KR101148993B1 - Multiband antenna appratus - Google Patents

Abstract

The present invention relates to a multiband antenna device capable of receiving a multiband signal.

Description

Multiband Antenna Unit {MULTIBAND ANTENNA APPRATUS}

The present invention relates to a multiband antenna device capable of receiving a multiband signal.

 Microstrip antennas have a dielectric structure on a thin ground conductor plate and a conductor strip printed on it, which is popular in aerospace, military, and mobile communication.

These microstrip antennas are lightweight, ultra-compact and thin, and are being used in a variety of applications due to low cost and ease of installation by mass production using printed circuit manufacturing methods. .

In addition, the microstrip antenna can simultaneously design and fabricate various types of feed circuits for controlling the excitation state of the antenna element and each element on the microstrip substrate to perform beam shape adjustment and tracking without mechanical movement. can do. In particular, since the circular polarization characteristic required for receiving a broadcast signal can be manufactured on a single substrate without a separate deflector, it is more efficient.

On the other hand, in the conventional multi-band antenna device that implements the multi-band characteristics, the above-described microstrip antenna is stacked, due to this, the antenna size is increased, the manufacturing process and assembly is complicated.

In this background, the present invention is to provide a multi-band antenna device capable of receiving a multi-band signal without using a plurality of radiation patches.

In order to achieve the above object, in one aspect, the present invention, the first dielectric; A first ground conductor installed on one surface of the first dielectric; And a radiation patch provided on the other surface of the first dielectric and having a slot formed therein.

As described above, according to the present invention, there is an effect of providing a multi-band antenna device capable of receiving a multi-band signal by using one radiation patch.

In addition, according to the present invention, it is easy to design and manufacture a multiband antenna device, and the size of the multiband antenna device can be reduced.

1 is an exploded view of a multi-band antenna device according to an embodiment of the present invention.
2 is a view showing a patch antenna included in a multi-band antenna device according to an embodiment of the present invention.
3 is a diagram illustrating a coupler board included in a multi-band antenna device according to an embodiment of the present invention.
4 is a side view of a multi-band antenna device according to an embodiment of the present invention.
5 is a diagram illustrating various embodiments of a multi-band antenna device according to an embodiment of the present invention.

The multi-band antenna device disclosed in the present specification includes a first dielectric, a first ground conductor provided on one surface of the first dielectric, a radiation patch formed on the other surface of the first dielectric, and a slot formed therein.

In each of the radiation patch, the first dielectric and the first ground conductor included in the multiband antenna device, one or a plurality of feeding pins may be inserted through the radiation patch, the first dielectric and the first ground conductor. One or a plurality of feeding points may be formed.

Each of the one or a plurality of feed points formed in common in the radiation patch, the first dielectric, and the first ground conductor may be formed at a distance from the center of each of the radiation patch, the first dielectric, and the first ground conductor. .

In addition, a DC ground having a predetermined diameter may be commonly drilled in the center of each of the radiation patch, the first dielectric, and the first ground conductor, for lightening protection.

If a plurality of feed points are commonly formed in each of the radiation patch, the first dielectric, and the first ground conductor, each of the positions where the plurality of feed points are formed may form an angle of 90 degrees to each other.

As such, when a plurality of feed points are formed, a diameter of a predetermined diameter is formed at the center of each of the radiation patch, the first dielectric, and the first ground conductor in order to improve degradation of isolation characteristics between the plurality of feed points and to provide lightening protection. DC ground is commonly drilled and can be connected to the antenna fixture.

For example, when two feed points formed in common in each of the radiation patch, the first dielectric, and the first ground conductor are formed, the multi-band antenna device may be a multi-band antenna device using a two-feed technique.

In a general multiband antenna device, a plurality of radiation patches are stacked in order to receive a multiband signal.

However, the multiband antenna device described herein is capable of receiving a multiband signal even with only one radiation patch. This is made possible by forming slots in one radiation patch.

The multi-band antenna device disclosed herein, for example, the frequency characteristics of the Global Positioning System (GPS: LPS) L1, the frequency characteristics of the GPS L2, Global Navigation Satellite System (GLONASS: GLObal) NAvigation Satellite System, hereinafter referred to as "GLONASS") It is possible to receive a multi-band signal having two or more frequency characteristics among the frequency characteristics of the L1, the frequency characteristics of the Galileo system (Eali).

