KR100399619B1 - Directivity antenna for suppressing sideband in side direction - Google Patents

Abstract

The present invention is directed to a directional sector antenna installed to cover various directions in performing a mobile communication (fixed communication) service including cellular, PCS, IMT-2000, and the like. Licensed frequency, allowing radio waves to be radiated without mutual interference when attaching radio absorbers, or attaching radio radiators in parallel, or when combining at least one directional sector antenna in multiple directions using planar microstrip antennas The present invention relates to a multilateral sideband suppression type directional antenna that allows more subscribers to perform simultaneous communication without noise in the same place with bandwidth.

The present invention is a metal reflector plate having a wider front than the rear and a radio wave radiator is attached to the inner rear of the metal reflector plate, the transceiver is connected to the radio wave copier to radiate lateral side waves, by the radio wave radiator A wave absorber or a double wave radiator for absorbing sidebands radiated to both sides of the corners and allowing the sidebands to radiate only in the corners is attached to the metal reflector.

Description

Multi-lateral sideband suppression type directional antenna {DIRECTIVITY ANTENNA FOR SUPPRESSING SIDEBAND IN SIDE DIRECTION}

The present invention relates to a multilateral sideband suppression type directional antenna.

More specifically, in a directional sector antenna installed to cover various directions in performing a mobile communication (fixed communication) service including cellular, PCS, IMT-2000, etc., the inner side of the metal reflector of the directional sector antenna By attaching a radio absorber or dielectric, or by connecting two or more radio radiators in two layers, the radio waves can be radiated without mutual interference when combining at least one directional sector antenna in multiple directions, allowing the The present invention relates to a lateral sideband suppression type directional antenna that enables more subscribers to perform simultaneous communication without noise.

In general, as the range of human activities expands, it is necessary to transmit and receive a variety of broadband information while moving, and accordingly, various wireless communication services including mobile communication systems are rapidly increasing. Development of terminal devices and development of small, light weight, thin base station and repeater antenna devices with high performance and high performance characteristics are important elements for developing and using various wireless communication systems such as IMT-2000, the next generation mobile communication system as well as the current mobile communication. It is attracting attention as.

At present, Korea is an advanced telecommunication advanced country with nearly 20 million subscribers due to the rapid increase in mobile telecommunications subscribers due to the commercialization of PCS.

In particular, directional sector antennas can be oriented in multiple directions, namely 2, 3, 4, 5, to accommodate a large number of subscribers in the same location with licensed frequency bandwidth in current mobile phone (fixed communication) services such as cellular phones, PCS and IMT-2000. In the case of serving a large number of sectors in six directions, for example, it can accommodate 2, 3, 4, 5, 6 times more subscribers than a single forward antenna.

However, in the antenna installation method as described above, as shown in FIG. 1, since the sideband radiation of the sector antenna is large, the radio waves are overlapped to both sector areas, resulting in interference, resulting in poor call quality.

That is, as shown in FIG. 1A, when the radio wave radiator 1 'is installed in the metal reflector plate 2' in the corner (angle) shape, the radio wave radiator is connected to the radio wave input connector 6 to radiate radio waves. A radio wave radiation pattern (solid line) is obtained.

That is, when setting the service zone in 6 directions, the radio wave should be radiated only in the QP direction as shown in FIG. 1B. Since the metal reflector is made of the metal reflector 2 ', the conventional directional antenna has a desired direction angle. (For example, 60-degree angle in 6-way sector) Not only radio waves are radiated, but also side bands are radiated to adjacent two sectors, and this interference causes communication failure, which can accommodate many subscribers. There is no problem.

The present invention has been made to solve the above problems, the present invention is to perform a mobile communication (fixed communication) services including cellular, PCS, IMT-2000, etc., installed to cover various directions In the sector antenna, a radio wave absorber or a dielectric is attached to the inner side of the metal reflector of the directional sector antenna, or the radio radiator is synthesized in two or more horizontal directions and stacked in a vertical direction to form a directional sector antenna. Multilateral sideband suppression, which allows radios to be radiated to adjacent sectors without mutual interference when combining these antennas in multiple directions, allowing more subscribers to perform simultaneous communication without noise in the same location with a licensed frequency bandwidth The purpose is to provide a type directional antenna.

