CN111755797A - Short wave antenna device based on non-metal material highway facility and implementation method - Google Patents
Short wave antenna device based on non-metal material highway facility and implementation method Download PDFInfo
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- CN111755797A CN111755797A CN201910240887.4A CN201910240887A CN111755797A CN 111755797 A CN111755797 A CN 111755797A CN 201910240887 A CN201910240887 A CN 201910240887A CN 111755797 A CN111755797 A CN 111755797A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
- H01Q1/3225—Cooperation with the rails or the road
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
Abstract
The invention provides a short wave antenna device based on nonmetal road facilities and an implementation method thereof, wherein the short wave antenna device comprises a short wave antenna unit, and the short wave antenna unit comprises: the supporting unit is formed by road facilities made of nonmetal materials; the short-wave antenna body is arranged in the supporting unit and used for receiving and transmitting short-wave signals; the feed unit is connected with the short-wave antenna body and used for feeding the short-wave antenna body; the fixing unit, the short wave antenna body and the feed unit are all arranged on the fixing unit, the fixing unit is arranged on the ground, and the fixing unit is used for fixing the supporting unit. By applying the technical scheme of the invention, the technical problems of poor concealment, long deployment time and high cost of the short wave antenna device in the prior art are solved.
Description
Technical Field
The invention relates to the technical field of short wave antennas, in particular to a short wave antenna device based on a non-metal road facility and an implementation method.
Background
At present, short wave (wavelength of 10 m to 100 m) has been widely used in military, industrial and civil fields. The short wave has great application value in the field of emergency communication and has the advantage of long communication distance; short waves are less attenuated when propagating on the surface of the ocean and are also used for applications such as low-altitude warning and monitoring at sea. Due to the fact that the working wavelength is large, the physical size of the short-wave antenna is generally large, the target is obviously prone to damage, rapid and timely arrangement and construction are difficult, and the deployment cost is high.
In addition, the short wave array antenna composed of a plurality of short wave antennas has the technical characteristics of high gain and electric scanning, can effectively improve the action distance and the action range of a communication or detection system, and is increasingly applied. However, the distance between the short wave array antenna units is generally larger, so that the large short wave antenna array occupies a larger area and is more inconvenient to deploy.
Disclosure of Invention
The invention provides a short-wave antenna device based on nonmetal highway facilities and an implementation method thereof, which can solve the technical problems of poor concealment, large occupied area, long deployment time and high cost of the short-wave antenna device in the prior art.
According to an aspect of the present invention, there is provided a short wave antenna device based on a non-metallic material road facility, the short wave antenna device including a short wave antenna unit including: the supporting unit is formed by road facilities made of nonmetal materials; the short-wave antenna body is arranged in the supporting unit and used for receiving and transmitting short-wave signals; the feed unit is connected with the short-wave antenna body and used for feeding the short-wave antenna body; the fixing unit, the short wave antenna body and the feed unit are all arranged on the fixing unit, the fixing unit is arranged on the ground, and the fixing unit is used for fixing the supporting unit.
Further, the relation between the height L of the supporting unit and the wavelength lambda of the short-wave antenna body is that L is larger than or equal to 0.1 lambda.
Furthermore, the short-wave antenna unit also comprises an impedance matching unit, the impedance matching unit is connected with the feed unit, and the impedance matching unit is used for improving the broadband impedance matching characteristic of the short-wave antenna body; the impedance matching unit comprises an impedance matching network and a feed balun, the impedance matching network is connected with the feed balun, the impedance matching network is used for achieving tuning of the antenna, and the feed balun is used for achieving impedance matching of the antenna.
Further, the impedance matching network comprises at least one capacitor and at least one inductor, the at least one capacitor is connected in parallel, the at least one inductor is connected in series, and the at least one capacitor connected in parallel is connected with the at least one inductor connected in series; the feed balun comprises a high-frequency transformer and is used for realizing impedance transformation and balanced-unbalanced transformation of the output impedance of the impedance matching network.
Further, the road facilities made of the nonmetal materials comprise shading plates.