Thus, forming a slot in the radiation patch, in addition to the effect of reducing the number of radiation patches for receiving a multi-band signal, it is easy to design and manufacture a multi-band antenna device and to reduce the size of the multi-band antenna device. Another effect can be obtained.

The slot formed in the radiation patch may be a groove recessed in a predetermined shape in the radiation patch.

The patch antenna may be any shape such as a square shape or a circle shape, and the shape of the slot formed in the radiation patch having any shape as described above may include the shape of the radiation patch. That is, the slot formed in the radiation patch may be similarly formed according to the shape of the radiation patch.

The shape of the slot formed in the radiation patch may include a closed curve shape or a rectangular shape, such as circular, oval.

For example, when the radiation patch has a square shape, the slot formed in the radiation patch may have a square shape including a square shape that is a shape of the radiation patch.

The radiation patch may be further formed with one or more additional slots. Here, the shape of the additional slot may include one or more of a straight shape, a curved shape, a closed curve shape, a square shape, and the like.

On the other hand, the multi-band antenna device disclosed herein, one or more formed in the radiation patch, in order to implement the circular polarization characteristics, that is, to receive the circularly polarized signal (for example, preferred member polarization, left member polarization, etc.) It may further include a coupler board connected to the feeding point of the coupler, the coupler board may include a 90 degree coupler.

The coupler board includes a second ground conductor, a second ground conductor, and the like.

When a patch antenna including a radiation patch, a first dielectric, a first ground conductor, and the like is referred to as a patch antenna, the multiband antenna device has a structure in which a patch antenna and a coupler board are stacked. In order to stack the patch antenna and the coupler board, the first ground conductor of the patch antenna and the second ground conductor of the coupler board may be stacked in contact with each other.

The coupler board and the patch antenna are connected to each of the second dielectric and the second ground conductor included in the coupler board by forming one or a plurality of feed points through which one or more feed pins can be inserted.

Meanwhile, the multi-band antenna device may further include a low noise amplifier (LNA) board which removes noise by receiving the circularly polarized signal received through the coupler board.

The multiband antenna device may be a microstrip antenna device having a first dielectric on a thin first grounded conductor and printing a conductor strip (radiation patch) thereon.

Such a multi-band antenna device can be used for aerospace, military and mobile communications.

According to the multi-band antenna device disclosed in the present specification described above, due to the structure in which a slot is formed in one radiation patch, the antenna size can be reduced, and the characteristics of the antenna pattern and the axial ratio can be formed symmetrically. There is an advantage.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In addition, in describing the component of this invention, terms, such as 1st, 2nd, A, B, (a), (b), can be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. If a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected to or connected to that other component, but there may be another configuration between each component. It is to be understood that the elements may be "connected", "coupled" or "connected".

The drawings to be described below will be illustrated on the assumption that the shape of the radiation patch is a square shape, the shape of the slot formed in the radiation patch is a square shape, and two feeding points are provided.

1 is an exploded view of a multi-band antenna device according to an embodiment of the present invention.

As exemplarily shown in FIG. 1, a multi-band antenna device according to an embodiment of the present invention includes a patch including a radiation patch 10, a first dielectric 11, a first ground conductor 12, and the like. The antenna 1 and the coupler board 2 including the second ground conductor 32, the second dielectric 31 and the like are stacked.

As shown in FIG. 1, the radiation patch 10 has a slot 13 having a regular shape.

Due to the slot 13 formed in the radiation patch 10, the multi-band antenna device is capable of receiving a multi-band signal.

For example, if a multi-band antenna device is used for GPS L1, GPS L2, GLONASS, Galileo signal reception, the radiation patch 10 acts as a radio patch of the GPS L1, Galileo E1, GLONASS L1 frequency characteristics, slots 13 may serve as a radiation patch of the GPS L2 frequency characteristic.

Referring to FIG. 1, a multi-band antenna device according to an embodiment of the present invention includes a patch antenna 1 including a radiation patch 10, a first dielectric 11, a first ground conductor 12, and the like. In the coupler board 2 including the second ground conductor 32, the second dielectric 31, and the like, two feed points F1, F2, and 101 are formed at a 90 degree angle.

