate 3. The radius of each short-circuit component 6 needs to comprehensively consider the processing accuracy and the impact on the performance of the metal patch 4. Generally speaking, the larger the radius of the short-circuit component 6, the stronger the mutual interference between the two frequencies; the smaller the radius of the short-circuit component 6, the more susceptible it is to processing errors. Therefore, the radius of the short-circuit component 6 can range from 0.1 to 0.2 mm.

[0040] Figure 3 is a top view of the patch control unit 2 provided by the present invention, such as Figure 3 As shown, a plurality of identical short-circuit components 6 are divided into a first group of short-circuit components 6A and a second group of short-circuit components 6B.

[0041] The first group of short-circuit components 6A is located in the metal patch 4 TM 02 At the zero point of the mode electric field, the second group of short-circuit components 6B are located in the metal patch 4 TM 03 The electric field zero point of the model.

[0042] Specifically, each short-circuit component 6 in the first group of short-circuit components 6A is located in the metal patch 4. 02 At the zero point of the mode electric field, each short-circuit component 6 in the second group of short-circuit components 6B is located in the metal patch 4 TM 03 At the zero point of the mode electric field. The zero point of the electric field can be regarded as a line. In different patch control units 2, the first group of short-circuit components 6A and the second group of short-circuit components 6B are at different positions at the zero point of the electric field, that is, in different patch control units 2, the position of the short-circuit component 6 in the metal patch 4 is different. The specific position of the short-circuit component 6 is determined by the reflection phase required by the patch control unit 2.

[0043] When the first group of short-circuit components 6A is in the metal patch 4 TM 02 When the mode electric field zero point "moves", it will change the TM in the metal patch 4 03 mode resonant frequency and reflection phase without changing the TM in the metal patch 4 02 The resonant frequency and reflection phase of the mode. When the second group of short-circuit components 6B are in the metal patch 4 TM 03 When the mode electric field zero point "moves", it will change the TM in the metal patch 4 02 mode resonant frequency and reflection phase without changing the TM in the metal patch 4 03 The resonant frequency and reflection phase of the mode.

[0044] Optionally, the short-circuit components located on both sides of the first group of short-circuit components 6A and the second group of short-circuit components 6B are gradually adjusted to move outwards, so as to gradually increase the reflection phase of the patch control unit 2 .

[0045] The working principle of the directional pattern control surface 1 is introduced in detail below:

[0046] When the pattern control surface 1 is irradiated by a plane wave, each patch control unit 2 can receive electromagnetic waves. By adjusting the positions of the first group of short-circuit components 6A and the second group of short-circuit components 6B in the metal patch 4, each patch control unit 2 can have a different reflection phase. 02 Mode and TM 03 The electric field zero point of the mode, therefore, the reflection phase of the patch control unit 2 at the two frequencies can be controlled separately.

[0047] By regularly arranging and combining the patch control units 2 with different reflection phases, the direction of the radiation pattern can be controlled, thereby controlling the incident plane electromagnetic wave to a specified direction.

[0048] The multi-mode resonance-based directional pattern control surface 1 provided by the present invention is located in the metal patch 4 through the first group of short-circuit components 6A 02 At the zero point of the mode electric field, the second group of short-circuit components 6B are located in the metal patch 4 TM 03 At the zero point of the mode electric field, in different patch control units 2, the position of the short-circuit component 6 in the metal patch 4 is changed to independently change the electric field distribution of the patch control unit 2 at different frequencies, realize different reflection phases of the patch control unit 2, and realize independent directional pattern pointing control at two operating frequencies while ensuring low cost and low profile.

[0049] In some embodiments, the difference in reflection phase between adjacent patch control units 2 in each row along the x direction is equal to the phase difference ; The spacing between adjacent patch control units 2 in each row along the x direction is equal to the distance ; Phase difference and distance It is based on the direction of the maximum beam of the reflected wave after being regulated by the directional pattern control surface 1 Sure.

[0050] Specifically, the calculation formula for the array antenna beam pointing is as follows:

[0051]

[0052] In the formula, It indicates the direction of the maximum beam of the reflected wave after being regulated by the pattern regulating surface 1. represents the difference in reflection phase between adjacent patch control units 2 along the x direction; represents the spacing between adjacent patch control units 2 along the x direction; Represents the wave number of the design frequency in free space.

[0053] The arrangement of the patch control unit 2 can refer to the calculation formula of the array antenna beam pointing, that is, the patch control unit 2 in each row needs to follow: the difference in reflection phase of adjacent patch control units 2 along the x direction is equal to the phase difference , the spacing between adjacent patch control units 2 along the x direction is equal to the distance .

