KR102292229B1 - Bend-Dipole Array Antenna for Radar Wind Profiler - Google Patents

Abstract

The present invention relates to a bend-dipole array antenna for a radar wind profiler. According to the present invention, a bend-dipole antenna input loss can be minimized using an air strip line, the size of the antenna device as a whole can be minimized, and fixability and producibility can be enhanced as production at a uniform thickness is possible using a dielectric having a honeycomb structure. The antenna of the present invention includes: a pair of first and second antenna substrates parallel to, separated from, and facing each other and having outer surfaces where bend-dipole antennas are formed successively; a dielectric having a honeycomb structure and installed between the first antenna substrate and the second antenna substrate; a strip line as a feed line installed on the inside surface of the first antenna substrate so as to correspond to each bend-dipole antenna; strip supports fixing and supporting the strip line on the first antenna substrate; a pair of L-shaped brackets respectively installed at the lower ends of the outer surfaces of the first antenna substrate and the second antenna substrate; connectors respectively connected to the lower ends of the strip lines and connected to an external feed line; and a connector block installed on the bottom surfaces of the first antenna substrate, the second antenna substrate, and the dielectric with the connector coupled and supported.

Description

Bend-Dipole Array Antenna for Radar Wind Profiler

The present invention relates to a band dipole array antenna for vertical wind observation equipment, and more particularly, to a band dipole array antenna for vertical wind observation equipment using an air strip line structure and a band-dipole antenna.

In general, since meteorological conditions are very important for the safe operation of aircraft, various weather information observation equipment is installed and used. In particular, in the case of airports where many aircraft take off and land, it is more important to collect weather information for the area.

Korean Patent Laid-Open Nos. 10-2020-0029783, 10-1998-0004244, Registered Patent Publication Nos. 10-1063999, 10-0566349 and Japanese Patent Laid-Open No. 2007-240190, Japanese Patent Application Laid-Open No. 2007-033432 Various technologies that provide and support weather information necessary for aircraft operation and take-off and landing are disclosed.

Recently, the Radar Wind Profiler (RWP) is being used to observe and analyze the wind direction and wind speed in the upper atmosphere with radar and provide information for weather forecasting or aircraft operation.

Vertical Wind Observation Equipment (RWP) emits high-power radio waves (RF radio waves of UHF or VHF frequencies) toward the sky and receives radio waves backscattered by atmospheric turbulence (radio waves reflected by wind and rainfall, etc.) at an altitude of 5 km above the ground. It is an equipment to observe wind and dynamic atmospheric phenomena.

The information collected from the vertical wind observation equipment plays an important role in understanding general wind characteristics and precipitation structures, and providing information for take-off and landing of aircraft and rotorcraft.

As the antenna of the vertical wind observation equipment, an ECCD (Electromagnetically Coupled Coaxial Dipole) or a dipole type antenna is used.

The ECCD antenna is designed and manufactured using the phase and the size of the element, and there are disadvantages in that deformation or internal damage cannot be confirmed during manufacturing, and antenna gain loss and phase adjustment are impossible.

The dipole antenna is designed and manufactured as an antenna that is commonly used, and has a disadvantage in that it has a large power loss and a large size.

Korean Patent Publication Nos. 10-1628815 and 10-1435538 disclose techniques for a dipole antenna generally used for transmission and reception of communication.

Conventional band-dipole (Bend-Dipole) antennas have small power loss, broadband characteristics, and small size compared to general dipole antennas.

However, when manufacturing an antenna with a normal microstrip, a feeding loss occurs depending on the loss factor, and it is difficult to manufacture due to a lot of separation in the part where the antenna is fixed, and it is difficult to manufacture it with a uniform thickness, so the dimensional accuracy of the product is difficult. It has the problem of lowering. In addition, these problems directly cause problems in the radiation pattern, which is an electrical characteristic.