A feeding pin 110 is inserted into the two feeding points 101 to connect the patch antenna 1 and the coupler board 2 to each other.

Referring to FIG. 1, in order to improve degradation of isolation characteristics between two feed points F1, F2, and 101, a lightening protection having a predetermined diameter may be provided at the center of each of the patch antenna 1 and the coupler board 2. DC Ground (100) for Lightning Protection is commonly drilled and can be connected to the antenna fixture.

Hereinafter, the structure of the patch antenna 1 will be described in more detail with reference to FIG. 2, the structure of the coupler board 2 will be described in more detail with reference to FIG. 3, and the patch antenna 1 will be described with reference to FIG. 4. ) And the structure of the coupler board 2 are stacked.

2 is a view showing a patch antenna 1 included in a multi-band antenna device according to an embodiment of the present invention.

2 is a diagram showing the structure of the patch antenna 1 including the radiation patch 10, the first dielectric 11 and the first ground conductor 12 divided into front, back and side surfaces.

Referring to FIG. 2, the patch antenna 1 includes a first dielectric 11 having a constant thickness, a first ground conductor 12 made of a conductor on one surface (bottom surface) of the first dielectric 11, and a first dielectric 11. The other surface (upper surface) of the dielectric 11 has a structure composed of a radiation patch 10 made of a conductor.

Referring to Fig. 2, a slot 13 having a square shape is formed in a radiation patch 10 having a width of W and a length of L.

Due to this slot 13, the patch antenna 1 may be a multiband patch antenna having frequency characteristics of GPS L1, Galileo E1, GPS L2 and GLONASS L1.

As described above, when the patch antenna 1 is a multi-band patch antenna having the frequency characteristics of GPS L1, Galileo E1, GPS L2 and GLONASS L1, the width and length of the radiation patch 10 and the width of the slot 13 By adjusting the length, the resonance frequencies of the GPS L1, Galileo E1, GPS L2 and GLONASS L1 can be determined.

In addition, the impedance characteristics and the isolation characteristics may be adjusted by adjusting a distance away from the center or the position at which the two feed points 101 are formed.

That is, by designing the patch antenna 1 by appropriately adjusting the width and length of the radiation patch 10, the width and length of the slot 13, the position and distance of the feed point 101, the desired resonance frequency, impedance Characteristics and isolation characteristics can be obtained.

3 is a diagram illustrating a coupler board 2 included in a multi-band antenna device according to an embodiment of the present invention.

3 is a view showing the front, back and side of the coupler board 2 stacked with the patch antenna 1 in the multi-band antenna device according to an embodiment of the present invention.

Referring to FIG. 3, the front side of the coupler board 2 is composed of the second dielectric 31, and the back side is composed of the second ground conductor 32. Here, the second ground conductor 32 is stacked in contact with the first ground conductor 31 of the patch antenna 1.

Referring to FIG. 3, the coupler board 2 is connected to two feed points 101 to receive circular polarization (eg, preferred member polarization (RHCP), etc.). In this case, a circular polarization signal may be obtained, and the circular polarization signal thus obtained may be input to a low noise amplifier board (not shown).

In the multi-band antenna device according to an embodiment of the present invention, the size of the coupler board 2 and the low noise amplifier board (not shown) is increased by using two feed points 101 at the same position as the patch antenna 1. You can also get the effect of shrinking.

Referring to FIGS. 1 and 3, the two feed points 101 may include a radiation patch 10, a first dielectric 11, a first ground conductor 12, a second ground conductor 32, and a second dielectric. The hole penetrates through the 31, and by inserting the feed pin 110 into each of these two feed points 101, the patch antenna 1, the coupler board 2 and the low noise amplifier board (not shown) can be connected. have.

As shown in FIG. 3, the coupler board 2 connected to the patch antenna 1 through the feed point 101 may include a 90 degree coupler 300 to implement circular polarization characteristics.

4 is a side view of a multi-band antenna device according to an embodiment of the present invention.

FIG. 4 is a side view illustrating a stacked structure of a patch antenna 1 and a coupler board 2 having the above-described structure in a multi-band antenna device according to an embodiment of the present invention.