[0054] For example, if there are 10 patch control units 2 in each row, and the reflection phase difference between each adjacent patch control unit 2 is 90°, then the phase distribution of the 10 patch control units 2 in each row can be: 0°, 90°, 180°, 270°, 0°, 90°, 180°, 270°, 0° and 90° respectively.

[0055] In some embodiments, a narrow groove 7 is provided on the metal patch 4; the first group of short-circuit components 6A and the second group of short-circuit components 6B are located on both sides of the narrow groove 7; the narrow groove 7 is located in the metal patch 4 03 The point where the current is strongest during mode resonance.

[0056] Specifically, there is no metal in the narrow slot 7. The present invention does not limit the shape of the narrow slot 7, which may be a rectangle or other shapes. However, the width of the narrow slot 7 must be relatively narrow, so as to have less impact on the antenna surface TM. 03 The electric field distribution of the mode.

[0057] TM 03 mode voltage is 0, set narrow slot 7 to TM 03 mode has no effect; while TM 02 The voltage of the mode is not 0, set the narrow slot 7 to TM 02 The pattern has an impact.

[0058] Figure 4 The TM provided by the present invention 02 The current diagram in this mode is as follows: Figure 4 On the left, the original TM 02 In this mode, since the current J1 and the current J2 on the upper and lower sides are equal in magnitude and opposite in direction, they cancel each other out in the end-fire direction, making it impossible to receive the normally incident electromagnetic wave.

[0059] By placing the TM 03 When the mode resonates, a narrow slot 7 is set at the location where the current is strongest, such as Figure 4 As shown on the right, the current J2 passes through the narrow slot 7 and is divided into the current J2-1 and the current J2-2. The current J2-1 and the current J2-2 are equal in magnitude and opposite in direction. The current J2-1 and the current J2-2 cancel each other out. The directional pattern is mainly affected by the current J1, so that the directional pattern can be adjusted to the end-fire direction. In this way, the metal patch 4 is in the TM 02 mode can receive the normally incident electromagnetic wave. At the same time, since the narrow slot 7 is set in the TM 03 The current is strongest at the mode resonance, and the narrow slot 7 does not affect TM 03 Directivity pattern and electric field distribution of the mode.

[0060] In some embodiments, the number of the narrow grooves 7 is 2; the two narrow grooves 7 are symmetrical about the vertical center line of the metal patch 4 .

[0061] Specifically, the number of the narrow slots 7 may be 1, preferably 2. The two narrow slots 7 are completely identical, and the two narrow slots 7 are symmetrical about the vertical center line of the metal patch 4 to ensure the symmetry of the directional pattern as much as possible, thereby maintaining the angular stability of the outgoing wave.

[0062] In some embodiments, the first group of short-circuit components 6A and the second group of short-circuit components 6B each include three short-circuit components 6;

[0063] One short-circuit component 6 in the first group of short-circuit components 6A is located on the vertical center line of the metal patch 4; the other two short-circuit components 6 in the first group of short-circuit components 6A are symmetrical about the vertical center line of the metal patch 4;

[0064] One short-circuit component 6 in the second group of short-circuit components 6B is located on the vertical center line of the metal patch 4 ; the other two short-circuit components 6 in the second group of short-circuit components 6B are symmetrical about the vertical center line of the metal patch 4 .

[0065] Specifically, in the actual design process, by comparing four, six and eight short-circuit components 6, it is found that four short-circuit components 6 (the first group of short-circuit components 6A and the second group of short-circuit components 6B each include two short-circuit components 6) cannot provide sufficient reflection phase, and can only provide 200 degrees, which is difficult to meet the requirement of 280 degrees; eight short-circuit components 6 (the first group of short-circuit components 6A and the second group of short-circuit components 6B each include four short-circuit components 6) can provide sufficient reflection phase, but are sensitive to parameter changes. A slight change in the position of the short-circuit component 6 will cause a large change in the reflection phase. Therefore, after comprehensive consideration, six short-circuit components 6 are selected (the first group of short-circuit components 6A and the second group of short-circuit components 6B each include three short-circuit components 6).

[0066] One short-circuit component 6 in the first group of short-circuit components 6A is located on the vertical center line of the metal patch 4; the other two short-circuit components 6 in the first group of short-circuit components 6A are symmetrical about the vertical center line of the metal patch 4; one short-circuit component 6 in the second group of short-circuit components 6B is located on the vertical center line of the metal patch 4; the other two short-circuit components 6 in the second group of short-circuit components 6B are symmetrical about the vertical center line of the metal patch 4, thereby ensuring the symmetry of the directional pattern.

