Short wave whip antenna device

Abstract

The utility model provides a kind of short wave whip antenna device, the short wave whip antenna device includes: antenna pole and support seat;The one end of the antenna pole is fixedly connected with support seat, and the support seat is equipped with balun and signal input interface, and the first cable is wound on the balun, and the one end of the first cable is electrically connected with signal input interface, and the other end of the first cable is electrically connected with the one end of antenna pole;The antenna pole includes: multiple main pole body and at least one composite pole body, and the main pole body and composite pole body are all conductive material;The composite pole body includes: connecting pole body and conductive cable, and the material of the main pole body and the connecting pole body is all conductive material, and the end of the main pole body is connected with the end of connecting pole body to form the antenna pole of whip structure;The conductive cable is spirally wound on the side wall of connecting pole body, and both ends of the conductive cable are electrically connected with the connecting pole body.The utility model can expand the application scenario of short wave whip antenna device.

Description

Technical Field

[0001] This utility model relates to the field of antenna technology, and in particular to a shortwave whip antenna device. Background Technology

[0002] Currently, shortwave whip antennas are relatively large in size, with a length generally between 10 and 12 meters, in order to ensure that the shortwave whip antenna has good radiation capability.

[0003] However, due to their size limitations, existing shortwave whip antennas are not easy to fix on high-altitude structures such as iron towers and can only be fixed on the ground, which limits the application scenarios of shortwave whip antennas. Utility Model Content

[0004] To address the aforementioned issues, the shortwave whip antenna device provided by this invention expands the application scenarios of the shortwave whip antenna device by electrically connecting the antenna mast to the signal input interface using a balun.

[0005] This utility model provides a shortwave whip antenna device, which includes: an antenna mast and a support base; One end of the antenna mast is fixedly connected to the support base. A balun and a signal input interface are installed on the support base. A first cable is wound around the balun. One end of the first cable is electrically connected to the signal input interface, and the other end of the first cable is electrically connected to one end of the antenna mast. The antenna mast includes: multiple main rod sections and at least one composite rod section, wherein both the main rod sections and the composite rod section are made of conductive materials; The composite rod includes a connecting rod and a conductive cable. Both the main rod and the connecting rod are made of conductive materials. The end of the main rod is connected to the end of the connecting rod to form a whip-like structure of the antenna rod. The conductive cable is spirally wound around the side wall of the connecting rod, and both ends of the conductive cable are electrically connected to the connecting rod.

[0006] Optionally, the radii of the multiple main rod sections and at least one composite rod section gradually decrease from bottom to top, and adjacent main rod sections and composite rod sections are slidably connected in the vertical direction to achieve a telescopic antenna rod. The composite rod also includes: a sleeve; The sleeve is fitted around the periphery of the conductive cable and connected to the connecting rod.

[0007] Optionally, the sleeve is made of an insulating material.

[0008] Optionally, the multi-section composite rod includes: an upper composite rod and a lower composite rod; The upper composite rod and the lower composite rod are each connected to at least one of the main rods.

[0009] Optionally, the upper composite rod is located on the side of the lower composite rod away from the support base; The number of turns of the conductive cable in the upper composite rod around the corresponding connecting rod is less than the number of turns of the conductive cable in the lower composite rod around the corresponding connecting rod.

[0010] Optionally, the main rod has 5 sections, and the 5 main rods are connected end to end in sequence. The upper composite rod and the lower composite rod are located at opposite ends of the 5 main rods, and the end of the lower composite rod away from the main rod is fixedly connected to the support base. The length of the antenna mast ranges from 55 meters to 12 meters. The number of turns of the conductive cable in the upper composite mast body around the corresponding connecting rod body is 7, and the number of turns of the conductive cable in the lower composite mast body around the corresponding connecting rod body is 30. The diameter of the connecting rod in both the upper and lower composite rods at the location where the corresponding conductive cable is wound is between 20 mm and 25 mm.

[0011] Optionally, the outer diameter of the balun ranges from 45 mm to 50 mm, the inner diameter of the balun ranges from 25 mm to 30 mm, and the thickness of the balun ranges from 12 mm to 18 mm.

[0012] Optionally, a second cable is also wound around the balun, with the two ends of the second cable shorted together.

[0013] Optionally, the shortwave whip antenna device further includes: a waterproof cover; The waterproof cover encloses the balun inside the support base. The waterproof cover is located above the support base and is fixedly connected to the support base. One end of the antenna mast is fixedly connected to the support base through the waterproof cover.

