Commanding machine antenna

Abstract

The utility model provides a director antenna. The director antenna comprises a housing, a first antenna unit, a second antenna unit and a balun assembly. A containing space is formed in the shell, and the first antenna unit, the second antenna unit and the balun assembly are all located in the containing space. One end, far away from the first antenna unit, of the second antenna unit is provided with at least one group of folded oscillators, and the balun assembly is electrically connected with the folded oscillators; the folded dipole is bent towards the balun assembly and forms an included angle with the balun assembly. According to the antenna, the folded dipole is arranged on the second antenna unit, and the Balun assembly is electrically connected with the folded dipole, so that impedance matching of the antenna is optimized, the working bandwidth of the antenna is effectively widened, and the antenna can better adapt to multi-band communication requirements. The folded dipole is bent towards the balun assembly and forms an included angle with the balun assembly, so that the radiation pattern of the antenna is improved, the directivity and low-elevation gain of the antenna are enhanced, and farther-distance and more stable signal transmission can be realized.

Description

Technical Field

[0001] This utility model relates to the field of antenna device technology, specifically to a command and control antenna. Background Technology

[0002] In today's rapidly developing wireless communication technology, the command and control antenna, as a key component of the communication system, directly impacts communication quality and efficiency. In the field of wireless communication, especially in scenarios such as satellite communication and shortwave communication, low-elevation communication is a crucial application. Taking satellite communication as an example, when a command and control aircraft needs to establish a stable communication link with a low-Earth orbit satellite, due to the relatively low orbital position of the satellite, the antenna needs to have good signal reception and transmission capabilities in the low-elevation direction (usually referring to the direction where the angle between the antenna and the horizontal plane is small).

[0003] However, traditional command antennas suffer from insufficient gain at low elevation angles, making it difficult to meet the ever-increasing communication demands. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a command and control antenna, the specific solution of which is as follows:

[0005] A command and control antenna includes: a housing, a first antenna element, a second antenna element, and a balun assembly; the housing has an internal accommodating space, and the first antenna element, the second antenna element, and the balun assembly are all located within the accommodating space;

[0006] The second antenna unit has at least one set of folded elements at one end away from the first antenna unit, and the balun assembly is electrically connected to the folded elements; the folded elements are bent toward the balun assembly and form an angle with the balun assembly.

[0007] In an optional embodiment, the balun assembly includes an inner conductor and an outer conductor, the inner conductor being wholly or partially located inside the outer conductor; the inner conductor and the outer conductor are electrically connected to different folded oscillators to achieve circular polarization.

[0008] In an optional embodiment, the second antenna element is provided with two sets of folded elements, and the two sets of folded elements are arranged alternately.

[0009] Each group of folded elements includes a long arm and a short arm. By adjusting the arrangement order of the long arm and the short arm in the corresponding group of folded elements, the second antenna element can achieve left-hand circular polarization or right-hand circular polarization radiation.

[0010] In one optional embodiment, the ratio of the length of the long arm to the length of the short arm is in the range of 1-1.5.

[0011] In an optional embodiment, the included angle ranges from 15 degrees to 85 degrees.

[0012] In an optional embodiment, the first antenna unit includes at least two antenna sections, with different antenna sections corresponding to different operating frequencies, and the operating frequency of each antenna section gradually increases along the direction from the first antenna unit to the second antenna unit.

[0013] In an optional embodiment, the command antenna further includes a mounting portion located within the receiving space, with one side of the mounting portion connected to the first antenna unit and the other side of the mounting portion connected to the housing.

[0014] The straight line formed by the extension direction of the sidewall of the mounting part forms an inclined angle with the plane where the bottom of the housing is located, and the inclined angle ranges from 120 degrees to 160 degrees.

[0015] In an optional embodiment, the housing includes a cover and a base, the cover and the base being detachably connected, the cover and the base enclosing the receiving space.

[0016] In an optional embodiment, the base is provided with at least one protrusion.

[0017] In an optional embodiment, the housing is provided with at least one external interface for connecting an external device.