In one embodiment of the present invention for achieving the above object, a front side of the metal reflector plate formed wider than the rear and a radio wave copier is attached to the inner rear of the metal reflector plate, the radio wave copier is connected to the transceiver side-side wave In the directional antenna that radiates the radio wave absorber, the radio wave absorber for absorbing side bands radiated to both sides of the corners by the radio radiator, and allowing the side bands to radiate radio only in the corners (angles). It is attached to the side, at least one parasitic element is installed in a vertical arrangement at a position corresponding to the radio wave copier, characterized in that to suppress the front radiation and / or lateral radiation.

In addition, in some cases, when the effect of the radio wave absorber is small, instead of the radio wave absorber is attached to the radio duplex in the horizontal direction, characterized in that to suppress the side wave generated in the antenna by interaction.

1 is a view showing a plan view of an antenna according to the prior art,

1A is a plan view of an antenna to which a corner (angle) metal reflector is attached;

Figure 1b is a radio wave radiation pattern diagram of the antenna shown in Figure 1a,

2 is a configuration diagram of a multilateral sideband suppression type directional antenna according to the present invention;

2A is a stereoscopic view of a copier dipole antenna,

FIG. 2B is a front view of the copier dipole antenna shown in FIG. 2A;

Figure 2c is another embodiment of Figure 2b,

2d is a stereoscopic view of a copier microstrip antenna,

2E is a plan view of a copier dipole antenna,

2f is a plan view of a copier microstrip antenna,

Figure 2g is another embodiment of Figure 2f,

3 is a view for explaining a state in which the multi-directional sideband suppression type directional antenna to which the present invention is applied in various directions,

3A is a stereoscopic view of a lateral sideband suppression type directional antenna;

3b is a plan view of an antenna provided with multilateral sideband suppression type directional antennas in four directions;

3C is a plan view of an antenna in which multilateral sideband suppression type directional antennas are installed in six directions;

4 is a view for explaining a plan view and a radio wave pattern diagram of the antenna to which the present invention is applied,

4A is a plan view of a corner antenna (antenna for suppressing side band waves) with a wave absorber;

4B is a front view of the antenna shown in FIG. 4A,

FIG. 4C is a radio wave radiation pattern diagram of the antenna shown in FIG. 4A

4D is a plan view of the antenna attached to the antenna shown in FIG. 4A in four directions;

4E is a radio wave radiation pattern diagram of an antenna applied to FIG. 4D;

4F is a plan view of the antenna attached to the antenna shown in FIG. 4A in six directions;

Figure 4g is a radio wave radiation pattern of the antenna applied to Figure 4f,

5a to 5c are views showing another embodiment of the present invention,

6 is a view for explaining a micro strip (air strip) planar antenna to which the present invention is applied.

6A is a plan view of a microstrip (airstrip) planar antenna,

FIG. 6B is a front view of the antenna shown in FIG. 6A;

6C is a plan view of the antenna with the antenna shown in FIG. 6A attached in six directions;

6D is a plan view of the antenna with the antenna shown in FIG. 6A attached in four directions.

<Explanation of symbols for the main parts of the drawings>

1a: Radio wave radiator for vertical polarization (dipole or microstrip type)

1b: Radio wave radiator for horizontal polarization (dipole or microstrip type)

2: Metal reflector plate (corner type or flat type)

3a: radio wave absorber

3b: dielectric

4: Radom (round or square) for dampproof or snowproof

5: antenna support

6, 6a: Radio wave input / output force connector (for vertical polarization)

6b: Radio wave input / output force connector (for horizontal polarization)

7a: distribution matcher (synthesizer) (vertical polarization)

7b: distribution matching (synthesizer) (horizontal polarization)

8: high frequency transceiver box

10: parasitic element (horizontal or vertical)

These objects, features and advantages of the present invention will be more readily understood by reference to the accompanying drawings and the following detailed description.