[0014] Optionally, the shortwave whip antenna device further includes: a heat sink and a base; The base is fixedly installed below the heat sink, the support is fixedly installed above the heat sink, and the antenna mast is located on the side of the support that is away from the heat sink.

[0015] The shortwave whip antenna device provided in this embodiment of the invention uses a balun to electrically connect the antenna rod to the signal input interface, and sets the antenna rod body into a whip-like structure that connects the rod body and the conductive cable end to end, which effectively reduces the length of the antenna and expands the application scenarios of the shortwave whip antenna device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic partial cross-sectional view of a shortwave whip antenna device according to an embodiment of this application; Figure 2 This is a schematic structural diagram of a shortwave whip antenna device according to an embodiment of this application.

[0018] Figure label: 1. Antenna mast; 11. Main mast; 12. Composite mast; 121. Upper composite mast; 122. Lower composite mast; 1231. Connecting mast; 12311. Winding section; 12312. End; 1232. Sleeve; 2. Support base; 3. Balun; 4. Signal input interface; 5. Waterproof cover; 6. Heat sink; 7. Base; 8. Connecting flange. Detailed Implementation

[0019] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0021] One embodiment of this utility model provides a shortwave whip antenna device, see [link to relevant documentation]. Figure 1 and Figure 2 The shortwave whip antenna device includes: an antenna mast 1 and a support base 2.

[0022] One end of the antenna mast 1 is fixedly connected to the support base 2. The support base 2 is equipped with a balun 3 and a signal input interface 4. A first cable is wound around the balun 3. One end of the first cable is electrically connected to the signal input interface 4, and the other end of the first cable is electrically connected to one end of the antenna mast 1.

[0023] The antenna mast 1 includes: multiple main mast sections 11 and at least one composite mast section 12, wherein both the main mast sections 11 and the composite mast section 12 are made of conductive materials.

[0024] The composite rod 12 includes a connecting rod 1231 and a conductive cable. Both the main rod 11 and the connecting rod 1231 are made of conductive materials. The ends 12312 of the main rod 11 and the ends 12312 of the connecting rod 1231 are welded to form a whip-like structure for the antenna rod 1. Adjacent main rods 11 are nested together and can slide relative to each other along their axial direction, thereby enabling the antenna rod 1 to extend and retract. The diameter of the main rod 11 decreases as it is further from the support base 2. The structure for enabling the extension and retraction of the antenna rod 1 can adopt existing structures similar to retractable antennas on radios; this embodiment does not limit this approach.

[0025] It is understandable that different lengths (heights) of the antenna mast 1 will result in varying gains for the shortwave whip antenna device. The higher the antenna mast 1, the higher the gain of the shortwave whip antenna device. Similarly, the lower the antenna mast 1, the lower the gain of the shortwave whip antenna device. However, in this embodiment, even at its lowest height, the gain of the shortwave whip antenna device still meets the usage requirements of the retractable antenna mast 1. The specific length of the antenna mast 1 can be freely adjusted at the site according to actual needs.

[0026] The conductive cable is spirally wound around the side wall of the connecting rod 1231, and both ends of the conductive cable are electrically connected to the connecting rod 1231. By setting the antenna mast 1 as a telescopic antenna, the installation length requirements of different shortwave sites can be met, and the materials can be standardized without affecting the performance indicators.

[0027] The balun 3 coil, through its internal magnetic field distribution, converts common-mode interference in unbalanced signals into differential signals, effectively suppressing interference and improving signal purity. Simultaneously, the balun 3 coil achieves impedance matching, making energy transfer between the shortwave whip antenna and the feeder more efficient. The feeder is the radio frequency electromagnetic energy transmission line connecting the shortwave whip antenna and the transceiver, used for radio frequency energy transmission. This design not only improves antenna performance but also reduces signal loss during transmission. The conductive coil, through its internal electromagnetic field distribution, enables the reception and transmission of signals in different frequency bands. When a signal passes through the conductive coil, it excites internal electromagnetic oscillations, converting signal energy into radiated energy. This wide-band coverage characteristic allows the conductive coil to meet various communication needs, ensuring communication continuity and stability.

[0028] In a further optional embodiment of this invention, the composite rod 12 further includes a sleeve 1232. The sleeve 1232 is fitted around the periphery of the conductive cable and connected to the connecting rod 1231.

[0029] In this embodiment, the connecting rod 1231 is a stepped shaft structure that is thicker at both ends and thinner in the middle. Specifically, the connecting rod 1231 includes a winding portion 12311 and end portions 12312 located at both ends of the winding portion 12311 and fixedly connected to it. The conductive cable is wound around the winding portion 12311, and the sleeve 1232 is sleeved on the outer periphery of the end portions 12312 at both ends of the connecting rod 12311 and threadedly connected to them. By providing the sleeve 1232, the conductive cable can be protected.

