CN214957300U - Conformal direction-finding antenna of shortwave - Google Patents

Abstract

A short wave conformal direction-finding antenna relates to the technical field of antennas, the utility model comprises an antenna housing and an antenna component, the antenna assembly comprises an output cavity matched with the size of the antenna housing, an output socket is arranged at the lower end of the output cavity, the upper end of the output cavity is detachably connected with a middle lining plate through a locking nut, the middle lining plate is provided with a ferrite magnetic core, the ferrite magnetic core is provided with a coil antenna, the middle lining plate is also connected with a metal pressing block through a locking nut, the middle position of the metal pressing block is provided with a slot for receiving signals, the coil antenna is positioned at the projection position of the metal pressing block on the ferrite magnetic core, the size of the antenna is greatly reduced through the arrangement of the ferrite magnetic core, through the setting of well welt, can effectual shielding well welt another side signal realizes the antireflection.

Description

Conformal direction-finding antenna of shortwave

Technical Field

The utility model relates to the technical field of antennas, concretely relates to conformal direction-finding antenna of shortwave.

Background

At present, short-wave direction-finding antennas have a large volume and a large required field due to low working frequency and long wavelength. The short wave direction finding antenna is classified into a crossed loop combined direction finding antenna, an active whip antenna, a Watson watt ferrite-based direction finding antenna and a segmented load direction finding antenna, and the short wave direction finding antenna is large in size or long in length. In addition, the antennas have high requirements on the direction-finding field, and reflectors need to be arranged in the range of 2 lambda max around the antennas. Because of the large size of these antennas, some antennas occupy a large area, and especially cannot be used on ships with many reflectors. On some platforms that require conformal direction finding requirements, these conventional antennas are not suitable. Therefore, the traditional short wave direction-finding antenna is not suitable for being used on ships and conformal platforms, and in order to solve the technical problems, the invention provides the short wave conformal direction-finding antenna.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: for solving the technical problem who proposes in the background art, the utility model provides a conformal direction-finding antenna of shortwave.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

the utility model provides a conformal direction-finding antenna of shortwave, includes antenna house and antenna module, the antenna module includes the output cavity who matches with the antenna house size, the lower extreme of output cavity is equipped with the output socket, the upper end of output cavity is connected with well welt through lock nut detachable, be equipped with the ferrite core on the well welt, be equipped with the coil antenna on the ferrite core, still be connected with metal briquetting through lock nut on the well welt, metal briquetting's intermediate position is equipped with the crack that is used for received signal, the coil antenna is located the projection department of metal briquetting on the ferrite core.

Furthermore, the ferrite core is a cuboid, a downward groove is formed in the middle of the ferrite core, and the coil antenna is wound on the groove.

Furthermore, the coil antenna adopts a phi 0.5 enameled wire and is wound for 6 turns at an interval of 8 mm.

Furthermore, the left end and the right end of the middle lining plate are both limiting plates, and the ferrite core is located between the two limiting plates at the left end and the right end.

Furthermore, the limiting plate is n-shaped, and the openings of the limiting blocks at the left end and the right end of the middle lining plate face the ferrite core.

Further, the antenna housing is made of a high-wave-transmission material epoxy resin glass fiber cloth composite material.

Further, the ferrite magnetic core is made of a high-frequency nickel-zinc-oxygen material.

The utility model has the advantages that:

the utility model comprises an antenna housing and an antenna assembly, wherein the antenna assembly comprises an output cavity matched with the size of the antenna housing, the lower end of the output cavity is provided with an output socket, the upper end of the output cavity is detachably connected with a middle lining plate through a locking nut, the middle lining plate is provided with a ferrite magnetic core, the ferrite magnetic core is provided with a coil antenna, the middle lining plate is also connected with a metal pressing block through the locking nut, the middle position of the metal pressing block is provided with a slit for receiving signals, the coil antenna is positioned at the projection position of the metal pressing block on the ferrite magnetic core, the volume of the antenna can be effectively reduced through the arrangement of the ferrite magnetic core, a metal box body is formed by the metal pressing block and the middle lining plate, the slit is arranged in the middle of the metal pressing block, the realization of receiving can be effectively realized, and the displacement of the ferrite magnetic core can be effectively controlled to limit the left and right movement through the arrangement of a limiting block, through the arrangement of the middle lining plate for installing the antenna assembly, signals on the other surface of the middle lining plate can be effectively shielded, and the anti-reflection function is realized.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the antenna assembly of the present invention;

fig. 3 is a schematic structural diagram of the ferrite core of the present invention;

FIG. 4 is a schematic view of the structure of the middle lining board of the present invention;

fig. 5 is a schematic diagram of the structure of the output cavity of the present invention;

fig. 6 is a schematic view of the structure of the radome of the present invention;

FIG. 7 is a schematic structural diagram of the external view of the present invention;

fig. 8 is a schematic view of the structure of the present invention mounted on a ship hull;

reference numerals: the antenna comprises a 1-antenna housing, a 2-ferrite magnetic core, a 3-coil antenna, a 4-metal pressing block, a 5-limiting block, a 6-middle lining plate, a 7-output cavity and an 8-output socket.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

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, it need not be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "up", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are conventionally placed when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

Example 1

As shown in fig. 1-8, the conformal direction-finding antenna of shortwave, including antenna house 1 and antenna module, the antenna module includes the output cavity 7 that matches with 1 size of antenna house, the lower extreme of output cavity 7 is equipped with output socket 8, the upper end of output cavity 7 is connected with well welt 6 through lock nut detachable, be equipped with ferrite core 2 on the well welt 6, be equipped with coil antenna 3 on the ferrite core 2, still be connected with metal briquetting 4 through lock nut on the well welt 6, metal briquetting 4's intermediate position is equipped with the seam that is used for received signal, the coiling direction of seam perpendicular to coil antenna 3, coil antenna 3 is located metal briquetting 4 projection department on ferrite core 2, the utility model discloses the size of the antenna that makes is L xW H350 mm x 65mm x 100 mm.