Further, the feed unit includes the radio frequency connector, and the supporting element includes first shading sheet layer and second shading sheet layer, and the short wave antenna body sets up between first shading sheet layer and second shading sheet layer, and the probe setting of radio frequency connector is between first shading sheet layer and second shading sheet layer, and the probe and the short wave antenna body of radio frequency connector are connected.
Further, the short wave antenna body is arranged between the first shading plate layer and the second shading plate layer through gluing or printing, and a probe of the radio frequency connector is connected with the short wave antenna body in a welding mode.
Further, the short wave antenna device comprises a plurality of short wave antenna units which are uniformly arranged at intervals, and the structural shape formed by the short wave antenna units comprises a straight line, a square or a circle.
Further, the relationship between the spacing D between any two adjacent short wave antenna elements in the plurality of short wave antenna elements and the wavelength λ and the maximum scan angle θ of the short wave antenna body is D < λ/(1+ sin (θ)).
According to another aspect of the invention, an implementation method of a short-wave antenna device based on a non-metal road facility is provided, and the implementation method comprises the following steps: selecting a plurality of road facilities which are uniformly arranged at intervals from road facilities made of nonmetal materials as supporting units of the short-wave antenna body, wherein the relation between the height L of any one supporting unit and the wavelength lambda of the short-wave antenna body is that L is more than or equal to 0.1 lambda, and the relation between the distance D between any two adjacent short-wave antenna units in the plurality of short-wave antenna units, the wavelength lambda of the short-wave antenna body and the maximum scanning angle theta is that D is less than lambda/(1 + sin (theta)); the short wave antenna bodies are correspondingly arranged in a plurality of supporting units which are evenly arranged at intervals one by one; one ends of the radio frequency connectors are connected with the short wave antenna bodies in a one-to-one correspondence mode, the other ends of the radio frequency connectors are connected with the impedance matching units in a one-to-one correspondence mode, and short wave signals are received and sent through the short wave antenna bodies.
By applying the technical scheme of the invention, the short wave antenna device based on the non-metal road facility is provided, the short wave antenna device utilizes the existing road facility resources in China, on the premise of not influencing the normal functions and use of the road facility resources, the road facility made of the non-metal materials is used as a supporting unit of a short wave antenna body, the short wave antenna body is fed through a feeding unit, and the short wave antenna body is used for receiving and transmitting short wave signals.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram of a short wave antenna based on a non-metal road facility according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a short-wave antenna device based on a nonmetallic road facility according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating a composite structure of a support unit and a short-wave antenna body according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram illustrating an impedance matching unit according to an embodiment of the present invention.
Wherein the figures include the following reference numerals:
10. a support unit; 11. a first light shielding sheet layer; 12. a second light shield plate layer; 20. a short wave antenna body; 30. a power feeding unit; 40. a fixing unit; 50. an impedance matching unit; 51. an impedance matching network; 52. a feed balun; 100. a short wave antenna unit; 200. a light shield.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
As shown in fig. 1 to 4, according to an embodiment of the present invention, there is provided a short wave antenna device based on a non-metallic road facility, the short wave antenna device including a short wave antenna unit 100, the short wave antenna unit 100 including a support unit 10, a short wave antenna body 20, a feed unit 30 and a fixing unit 40, the support unit 10 being formed by a non-metallic road facility, the short wave antenna body 20 being disposed in the support unit 10, the short wave antenna body 20 being configured to implement receiving and transmitting of short wave signals, the feed unit 30 being connected to the short wave antenna body 20, the feed unit 30 being configured to feed the short wave antenna body 20, the short wave antenna body 20 and the feed unit 30 being disposed on the fixing unit 40, the fixing unit 40 being disposed on the ground, and the fixing unit 40 being configured to fix the support unit 10.
By applying the configuration mode, the short wave antenna device based on the nonmetal material highway facilities is provided, the short wave antenna device utilizes the existing highway facility resources in China, on the premise that the normal functions and the use of the short wave antenna device are not influenced completely, the highway facilities made of nonmetal materials are used as the supporting unit of the short wave antenna body, the short wave antenna body is fed through the feeding unit, the short wave signals are received and sent through the short wave antenna body, the radiation function of the short wave antenna device can be realized by the mode, the occupied area of the antenna device can be reduced by using the existing highway facility resources, and the effects of strong concealment and quick deployment are achieved.