[0030] Furthermore, the sleeve 1232 is made of an insulating material, such as insulating plastic or resin. By limiting the material of the sleeve 1232, short circuits in the conductive coil can be prevented. In this embodiment, the sleeve 1232 is made of polyethylene.

[0031] In a further optional embodiment of this embodiment, the multiple composite rods 12 include: an upper composite rod 12112 and a lower composite rod 12212; The upper composite rod 12112 and the lower composite rod 12212 are respectively connected to at least one main rod 11. Specifically, the upper composite rod 12112 and the lower composite rod 12212 are connected to at least one main rod 11. It is understood that both the upper composite rod 12112 and the lower composite rod 12212 are composite rods 12, with the same structure and material, but their dimensions may be the same or different; this embodiment does not impose specific limitations on this.

[0032] Furthermore, the upper composite rod 12112 is located on the side of the lower composite rod 12212 away from the support base 2. The number of turns of the conductive cable in the upper composite rod 12112 around the corresponding connecting rod 1231 is less than the number of turns of the conductive cable in the lower composite rod 12212 around the corresponding connecting rod 1231. Specifically, the number of turns of the conductive cable in the upper composite rod 12112 around the corresponding connecting rod 1231 ranges from 5 to 10; the number of turns of the conductive cable in the lower composite rod 12212 around the corresponding connecting rod 1231 ranges from 28 to 34.

[0033] In a further optional embodiment of this embodiment, the main rod 11 has 5 sections, and the 5 main rods 11 are connected end to end in sequence. The upper composite rod 12112 and the lower composite rod 12212 are located at opposite ends of the 5 main rods 11, and the end of the lower composite rod 12212 away from the main rod 11 is fixedly connected to the support base 2. The length of the antenna mast 1 ranges from 5 meters to 12 meters, preferably 6.5 meters. The conductive cable in the upper composite mast 12112 is wound 7 times around the corresponding connecting mast 1231, and the conductive cable in the lower composite mast 12212 is wound 30 times around the corresponding connecting mast 1231. The connecting rods in the upper composite rod 12112 and the lower composite rod 12212 have the same diameter when the corresponding conductive cable is wound around the fine part, and their diameter ranges from 20 mm to 25 mm, preferably 22 mm.

[0034] In a further optional embodiment of this example, the outer diameter of the balun 3 ranges from 45 mm to 50 mm, the inner diameter of the balun 3 ranges from 25 mm to 30 mm, and the thickness of the balun 3 ranges from 12 mm to 18 mm. In this embodiment, the outer diameter of the balun 3 is 48 mm, the inner diameter of the balun 3 is 28 mm, and the thickness of the balun 3 is 15 mm; the central axis of the balun 3 coincides with the central axis of the antenna mast 1.

[0035] In a further optional embodiment of this embodiment, a second cable is also wound around the balun 3, with the two ends of the second cable short-circuited.

[0036] In a further optional embodiment of this example, the shortwave whip antenna device further includes a waterproof cover 5. The waterproof cover 5 encloses the balun 3 inside the support base, and is located above and fixedly connected to the support base 2. One end of the antenna rod 1 is fixedly connected to the support base 2 via the waterproof cover 5. One end of the signal input interface 4 is inserted horizontally into the support base 2 and electrically connected to the first cable.

[0037] In a further optional embodiment of this embodiment, the shortwave whip antenna device further includes a heat sink 6 and a base 7.

[0038] The base 7 is fixedly disposed below the heat sink 6 and is fixedly connected to the heat sink 6 by screws. The support 2 is fixedly disposed above the heat sink 6, and the antenna mast 1 is located on the side of the support 2 opposite to the heat sink 6. The balun 3 is fixed to the heat sink 6 using hot melt adhesive.

[0039] In a further optional embodiment of this embodiment, a third cable is also wound around the balun 3, one end of which is electrically connected to a power device (not shown in the figure) on the heat sink 6, and the other end of which is grounded.

[0040] It should be noted that the core diameter of the first, second, and third cables is 1 mm. On the balun 3, the first, second, and third cables are wound around the same magnetic core at different intervals. Each cable generates its own magnetic flux, and the three sets of magnetic fluxes couple with each other in the same space, ultimately producing the impedance transformation function of the transformer. The spacing between the first, second, and third cables wound around the magnetic core ranges from 1 mm to 10 mm, but is not limited to this. This embodiment does not specifically limit the spacing between the first, second, and third cables wound around the magnetic core.