The present invention has been made from a bird's eye view of the above, and it is possible to minimize the input loss of the band-dipole antenna and obtain an excellent standing wave ratio by using an air strip line, to minimize the size of the overall antenna element, and to provide a honeycomb structure. An object of the present invention is to provide a band dipole array antenna for vertical wind observation equipment that is easy to fix and manufacture because it is possible to manufacture it with a uniform thickness using a dielectric.

A band dipole array antenna for vertical wind observation equipment according to an embodiment of the present invention includes a plurality of band-dipole antennas and an antenna unit in which a stripline is installed, a power distributor for supplying power to the stripline of the antenna unit, and the power The divider is installed inside and the antenna unit includes a subframe that is coupled and installed on the upper surface.

The sub-frame is formed in a rectangular parallelepiped shape with an empty interior, an insertion slot through which the lower end of the antenna unit is inserted is formed long in the longitudinal direction on the upper surface, and a seating groove is formed on the bottom surface to seat the power distributor. .

The antenna unit is installed facing each other at a distance from each other, and a pair of first and second antenna substrates having a plurality of band-dipole antennas sequentially formed on the outer surface thereof, and the pair of first and second antenna substrates A dielectric provided between two antenna substrates and having a honeycomb structure, and a plurality of striplines that are feed lines disposed and installed corresponding to each of the band-dipole antennas on the inner surface of the first antenna substrate, and the first A plurality of strip supports for fixing and supporting the strip line to the antenna substrate, and a pair of brackets disposed and installed on the lower ends of the outer surfaces of the first and second antenna substrates, respectively, and having a cross section of a "L" shape; A plurality of connectors installed connected to the lower end of each of the strip lines and connected to an external feeding line, the first and second antenna substrates, and a connector block installed on the bottom surface of the dielectric and the connectors are coupled and supported. made including

An installation space is formed in the dielectric by cutting out a portion where each of the strip lines is installed.

The first antenna substrate and the dielectric and the second antenna substrate from the one bracket pass through the other bracket, and fastening members such as bolts and nuts are fastened to be integrally fixed.

The first antenna gipin and the second antenna substrate and the dielectric are integrally fixed using an adhesive or resin.

The band-dipole antenna formed on the first antenna substrate and the second antenna substrate is formed in the shape of a short-sleeved T-shirt with a slit formed at the upper center thereof.

The strip line is installed in the shape of a stick with a "U"-shaped curved handle or the shape of the Arabic numeral "7" so as to cross the slit formed in the band-dipole antenna.

The connector block is installed and formed to have a cross section of a “c” shape with an open upper surface.

Both vertical portions of the connector block are installed so that the inner surfaces are in contact with the outer sides of both sides of the dielectric 126 .

In the horizontal portion of the connector block, a connector coupling portion to which the connector is inserted and coupled is formed at a portion corresponding to a position where the strip line is installed.

According to the band dipole array antenna for vertical wind observation equipment according to the embodiment of the present invention, the dielectric is formed in a honeycomb structure and the dielectric is cut off at the portion where the strip line is installed to form an installation space, thereby forming an air strip line structure. , it is possible to realize an excellent standing wave ratio, and it is excellent in fixability and easy to manufacture.

In addition, according to the band dipole array antenna for vertical wind observation equipment according to the embodiment of the present invention, since the dielectric is formed in a honeycomb structure, it is possible to manufacture it with a uniform thickness, and it is possible to maintain a rigid mechanical strength. , it is possible to minimize the dielectric constant.