[0018] Beneficial effects: This application optimizes the impedance matching of the antenna by setting at least one set of folded dipoles at the end of the second antenna element away from the first antenna element and electrically connecting the folded dipoles using a balun assembly. This effectively widens the antenna's operating bandwidth, enabling it to better adapt to multi-band communication requirements and improving communication flexibility and reliability. Furthermore, by bending the folded dipoles towards the balun assembly and forming an angle with it, the radiation pattern of the antenna is improved, enhancing its directivity and low-elevation gain, enabling longer-distance and more stable signal transmission in specific directions. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is an exploded three-dimensional view of the present invention.

[0021] Figure 2 for Figure 4 A schematic diagram of the AA cross-sectional structure of the middle shell;

[0022] Figure 3 This is a top view of the internal structure of this utility model;

[0023] Figure 4 This is a top view of the three-dimensional structure of this utility model;

[0024] Figure 5 This is a three-dimensional structural diagram of the present invention.

[0025] The reference numerals in the attached figures are as follows: 1-Housing; 10-Accommodation space; 11-Shell; 12-Base; 13-External interface; 2-First antenna unit; 20-Antenna section; 3-Second antenna unit; 30-Folded vibrator; 300-Long arm; 301-Short arm; 4-Balon assembly; 40-Inner conductor; 41-Outer conductor; 5-Mounting part; a-Included angle; b-Tilting angle. Detailed Implementation

[0026] The following will describe the concept, specific structure and technical effects of this utility model clearly and completely with reference to the embodiments and accompanying drawings, so as to fully understand the purpose, features and effects of this utility model.

[0027] Various embodiments of the present invention will be described more fully below. The present invention may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of the present invention to the specific embodiments disclosed herein, but rather the present invention should be understood to cover all adjustments, equivalents, and / or alternatives falling within the spirit and scope of the various embodiments of the present invention.

[0028] In the following, the terms “comprising” or “may include”, which may be used in various embodiments of the present invention, indicate the presence of the disclosed functions, operations, or elements, and do not limit the addition of one or more functions, operations, or elements. Furthermore, as used in various embodiments of the present invention, the terms “comprising,” “having,” and their cognates are intended only to indicate a specific feature, number, step, operation, element, component, or combination of the foregoing, and should not be construed as primarily excluding the presence of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing, or the possibility of adding one or more combinations of features, numbers, steps, operations, elements, components, or combinations of the foregoing.

[0029] In various embodiments of this utility model, the expression "or" or "at least one of A and / or B" includes any combination or all combinations of the words listed simultaneously. For example, the expression "A or B" or "at least one of A and / or B" may include A, may include B, or may include both A and B.

[0030] The terms used in the various embodiments of this utility model (such as "first," "second," etc.) may modify various constituent elements in the various embodiments, but do not limit the corresponding constituent elements. For example, the above terms do not limit the order and / or importance of the elements. The above terms are only used for the purpose of distinguishing one element from other elements. For example, a first user device and a second user device refer to different user devices, although both are user devices. For example, without departing from the scope of the various embodiments of this utility model, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0031] It should be noted that, in this utility model, unless otherwise explicitly specified and defined, terms such as "installation," "connection," and "fixation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] In this utility model, those skilled in the art should understand that the terms indicating orientation or positional relationship in the text are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] The terminology used in the various embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the various embodiments of this invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of this invention pertain. The terms (such as those defined in a generally used dictionary) are to be interpreted as having the same meaning as in the context of the relevant technical field and are not to be interpreted as having an idealized or overly formal meaning, unless clearly defined in the various embodiments of this invention.

[0034] Example 1

[0035] This embodiment optimizes the antenna's impedance matching by placing at least one set of folded elements at the end of the second antenna element furthest from the first antenna element and electrically connecting the folded elements using a balun assembly. This effectively broadens the antenna's operating bandwidth, enabling it to better adapt to multi-band communication requirements and improving communication flexibility and reliability. Furthermore, by bending the folded elements towards the balun assembly at an angle, the antenna's radiation pattern is improved, enhancing its directivity and low-elevation gain, allowing for longer-distance and more stable signal transmission in specific directions. The specific scheme is as follows:

[0036] As per the instruction manual Figure 1 To the instruction manual Figure 3 As shown, this embodiment provides a command antenna, including: a housing 1, a first antenna unit 2, a second antenna unit 3, and a balun assembly 4; the housing 1 has an internal accommodating space 10, and the first antenna unit 2, the second antenna unit 3, and the balun assembly 4 are all located within the accommodating space 10;

[0037] The second antenna unit 3 has at least one set of folded vibrators 30 at one end away from the first antenna unit 2, and the balun assembly 4 is electrically connected to the folded vibrators 30; the folded vibrators 30 are bent toward the balun assembly 4 and form an angle α with the balun assembly 4.