2 is a schematic diagram of a multilateral sideband suppression type directional antenna according to the present invention, FIG. 2A is a three-dimensional view of a copier dipole antenna, and FIG. 2B is a front view of a copier-type or microstrip antenna. FIG. 2C is another embodiment of FIG. 2B, FIG. 2D is a three-dimensional view of the copier microstrip antenna, FIG. 2E is a top view of the copier dipole antenna, FIG. 2F is a top view of the copier microstrip antenna, and FIG. 2G is Another embodiment of Figure 2f.

As shown in FIG. 2A, a multilateral sideband suppression type directional antenna implemented by the present invention includes a metal reflector 2 having a front side wider than a rear side, and a radio wave radiator at an inner rear side of the metal reflector 2. (1) is attached, and a radio wave input connector (6) to which a transceiver can be connected is provided at one end of the radio wave copier (1).

In addition, a radio wave absorber 3a for absorbing sidebands radiated to both sides of the corners by the electromagnetic wave radiator 1 and allowing the sidebands to radiate and radiate only in the corners (angles) to the metal reflection plate 2. ) Is attached to the inner side.

At this time, the thickness of the radio wave absorber (3a) is preferably within 30mm.

2B is a front view of the above-described FIG. 2A, in which two or more vertically polarizing copiers 1a are installed in parallel in the horizontal direction, and a horizontal polarizing copier 1b is provided at the bottom thereof. Or two or more are installed, the plurality of stages are installed in the vertical direction as described above, the antenna to which the present invention is applied is formed.

FIG. 2C illustrates another example of FIG. 2B, in which three vertically polarized wave radiators 1a installed in parallel in a horizontal direction (parallel) in a predetermined region are synthesized, and a single wave is installed in a predetermined region. The copier 1b can be provided in parallel in the horizontal direction to form an antenna. The antenna copier is composed of several stages in the vertical direction, and the vertically polarized antennas are resynthesized to feed the vertically polarized transceiver, and the horizontal elements are recombined with the horizontal antenna elements and fed to the horizontally polarized transceiver.

2D is a stereoscopic view of the microstrip antenna as another example of FIG. 2C. The vertically polarized wave radiator 1a and the horizontally polarized wave radiator 1b are integrally formed so that the parasitic elements 10 are arranged in the dielectric 3b so that the vertically polarized wave radiators 6a and the horizontally polarized wave radiators 6b are formed. Power is supplied to the connector.

In addition, in order to increase forward radiation, as shown in FIG. 2F, several parasitic elements 10 may be arranged and installed using the dielectric 3b to achieve the same effect as in FIG. 2D. 2E shows an example in which a vertically polarized wave radiator 1a and a horizontally polarized wave radiator 1b are provided in a corner reflector.

2G illustrates another example of FIG. 2F, instead of arranging and installing the plurality of parasitic elements 10 in the dielectric 3b, the plurality of parasitic elements 10 are provided in the moisture-proof or anti-fog radome 4. By attaching and installing a plurality of radio wave radiators 1a at positions corresponding to the parasitic elements 10, the same effects can be obtained for the same purpose as in FIG. 2F.

On the other hand, by using the single antenna described above, the present invention can implement a multi-directional sectorized multilateral sideband suppression type directional antenna, which is a multi-directional sectorized multilateral sideband suppression type directional antenna (FIG. 3A). 100 ') is coupled in such a manner that the outer surface of the other metal reflecting plate is in contact with the outer surface of the metal reflecting plate 2 to which the radio wave absorber 3a or the dielectric (3b of FIG. By combining a plurality of directional antennas with each other so that radio waves can be radiated without mutual interference for both adjacent sectors thereof.

This multi-directional sectorized multilateral sideband suppression type directional antenna (100 'of FIG. 3A) may be formed concentrically or polygonally.

At this time, the radio wave absorber 3a absorbs all the radio waves radiated in the rearward and lateral directions among the radio waves radiated from the radio wave copier 1, and the radio wave is radiated to the radio wave regions located at both sides by radio wave radiation forwardly. Suppressed to reduce radio interference.