In addition, the non-metallic road facilities mentioned in the present invention refer to the road facilities, and do not refer to the whole road facilities made of non-metallic materials, but rather, the road facilities select a part of non-metallic facility sections as the support units of the short wave antenna body. In the concrete application, the road facility can comprise a metal section and a nonmetal section, and the nonmetal road facility in the invention particularly refers to that a part of nonmetal facility sections are selected from the road facility to be used as a support unit of the short wave antenna body.
In the present invention, in order to ensure that the antenna operates in a certain frequency band of short wave, the height L of the supporting unit 10 can be configured to have a relationship L ≧ 0.1 λ with the wavelength λ of the short wave antenna body 20.
Further, in the present invention, in order to improve the broadband impedance matching characteristic of the short wave antenna body, the short wave antenna unit 100 may be configured to further include an impedance matching unit 50, the impedance matching unit 50 being connected to the feeding unit 30, the impedance matching unit 50 being for improving the broadband impedance matching characteristic of the short wave antenna body 20. Specifically, in the present invention, the impedance matching unit 50 includes an impedance matching network 51 and a feeding balun 52, the impedance matching network 51 is connected to the feeding balun 52, the impedance matching network 51 is used for implementing tuning of the antenna, and the feeding balun 52 is used for implementing impedance matching of the antenna.
Further, in the present invention, in order to realize the tuning of the antenna, the impedance matching network 51 may be configured to include at least one capacitor and at least one inductor, the at least one capacitor being connected in parallel, the at least one inductor being connected in series, the at least one capacitor being connected in parallel and the at least one inductor being connected in series. As an embodiment of the present invention, as shown in fig. 4, the impedance matching network 51 includes two capacitors and an inductor, the two capacitors are connected in parallel, the capacitors and the inductor connected in parallel are connected in series, and the tuning of the antenna is realized through the combined action of the capacitors and the inductor. As another embodiment of the present invention, the number of capacitors and inductors in the impedance matching network 61 is not limited, and can be selected according to actual needs.
Further, in the present invention, in order to realize impedance transformation and better impedance matching of the antenna apparatus, the feeding balun 52 may be configured to include a high-frequency transformer, and the feeding balun 52 is used to realize impedance transformation and balanced-unbalanced transformation of the output impedance of the impedance matching network 51.
Specifically, in the present invention, the road facility made of a non-metallic material includes a light shielding plate. As shown in fig. 1 and 2, the short-wave antenna unit 100 is in the form of a vertical monopole antenna, and achieves good operation efficiency through impedance matching or the like. The feed unit 30 comprises a radio frequency connector, the support unit 10 comprises a first shading board layer 11 and a second shading board layer 12, the short wave antenna body 20 is arranged between the first shading board layer 11 and the second shading board layer 12, a probe of the radio frequency connector is arranged between the first shading board layer 11 and the second shading board layer 12, and the probe of the radio frequency connector is connected with the short wave antenna body 20.
As a specific embodiment of the present invention, the rf connector may adopt any form such as SMA type, N type, etc., or may directly adopt an rf cable. The short wave antenna body 20 can be glued or printed between the first shading plate layer 11 and the second shading plate layer 12 to realize the compounding of the short wave antenna body and the first and second shading plate layers, and the probe of the radio frequency connector is connected with the short wave antenna body 20 in a welding mode. The short wave antenna body 20 and the probe of the radio frequency connector are clamped between the first shading plate layer 11 and the second shading plate layer 12. The support unit 10 including the short wave antenna body 20 and the radio frequency connector are mounted on the fixing device 40.
Further, in the present invention, in order to improve the scanning performance of the short wave antenna device, the short wave antenna device may be configured to include a plurality of short wave antenna elements 100 uniformly spaced, and the structural shape formed by the plurality of short wave antenna elements 100 includes a straight line, a square or a circle.