[0038] Specifically, the housing 1, as the external protective structure of the antenna, is typically made of metal and is used to protect the internal antenna elements and balun assembly from the influence of the external environment, while also providing electromagnetic shielding to reduce signal interference. Inside the housing 1, a sealed and electromagnetically shielded receiving space 10 is formed. The first antenna element 2, the second antenna element 3, and the balun assembly 4 are all housed within this receiving space 10 to ensure the stability of signal transmission between components and the compactness of the overall structure.

[0039] The first antenna element 2 is a basic component of the antenna, responsible for transmitting and receiving high-frequency electromagnetic wave signals to achieve wireless communication functions. (See attached instruction manual.) Figure 2 As shown, in an optional embodiment, the first antenna element 2 is a multi-layer antenna structure, with each layer representing a different frequency. The multi-layer antenna structure achieves spatial multiplexing by vertically stacking antenna elements of different frequency bands. Each antenna layer operates independently in a specific frequency band, and coupling interference is avoided between layers through dielectric isolation or electromagnetic shielding techniques.

[0040] In some embodiments, the operating frequencies of each antenna layer gradually increase from low to high, but discontinuous distribution between frequency bands is allowed (such as 4G low-frequency band, 5G mid-frequency band, Wi-Fi 6E high-frequency band, etc.) to adapt to actual communication spectrum planning requirements. The specific number of layers in the multi-layer antenna structure of the first antenna element 2 is related to the specific number of receiving frequency bands. When electromagnetic waves of different frequency bands propagate in space, if the frequency bands are too close, mutual coupling interference is likely to occur, leading to signal distortion or decreased receiving sensitivity. Therefore, each frequency band needs to be independently allocated to one antenna layer, and the inter-layer isolation is ensured through physical isolation (such as dielectric layers, shielding structures) and electromagnetic simulation optimization. The layered design of the first antenna element can achieve efficient frequency band coverage in a limited space, effectively improving the overall gain and radiation efficiency.

[0041] Furthermore, in an optional embodiment, a scheme is adopted in which the first antenna element 2 and the second antenna element 3 work together, wherein the second antenna element 3 mainly undertakes the functions of circular polarization radiation and low elevation angle gain optimization. Specifically, see the appendix to the specification. Figure 3 As shown, the second antenna element 3 consists of two sets of orthogonally distributed folded dipoles 30, forming a spatial three-dimensional structure (e.g., a cross-shaped spatial structure), balancing structural compactness and radiation characteristics. Furthermore, each set of folded dipoles includes two conductor arms, one long and one short, and the current path is changed by adjusting the order of the arm lengths. With the long arm in front and the short arm behind, a counter-clockwise current loop is formed, achieving left-hand circular polarization; with the short arm in front and the long arm behind, a clockwise current loop is formed, achieving right-hand circular polarization. The circular polarization radiation of the second antenna element 3 effectively reduces signal attenuation caused by multipath effects and polarization mismatch, while low elevation angle gain optimization enhances the detection and communication capabilities against low-altitude targets.

[0042] The balun assembly 4, as a signal balancing device, is used to convert unbalanced signals into balanced signals, or vice versa, to ensure signal stability and efficiency during transmission. (See attached instruction manual.) Figure 1 As shown, in an optional embodiment, the balun assembly 4 includes an inner conductor 40 and an outer conductor 41, and employs a slot coupling design to form a phase difference through independent feeding of the inner and outer conductors. Specifically, the outer conductor 41 excites one set of folded dipoles, and the inner conductor excites the other set of folded dipoles, achieving phase difference feeding. This allows the folded dipoles 30 to better perform their functions such as circular polarization radiation and low elevation angle gain optimization, improving the overall performance of the entire antenna system. It also effectively controls the antenna's radiation pattern and polarization characteristics, improving the antenna's radiation efficiency and directivity, enabling the signal to be radiated more concentratedly to the target area, and enhancing communication coverage and signal strength.