The radio wave absorber 3a may have various shapes, and since the thickness thereof is also thin, within about 30 mm, it is possible to miniaturize the multilateral sideband suppression type directional antenna.

At least one electromagnetic wave radiator 1 is vertically or horizontally arranged inside the metal reflector 2, and the moisture-proof or snowproof radome 4 for protecting the directional antenna having the metal reflector 2 from an external environment is provided. This is coupled to the metal reflector 2.

The moisture-proof or snow-proof radome (4) is an insulator, is composed of a cylindrical or square, the environment-friendly form by painting the outside of the moisture-proof or snow-proof radome (4) using a paint or by drawing a picture on the outside Produced with moisture-proof or snowproof radome (4) having.

In addition, the moisture-proof or anti-raid radome (4) can be fabricated in a square or hexagon in accordance with the antenna attached to the assembly in four or six directions to cover the antenna.

Hereinafter, the present invention will be described with reference to the multi-lateral sideband suppression type directional antenna 100 ′ shown in FIGS. 3 to 5, but this is a copier dipole antenna shown in FIG. 2. 100) The same applies to the copier microstrip antenna.

The lateral sideband suppression type directional antenna (100 ') is installed to be exposed to the outside, such as the roof of the building, attached to the upper end of the high-frequency transceiver box (8) to connect the transceiver and the antenna (100') to each other Minimize feed cable lengths to reduce cable losses.

That is, as shown in FIG. 3, a predetermined box 8 is fabricated, a high frequency transceiver is mounted on the box 8, and the antenna support 5 is mounted on the top of the box 8 in a multilateral direction. Sideband suppression type directional antenna (100 ') is installed on the outside, such as a building roof.

On the other hand, the box (8) equipped with the high-frequency transceiver can be installed in the room or the bottom of the tower, when the box (8) is installed in the bottom of the tower, as shown in Figure 3a attached to the support (5) It is lengthened and installed inside the support 5.

On the other hand, the multi-lateral sideband suppression type directional antenna (100 ') is connected to each antenna (100') for each sector of the device for feeding the transceiver to connect the transceiver to one sector antenna or sector The antenna can be connected to the transmitter and the receiver by dividing the antenna into the upper and lower parts, respectively, and can be realized by connecting the horizontal polarization and the vertical polarization in transmission 2 and reception 2 diversity types, respectively.

That is, two antenna input connectors are provided at the transmitting side and two at the receiving side so that the transmitter and the receiver can operate separately with the diversity.

The multilateral sideband suppression type directional antenna 100 'is a multilateral side sectorized in four directions by combining four or six outer surfaces thereof in contact with each other as shown in FIGS. 3B and 3C. A wave suppression type directional antenna or a multilateral sideband suppression type directional antenna sectorized in 6 directions can be implemented.

The antennas attached and assembled in three to six directions are covered with a cylindrical insulator for moistureproof or snowproof radome (4), and radiates the radio wave output through the radio copy machine (1) through the moistureproof or snowproof radome (4). Then, the outside of the moisture-proof or snow-proof radome (4) is painted in an environmentally friendly painting, painting, and the like.

In some cases, the moisture-proof or snow-proof radome 4 is provided with at least one parasitic element 10 vertically arranged at a position corresponding to the radio wave copier 1, and the parasitic element 10 The function may inhibit forward radiation, so that the front side of the radiation pattern may be deformed to be slightly flat.

That is, the parasitic element 10 is provided in the radome (4) for moisture-proof or anti-fog, even when not shown through the accompanying drawings 3 to 5 for the moisture-proof or anti-fog provided with the parasitic element 10 If the radome (4) is put on the antenna can be applied to all.

Reference numeral 7 denotes a high frequency distribution matcher.

The multilateral sideband suppression type directional antenna 100 'implemented as described above does not cause mutual interference of radio waves radiated from one multilateral sideband suppression type directional antenna 100' as shown in FIG. It has a propagation pattern to avoid.