And, according to the band dipole array antenna for vertical wind observation equipment according to an embodiment of the present invention, since the band-dipole antenna is formed on the first antenna substrate and the second antenna substrate, it is inclined by 20° including the vertical direction. When five beams are sequentially transmitted in the east, west, north, and south directions, the degree of isolation between adjacent elements is improved, it is possible to minimize the influence between each element, and it is possible to obtain excellent radiation characteristics without distortion, and to reduce the size of the entire antenna element. It is possible to minimize

1 is a perspective view showing a band dipole array antenna for vertical wind observation equipment according to an embodiment of the present invention.
Figure 2 is an exploded perspective view showing a band dipole array antenna for vertical wind observation equipment according to an embodiment of the present invention.
3 is an exploded perspective view showing the antenna unit in the band dipole array antenna for vertical wind observation equipment according to an embodiment of the present invention.
4 is a side view showing the antenna unit in the band dipole array antenna for vertical wind observation equipment according to an embodiment of the present invention.
5 is a cross-sectional view taken along line AA of FIG. 4 showing the antenna unit in the band dipole array antenna for vertical wind observation equipment according to an embodiment of the present invention.
6 is a partially enlarged cross-sectional view illustrating a state in which a strip line is installed in an antenna unit in a band dipole array antenna for vertical wind observation equipment according to an embodiment of the present invention.
7 is a cross-sectional view illustrating a first antenna substrate or a second antenna substrate of an antenna unit in a band dipole array antenna for a vertical wind observation device according to an embodiment of the present invention.
8 is a perspective view illustrating an arrayed antenna assembly configured by arranging a plurality of band dipole arrayed antennas for vertical wind observation equipment in columns and rows according to an embodiment of the present invention.
9 is a beam steering of 0° in the elevation direction and 0° in the azimuth direction using the array antenna assembly of FIG. 8 configured by arranging a plurality of band dipole array antennas for vertical wind observation equipment according to an embodiment of the present invention It is a graph showing the measured value of the radiation pattern for
10 is a beam of 0° in the elevation angle direction and +20° in the azimuth direction using the array antenna assembly of FIG. 8 configured by arranging a plurality of band dipole array antennas for vertical wind observation equipment according to an embodiment of the present invention. It is a graph showing the measured value of the radiation pattern for steering.
11 is a beam of +20° in the elevation angle direction and 0° in the azimuth direction using the array antenna assembly of FIG. 8 configured by arranging a plurality of band dipole array antennas for vertical wind observation equipment according to an embodiment of the present invention It is a graph showing the measured value of the radiation pattern for steering.
12 is a beam of 0° in the elevation angle direction and -20° in the azimuth direction using the array antenna assembly of FIG. 8 configured by arranging a plurality of band dipole array antennas for vertical wind observation equipment in accordance with an embodiment of the present invention. It is a graph showing the measured value of the radiation pattern for steering.
13 is a beam of -20° in the elevation direction and 0° in the azimuth direction using the array antenna assembly of FIG. 8 configured by arranging a plurality of band dipole array antennas for vertical wind observation equipment according to an embodiment of the present invention It is a graph showing the measured value of the radiation pattern for steering.

Hereinafter, with reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

The terms used herein are used only to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, process, operation, component, part, or combination thereof described in the specification exists, but one or more other features It is to be understood that this does not preclude the existence or addition of numbers, processes, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

The term "MODULE" as used herein means a unit that processes a specific function or operation, which may mean hardware or software or a combination of hardware and software.

Terms or words used in the present specification and claims should not be construed as being limited to ordinary or dictionary meanings, and the inventor may properly define the concept of the term in order to best describe his invention. Based on the principle that there is, it should be interpreted as meaning and concept consistent with the technical idea of the present invention. In addition, if there is no other definition in the technical terms and scientific terms used, it has the meaning commonly understood by those of ordinary skill in the art to which this invention belongs, and in the following description and accompanying drawings, the gist of the present invention Descriptions of known functions and configurations that may be unnecessarily obscure will be omitted. The drawings introduced below are provided as examples in order to sufficiently convey the spirit of the present invention to those skilled in the art. Accordingly, the present invention is not limited to the drawings presented below and may be embodied in other forms. Also, like reference numerals refer to like elements throughout. It should be noted that the same components in the drawings are denoted by the same reference numerals wherever possible.

