Vehicle-mounted foldable short-wave dual-non-shaped broadband antenna

Abstract

The utility model relates to the technical field of radio short-wave transmitting (receiving) antennas, and discloses a vehicle-mounted foldable short-wave dual-non-shaped broadband antenna, which comprises six pairs of antenna oscillators, a main beam and assembly line, a matching part, a main beam unfolding and folding driving mechanism and a support, the two lines are symmetrically arranged along the two sides of the two-line type collection line to form a double-non-character-shaped structure; the main beam and the assembly line are of a triangular beam structure and comprise a first upper chord pipe, a second upper chord pipe, a third upper chord pipe, a first lower chord pipe, a second lower chord pipe and a third lower chord pipe, and all the chord pipes are connected into a whole through insulation triangular supports. According to the utility model, the vehicle-mounted foldable short-wave dual-non-shaped broadband antenna is a new-program vehicle-mounted short-wave broadband directional antenna, the working frequency band is 4MHz-30MHz, the bearing power is greater than 1kW, and the vehicle-mounted foldable short-wave dual-non-shaped broadband antenna has the characteristics of miniaturization, high gain, light weight and foldable performance, can be mounted at the top of a lifting rod, and is used for vehicle-mounted mobile communication.

Description

TECHNICAL FIELD

[0001] The utility model relates to wireless radio short wave transmitting (receiving) antenna technical field especially relates to a kind of vehicle-mounted deployable short wave double non-form wideband antenna. BACKGROUND

[0002] Vehicle-mounted antenna is a kind of radio equipment receiving and transmitting device installed on vehicle, usually made of metal conductor or composite material, its shape, size and installation position are designed according to different communication needs and vehicle type, common vehicle-mounted short wave antenna has pole antenna, loop antenna, log-periodic antenna etc.Form.It is the bridge of short wave communication between vehicle and outside, can adapt short wave radio use requirement.

[0003] Short wave communication can realize several thousand kilometers of long-distance communication without relay, and the demand for long-distance short wave mobile communication is more and more vigorous at present.Vehicle-mounted short wave antenna can not only receive short wave signal, but also effectively transmit short wave signal, and it is the indispensable key component for vehicle to realize mobile short wave communication.Currently, vehicle-mounted short wave antenna is either narrowband tuning antenna, which is omnidirectional antenna, and can only be used for less than 1000km short-distance communication;Or deployable wideband log-periodic antenna, which is directional antenna, antenna curtain adopts flexible oscillator and suspension structure, size, complex structure, high profile in retracted state, difficult to adapt to roof platform installation use requirement.To ensure that vehicle-mounted short wave antenna has good adaptability to communication vehicle, the miniaturization requirement of vehicle-mounted short wave antenna structure is higher and higher, but the existing short wave directional antenna occupies large area when erecting, cannot meet the demand of more than 1000km medium-long distance mobile communication, therefore, a kind of vehicle-mounted deployable short wave double non-form wideband antenna is proposed to solve the above problems. UTILITY MODEL CONTENT

[0004] In order to make up for the above shortcomings, the utility model provides a kind of vehicle-mounted deployable short wave double non-form wideband antenna, aims at improving the problem that vehicle-mounted antenna in prior art is difficult to consider medium-long distance communication demand and roof platform installation adaptability.

[0005] In order to realize the above purpose, the utility model adopts the following technical scheme:

[0006] The application discloses a vehicle-mounted short-wave broadband antenna which can be unfolded and folded, and belongs to the technical field of antennas.

[0007] As a further description of the above technical scheme:

[0008] The antenna oscillator is composed of two groups of symmetrically arranged three-element horizontal symmetric oscillator arrays, each group containing three pairs of horizontal symmetric oscillators, the oscillator lengths being equal but the adjacent spacings being unequal, thus forming a "non" character-shaped structure, and the two groups of "non" character-shaped structures being connected at the support through intermediate coupling elements.

[0009] As a further description of the above technical scheme:

[0010] Each of the antenna oscillators comprises six sections of sleeve pipes, i.e., oscillator pipe one, oscillator pipe two, oscillator pipe three, oscillator pipe four, oscillator pipe five and oscillator pipe six, the pipe diameters gradually decreasing from the root to the tip, and the root being fixed through a root insulation connecting piece.

