Millimeter wave antenna and terminal equipment

Abstract

The utility model provides a millimeter wave antenna and a terminal device. A first end of a first oscillator group is arranged as a signal input end and is connected with a signal input line through a high-resistance line, a plurality of first oscillators of the first oscillator group are arranged along a first direction, adjacent first oscillators are connected through a high-resistance line, and a first open slot for the high-resistance line to extend and connect is formed in each first oscillator. The first open slot, close to one side of the signal input line, of the first oscillator is an input gap, and the first open slot, away from one side of the signal input line, of the first oscillator is an output gap. According to the millimeter wave antenna disclosed by the invention, part of the high-resistance line is hidden in the first open slot under the condition that the high-resistance line does not influence the oscillator and the frequency of the millimeter wave antenna does not change, so that the overall length of the millimeter wave antenna is reduced; therefore, more first oscillators can be arranged on a limited circuit to improve the gain of the millimeter wave antenna.

Description

Technical Field

[0001] The utility model relates to the field of antenna design, in particular to a millimeter wave antenna and terminal equipment. Background Art

[0002] The antenna of the existing FMCW (Frequency Modulated Continuous Wave) millimeter wave radar usually uses a rectangular microstrip blade as the basic oscillator, and is connected to each other by a high-resistance line. The more microstrip blades there are, the higher the gain of the antenna. However, in the field of small devices, such as drones, due to the limitation of the circuit board area, only a few microstrip blades can be designed in a limited area while ensuring that the frequency of the millimeter wave antenna remains unchanged. Designing fewer microstrip blades will result in a decrease in the gain of the antenna. Therefore, there is an urgent need for an antenna that can be equipped with more microstrip blades in a limited area. Utility Model Content

[0003] In view of this, the embodiments of the present invention provide a millimeter wave antenna and a terminal device to solve the problem that the existing antenna can only be designed with fewer microstrip blades due to the limitation of circuit board area, resulting in reduced antenna gain.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] The first aspect of the utility model discloses a millimeter wave antenna, comprising: a first dipole group;

[0006] The first end of the first vibrator group is a signal input end, which is used to be connected to the signal input line through a high-resistance line;

[0007] The first vibrator group includes a plurality of first vibrators;

[0008] Multiple first vibrators are arranged along a first direction, and adjacent first vibrators are connected by a high-resistance line, wherein the first vibrator is provided with a first opening slot for the high-resistance line to extend into and connect, the first opening slot on the side of the first vibrator close to the signal input line is an input notch, and the first opening slot on the side of the first vibrator away from the signal input line is an output notch.

[0009] Preferably, the heights of the plurality of first vibrators gradually decrease from the middle to both ends.

[0010] Preferably, the plurality of first vibrators are arranged in an axisymmetric manner.

[0011] Preferably, it further comprises: a second vibrator group;

[0012] The first end of the second vibrator group is a signal input end, which is used to be connected to the signal input line through a high-resistance line;

[0013] The second vibrator group includes a plurality of second vibrators;

[0014] Multiple second vibrators are arranged along a second direction, and adjacent second vibrators are connected by a high-resistance line, wherein the second direction is opposite to the first direction, and the second vibrator is provided with a second open slot for high-resistance line connection, the second open slot on the side of the second vibrator close to the signal input line is an input gap, and the second open slot on the side of the second vibrator away from the signal input line is an output gap.

[0015] Preferably, the number of the first vibrators is the same as the number of the second vibrators.

[0016] Preferably, the plurality of first vibrators and the plurality of second vibrators are arranged axially symmetrically;

[0017] Along the first direction, the heights of the plurality of first vibrators gradually decrease;

[0018] Along the second direction, the heights of the plurality of second vibrators gradually decrease.

[0019] Preferably, the impedance of the high-resistance line is 72 ohms to 96 ohms.

[0020] Preferably, the width of the input gap is smaller than the width of the output gap.

[0021] Preferably, the gap gap of the input gap is 0.5 to 3 times the width of the high resistance line, wherein the gap gap is the distance from the high resistance line to one side of the input gap.

[0022] The second aspect of the utility model discloses a terminal device, comprising the millimeter wave antenna disclosed in the first aspect of the utility model.