That is, when the antenna 100 'is installed as shown in FIG. 4A, the radio waves (dotted lines) radiating to the right and left of the QP are absorbed by the radio wave absorber 3a, as shown in FIG. 4C. Radio waves are radiated only in the front (front) QP direction.

For example, in the case of combining four multi-lateral sideband suppression type directional antennas 100 'as shown in FIG. Radio waves are radiated like a horizontal radiation pattern such as

In addition, when six multilateral sideband suppression type directional antennas 100 'are coupled as shown in FIG. 4F, radio waves are radiated like a horizontal radiation pattern as shown in FIG. 4G.

At this time, as shown in the horizontal radiation pattern diagram shown in Figs. 4E and 4G of the accompanying drawings, the signal transmitted through the radio wave copier 1 propagates and radiates only in the 40 ° direction or the 60 ° direction and interferes with both adjacent sectors. The dotted line (---) radiation component is absorbed largely by the radio wave absorber 3a.

FIG. 4B is a front view of the antenna shown in FIG. 4A, wherein the vertically polarized wave radiator 1a is vertically arranged in multiple stages, and the vertically polarized wave radiator 1a and the vertically polarized wave are arranged in multiple stages. The horizontally polarized radio wave radiator 1b is arranged between the copier 1a.

Accordingly, signals generated by the vertically polarized wave radiators 1a are synthesized, and signals generated by the horizontally polarized wave radiators 1b are synthesized, and the synthesized signal is shown in FIG. 2C. The input and output force through the electric wave input / output force connectors 6a and 6b is provided so that the multilateral sideband suppression type directional antenna spherical by the present invention can be operated in diversity.

The multi-lateral sideband suppression type directional antenna implemented by the present invention, by attaching a radio wave absorber to the metal reflector, or by installing two or at least two or more radio radiators in parallel to remove the interference generated from each other It propagates and radiates only forwards, and absorbs both sides of the wave so that almost no radio waves are radiated toward the adjacent two sectors, thereby preventing almost all interference and increasing the number of subscribers.

5A to 5C are diagrams illustrating another embodiment of the present invention.

As shown in FIG. 5, instead of attaching the radio wave absorber 3a to the corner (angle) metal reflector as in the embodiment of the present invention described above, two radio wave copiers 1 are paralleled. By attaching so as to prevent interference between adjacent channels like the radio wave absorber 3a applied by the embodiment of the present invention.

In addition, the present invention can not only operate the antenna of the present invention in diversity by cross-attaching a horizontal copier in the same manner as shown in Figure 4b of the accompanying drawings, it can be operated in various ways such as spaced apart from the antenna and repeater.

FIG. 6A illustrates a planar angular antenna using a planar fetch type microstrip antenna. The outer corner corners of the corners are made short to form a radiocopier 1a as a microstrip, and a parasitic element on the front thereof. It is an antenna implemented by attaching several (10) so that the height (H) of the antenna is low.

The antenna shown in FIG. 6A is installed such that the horizontal and vertical polarized wave radiators are alternately arranged as shown in FIG. 6B. Numerals 1a and 10a, which are numbered in the figure, are vertically polarized wave radiators and parasitic elements, and 1b and 10b are horizontally polarized wave radiators and parasitic elements.

As shown in FIG. 6B, one or two horizontal and vertical polarization radio wave radiators and parasitic elements are arranged in parallel and / or in series. 6, the signals generated by the vertical polarizers 1a are synthesized, and the signals generated by the horizontal polarizers 1b are synthesized. The synthesized signal is output (output) through the radio wave input / output connector (6a, 6b) shown in Figure 6a of the accompanying drawings so that it can be operated in diversity like the antenna shown in Figure 4a of the accompanying drawings. Can be.

The antenna implemented as described above is installed in three to six directions, as shown in Figure 6c and 6d of the accompanying drawings, by forming a moisture-proof or anti-raid radome (4) in a circular or square to cover the antenna, the external environment To protect the antenna from

The present invention is not limited to the embodiments described above, and various modifications and changes can be made by those skilled in the art, which are included in the spirit and scope of the present invention as defined in the appended claims.