[0041] In a further optional embodiment of this invention, the shortwave whip antenna device further includes a connecting flange 8. The connecting flange 8 is located above the waterproof cover 5 and is fixedly connected to the waterproof cover 5 by screws, and the bottom end of the lower composite rod 12212 is welded to the top of the connecting flange 8.

[0042] The shortwave whip antenna device provided in this embodiment is small in size, easy to install, and more suitable for concealed installation. It has good signal coverage, can achieve low standing wave ratio (VSWR) across the entire frequency band, and has a wide range of applications. Simultaneously, the shortwave whip antenna device achieves impedance matching through the balun 3, where the impedance transformation can be set as needed. The connection between the balun 3 and the antenna mast 1 enables the shortwave whip antenna device to have good VSWR and radiation characteristics over a wide range, achieving broadband antenna characteristics and extending the bandwidth of the antenna mast 1. It can achieve full shortwave frequency band coverage, specifically within the shortwave range of 3MHz-30MHz, giving the shortwave whip antenna device good antenna radiation performance indicators and achieving good matching effects.

[0043] In the description of this specification, the references to terms such as "some embodiments," "other embodiments," "ideal embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example that are included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A short wave whip antenna device, characterized in that The shortwave whip antenna device includes: an antenna mast and a support base; One end of the antenna mast is fixedly connected to the support base. A balun and a signal input interface are installed on the support base. A first cable is wound around the balun. One end of the first cable is electrically connected to the signal input interface, and the other end of the first cable is electrically connected to one end of the antenna mast. The antenna mast includes: multiple main rod sections and at least one composite rod section, wherein both the main rod sections and the composite rod section are made of conductive materials; The composite rod includes a connecting rod and a conductive cable. Both the main rod and the connecting rod are made of conductive materials. The end of the main rod is connected to the end of the connecting rod to form a whip-like structure of the antenna rod. The conductive cable is spirally wound around the side wall of the connecting rod, and both ends of the conductive cable are electrically connected to the connecting rod.

2. The short wave whip antenna device according to claim 1, characterized in that The radii of the multiple main poles and at least one composite pole gradually decrease from bottom to top, and adjacent main poles and composite poles, as well as adjacent main poles and main poles, slide and connect in the vertical direction to achieve a telescopic antenna pole. The composite rod also includes: a sleeve; The sleeve is fitted around the periphery of the conductive cable and connected to the connecting rod.

3. The short wave whip antenna device according to claim 2, characterized in that The sleeve is made of insulating material.

4. The short wave whip antenna device according to any one of claims 1 to 3, characterized in that The multi-section composite rod includes: an upper composite rod and a lower composite rod; The upper composite rod and the lower composite rod are each connected to at least one of the main rods.

5. The short wave whip antenna device according to claim 4, characterized in that The upper composite rod is located on the side of the lower composite rod away from the support base; The number of turns of the conductive cable in the upper composite rod around the corresponding connecting rod is less than the number of turns of the conductive cable in the lower composite rod around the corresponding connecting rod.

6. The short wave whip antenna device according to claim 4, characterized in that The main rod has 5 sections, and the 5 main rods are connected end to end in sequence. The upper composite rod and the lower composite rod are located at opposite ends of the 5 main rods, and the end of the lower composite rod away from the main rod is fixedly connected to the support base. The length of the antenna mast ranges from 5 meters to 12 meters. The number of turns of the conductive cable in the upper composite mast body around the corresponding connecting rod body is 7, and the number of turns of the conductive cable in the lower composite mast body around the corresponding connecting rod body is 30. The diameter of the connecting rod in both the upper and lower composite rods at the location where the corresponding conductive cable is wound is between 20 mm and 25 mm.

7. The short wave whip antenna device according to claim 6, characterized in that The outer diameter of the balun ranges from 45 mm to 50 mm, the inner diameter ranges from 25 mm to 30 mm, and the thickness ranges from 12 mm to 18 mm.

8. The short wave whip antenna device according to claim 1, characterized in that A second cable is also wrapped around the balun, with its two ends shorted together.

9. The short wave whip antenna device according to claim 1, characterized in that The shortwave whip antenna device also includes: a waterproof cover; The waterproof cover encloses the balun inside the support base. The waterproof cover is located above the support base and is fixedly connected to the support base. One end of the antenna mast is fixedly connected to the support base through the waterproof cover.

10. The short wave whip antenna device according to claim 1, characterized in that The shortwave whip antenna device also includes: a heat sink and a base; The base is fixedly installed below the heat sink, the support is fixedly installed above the heat sink, and the antenna mast is located on the side of the support that is away from the heat sink.

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