Next, a preferred embodiment of the band dipole array antenna for vertical wind observation equipment according to the present invention will be described in detail with reference to the drawings.

The present invention can be implemented in various various forms, and is not limited to the embodiments described below.

In the following, in order to clearly explain the present invention, detailed descriptions of parts not closely related to the present invention are omitted, and the same reference numerals are attached to the same or similar components throughout the description of the invention, and repeated descriptions are omitted. .

First, the band dipole array antenna for vertical wind observation equipment according to an embodiment of the present invention, as shown in FIGS. 1 and 2, the antenna unit 100, the power divider 200, and the subframe 300. is made including

The subframe 300 is formed in a rectangular parallelepiped shape with an empty interior.

The power distributor 200 is installed and disposed inside the subframe 300 .

A seating groove 320 in which the power distributor 200 is seated and installed is formed in the subframe 300 on the bottom surface.

In the above, the power distributor 200 is positioned in the seating groove 320 of the subframe 300 and then fixedly installed using a fixing bolt 390 or a small screw.

It is also possible to form a fastening hole 324 into which the fixing bolt 390 is inserted in the seating groove 320 of the subframe 300 .

It is also possible to form a fastening hole 224 to which the fixing bolt 390 is fastened in the power distributor 200, and to install a nut 392 in the fastening hole to fasten and fix the fixing bolt 390. .

It is also possible to install a slot for assembling the power distributor 200 in the subframe 300 instead of the seating groove 320 .

The power distributor 200 supplies power to the antenna unit 100 .

The antenna unit 100 is coupled and installed on the upper surface of the subframe 300 .

On the upper surface of the subframe 300, an insertion slot 310 into which the lower end of the antenna unit 100 is inserted is formed to be elongated in the longitudinal direction.

As the antenna unit 100 is inserted and installed in the insertion slot 310 , the lower connector 160 is coupled to the power distributor 200 to be electrically connected.

In the above, the horizontal portion 154 of the bracket 150 of the antenna unit 100 spans the upper surface of the subframe 300, and the antenna unit 100 is attached to the subframe ( 300) is fixed and installed.

A fastening hole 314 to which the fixing bolt 195 is fastened is formed in the insertion slot 310 of the subframe 300 .

A female screw may be formed in the fastening hole 314 , and a nut may be fixedly installed on the lower surface of the fastening hole 314 .

The power distributor 200 is installed on both sides of the subframe 300, and then the cover 380 is coupled and installed to prevent foreign substances from entering the inside.

And, as shown in FIGS. 3 to 7 , the antenna unit 100 includes a pair of first and second antenna substrates 110 and 120 , a dielectric 126 , and a plurality of strips serving as feed lines. A line 130 , a plurality of strip supports 140 , a pair of brackets 150 , a plurality of connectors 160 , and a connector block 170 are included.

The first antenna substrate 110 and the second antenna substrate 120 are installed to face each other at a distance from each other in parallel.

As shown in FIG. 7 , a plurality of band-dipole antennas 114 are sequentially formed on one side of the first antenna substrate 110 and the second antenna substrate 120 .

The band-dipole antenna 114 is formed in an approximately short-sleeved T-shirt shape in which a slit 115 is formed in the upper central portion.

In the above, the band-dipole antenna 114 is formed in a bent dipole shape with an inclined top bent in order to improve isolation between adjacent elements (stripline and antenna).

When the band-dipole antenna 114 configured as described above is formed and used, since the dipole is formed in a bent shape, it is possible to minimize the size of the entire antenna element.

The lower end of the band-dipole antenna 114 is formed in a shape in which neighboring band-dipole antennas 114 are connected to each other.

The band-dipole antenna 114 is preferably formed using copper foil and subjected to a film treatment such as tin plating.

In the above, it is preferable to form a strip 118 between the adjacent band-dipole antennas 114 to reduce the mutual coupling of the electric field.