[0011] As a further description of the above technical scheme:

[0012] The upper chord pipe one, the upper chord pipe two and the upper chord pipe three of the main beam and the collection line are connected with the lower chord pipe one, the lower chord pipe two and the lower chord pipe three through insulation triangle struts and insulation connecting pieces to form a triangular beam structure, and the main beam is made of aluminum alloy pipes which are connected in three sections in sleeve and can be axially extended and retracted.

[0013] As a further description of the above technical scheme:

[0014] The upper chord pipe one, the upper chord pipe two and the upper chord pipe three of the collection line serve as conductive components and are insulated and separated from the lower chord pipe one, the lower chord pipe two and the lower chord pipe three of the main beam through insulation triangle struts.

[0015] As a further description of the above technical scheme:

[0016] The T-shaped insulation piece of the support is made of high-strength glass steel material, the bottom of the T-shaped insulation piece is connected with the lifting rod through a flange interface, and the top of the T-shaped insulation piece supports the main beam and the collection line.

[0017] As a further description of the above technical solutions:

[0018] The impedance matcher is fixed on the insulating triangular support at the front end of the main beam, the terminal matching element is fixed on the lower chord tube one at the rear end of the main beam through the terminal element clamp, and the intermediate coupling element is fixed on the support T-shaped insulating part through the intermediate element clamp.

[0019] As a further description of the above technical solutions:

[0020] The main beam unfolding and folding driving mechanism is an electric cylinder driving mechanism, which is installed between the upper chord tube one, the upper chord tube two and the upper chord tube three of the main beam, and drives the main beam three-section sleeve pipe to axially expand and contract through the electric cylinder piston rod.

[0021] As a further description of the above technical solutions:

[0022] In the fully folded state of the antenna, the vibrator tube one to the vibrator tube six of the antenna vibrator are completely sleeved, the transverse size is less than or equal to 2.4m, and the height is less than or equal to 0.4m, so that the antenna can adapt to the installation environment of the roof.

[0023] The utility model has the following beneficial effects:

[0024] 1. The vehicle-mounted short-wave double-non-shaped wideband antenna can be unfolded and folded, is a novel vehicle-mounted short-wave wideband directional antenna, adopts six groups of compactly arranged symmetrical vibrators with the same structure size to form a double-non-shaped structure, has the characteristics of miniaturization, high gain and light weight, is particularly suitable for occasions with high requirements on the weight, area occupied and unfolding and folding speed of the antenna, such as vehicle-mounted, ship-mounted and building roof, and the antenna is simple to operate and easy to be mastered and implemented by a user.

[0025] 2. The main beam and the vibrator of the vehicle-mounted short-wave double-non-shaped wideband antenna are of telescopic structures, can be quickly unfolded outward or folded inward. In the unfolded state, the antenna body has excellent electrical performance and a power capacity greater than 1kW, and can be used for medium and long distance communication; and the structural size of the antenna body in the folded state meets the driving requirements of the vehicle on the road. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A perspective view of the vehicle-mounted short-wave double-non-shaped wideband antenna is provided for the utility model;

[0027] Figure 2 A fully folded state schematic view of the vehicle-mounted short-wave double-non-shaped wideband antenna is provided for the utility model;

[0028] Figure 3 A single vibrator schematic view of the vehicle-mounted short-wave double-non-shaped wideband antenna is provided for the utility model;

[0029] Figure 4The utility model provides a kind of main beam structure schematic diagram of vehicle-mounted deployable short wave double non-form wideband antenna;

[0030] Figure 5 The utility model provides a kind of support structure schematic diagram of vehicle-mounted deployable short wave double non-form wideband antenna;

[0031] Figure 6 The utility model provides a kind of main beam drive mechanism local schematic diagram of vehicle-mounted deployable short wave double non-form wideband antenna;

[0032] Figure 7 The utility model provides a kind of front end impedance matcher installation position local schematic diagram of vehicle-mounted deployable short wave double non-form wideband antenna;

[0033] Figure 8 The utility model provides a kind of terminal matching element installation position local schematic diagram of vehicle-mounted deployable short wave double non-form wideband antenna;

[0034] Figure 9 The utility model provides a kind of middle coupling element installation position local schematic diagram of vehicle-mounted deployable short wave double non-form wideband antenna.