[0023] Based on the millimeter wave antenna and terminal device provided by the utility model, the first end of the first vibrator group is set as the signal input end, and is connected to the signal input line through a high-resistance line, and the multiple first vibrators of the first vibrator group are set along the first direction, and the adjacent first vibrators are connected through a high-resistance line, and a first opening slot for the high-resistance line to extend and connect is opened in the first vibrator, and the first opening slot on the side of the first vibrator close to the signal input line is the input notch, and the first opening slot on the side of the first vibrator away from the signal input line is the output notch. Through the above-disclosed millimeter wave antenna, under the condition that the high-resistance line does not affect the vibrator and the frequency of the millimeter wave antenna is not changed, part of the high-resistance line is hidden in the first opening slot, so that the overall length of the millimeter wave antenna is reduced, and then more first vibrators can be set on a limited circuit to improve the gain of the millimeter wave antenna, or the overall length of the antenna can be made smaller while maintaining the same gain. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0025] Figure 1 A schematic diagram of a millimeter wave antenna structure provided by an embodiment of the utility model;

[0026] Figure 2 A gain curve comparison diagram of the millimeter wave antenna structure provided by the embodiment of the utility model relative to the existing millimeter wave antenna structure;

[0027] Figure 3 A schematic diagram of another millimeter wave antenna structure provided by an embodiment of the utility model;

[0028] Figure 4 A gain curve comparison diagram of another millimeter wave antenna structure provided by an embodiment of the utility model relative to the existing millimeter wave antenna structure;

[0029] Figure 5 A schematic diagram of the structure of the first vibrator or the second vibrator provided in an embodiment of the utility model.

[0030] Among them, there are a first vibrator 1, a second vibrator 2, a high-resistance line 3, and a signal input line 4. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] The present invention provides a millimeter wave antenna. Figure 1 to Figure 2 , Figure 1 It is a structural schematic diagram of a millimeter wave antenna, wherein the millimeter wave antenna comprises: a first vibrator group;

[0033] The first end of the first vibrator group is a signal input end, which is used to be connected to the signal input line 4 through the high-resistance line 3;

[0034] The first vibrator group includes a plurality of first vibrators 1;

[0035] Multiple first vibrators 1 are arranged along a first direction, and adjacent first vibrators 1 are connected by a high-resistance line 3, wherein the first vibrator 1 is provided with a first opening slot for the high-resistance line 3 to extend into and connect, the first opening slot on the side of the first vibrator 1 close to the signal input line 4 is an input notch, and the first opening slot on the side of the first vibrator 1 away from the signal input line 4 is an output notch.

[0036] It should be noted that, since the first vibrator 1 at the second end of the first vibrator group is a signal end, the first vibrator 1 at the second end of the first vibrator group has only one first opening slot as an input notch, and the remaining first vibrators 1 have first opening slots at both ends.

[0037] In the embodiment of the utility model, the first end of the first vibrator group is set as the signal input end, and is connected to the signal input line 4 through the high resistance line 3, and the multiple first vibrators 1 of the first vibrator group are set along the first direction, and the adjacent first vibrators 1 are connected through the high resistance line 3, and a first opening slot for the high resistance line 3 to extend and connect is opened in the first vibrator 1, and the first opening slot on the side of the first vibrator 1 close to the signal input line 4 is the input notch, and the first opening slot on the side of the first vibrator 1 away from the signal input line 4 is the output notch. Through the above-disclosed millimeter wave antenna, under the condition that the high resistance line 3 does not affect the vibrator and the frequency of the millimeter wave antenna is not changed, part of the high resistance line 3 is hidden in the first opening slot, so that the overall length of the millimeter wave antenna is reduced, and more first vibrators 1 can be set on a limited circuit to improve the gain of the millimeter wave antenna.

[0038] Preferably, the signal input line 4 is a 50 ohm signal input line.

[0039] Specifically, the heights of the plurality of first vibrators 1 gradually decrease from the middle to both ends.

[0040] Furthermore, the plurality of first vibrators 1 are arranged in an axisymmetric manner.

[0041] Further, refer to Figure 3 to Figure 4 , the millimeter wave antenna also includes: a second vibrator group;

[0042] The first end of the second vibrator group is a signal input end, which is used to be connected to the signal input line 4 through the high-resistance line 3;

[0043] The second vibrator group includes a plurality of second vibrators 2;

[0044] Multiple second vibrators 2 are arranged along the second direction, and adjacent second vibrators 2 are connected by a high-resistance line 3, wherein the second direction is opposite to the first direction, and the second vibrator 2 is provided with a second opening slot for connecting the high-resistance line 3, the second opening slot of the second vibrator 2 close to the signal input line 4 is an input notch, and the second opening slot of the second vibrator 2 away from the signal input line 4 is an output notch.