[0043] Furthermore, in some embodiments, as described in the appendix to the specification... Figure 2As shown, the folded element 30 bends downwards (i.e., towards the balun assembly 4), forming an angle α with the balun assembly 4 (typically between 15° and 85°, the specific angle is adjusted according to antenna design requirements, preferably between 30° and 45°). This helps improve low elevation gain, achieve more stable circular polarization performance, reduce polarization mismatch, enhance the antenna's anti-interference capability in complex electromagnetic environments, and ensure communication quality.

[0044] Traditional horizontally placed folded dipoles typically have their maximum radiation direction located in a plane perpendicular to the dipole axis (i.e., the high elevation angle region), while the radiation energy at low elevation angles (closer to the ground) is weaker. When the dipole's end bends downwards, it's equivalent to introducing an asymmetric structure in the vertical plane. This causes the radiation field generated by the bent section to superimpose with the main dipole field, concentrating more energy in the low elevation angle direction. When the bent structure is close to the ground, the phase superposition of the ground-reflected wave and the direct wave is more conducive to enhancing the low elevation angle signal. Simultaneously, after bending, the current distribution on the dipole changes, with an increase in the vertical component of the current in the bent section, forming an additional vertically polarized radiation component. Vertically polarized waves experience less propagation loss in the low elevation angle region (especially in shortwave / ultra-shortwave communication) and are more likely to bypass obstacles compared to horizontally polarized waves.

[0045] In an optional embodiment, the balun assembly 4 includes an inner conductor 40 and an outer conductor 41, with the inner conductor 40 located entirely or partially inside the outer conductor 41; the inner conductor 40 and the outer conductor 41 are electrically connected to different folded oscillators 30 to achieve circular polarization.

[0046] As per the instruction manual Figure 1 As shown, in an optional embodiment, the balun assembly 4 includes an inner conductor 40 and an outer conductor 41, and employs a slot coupling design to form a phase difference through independent feeding of the inner and outer conductors. Specifically, the outer conductor 41 excites one set of folded dipoles, and the inner conductor excites another set of folded dipoles, achieving phase difference feeding. By connecting different folded dipoles through the inner and outer conductors respectively, and utilizing their structural differences and current distribution characteristics, a stable phase difference can be generated, thereby achieving circular polarization radiation, enhancing the antenna's radiation intensity and anti-interference capability in a specific direction, and meeting the requirements of circular polarization communication.

[0047] In an optional embodiment, the second antenna unit 3 is provided with two sets of folded vibrators 30, and the two sets of folded vibrators 30 are arranged in a cross manner;

[0048] Each group of folded dipoles 30 includes a long arm 300 and a short arm 301. By adjusting the arrangement order of the long arm 300 and the short arm 301 in the corresponding group of folded dipoles 30, the left-hand circular polarization or right-hand circular polarization radiation of the second antenna element 3 can be achieved.

[0049] Specifically, see the instruction manual. Figure 3 As shown, the second antenna unit 3 is composed of two sets of orthogonally distributed folded oscillators 30, forming a spatial three-dimensional structure (such as a cross-shaped spatial structure), which takes into account both structural compactness and radiation characteristics.

[0050] Furthermore, each group of folded dipoles 30 includes a long arm 300 and a short arm 301. By adjusting the arrangement order of the long arms 300 and the short arms 301 in the corresponding group of folded dipoles 30, that is, changing the relative positional relationship of the long arms 300 and the short arms 301 in space, the distribution and flow path of the current on the folded dipoles 30 can be changed, thereby realizing the left-hand circular polarization or right-hand circular polarization radiation of the second antenna element 3. With the long arm in front and the short arm behind, a counterclockwise current loop is formed, which can realize left-hand circular polarization; with the short arm in front and the long arm behind, a clockwise current loop is formed, which can realize right-hand circular polarization. This flexibility allows the command antenna to adapt to different communication systems and application scenarios, meet diverse communication needs, and improve the reliability and stability of communication.