[0035] Legend:

[0036] 1, antenna oscillator; 11, root insulating connecting piece; 12, oscillator tube one; 13, oscillator tube two; 14, oscillator tube three; 15, oscillator tube four; 16, oscillator tube five; 17, oscillator tube six; 2, main beam and collection line; 21, insulating triangular support; 22, upper chord tube one; 23, upper chord tube two; 24, upper chord tube three; 25, insulating connecting piece; 26, lower chord tube three; 27, lower chord tube two; 28, lower chord tube one; 3, main beam deployment drive mechanism; 31, T-shaped insulating piece; 32, fixed flange; 4, impedance matcher; 41, terminal element clamp; 42, middle element clamp; 5, terminal matching element; 6, middle coupling element; 7, support. DETAILED DESCRIPTION

[0037] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings in the embodiments of the utility model below, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0038] Reference Figure 1 And Figure 2The utility model provides an embodiment: a kind of vehicle-mounted deployable short wave double non-shaped wideband antenna, including antenna oscillator 1, main beam and collection line 2, main beam deployment drive mechanism 3, impedance matcher 4, terminal matching element 5, intermediate coupling element 6, support 7.The short wave double non-shaped wideband antenna is made of two groups of completely symmetrical three-element horizontal symmetrical oscillator array.Collecting line and main beam of each group of three-element horizontal symmetrical oscillator array constitute an entirety, and can be electrically telescopic and manually telescopic;6 telescopic cantilever rod oscillators are symmetrically installed on the two sides of collection line, and the length of oscillator is equal, and the interval of adjacent oscillators is unequal, and constitute a "non" character-shaped antenna structure.Two groups of "non" character-shaped antenna center symmetry, linear arrangement, and the collection line of two groups of "non" character-shaped antenna is connected by coupling element at support, forms a miniaturized short wave wideband directional antenna with 4MHz~30MHz working frequency band, and the standing wave ratio is ≤2.5, and the gain is ≥6dBi (typical value), and the bearing power is ≥1kW, to adapt to the installation environment of roof, the transverse dimension (oscillator length) of antenna in full retracted state is ≤2.4m, and the longitudinal dimension is ≤1.7m, and the height is ≤0.4m.

[0039] Referring to Figure 3 The conductive part of the antenna radiator oscillator tube can be made of metal materials with good conductivity, such as copper, aluminum alloy, titanium alloy, etc. The entire oscillator tube is connected by six types of pipe materials (oscillator tube 1 12, oscillator tube 2 13, oscillator tube 3 14, oscillator tube 4 15, oscillator tube 5 16, and oscillator tube 6 17). The length of a single oscillator cantilever rod is ≥5.8m, and the pipe diameter gradually decreases from the root to the tip to achieve the purpose of being deployable. The roots of the two symmetrical oscillator tubes are connected into one body by an insulating connector 11. To ensure the flexibility of the horizontal oscillator deployment, the total weight of a single oscillator cantilever rod is ≤1.8kg.

[0040] The antenna is composed of two groups of symmetrical three-element horizontal symmetrical oscillator arrays centered on the support. Each group of antennas has 3 pairs of horizontal symmetrical oscillators symmetrically arranged along the two sides of the collection line, and the length of the oscillators is equal, and the interval of adjacent oscillators is unequal, and constitutes a "non" character-shaped antenna structure. The two groups of "non" character-shaped antennas are symmetrically arranged along the collection line with the support as the center, and the collection lines of the two groups of "non" character-shaped antennas are connected together at the support through coupling elements.

[0041] Referring to Figure 4 The main beam is a triangular beam structure, which is divided into three sections and connected together. Each section is composed of upper and lower chord tubes (upper chord tube 1 22, lower chord tube 1 28, upper chord tube 2 23, lower chord tube 2 27, upper chord tube 3 24, and lower chord tube 3 26), and is connected into one body by an insulating triangular strut 21, so that the main beam can be deployed. The main beam is made of aluminum alloy pipe, and the two upper chord tubes are used as collection lines. The collection line is a two-wire collection line, and the collection line and the main beam are designed as a whole. The collection line is a component part of the main beam, and the collection line and other metal components of the main beam are insulated.