4 to 6 , the dielectric 126 is installed to be inserted between the first antenna substrate 110 and the second antenna substrate 120 .

The dielectric 126 is preferably formed in a honeycomb structure because it is possible to form an air gap.

When the dielectric 126 is formed in a honeycomb structure as described above, it is possible to obtain strong mechanical strength and minimum dielectric constant.

In addition, when the dielectric 126 is formed in a honeycomb structure, it is possible to maintain a uniform distance between the first antenna substrate 110 and the second antenna substrate 120, and it is possible to produce a uniform thickness. .

The first antenna substrate 110 and the second antenna substrate 120 and the dielectric 126 are integrally fixed using an adhesive or resin.

As described above, when the dielectric body 126 of the honeycomb structure is integrally fixed by using an adhesive, fixability and manufacturability are greatly improved.

4 and 6 , the strip line 130 is installed on the inner surface of the first antenna substrate 110 .

The strip lines 130 are respectively disposed and installed to correspond to each of the band-dipole antennas 114 formed on the first antenna substrate 130 .

The strip line 130 is installed in the shape of a stick with a curved handle in the "U" shape or the shape of the Arabic numeral "7" to cross the slit 115 formed in the band-dipole antenna 114. .

As shown in FIGS. 4 and 6 , an installation space 128 is formed in the dielectric 126 by cutting a portion where the respective strip lines 130 are installed.

The installation space 128 may be formed in a substantially rectangular shape.

An air gap is formed by forming the installation space 128 in the dielectric 126 as described above.

When configured as described above, the strip line 130 is configured as an air strip column, and it is possible to minimize the pressure loss of the band-dipole antenna 114 .

4 and 6 , the strip line 130 is fixedly supported on the first antenna substrate 110 using a plurality of strip supports 140 .

The strip support material 140 may be used to form a square plate shape or a square sheet shape.

The strip support 140 may be formed using a hard foam material.

The strip support 140 fixedly supports the strip line 130 by adhesively fixing it to the first antenna substrate 110 using an adhesive.

By installing the strip line 130 and the first antenna substrate 110 and the second antenna substrate 120 as described above, the power feeding structure of the air strip line is implemented.

If the power feeding structure of the air strip line is implemented as described above, it is possible to realize excellent standing wave ratio performance.

As shown in FIGS. 4 and 6 , a connector 160 is connected to and installed at the lower end of each of the strip lines 130 .

The power distributor 200 connected to an external power supply line is connected to the connector 160 .

For example, as shown in FIGS. 1 and 2 , the antenna unit 100 is installed in the subframe 300 in a state in which the connector 160 is coupled to the power distributor 200 .

3 to 6 , the connector block 170 is installed on the bottom surface of the first antenna substrate 110 and the second antenna substrate 120 and the dielectric 126 .

The connector 160 is coupled to and supported on the connector block 170 .

The connector block 170 is installed and formed to have a cross section of a “C” shape with an open upper surface.

Both vertical portions 174 of the connector block 170 are installed so that the inner surfaces are in contact with the outer sides of both sides of the dielectric 126 .

A connector coupling part 176 to which the connector 160 is inserted and coupled to the horizontal part 172 of the connector block 170 is formed at a portion corresponding to a position where the strip line 130 is installed.

The connector 160 is fixedly installed to the connector coupling part 176 using a small screw 169 or the like.

As shown in FIGS. 3 and 5 , the pair of brackets 150 are respectively disposed and installed at the lower ends of the outer surfaces of the first antenna substrate 110 and the second antenna substrate 120 .

In the above, the first antenna substrate 110, the dielectric 126 and the second antenna substrate 120 from the one bracket 150, the bolt 192 and the nut 194, etc. through the bracket 150 on the other side By fastening the fastening member 190 of the integrally fixed.

The pair of brackets 150 are formed and installed in a shape having a “L”-shaped cross-section.