[0051] In an optional embodiment, the ratio of the length of the long arm 300 to the length of the short arm 301 is in the range of 1-1.5.

[0052] In some embodiments, the long arm 300 is longer than the short arm 301 by a range of one-sixth to one-quarter of a wavelength, which enables the folded dipole 30 to generate a more reasonable current distribution when radiating electromagnetic waves, improving the antenna's radiation efficiency and directivity, and reducing signal attenuation and interference. It also helps to achieve stable circular polarization characteristics, effectively reducing signal attenuation caused by multipath effects and polarization mismatch.

[0053] In one optional embodiment, the included angle α ranges from 15 degrees to 85 degrees. (The specific angle is adjusted according to the antenna design requirements, preferably between 30° and 45°), which helps to improve low elevation gain, achieve more stable circular polarization performance, reduce polarization mismatch, enhance the antenna's anti-interference capability in complex electromagnetic environments, and ensure communication quality.

[0054] In an optional embodiment, the first antenna unit 2 includes at least two layers of antenna sections 20, with different layers of antenna sections 20 corresponding to different operating frequencies, and the operating frequency of each layer of antenna section 20 gradually increases along the direction from the first antenna unit 2 to the second antenna unit 3.

[0055] As per the instruction manual Figure 2 As shown, in an optional embodiment, the first antenna element 2 is a multi-layer antenna structure, with each layer representing a different frequency. The multi-layer antenna structure achieves spatial multiplexing by vertically stacking antenna elements of different frequency bands. Each antenna layer operates independently in a specific frequency band, and coupling interference is avoided between layers through dielectric isolation or electromagnetic shielding techniques.

[0056] In some embodiments, the operating frequencies of each antenna layer gradually increase from low to high, but discontinuous distribution between frequency bands is allowed (such as 4G low-frequency band, 5G mid-frequency band, Wi-Fi 6E high-frequency band, etc.) to adapt to actual communication spectrum planning requirements. The layered design of the first antenna element can achieve efficient frequency band coverage in a limited space, effectively improving overall gain and radiation efficiency.

[0057] In an optional embodiment, as shown in the appendix to the specification... Figure 1 Included with instruction manual Figure 2 As shown, the command antenna also includes a mounting part 5, which is located within the accommodating space 10. One side of the mounting part 5 is connected to the first antenna unit 2, and the other side of the mounting part 5 is connected to the housing 1.

[0058] The straight line formed by the extension direction of the side wall of the mounting part 5 forms an inclination angle b with the plane where the bottom of the housing 1 is located, and the inclination angle b ranges from 120 degrees to 160 degrees.

[0059] Specifically, the mounting part 5 is shaped like a conical metal structure. The conical structure possesses unique electromagnetic properties, effectively reflecting, refracting, and focusing electromagnetic waves. By adjusting the height and diameter of this conical metal structure, antennas of different sizes can be flexibly matched to adapt to various complex application scenarios. In terms of parameter determination, calculations are primarily based on the required frequency wavelength of the antenna. Generally, when the parameters of the conical metal structure are close to 1 / 4 wavelength, optimal performance is achieved, and the propagation and reflection characteristics of electromagnetic waves within the conical structure are optimally matched, thereby realizing efficient signal transmission and reception.

[0060] Furthermore, by adjusting the shape and tilt angle b of the mounting part 5, the antenna's radiation pattern can be stretched towards the ground (low elevation angle region), significantly improving the antenna's gain in the low elevation angle direction. In applications such as BeiDou short message communication, which have high requirements for low elevation angle performance, this feature can greatly enhance the antenna's ability to receive satellite signals, improve the success rate and stability of communication, and ensure reliable communication even in complex terrain or low elevation angle environments.

[0061] In an optional embodiment, the housing 1 includes a cover 11 and a base 12, the cover 11 and the base 12 being detachably connected, and the cover 11 and the base 12 enclosing the receiving space 10. In an optional embodiment, the base 12 is provided with at least one protrusion.