Preferably, the ferrite core 2 is a rectangular parallelepiped, a downward groove is formed in the middle of the ferrite core 2, and the coil antenna 3 is wound on the groove.

Preferably, the coil antenna 3 is made of a phi 0.5 enameled wire and is wound for 6 turns at an interval of 8 mm.

Preferably, the left end and the right end of the middle lining plate 6 are both limiting plates, and the ferrite core 2 is positioned between the two limiting plates at the left end and the right end.

Preferably, the limiting plates are n-shaped, and the openings of the limiting blocks 5 at the left end and the right end of the middle lining plate 6 face the ferrite core 2.

Preferably, the antenna housing 1 is made of a high-wave-transmission material epoxy resin glass fiber cloth composite material, and the antenna housing 1 is made of an epoxy resin glass fiber cloth composite material, so that the antenna housing has good wave-transmission performance and plays a role in waterproof sealing wave-transmission.

Preferably, the ferrite core 2 is made of a high frequency nickel zinc oxide material.

Preferably, the middle lining plate 6 and the output cavity 7 are both made of metal materials, and the middle lining plate 6 and the output cavity 7 are made of metal materials, so that incoming wave signals on the other surface can be shielded, and secondary reflection signals can be just inhibited.

The utility model discloses a theory of operation and beneficial effect as follows:

the utility model discloses a conformal direction-finding antenna of shortwave has the advantage that the size is small, because the coil antenna 3 is coiled to ingenious application ferrite core 2 to reduce the antenna size; the antenna has higher amplitude phase consistency and meets the requirement of a short-wave direction-finding system.

The utility model discloses well radio wave signal sees through antenna house 1, receives the back through ferrite core 2, coil antenna 3 and exports by outlet socket 8. The signals from the output direction of the antenna are shielded and isolated by the output cavity 7 and the middle lining plate 6, and the signals reaching the antenna are very small, so that the reverse direction resisting signals of the antenna are strong, and the output can be positioned in the direction of reflected waves when the antenna is used, thereby achieving the purpose of resisting secondary reflection.

By adopting the antenna with the back plate, the received signal of secondary reflection is smaller by aligning the directional diagram zero point of the antenna with the secondary radiation direction; the maximum direction of the antenna directional diagram is aligned to the direction of the received signal, so that the monitoring signal is received strongly, and the aim of resisting secondary radiation is fulfilled.

The utility model discloses can install on the ship or some vehicles, successfully solve on the ship or the vehicle problem of shortwave direction finding, compare with the traditional direction finding antenna of installation and have great advantage. The distributed antenna array is adopted, so that the requirement on the field is reduced, and the distributed antenna has the advantages that the traditional antenna cannot compare with the traditional antenna; the antenna can be conformal with the mounting platform, through reasonable arranging, realizes short wave antenna's all-round direction finding, and concrete arrangement mode is: the receiving surface is aligned to the incoming wave direction, the zero-depth surface is aligned to the secondary reflecting surface or the ship body surface, the ship body appearance can be embedded by arranging all around, the directional diagram of the short wave conformal direction-finding antenna in the length direction is in an 8 shape, so that the horizontal all-dimensional direction finding is realized, the problem of influencing the appearance of the platform is solved by the conformal characteristics, the camouflage characteristic is also realized, the modern technology development direction is met, and the advanced performance and the practicability are higher.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.

Claims (7)

1. The utility model provides a conformal direction-finding antenna of shortwave, its characterized in that, includes antenna house (1) and antenna module, the antenna module includes output cavity (7) with antenna house (1) size matching, the lower extreme of output cavity (7) is equipped with output socket (8), the upper end of output cavity (7) is connected with well welt (6) through lock nut detachable, be equipped with ferrite core (2) on well welt (6), be equipped with coil antenna (3) on ferrite core (2), still be connected with metal briquetting (4) through lock nut on well welt (6), the intermediate position of metal briquetting (4) is equipped with the crack that is used for received signal, coil antenna (3) are located metal briquetting (4) projection department on ferrite core (2).

2. Short wave conformal direction finding antenna according to claim 1, characterized in that the ferrite core (2) is a cuboid, a downward groove is provided in the middle of the ferrite core (2), and the coil antenna (3) is wound on the groove.

3. A short wave conformal direction-finding antenna according to any of claims 1-2, characterized in that the coil antenna (3) is implemented by using Φ 0.5 enameled wire and winding 6 turns at 8mm interval.

4. A short wave conformal direction-finding antenna according to any of claims 1-2 characterized in that the left and right ends of the mid-backing plate (6) are both limiting plates, the ferrite core (2) being located between the two limiting plates of the left and right ends.

5. The short wave conformal direction-finding antenna according to claim 4, wherein the limiting plate is n-shaped, and the openings of the limiting blocks (5) at the left and right ends of the middle lining plate (6) face the ferrite core (2).

6. Short wave conformal direction-finding antenna according to any of claims 1-2, characterized in that the radome (1) is made of epoxy resin glass fiber cloth composite material, which is a high wave-transparent material.

7. Short wave conformal direction-finding antenna according to any of claims 1-2, characterized in that the ferrite core (2) is made of high frequency nickel zinc oxide material.

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