[0042] Reference Figure 5 Support 7 is used to support the main beam and consists of a T-shaped insulating component 31 and a fixed flange 32, see... Figure 5 Support 7 is located in the middle of the main beam and bears the weight of the entire antenna body. The T-shaped insulating component 31 is made of high-strength fiberglass material to achieve insulation between the connecting wires and antenna radiating components and the antenna support structure.

[0043] Reference Figure 6 The main beam utilizes an electric cylinder drive mechanism 3 to achieve bidirectional telescopic movement. The electric cylinder is mounted on the upper part of the main beam and drives its axial movement. The controller features an emergency stop function, allowing for immediate stopping during telescopic movement; an automatic stop function when the telescopic position is reached; and an indication function for the main beam's telescopic status. A manual drive function is also included, allowing movement of the main beam by cranking a handwheel. In the deployed state, the antenna's lateral dimension is ≥12m, and its longitudinal dimension is ≥2.9m.

[0044] Reference Figure 7 , Figure 8 and Figure 9 Matching components are installed at the front, middle and rear ends of the antenna main beam to achieve broadband matching of the antenna. The front end is an impedance matching device 4, which is directly installed on the insulating triangular support 21 of the main beam. The rear end is a terminal matching element, which is fixed to the lower chord tube 1 of the main beam through the terminal element clamp 41. The middle coupling element 6 is fixed to the support T-shaped insulating part 31 through the middle element clamp 42. The housing of the matching components at the front and rear ends of the main beam does not exceed the length of the main beam.

[0045] Working Principle: When the antenna is in the deployed state, six pairs of retractable horizontally symmetrical dipoles 1 are symmetrically arranged along both sides of the two-wire convergence line, forming a directional radiation array with a double "non" shaped structure. Each group of three-element horizontally symmetrical dipole arrays, through the design of unequal spacing between adjacent dipoles, forms an electromagnetic field distribution with a specific phase difference, achieving directional radiation and reception within a wide frequency band of 4MHz to 30MHz. The convergence line, composed of upper chord tube 1 22, upper chord tube 23, and upper chord tube 3 24 of the main beam, serves as the signal transmission carrier. It is fixed to the insulating triangular support 21 of the main beam through the impedance matching device 4 at the front end, realizing a 4:1 impedance transformation and balanced-to-unbalanced conversion to ensure signal matching between the antenna and the feed line. The intermediate coupling element 6 is fixed to the support T-shaped insulating part 31 through the intermediate element clamp 42, connecting the convergence line of the two "non" shaped antennas and optimizing the cross-array signal coupling efficiency. The rear-end terminal matching element 5 is fixed to the lower chord tube 1 28 of the main beam through the terminal element clamp 41, suppressing the standing wave of the convergence line by absorbing reflected waves and controlling the standing wave ratio within the range of ≤2.5. At this time, with a typical gain of 6dBi and a power capacity of >1kW, the antenna can achieve medium- and long-range shortwave communication of more than 1000km, meeting the strong signal coverage requirements of vehicle-mounted mobile scenarios.

[0046] The main beam extension and retraction driving mechanism 3 adopts dual-mode design of electric cylinder driving and manual driving. The electric cylinder is installed between the upper chord pipe 1 22, the upper chord pipe 2 23 and the upper chord pipe 3 24 of the main beam, and drives the three-section sleeve pipe type main beam to extend and retract through the axial movement of the piston rod. The controller has the functions of emergency stop, self-stop at position and state indication, which ensures the extension accuracy and safety; when the power system fails, manual extension and retraction can be realized by shaking the hand wheel, which improves the environmental adaptability. The antenna oscillator 1 adopts a 6-section pipe diameter gradually changing sleeve joint pipe material oscillator pipe 1 12 to oscillator pipe 6 17, and is fixed at the root through the root insulation connecting piece 11. The single root oscillator can be manually stretched or contracted in the horizontal state. The fully extended length of the single root oscillator is 5.8m, and the overall oscillator length after contraction is ≤2.4m. The main beam is retracted to a compact size of ≤1.7m in length and ≤0.4m in height, so that the antenna can completely fit the roof platform in the non-working state, meet the height limit requirement of the vehicle driving, and complete the response to the emergency communication demand within a few minutes through the fast extension and retraction electric mode.