By applying the configuration mode, the short wave antenna device is provided with the plurality of short wave antenna units at uniform intervals according to a certain interval and shape in the horizontal plane, and the scanning of the wave beam in a certain range of the horizontal plane is realized by controlling the phase relation of each short wave antenna unit. In addition, this short wave antenna unit utilizes the current highway facility resource of china, under the prerequisite that does not influence its normal function and use completely, with the highway facility of non-metallic material as the support element of short wave antenna body, feeds to short wave antenna body through the feed unit, realizes the receipt and the sending of shortwave signal through short wave antenna body, and this kind of mode can realize shortwave antenna device's radiation function, reaches the effect that strong disguise and quick deployment realized. Compared with the prior art, the short-wave antenna device provided by the invention has the following advantages.
First, the short wave antenna device of the present invention has high concealment. The short wave antenna device is integrated with highway facilities such as a shading plate and the like, has extremely high concealment, avoids being a primary attack target in wartime, and greatly improves survival probability.
Secondly, the short-wave antenna device is low in cost, simple in construction and capable of being deployed quickly. The short wave antenna device fully utilizes the existing road facilities, has extremely low cost and simple construction, and can be used for transforming or partially replacing the existing road facilities and can also be considered in advance when the facilities are newly built.
Thirdly, the short-wave antenna device is flexible in design and high in antenna performance. Highway facilities and the like generally have the available length of several kilometers to several hundred kilometers, the scale of the antenna array can be flexibly designed, and the antenna gain and the action range are high.
Fourthly, the short wave antenna device of the invention can save space. The short wave antenna device of the invention borrows road facility resources, does not need to additionally occupy land space, and greatly saves land resources.
Fifthly, the short wave antenna device is rich in resources and wide in distribution. The number of the road facilities which can be reconstructed or newly built is large, and the distribution is wide, so that the antenna is favorable for construction and deployment.
Further, in the present invention, in order to ensure the antenna scanning performance, and prevent the scanning range of the antenna device from being excessively small or the occurrence of grating lobes, the relationship between the spacing D between any two adjacent short-wave antenna elements among the plurality of short-wave antenna elements, and the wavelength λ and the maximum scanning angle θ of the short-wave antenna body 20 may be configured to be D < λ/(1+ sin (θ)).
According to another aspect of the present invention, there is provided a method for implementing a short-wave antenna device based on a non-metallic road facility, the method comprising: selecting a plurality of road facilities which are uniformly arranged at intervals from road facilities made of nonmetal materials as supporting units 10 of a short-wave antenna body 20, wherein the relation between the height L of any one supporting unit 10 and the wavelength lambda of the short-wave antenna body 20 is that L is more than or equal to 0.1 lambda, and the relation between the distance D between any two adjacent short-wave antennas in the plurality of short-wave antennas, the wavelength lambda of the short-wave antenna body 20 and the maximum scanning angle theta is that D < lambda/(1 + sin (theta)); arranging a plurality of short wave antenna bodies 20 in a one-to-one correspondence manner in a plurality of supporting units 10 which are uniformly arranged at intervals; one ends of the radio frequency connectors are connected with the short wave antenna bodies 20 in a one-to-one correspondence mode, the other ends of the radio frequency connectors are connected with the impedance matching units in a one-to-one correspondence mode, and short wave signals are received and sent through the short wave antenna bodies 20.
By applying the configuration mode, the short wave antenna device based on the nonmetal material highway facility can be obtained, and the short wave antenna device based on the nonmetal material highway facility can realize the scanning of wave beams in a certain range of a horizontal plane by arranging a plurality of short wave antennas at regular intervals and in a certain shape in the horizontal plane and controlling the phase relation of each short wave antenna unit. In addition, this short wave antenna unit utilizes the current highway facility resource of china, under the prerequisite that does not influence its normal function and use completely, with the highway facility of non-metallic material as the support element of short wave antenna body, feeds to short wave antenna body through the feed unit, realizes the receipt and the sending of shortwave signal through short wave antenna body, and this kind of mode can realize shortwave antenna device's radiation function, reaches the effect that strong disguise and quick deployment realized.
In order to further understand the present invention, the short wave antenna and the short wave antenna device based on the non-metallic road facility of the present invention are described in detail below with reference to fig. 1 to 4.