[0045] It should be noted that, by setting up a second vibrator group, and making the first end of the second vibrator group a signal input end, and connected to the signal input line 4 through a high-resistance line 3, and setting a plurality of second vibrators 2 of the second vibrator group along the second direction, adjacent second vibrators 2 are connected through the high-resistance line 3, and the second direction is opposite to the first direction, and the second vibrator 2 is provided with a second open slot for connecting the high-resistance line 3, the second open slot of the second vibrator 2 close to the signal input line 4 is an input notch, and the second open slot of the second vibrator 2 away from the signal input line 4 is an output notch.

[0046] It should also be noted that since the second vibrator 2 at the second end of the second vibrator group is the signal end, the second vibrator 2 at the second end of the second vibrator group only has one second opening slot as an input notch, and the remaining second vibrators 2 have second opening slots at both ends.

[0047] Specifically, the number of the first vibrators 1 is the same as the number of the second vibrators 2 .

[0048] Furthermore, the plurality of first vibrators 1 and the plurality of second vibrators 2 are arranged axially symmetrically;

[0049] Along the first direction, the heights of the plurality of first vibrators 1 gradually decrease;

[0050] Along the second direction, the heights of the plurality of second vibrators 2 gradually decrease.

[0051] It should be noted that by arranging the multiple first vibrators 1 and the multiple second vibrators 2 in an axially symmetrical manner, and gradually reducing the heights of the multiple first vibrators 1 along the first direction, and gradually reducing the heights of the multiple second vibrators 2 along the second direction, the energy direction radiated by the millimeter wave antenna can be made consistent with the axis of the millimeter wave antenna.

[0052] Specifically, when the present application uses a 5 mil thick RF plate, the impedance of the high resistance line 3 is between 72 ohms and 96 ohms. When the width of the high resistance line 3 is 0.12 mm, the corresponding impedance is about 80 ohms. If the width of the high resistance line 3 is 0.075 mm, the corresponding impedance is about 96 ohms. If the width of the high resistance line 3 is 0.15 mm, the corresponding impedance is about 72 ohms.

[0053] Preferably, the width of the high resistance line 3 is 0.075 mm to 0.15 mm.

[0054] It should be noted that the width of the high-resistance line 3 may be 0.075 mm, 0.15 mm, or 0.11 mm between 0.075 mm and 0.15 mm, and those skilled in the art may make the selection according to the requirements.

[0055] Specifically, enter the width of the gap (such as Figure 5a) shown in the figure is smaller than the width of its output gap (such as Figure 5 b) shown in FIG.

[0056] It should be noted that the structures of the first oscillator 1 and the second oscillator 2 of the present application are the same. When the first oscillator 1 and the second oscillator 2 both have an input notch and an output notch, the width of the input notch is set to be smaller than the width of the output notch. This can improve the radiation efficiency of the self and the suppression ratio of the side lobes.

[0057] Specifically, the gap gap of the input gap is 0.5 to 3 times the width of the high resistance line 3, wherein the gap gap is the distance from the high resistance line 3 to one side of the input gap (refer to Figure 5 The notch gap d) is shown in FIG.

[0058] It should be noted that in order to avoid the high-resistance line 3 affecting the first vibrator 1 and the second vibrator 2, when the high-resistance line 3 extends into the first open slot set in the first vibrator 1 for connection, the distance between the high-resistance line 3 and the two sides of the first open slot is set to be the same, and when the high-resistance line 3 extends into the second open slot set in the second vibrator 2 for connection, the distance between the high-resistance line 3 and the two sides of the second open slot is set to be the same, and the gap gap of the input gap is set to 0.5 to 3 times the width of the high-resistance line 3, which not only facilitates the connection of the high-resistance line 3, but also effectively avoids the high-resistance line 3 from affecting the first vibrator 1 and the second vibrator 2.

[0059] Based on the millimeter wave antenna provided in the above embodiment, this embodiment further provides a terminal device, the terminal device includes the millimeter wave antenna;

[0060] The millimeter wave antenna includes: a first vibrator group;

[0061] The first end of the first vibrator group is a signal input end, which is used to be connected to the signal input line 4 through the high-resistance line 3;

[0062] The first vibrator group includes a plurality of first vibrators 1;

[0063] Multiple first vibrators 1 are arranged along a first direction, and adjacent first vibrators 1 are connected by a high-resistance line 3, wherein the first vibrator 1 is provided with a first opening slot for the high-resistance line 3 to extend into and connect, the first opening slot on the side of the first vibrator 1 close to the signal input line 4 is an input notch, and the first opening slot on the side of the first vibrator 1 away from the signal input line 4 is an output notch.