Referring to FIG. 4, the second dielectric 31 and the second ground conductor 32 of the coupler board 2, and the first ground conductor 12 and the first dielectric 11 of the patch antenna 1 thereon. And it is stacked in the order of the radiation patch (10).

Another ground conductor (not shown) may be stacked below the second dielectric 31 of the coupler board 2.

5 is a diagram illustrating various embodiments of a multi-band antenna device according to an embodiment of the present invention.

As shown in FIG. 5, the upper surface (the front of the patch antenna 1) in the multi-band antenna device may be implemented in various shapes.

The shape of the radiation patch 10 may be a quadrangular shape as shown in Figs. 5A, 5C, 5D, and 5E, or may be circular as shown in Fig. 5B.

Further, as shown in (a), (c), (d) and (e) of FIG. 5, in addition to the slot 13 having a regular shape, additional slots 501, 502, 503, 504, 505, 506, 507, 508, 509, 510, 511, 512, 513, 514 may be further formed.

In addition, a design such as adjusting the shape, width, length, thickness, position, etc. of the slot 13, further forming additional slots, adjusting the shape, width, length, thickness, position, etc. of the additional slots to be formed, etc. By changing, the characteristics of the multibands can be adjusted.

In addition, regardless of the pattern of the top surface of the multi-band antenna device may be implemented to overlap a plurality of radiation patches, or to receive a signal using one feed pin.

In the above description, all elements constituting the embodiments of the present invention are described as being combined or operating in combination, but the present invention is not necessarily limited to the embodiments. In other words, within the scope of the present invention, all of the components may be selectively operated in combination with one or more. In addition, although all of the components may be implemented in one independent hardware, each or all of the components may be selectively combined to perform some or all functions combined in one or a plurality of hardware. It may be implemented as a computer program having a. Codes and code segments constituting the computer program may be easily inferred by those skilled in the art. Such a computer program may be stored in a computer readable storage medium and read and executed by a computer, thereby implementing embodiments of the present invention. The storage medium of the computer program may include a magnetic recording medium, an optical recording medium, a carrier wave medium, and the like.

It is also to be understood that the terms such as " comprises, "" comprising," or "having ", as used herein, mean that a component can be implanted unless specifically stated to the contrary. But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Terms commonly used, such as terms defined in a dictionary, should be interpreted to coincide with the contextual meaning of the related art, and shall not be construed in an ideal or excessively formal sense unless explicitly defined in the present invention.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

Claims (9)

A first dielectric;
A first ground conductor installed on one surface of the first dielectric; And
Including a radiation patch installed on the other surface of the first dielectric and the slot is formed,
In each of the radiation patch, the first dielectric and the first ground conductor, one or a plurality of feed pins may be inserted through the radiation patch, the first dielectric and the first ground conductor. Feed point is formed,
Each of the one or more feed points is formed at a position at a distance from a center of each of the radiation patch, the first dielectric, and the first ground conductor,
When the plurality of feed points are formed, each of the positions at which the plurality of feed points are formed, forms an angle of 90 degrees to each other,
In order to receive a circularly polarized signal, a coupler board including a second ground conductor connected to the one or more feed points formed in the radiation patch and stacked in contact with the first ground conductor, and a second dielectric. Multiband antenna device comprising a. The method of claim 1,
The slot formed in the radiation patch is a multi-band antenna device, characterized in that it comprises a closed curve shape or a rectangular shape. The method of claim 1,
The shape of the slot formed in the radiation patch comprises a shape of the radiation patch multi-band antenna device. The method of claim 1,
The radiating patch is a multi-band antenna device, characterized in that the slot is formed in a regular shape. The method of claim 1,
The radiation patch is a multi-band antenna device characterized in that one or more additional slots are further formed. delete delete The method of claim 1,
And a low noise amplifier board receiving the circularly polarized signal received through the coupler board to remove noise. The method of claim 1,
Among the frequency characteristics of the Global Positioning System (GPS) L1, the frequency characteristics of the Global Positioning System L2, the frequency characteristics of the GLObal NAvigation Satellite System (GLONASS) L1, and the frequency characteristics of the Galileo System E1, A multiband antenna device, characterized in that for receiving a multiband signal of two or more frequency characteristics.

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