As shown in fig. 1 to 4, according to an embodiment of the present invention, there is provided a short wave antenna device based on a non-metallic road facility, the short wave antenna device includes a plurality of short wave antenna units 100 uniformly spaced apart from each other, the short wave antenna unit 100 includes a supporting unit 10, a short wave antenna body 20, a feeding unit 30, a fixing unit 40, and an impedance matching unit 50, the supporting unit 10 is formed by a light shielding plate made of a non-metallic material, the short wave antenna body 20 is disposed in the supporting unit 10, the short wave antenna body 20 is used for receiving and transmitting short wave signals, the feeding unit 30 is connected to the short wave antenna body 20, the feeding unit 30 is a radio frequency connector, and the radio frequency connector may be any form such as SMA type, N type, and the like, or may be a radio frequency cable directly. The radio frequency connector is used for feeding the short wave antenna body 20, the short wave antenna body 20 and the radio frequency connector are both arranged on the fixing unit 40, the fixing unit 40 is arranged on the ground, and the fixing unit 40 is used for fixing the shading plate.
The impedance matching unit 50 is connected to the feeding unit 30, and the impedance matching unit 50 is used to improve the broadband impedance matching characteristic of the short-wave antenna body 20. Specifically, in the present invention, the impedance matching unit 50 includes an impedance matching network 51 and a feeding balun 52, the impedance matching network 51 is connected to the feeding balun 52, the impedance matching network 51 is used for implementing tuning of the antenna, and the feeding balun 52 is used for implementing impedance matching of the antenna.
Fig. 1 is a schematic structural diagram of a short wave antenna device formed by using a shading plate on a single expressway. The short-wave antenna device is a one-dimensional horizontal array, and according to the antenna design principle, in order to ensure the scanning performance of the antenna, the distance D between the short-wave antenna units 100 is generally 0.2 λ to 0.7 λ, where λ is the antenna operating wavelength. By controlling the phase of each short-wave antenna element 100, beam scanning in the maximum 2 θ angular range in the horizontal plane can be achieved. The distance D between any two adjacent short-wave antenna units 100 in the plurality of short-wave antenna units 100 and the maximum scan angle need to satisfy D < λ/(1+ sin (θ)), and the short-wave antenna device is realized by replacing the original partial shading plate 200 at intervals of D.
As another embodiment of the present invention, a plurality of roads can be used, and the shading plates on the plurality of roads are modified to form other types of short-wave antenna devices such as a circular array and a square array, the principle of which is the same as that of the linear short-wave antenna device, and the present invention is not described in detail.
In summary, the present invention provides a short-wave antenna device, in which a plurality of short-wave antenna elements are uniformly arranged at intervals in a horizontal plane according to a certain distance and shape, and the phase relationship of each antenna element is controlled to scan a beam in a certain range on the horizontal plane. In addition, this short wave antenna device utilizes the current highway facility resource of china, under the prerequisite that does not influence its normal function and use completely, with the highway facility of non-metallic material as the support element of short wave antenna body, feeds to short wave antenna body through the feed unit, realizes the receipt and the sending of shortwave signal through short wave antenna body, and this kind of mode can realize short wave antenna device's radiation function, reaches the effect that strong disguise and quick deployment realized.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a short wave antenna device based on non-metallic material highway facility, a serial communication port, short wave antenna device includes short wave antenna unit, short wave antenna unit includes:
the supporting unit (10), the said supporting unit (10) is formed by road facilities of the non-metallic material;
the short-wave antenna body (20), the short-wave antenna body (20) is arranged in the supporting unit (10), and the short-wave antenna body (20) is used for receiving and transmitting short-wave signals;
a feed unit (30), the feed unit (30) being connected to the short-wave antenna body (20), the feed unit (30) being configured to feed the short-wave antenna body (20);
a fixing unit (40), the short wave antenna body (20) and the feeding unit (30) are both arranged on the fixing unit (40), the fixing unit (40) is arranged on the ground, and the fixing unit (40) is used for fixing the supporting unit (10).
2. Short-wave antenna device based on non-metallic road infrastructure according to claim 1, characterized in that the relation between the height L of the support unit (10) and the wavelength λ of the short-wave antenna body (20) is L ≧ 0.1 λ.