As described above, the present invention attaches a radio wave absorber to the inner surface of the metal reflector plate of the antenna, absorbs sidebands radiated to both sides of the corners by the radio wave copier, and only the side of the corners (angles). By allowing the wave to propagate, it prevents the side wave from overlapping with other wave regions on both sides, reducing interference and providing the effect of improving call quality and increasing subscribers.

That is, when the multilateral sideband suppression type directional antenna is implemented in the 6 sector direction, the number of subscribers can be increased by 6 times than when implemented in the 1 sector direction.

In addition, the present invention by attaching and coupling the antenna in the form of the top of the transmitter to install the transceiver on the roof of the building, by minimizing the length of the feed cable connecting the transceiver and the antenna to each other significantly reduce the cable loss propagation Not only can the radiation efficiency be improved, but the cable spacing is reduced and the environment-friendly moisture-proof or anti-raid radome is combined with the antenna to protect the antenna from the external environment and to decorate the surrounding environment. .

Claims (11)

In the directional antenna that the front side is wider than the rear and the metal reflector plate and the radio wave copier is attached to the inner rear of the metal reflector plate, the transceiver is connected to the radio wave copier to emit lateral side waves A radio wave absorber for absorbing sidebands radiated to both sides of corners (angles) by the radio wave radiator and for radio wave radiation of side band waves only in the corner (angle) direction is attached to an inner side surface of the metal reflector, and the radio wave radiator At least one parasitic element is installed in a vertical arrangement at a position corresponding to the multi-lateral sideband suppression type directional antenna, characterized in that for suppressing forward radiation and / or lateral radiation. In the multilateral sideband suppression type directional antenna, A metal reflector in which the front is wider than the rear, and At least one radio wave radiator attached horizontally to the inner rear side of the metal reflecting plate and attached in parallel; At least one parasitic element is installed in a vertical arrangement at a position corresponding to the radio wave radiator, thereby suppressing forward radiation and / or lateral radiation. delete delete A metal reflector having a front wider than the rear, a dielectric is provided inside the metal reflector, and a vertically polarized wave radiator and a horizontally polarized wave radiator are stacked and installed on the dielectric in multiple stages. A multi-sided sideband suppression type directional antenna, characterized in that the dielectric is laminated and formed in the dielectric at least one parasitic element is installed at a predetermined interval. The method of claim 5, Signals generated by the vertically polarized wave radiators are synthesized, and signals generated by the horizontally polarized wave radiators are synthesized, and the synthesized signal is output through the radio wave input / output connector. Multi-sided sideband suppression type directional antenna, characterized in that implemented as a diversity antenna. The method of claim 1, The outer side of the metal reflecting plate is coupled to the outer surface of the other metal reflecting plate in contact with each other, so that at least one direction is sectorized, so that radio waves can be radiated without mutual interference with respect to both adjacent sectors thereof. High-wave suppression type directional antenna. The method according to any one of claims 1, 2 and 5 to 7, At least one electromagnetic wave radiator is vertically arranged inside the metal reflector, and a small radome for moisture-proof or anti-fog to protect the entire multi-sector directional antennas including the metal reflector from the external environment is formed in a cylindrical shape or a rectangular shape. Multi-lateral sideband suppression type directional antenna, characterized in that. The method of claim 8, wherein the moisture-proof or anti-raid radome is an insulator, the moisture-proof or anti-raid radome having an environmentally friendly form by painting the outside of the moisture-proof or anti-raid radome using a paint, or by drawing a picture on the outside. Multi-directional sideband suppression type directional antenna, characterized in that the fabrication. The method of claim 8, The cylindrical (or angular) small radome is entirely covered with the lateral sideband suppression type directional antenna attached to the transceiver box and installed outside to reduce the cable loss by minimizing the feed cable length connecting the transceiver and the antenna to each other. A lateral sideband suppression type directional antenna, characterized in that. delete