[0067] In some embodiments, the center of the metal patch 4 is taken as the coordinate origin, and the coordinates of the three short-circuit components 6 from left to right in the first group of short-circuit components 6A are: , (0, 1.5), The coordinates of the three short-circuit components 6 from left to right in the second group of short-circuit components 6B are , (0, -4.0), ;

[0068] in, represents the distance between the short-circuit components 6 located on both sides of the first group of short-circuit components 6A; denoted the distance between the short-circuit components 6 located on both sides in the second group of short-circuit components 6B.

[0069] Specifically, the coordinates of the electric field zero point are found through the characteristic mode, thereby determining the coordinates of the short-circuit components 6 in the first group of short-circuit components 6A and the second group of short-circuit components 6B. It can be seen from the above coordinates that the three short-circuit components 6 in the first group of short-circuit components 6A are not located on the same horizontal line, while the three short-circuit components 6 in the second group of short-circuit components 6B are located on the same horizontal line.

[0070] In some embodiments, the metal patch 4 is square in shape.

[0071] Specifically, the shape of the metal patch 4 may be a rectangle, but in order to facilitate design and reduce the degree of freedom, the shape of the metal patch 4 is set to be a square.

[0072] In some embodiments, the side length of the metal patch 4 is 1 to 2 medium wavelengths.

[0073] Specifically, the side length of the metal patch 4 is determined by the operating frequency, the thickness and dielectric constant of the dielectric substrate 3, and the position and number of the short-circuit components 6. The side length of the metal patch 4 is usually 1 to 2 dielectric wavelengths.

[0074] In some embodiments, the total length of the two narrow grooves 7 is no greater than the side length of the metal patch 4 .

[0075] Specifically, the total length of the two narrow grooves 7 is not greater than the side length of the metal patch 4, that is, the following relationship exists:

[0076]

[0077] In the formula, represents the length of the narrow slot 7, represents the width of the narrow groove 7, and P represents the side length of the metal patch 4.

[0078] The following is a specific example to further illustrate the multi-mode resonance-based directional pattern control surface 1 provided by the present invention.

[0079] The side length of the patch control unit 2 is 13mm; the dielectric substrate 3 uses Rogers 3003 with a thickness of 1.524mm, a relative dielectric constant of 6.15, and a loss tangent of 0.002; the metal floor 5 uses a copper clad layer with a thickness of 0.0018mm; the side length of the metal patch 4 is 10mm; the width of the narrow slot 7 is 0.1mm, the length is 4.5mm, and the number of narrow slots 7 is 2; the short-circuit component 6 uses a cylindrical metal with a height of 1.524mm and a radius of 0.15mm, and the number of short-circuit components 6 is 6; the coordinates of the three short-circuit components from left to right in the first group of short-circuit components 6A are as follows: , (0, 1.5), The coordinates of the three short-circuit components 6 from left to right in the second group of short-circuit components 6B are , (0, -4.0), ;in, represents the distance between the short-circuit components 6 located on both sides of the first group of short-circuit components 6A; denoted the distance between the short-circuit components 6 located on both sides in the second group of short-circuit components 6B.

[0080] Figure 5 The reflection coefficient of the patch control unit 2 and the spacing between the short-circuit components 6 on both sides of the second group of short-circuit components 6B provided by the present invention at a low frequency of 8.80 GHz are The relationship diagram, such as Figure 5 As shown, the horizontal axis is the second group of short-circuit components 6B located in the metal patch 4 TM 03 The spacing between the short-circuit components 6 on both sides of the mode electric field zero point is in mm; one vertical axis is amplitude in dB; and the other vertical axis is phase in degree.

[0081] Depend on Figure 5 It can be seen that at the low frequency of 8.80 GHz, the patch control unit 2 has almost no loss, and the reflection phase is only related to the position of the short-circuit component 6 in the second group of short-circuit components 6B, and has nothing to do with the position of the short-circuit component 6 in the second group of short-circuit components 6A. The reflection phase of the patch control unit 2 can be uniquely determined by the position of the short-circuit component 6 in the second group of short-circuit components 6B.

[0082] Figure 6The reflection coefficient of the patch control unit 2 and the spacing between the short-circuit components 6 located on both sides of the first group of short-circuit components 6A provided by the present invention at a high frequency of 17.06 GHz are The relationship diagram, such as Figure 6 As shown, the horizontal axis is the first group of short-circuit components 6A located in the metal patch 4 TM 03 The spacing between the short-circuit components 6 on both sides of the zero point of the mode electric field is in mm; one vertical axis is the amplitude, in dB; and the other vertical axis is the phase, in degrees.

[0083] Depend on Figure 6 It can be seen that at the high frequency of 17.06 GHz, the patch control unit 2 has almost no loss, and the reflection phase is only related to the position of the short-circuit component 6 in the second group of short-circuit components 6B, and has nothing to do with the position of the short-circuit component 6 in the second group of short-circuit components 6B. The reflection phase of the patch control unit 2 can be uniquely determined by the position of the short-circuit component 6 in the second group of short-circuit components 6B.