The bracket 150 is installed in a state in which the vertical portion 152 is in close contact with the outer surfaces of the first antenna substrate 110 and the second antenna substrate 120 .

A plurality of fixing holes 159 through which the bolts 192 of the fastening member 190 are inserted are formed in the vertical portion 152 of the bracket 150 .

In the above, it is also possible to attach and install a nut 194 on the outer surface of the bracket 150 in correspondence with each fixing hole 159 .

When the nut 194 is configured as described above, since only the bolt 192 is inserted from the opposite side and fastened to the nut 194, the assembly operation is made easier.

A plurality of installation holes 155 through which the fixing bolts 195 are inserted are formed in the horizontal portion 154 of the bracket 150 in the state of being assembled to the subframe 300 .

As shown in FIG. 7 , a plurality of fixing holes 119 through which the bolts 192 of the fastening member 190, etc. pass through the first antenna substrate 110 and the second antenna substrate 120 correspond to positions. is formed in

And, as shown in FIG. 3 , a plurality of fixing holes 179 through which the bolts 192 of the fastening member 190 pass are also formed in the vertical portion 174 of the connector block 170 .

Next, an assembly process of the band dipole array antenna for vertical wind observation equipment according to an embodiment of the present invention configured as described above will be described.

?汰?, band-a dielectric 126 of a honeycomb structure is placed on the inner surface of the first antenna substrate 110 on which the dipole antenna 114 is formed and fixed using an adhesive. At this time, it is also possible to use a fixed surface plate and a fixed block if necessary.

In the state in which the dielectric 126 is fixed to the first antenna substrate 110 as described above, a portion of the dielectric 126 is removed to the first antenna substrate 110 at a portion located in the installation space 128 . The strip line 130 is installed by adhesively fixing the strip support 140 using an adhesive.

Then, the second antenna substrate 120 is fixedly installed on the dielectric 126 from the opposite side of the first antenna substrate 110 using an adhesive. Even at this time, it is also possible to use a fixing plate and a fixing block if necessary.

In a state in which the first antenna substrate 110, the dielectric 126, and the second antenna substrate 120 are assembled and fixed as described above, the connector block 170 is disposed on the bottom side and installed.

In the above, the connector block 170 couples both vertical portions 174 to be positioned between the first antenna substrate 110 and the dielectric 126 and the second antenna substrate 120 and the dielectric 126, respectively.

In the above, in a state in which the connector block 170 is previously coupled to cover the lower end of the dielectric 126 , the first antenna substrate 110 and the second antenna substrate 120 are sequentially bonded to the dielectric 126 using an adhesive. It is also possible to assemble.

When the connector block 170 is first combined with the dielectric 126 as described above, the first antenna substrate 110 and the second antenna substrate 120 and the dielectric 126 are first joined, and then the connector block 170 is connected. The assembly operation of the connector block 170 is made easier than the combination.

For example, after the dielectric 126 and the first antenna substrate 110 and the second antenna substrate 120 are first combined, both vertical portions 174 of the connector block 170 are connected to the first antenna substrate 110 . ) and the second antenna substrate 120 and the dielectric 126 when inserted between the dielectric 126, there is a fear that some form of the collapse, in order to avoid this, the vertical portion of the connector block 170 at the lower end of the dielectric 126 It is necessary to form in advance a groove into which the 174 is to be inserted.

In the assembled state as described above, the first antenna substrate 110 and the second antenna substrate 120 are positioned so as to be in contact with the vertical portion 152 of the bracket 150 on the outer side surfaces of the lower ends, respectively, The bolt 192 of the fastening member 190 from one bracket 150 passes through the fixing hole 159 of the one bracket 150, the fixing hole 119 of the first antenna substrate 110, and the connector block (170) After passing through the fixing hole 179 of one vertical part 174 and the dielectric 126, the fixing hole 179 of the opposite vertical part 174 of the connector block 170, the second antenna substrate ( By fastening the nut 194 to the end of the bolt 192 protruding through the fixing hole 119 of 120 and the fixing hole of the opposite bracket 150, the pair of brackets 150, the pair of first The antenna substrate 110 , the second antenna substrate 120 , and the connector block 170 are assembled as a whole in a state where they are integrated and fixed.