[0047] Finally, it should be pointed out that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A vehicle mounted deployable short wave dual polarized wideband antenna comprising antenna elements (1), a main beam and a collection line (2), matching components, a main beam deployment drive mechanism (3) and a support (7), characterized in that: The antenna oscillator (1) is six pairs of telescopic horizontal symmetrical oscillators, symmetrically arranged along both sides of the two-wire collection line to form a double "non" structure; the main beam and the collection line (2) are triangular beam structures, including upper chord tube one (22), upper chord tube two (23), upper chord tube three (24), lower chord tube one (28), lower chord tube two (27), and lower chord tube three (26), each chord tube is connected into a whole through an insulating triangular support (21), wherein the upper chord tube one (22), the upper chord tube two (23), and the upper chord tube three (24) constitute a two-wire collection line; the matching components include a front-end impedance matcher (4), a middle intermediate coupling element (6), and a rear-end terminal matching element (5); the support (7) includes a T-shaped insulating part (31) and a fixed flange (32), the T-shaped insulating part (31) supports the main beam and realizes insulation, and the fixed flange (32) is used for being installed at the top of the lifting rod; the main beam extension and retraction driving mechanism (3) is installed on the upper part of the main beam to drive the main beam to axially extend and retract.

2. The short-wave dual-nonform wideband antenna according to claim 1, characterized in that: The antenna oscillator (1) is composed of two groups of symmetrically arranged three-element horizontal symmetrical oscillator arrays, each group containing three pairs of horizontal symmetrical oscillators, the oscillator lengths being equal but the adjacent spacings being unequal, to form a "non" character structure, and the two groups of "non" character structures being connected at the support (7) through the intermediate coupling element (6).

3. The short wave dual non-shaped wideband antenna according to claim 2, characterized in that: A single said antenna oscillator (1) includes six sections of sleeve pipe materials, i.e., oscillator tube one (12), oscillator tube two (13), oscillator tube three (14), oscillator tube four (15), oscillator tube five (16), and oscillator tube six (17), the pipe diameters gradually decreasing from the root to the tip, and the root being fixed through a root insulating connector (11).

4. The short-wave dual-nonform wide-band antenna according to claim 1, characterized in that: The upper chord tube one (22), the upper chord tube two (23), and the upper chord tube three (24) of the main beam and the collection line (2) and the lower chord tube one (28), the lower chord tube two (27), and the lower chord tube three (26) are connected into a triangular beam structure through the insulating triangular support (21) and the insulating connector (25), and the main beam adopts aluminum alloy pipe in three sections of sleeve connection and can axially extend and retract.

5. The short-wave dual-nonform wide-band antenna according to claim 1, characterized in that: The upper chord tube one (22), the upper chord tube two (23), and the upper chord tube three (24) of the collection line (2) serve as conductive components and are insulated and isolated from the lower chord tube one (28), the lower chord tube two (27), and the lower chord tube three (26) of the main beam through the insulating triangular support (21).

6. The short wave dual non-shaped wideband antenna according to claim 1, wherein: The T-shaped insulating part (31) of the support (7) adopts high-strength glass steel material, the bottom fixed flange (32) is connected with the lifting rod through a flange interface, and the top supports the main beam and the collection line (2).

7. The short-wave dual-nonform wide-band antenna according to claim 1, characterized in that: The impedance matcher (4) is fixed to the front end of the main beam through the insulating triangular support (21), the terminal matching element (5) is fixed to the lower chord tube one (28) at the rear end of the main beam through a terminal element clamp (41), and the intermediate coupling element (6) is fixed to the support T-shaped insulating part (31) through an intermediate element clamp (42).

8. The short-wave dual-nonform wideband antenna according to claim 1, characterized in that: The main beam extension and retraction driving mechanism (3) is an electric cylinder driving mechanism, which is installed between the upper chord tube one (22), the upper chord tube two (23), and the upper chord tube three (24) of the main beam, drives the three sections of sleeve pipes of the main beam to axially extend and retract through the electric cylinder piston rod.

9. The short wave dual non-shaped wideband antenna according to claim 1, wherein: In the full retracted state, the antenna elements (1) are fully nested, the transverse dimension (element length) is ≤ 2.4 m, the height is ≤ 0.4 m, and the antenna is suitable for installation on the roof of a vehicle.

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