[0084] Figure 7 The present invention provides a calculation, simulation and test result diagram of adjusting the vertical incident wave to a 40° direction at a low frequency of 8.80 GHz. Figure 8 The calculation, simulation and test result diagram of the present invention for adjusting the vertical incident wave to a 30° direction at a low frequency of 17.06 GHz is shown in FIG. Figure 7-8 As shown, the horizontal axis is the angle, the unit is deg; the vertical axis is the gain, the unit is dB.

[0085] Depend on Figure 7-8 It can be seen that the actual processing test results are almost consistent with the calculation results and the simulation results, which shows that the implementation of the present invention can effectively control the incident plane electromagnetic wave to the designed direction.

[0086] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0087] It should be further noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0088] In the present invention, "at least one" means one or more, and "more" means two or more than two. The terms "first", "second", "third", "fourth", etc. (if any) in the present invention are used to distinguish similar objects, rather than to describe a specific order or sequence.

[0089] In the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A directional pattern control surface based on multi-mode resonance, It is characterized in that include: Multiple patch control units arranged in an array; Each of the patch control units includes a dielectric substrate, a metal patch, a metal floor and a plurality of identical short-circuit components; The metal patch is located on one side surface of the dielectric substrate; the metal floor is located on the other side surface of the dielectric substrate; each of the short-circuit components penetrates the dielectric substrate and is connected to the metal patch and the metal floor; The multiple identical short-circuit components are divided into a first group of short-circuit components and a second group of short-circuit components; the first group of short-circuit components are located in the metal patch TM 02 At the zero point of the mode electric field, the second group of short-circuit components is located in the metal patch TM 03 At the zero point of the mode electric field; in different patch control units, the first group of short-circuit components and the second group of short-circuit components are at different positions at the zero point of the electric field, so that different patch control units have different reflection phases.

2. The directional pattern control surface based on multi-mode resonance according to claim 1, It is characterized in that The difference in reflection phase between adjacent patch control units in each row along the x direction is equal to the phase difference ; The spacing between adjacent patch control units in each row along the x direction is equal to the distance The phase difference and the distance It is based on the direction of the maximum beam of the reflected wave after being regulated by the directional pattern control surface Sure.

3. The directional pattern control surface based on multi-mode resonance according to claim 1, It is characterized in that The metal patch is provided with a narrow groove; the first group of short-circuit components and the second group of short-circuit components are located on both sides of the narrow groove; the narrow groove is located in the metal patch 03 The point where the current is strongest during mode resonance.

4. The directional pattern control surface based on multi-mode resonance according to claim 3, It is characterized in that The number of the narrow grooves is 2; the two narrow grooves are symmetrical about the vertical center line of the metal patch.

5. The directional pattern control surface based on multi-mode resonance according to claim 3, It is characterized in that The first group of short-circuit components and the second group of short-circuit components each include three short-circuit components; One of the short-circuit components in the first group of short-circuit components is located on the vertical center line of the metal patch; the other two short-circuit components in the first group of short-circuit components are symmetrical about the vertical center line of the metal patch; One of the short-circuit components in the second group of short-circuit components is located on the vertical center line of the metal patch; and the other two short-circuit components in the second group of short-circuit components are symmetrical about the vertical center line of the metal patch.

6. The directional pattern control surface based on multi-mode resonance according to claim 5, It is characterized in that Taking the center of the metal patch as the coordinate origin, the coordinates of the three short-circuit components in the first group of short-circuit components from left to right are (-0.5 mm, 1.5mm+0.1 mm), (0mm, 1.5mm), (0.5 mm, 1.5mm+0.1 mm); the coordinates of the three short-circuit components in the second group of short-circuit components from left to right are (-0.5 mm, -4.0mm), (0mm, -4.0mm), (0.5 mm, -4.0mm); Among them, the represents the distance between the short-circuit components located on both sides of the first group of short-circuit components; It represents the distance between the short-circuit components located on both sides of the second group of short-circuit components.

7. The directional pattern control surface based on multi-mode resonance according to claim 4, It is characterized in that The shape of the metal patch is square.

8. The directional pattern control surface based on multi-mode resonance according to claim 7, It is characterized in that The total length of the two narrow grooves is no greater than the side length of the metal patch.

9. The directional pattern control surface based on multi-mode resonance according to claim 7, It is characterized in that The side length of the metal patch is 1 to 2 medium wavelengths.

10. The directional pattern control surface based on multi-mode resonance according to claim 1, It is characterized in that The short-circuit component is a cylindrical metal or a via; the radius of the short-circuit component ranges from 0.1 to 0.2 mm.

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