Each connector 160 is assembled to the connector coupling part 176 of the connector block 170 and is fixed with a small screw 169 or the like.

In the above assembly, the connector 160 may be assembled before the connector block 170 is coupled to the bottom surface of the dielectric 126 , and the connector 160 may be assembled after assembling up to the bracket 150 . possible.

When the primary assembly of the antenna unit 100 is made as described above, as shown in FIGS. 4 and 6 , the first antenna substrate 110 and the second antenna substrate 110 from both sides of the connector block 170 in the longitudinal direction It is preferable to use the finishing material 180 along the sides of the antenna substrate 120 and the dielectric 126 to seal it so that foreign substances or moisture do not penetrate.

The antenna unit 100 assembled as described above has a connector 160 and a bracket 150 at the lower end in the insertion slot 310 formed on the upper surface of the subframe 300 into which the power distributor 200 is inserted and assembled. Assembling in a state in which the vertical part 152 of the bracket 150 is inserted, and fastening the fixing bolt 195 to the upper surface of the subframe 300 through the installation hole 155 formed in the horizontal part 154 of the bracket 150 It is fixedly installed to the sub-frame 300 as that.

And, as shown in FIG. 8, the band dipole array antenna for vertical wind observation equipment of an embodiment of the present invention assembled as described above is used for vertical wind observation by arranging a plurality of antennas on the installation frame 400. it is possible

For example, 8 band-dipole antennas 114 are installed by synthesizing 8 antenna units 100 to form 64 array antennas, and the 64 array antennas configured in this way are subjected to Doppler shift in the vertical direction and in four directions, east, west, north, south, and south. It is also possible to configure the vertical wind observation equipment to sequentially transmit and receive signals.

In general, the vertical wind observation equipment is configured to check the wind and weather conditions by sequentially transmitting five beams in the east, west, south, north, and south directions inclined by 20° including the vertical direction and analyzing the measured radiation pattern.

9 to 13 are graphs of the results of proximity electric field measurement to confirm the beam steering characteristics and radiation pattern in the east, west, south, north, and south directions with the front beam and the azimuth/elevation angle of ±20° respectively inclined as described above.

9 to 13 , a red line graph indicates a measured value (Measured), and a black line graph indicates a value designed through simulation (Calculated).

9 to 13 , it was confirmed that the results of the simulated value (Calculated) and the measured value (Measured) were similar. However, there is an asymmetry of the first lobe and there is an error between the simulated value and the measured value at a wide angle. It is analyzed that this is due to the effect of the alignment error caused by

The results measured as described above are shown in Table 1 below.

Beam Steering simulation value Measures Azimuth (°) Elevation (°) HPBW(°) Gain (dBi) HPBW(°) Gain (dBi) 0 0 9.0/9.0 26.5 9.4/9.2 26.2 +20 0 9.6/9.6 25.8 9.7/9.3 26.1 -20 0 9.6/9.6 25.8 9.7/9.4 26.1 0 +20 9.6/9.6 25.5 9.8/9.9 25.8 0 -20 9.6/9.6 25.5 9.7/10.1 25.7

In Table 1, the gain of the measured value includes the loss of the power divider, and HPBW represents the Half Power Beam Width.

As can be seen above, the band dipole array antenna for vertical wind observation equipment according to an embodiment of the present invention has excellent radiation characteristics without distortion at a beam steering angle of ±20°, excellent standing wave ratio, and isolation characteristics. .

In the above, a preferred embodiment of the band dipole array antenna for vertical wind observation equipment according to the present invention has been described, but the present invention is not limited thereto, and various modifications are made within the scope of the claims, the description of the invention, and the accompanying drawings. It is possible, and this is also within the scope of the present invention.