3. The short-wave antenna device based on nonmetallic road facility as claimed in claim 2, characterized in that, the short-wave antenna unit further includes an impedance matching unit (50), the impedance matching unit (50) is connected with the feed unit (30), the impedance matching unit (50) is used for improving the broadband impedance matching characteristic of the short-wave antenna body (20); the impedance matching unit (50) comprises an impedance matching network (51) and a feed balun (52), the impedance matching network (51) is connected with the feed balun (52), the impedance matching network (51) is used for realizing the tuning of the antenna, and the feed balun (52) is used for realizing the impedance matching of the antenna.
4. Short-wave antenna device based on non-metallic road infrastructure according to claim 3, characterized in that the impedance matching network (51) comprises at least one capacitor and at least one inductor, at least one of the capacitors being connected in parallel, at least one of the inductors being connected in series, at least one of the capacitors connected in parallel being connected with at least one of the inductors connected in series; the feed balun (52) comprises a high frequency transformer, and the feed balun (52) is used for realizing impedance transformation and balanced-unbalanced transformation of the output impedance of the impedance matching network (51).
5. The short-wave antenna device based on non-metallic road facilities as claimed in any one of claims 1 to 4, wherein the non-metallic road facilities include a shading plate.
6. Short-wave antenna device based on non-metallic road infrastructure according to claim 5, characterized in that the feed unit (30) comprises a radio frequency connector, the support unit (10) comprises a first shading plate layer (11) and a second shading plate layer (12), the short-wave antenna body (20) is arranged between the first shading plate layer (11) and the second shading plate layer (12), a probe of the radio frequency connector is arranged between the first shading plate layer (11) and the second shading plate layer (12), and the probe of the radio frequency connector is connected with the short-wave antenna body (20).
7. Short-wave antenna device based on non-metallic road infrastructure according to claim 6, characterized in that the short-wave antenna body (20) is arranged between the first shading plate layer (11) and the second shading plate layer (12) by gluing or printing, and the probe of the radio frequency connector is welded with the short-wave antenna body (20).
8. The short-wave antenna device based on non-metallic road facilities of claim 6, wherein the short-wave antenna device comprises a plurality of short-wave antenna units which are uniformly spaced, and the structural shape formed by the plurality of short-wave antenna units comprises a straight line, a square or a circle.
9. Short-wave antenna device based on non-metallic road infrastructure according to claim 8, characterized in that the relation between the distance D between any two adjacent short-wave antenna units of the plurality of short-wave antenna units and the wavelength λ and the maximum scanning angle θ of the short-wave antenna body (20) is D < λ/(1+ sin (θ)).
10. A realization method of a short wave antenna device based on a non-metal road facility is characterized by comprising the following steps:
selecting a plurality of road facilities which are uniformly arranged at intervals from road facilities made of nonmetal materials as supporting units (10) of a short-wave antenna body (20), wherein the relation between the height L of any one supporting unit (10) and the wavelength lambda of the short-wave antenna body (20) is L & gt 0.1 lambda, and the relation between the distance D between any two adjacent short-wave antenna units in the short-wave antenna units, the wavelength lambda of the short-wave antenna body (20) and the maximum scanning angle theta is D & lt lambda/(1 + sin (theta));
a plurality of short wave antenna bodies (20) are correspondingly arranged in a plurality of supporting units (10) which are evenly arranged at intervals;
one ends of the radio frequency connectors are correspondingly connected with the short wave antenna bodies (20) one by one, the other ends of the radio frequency connectors are correspondingly connected with the impedance matching units (50) one by one, and the short wave signals are received and transmitted through the short wave antenna bodies (20).
Priority Applications (1)
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| CN201910240887.4A CN111755797B (en) | 2019-03-28 | 2019-03-28 | Short wave antenna device based on non-metal material highway facility and implementation method |
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| CN201910240887.4A CN111755797B (en) | 2019-03-28 | 2019-03-28 | Short wave antenna device based on non-metal material highway facility and implementation method |
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| CN111755797A true CN111755797A (en) | 2020-10-09 |
| CN111755797B CN111755797B (en) | 2022-02-08 |
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Citations (15)
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| CN111755797B (en) | 2022-02-08 |
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