[0062] In some embodiments, as per the appendix to the specification Figure 1 Included with instruction manual Figure 3As shown, the housing 1 includes a cover 11 and a base 12, which together form the receiving space 10. The first antenna unit 2, the second antenna unit 3, and the balun assembly 4 are all disposed within this receiving space 10 to ensure the stability of signal transmission between the components and the compactness of the overall structure.

[0063] Furthermore, at least one protrusion is provided on the base 12 to enhance the overall stability of the command antenna structure. Optionally, there can be two, three, or more protrusions, with multiple protrusions evenly spaced on the base 12. In an optional embodiment, the housing 11 and the base 12 can be connected by a sealing structure, which can be a sealing ring. The sealing structure can achieve sealing between the inside of the housing 1 and the outside, and also provide a certain vibration reduction effect.

[0064] In other embodiments, the housing 11 and the base 12 can be connected by a snap-fit ​​structure, which can be a cantilever beam snap-fit, a ring snap-fit, or a torsion snap-fit.

[0065] In an optional embodiment, as shown in the appendix to the specification... Figure 5 As shown, the housing 1 is provided with at least one external interface 13 for connecting external devices. The external interface 13 provides various possibilities for connecting the command antenna to external devices.

[0066] This application optimizes the antenna's impedance matching by placing at least one set of folded elements at the end of the second antenna element away from the first antenna element and electrically connecting the folded elements using a balun assembly. This effectively widens the antenna's operating bandwidth, enabling it to better adapt to multi-band communication requirements and improving communication flexibility and reliability. Furthermore, by bending the folded elements towards the balun assembly at an angle, the radiation pattern of the antenna is improved, enhancing its directivity and low-elevation gain, enabling longer-distance and more stable signal transmission in specific directions.

[0067] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A command antenna, characterized in that, include: The enclosure comprises a housing, a first antenna unit, a second antenna unit, and a balun assembly; the housing has an internal receiving space, within which the first antenna unit, the second antenna unit, and the balun assembly are all located; The second antenna unit has at least one set of folded elements at one end away from the first antenna unit, and the balun assembly is electrically connected to the folded elements; the folded elements are bent toward the balun assembly and form an angle with the balun assembly.

2. The command antenna according to claim 1, characterized in that, The balun assembly includes an inner conductor and an outer conductor, with the inner conductor located entirely or partially inside the outer conductor; the inner conductor and the outer conductor are electrically connected to different folded oscillators to achieve circular polarization.

3. A command antenna according to claim 1, characterized in that, The second antenna unit is provided with two sets of folded elements, and the two sets of folded elements are arranged in a cross manner; Each group of folded elements includes a long arm and a short arm. By adjusting the arrangement order of the long arm and the short arm in the corresponding group of folded elements, the second antenna element can achieve left-hand circular polarization or right-hand circular polarization radiation.

4. A command antenna according to claim 3, characterized in that, The ratio of the length of the long arm to the length of the short arm is in the range of 1-1.

5.

5. A command antenna according to any one of claims 1-4, characterized in that, The included angle ranges from 15 degrees to 85 degrees.

6. A command antenna according to claim 1, characterized in that, The first antenna element includes at least two antenna sections, with different antenna sections corresponding to different operating frequencies. The operating frequency of each antenna section gradually increases along the direction from the first antenna element to the second antenna element.

7. A command antenna according to claim 1, characterized in that, The command antenna also includes a mounting part, which is located within the accommodating space, and one side of the mounting part is connected to the first antenna unit, while the other side of the mounting part is connected to the housing. The straight line formed by the extension direction of the sidewall of the mounting part forms an inclined angle with the plane where the bottom of the housing is located, and the inclined angle ranges from 120 degrees to 160 degrees.

8. A command antenna according to claim 1, characterized in that, The housing includes a cover and a base, the cover and the base being detachably connected, and the cover and the base enclosing each other to form the receiving space.

9. A command antenna according to claim 8, characterized in that, The base has at least one protrusion.

10. A command antenna according to claim 1, characterized in that, The housing is provided with at least one external interface for connecting external devices.

Images