[0064] In the embodiment of the utility model, the first end of the first vibrator group is set as the signal input end, and is connected to the signal input line 4 through the high resistance line 3, and the multiple first vibrators 1 of the first vibrator group are set along the first direction, and the adjacent first vibrators 1 are connected through the high resistance line 3, and a first opening slot for the high resistance line 3 to extend and connect is opened in the first vibrator 1, and the first opening slot on the side of the first vibrator 1 close to the signal input line 4 is the input notch, and the first opening slot on the side of the first vibrator 1 away from the signal input line 4 is the output notch. Through the above-disclosed millimeter wave antenna, under the condition that the high resistance line does not affect the vibrator and the frequency of the millimeter wave antenna is not changed, part of the high resistance line 3 is hidden in the first opening slot and the second opening slot, so that the length of the entire millimeter wave antenna is reduced, and more first vibrators can be set on a limited circuit to improve the gain of the millimeter wave antenna.

[0065] Figure 2 The gain curves of the millimeter wave antenna of the present application are compared with those of the traditional millimeter wave antenna, wherein the solid line is the gain curve of the millimeter wave antenna of the present application, and the dotted line is the gain curve of the traditional millimeter wave antenna.

[0066] Figure 4 This is a comparison of gain curves of another millimeter wave antenna of the present application and a traditional millimeter wave antenna, wherein the solid line is the gain curve of the millimeter wave antenna of the present application, and the dotted line is the gain curve of the traditional millimeter wave antenna.

[0067] The operating frequency range of the millimeter wave antenna of the present application is 20 GHz to 90 GHz.

[0068] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A millimeter wave antenna, characterized in that: include: The first vibrator group; The first end of the first vibrator group is a signal input end, which is used to be connected to the signal input line through a high-resistance line; The first vibrator group includes a plurality of first vibrators; Multiple first vibrators are arranged along a first direction, and adjacent first vibrators are connected by a high-resistance line, wherein the first vibrator is provided with a first opening slot for the high-resistance line to extend into and connect, the first opening slot of the first vibrator close to the signal input line is an input notch, and the first opening slot of the first vibrator away from the signal input line is an output notch.

2. The millimeter wave antenna according to claim 1, characterized in that: The heights of the first vibrators gradually decrease from the middle to both ends.

3. The millimeter wave antenna according to claim 2, characterized in that: The plurality of first vibrators are arranged in an axisymmetric manner.

4. The millimeter wave antenna according to claim 1, characterized in that: Also includes: The second oscillator group; The first end of the second vibrator group is a signal input end, which is used to be connected to the signal input line through a high-resistance line; The second vibrator group includes a plurality of second vibrators; A plurality of second vibrators are arranged along a second direction, and adjacent second vibrators are connected by a high-resistance line, wherein the second direction is opposite to the first direction, and the second vibrators are provided with a second opening slot for high-resistance line connection, the second opening slot of the second vibrator close to the signal input line is an input notch, and the second opening slot of the second vibrator away from the signal input line is an output notch.

5. The millimeter wave antenna according to claim 4, characterized in that: The number of the first vibrators is the same as the number of the second vibrators.

6. The millimeter wave antenna according to claim 5, characterized in that: The plurality of first vibrators and the plurality of second vibrators are arranged axially symmetrically; Along the first direction, the heights of the plurality of first vibrators gradually decrease; Along the second direction, the heights of the plurality of second vibrators gradually decrease.

7. The millimeter wave antenna according to any one of claims 1 to 6, characterized in that: The impedance of the high-resistance line is 72 ohms to 96 ohms.

8. The millimeter wave antenna according to claim 7, characterized in that: The width of the input gap is smaller than the width of the output gap.

9. The millimeter wave antenna according to claim 7, characterized in that: The gap gap of the input gap is 0.5 to 3 times the width of the high resistance line, wherein the gap gap is the distance from the high resistance line to one side of the input gap.

10. A terminal device, characterized in that: It comprises the millimeter wave antenna as claimed in any one of claims 1 to 9.

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