100 - antenna unit, 110 - first antenna substrate, 114 - band-dipole antenna
115 - slit, 118 - strip, 119 - fixing hole, 120 - second antenna board
126 - dielectric, 128 - footprint, 130 - stripline, 140 - strip support
150 - Bracket, 152 - Vertical part, 154 - Horizontal part, 155 - Mounting hole
159 - fixing hole, 160 - connector, 169 - machine screw, 170 - connector block
172 - Horizontal part, 174 - Vertical part, 176 - Connector coupling part, 179 - Fixing hole
180 - Finishing material, 190 - Fastening member, 192 - Bolt, 194 - Nut, 195 - Fixing bolt
200 - power distributor, 224 - fastening hole, 300 - subframe, 310 - insertion slot
314 - installation hole, 320 - seating groove, 324 - fastening hole, 380 - cover
390 - fixing bolt, 392 - nut, 400 - installation frame

Claims (7)

A subframe in which a plurality of band-dipole antennas and striplines are installed, an antenna unit is installed, a power divider for supplying power to the stripline of the antenna unit, and the power divider is installed inside and the antenna unit is coupled and installed on an upper surface including,
The subframe is formed in a rectangular parallelepiped shape with an empty interior,
An insertion slot through which the lower end of the antenna unit is inserted is formed long in the longitudinal direction on the upper surface of the subframe,
A seating groove is formed on the bottom surface of the sub-frame in which the power distributor is seated and installed,
The antenna unit is installed facing each other at a distance from each other, and a pair of first and second antenna substrates having a plurality of band-dipole antennas consecutively formed on the outer surface thereof, and the pair of first and second antenna substrates A dielectric provided between the two antenna substrates and having a honeycomb structure, and a plurality of striplines that are feed lines disposed and installed corresponding to each of the band-dipole antennas on the inner surface of the first antenna substrate, and the first A plurality of strip supports for fixing and supporting the strip line to the antenna substrate, and a pair of brackets disposed and installed on the lower ends of the outer surfaces of the first and second antenna substrates, respectively, and having a cross section of a "L"shape; A plurality of connectors installed connected to the lower end of each of the strip lines and connected to an external feeding line, the first and second antenna substrates, and a connector block installed on the bottom surface of the dielectric and the connectors are coupled and supported. Band dipole array antenna for vertical wind observation equipment including. The method according to claim 1,
A band dipole array antenna for vertical wind observation equipment to form an installation space by cutting out a portion where each strip line is installed in the dielectric. The method according to claim 1,
A band dipole array antenna for vertical wind observation equipment fixed integrally by fastening the fastening member through the first antenna substrate, the dielectric and the second antenna substrate from one bracket among the pair of brackets, and the other bracket sequentially. The method according to claim 1,
A band dipole array antenna for vertical wind observation equipment in which the first and second antenna substrates and the dielectric are integrally fixed using an adhesive or resin. The method according to claim 1,
The band-dipole antenna formed on the first antenna substrate and the second antenna substrate is a band dipole array antenna for vertical wind observation equipment formed in the shape of a short-sleeved T-shirt having a slit in the upper center. 6. The method of claim 5,
The strip line is a band dipole array antenna for vertical wind observation equipment that is formed and installed in the shape of a stick with a "U"-shaped bent handle or the shape of the Arabic numeral "7" so as to cross the slit formed in the band-dipole antenna. 7. The method of claim 6,
The connector block is installed and formed to have a "C"-shaped cross section with an open upper surface,
Both vertical portions of the connector block are installed so that the inner surface is in contact with the outer side of both sides of the dielectric,
A band dipole array antenna for vertical wind observation equipment in which the connector coupling part into which the connector is inserted and coupled to the horizontal part of the connector block is formed in a portion corresponding to the position where the strip line is installed.

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