KR20190117965A - Uniform circular array antenna for milimeter wave - Google Patents

Abstract

The present invention relates to a uniform circular array antenna for a millimeter wave, which comprises: a cylinder base disposed at the bottom; a cylinder cover spaced parallel to the top of the cylinder base; and a plurality of element attaching bars having a lower end coupled to an upper circumferential surface of the cylinder base and an upper end coupled to a lower circumferential surface of the cylinder cover, and including a plurality of element attaching bars in which a plurality of element arrays are attached and patched with a plurality of antenna elements attached to an outer circumferential surface. The plurality of element attaching bars may be arranged to be spaced apart at equal intervals along the circumferential direction of the cylinder base and the cylinder cover, thereby providing an advantage of improving the resolution to improve beamforming characteristics.

Description

Uniform Circular Array Antenna for Millimeter Waves {UNIFORM CIRCULAR ARRAY ANTENNA FOR MILIMETER WAVE}

FIELD OF THE INVENTION The present invention relates to a uniform circular array antenna for millimeter wave, and more particularly, to improve beamforming resolution and to form various combinations of beam angles through individual control of multiple element arrays patched with multiple antennas. The present invention relates to a millimeter wave uniform circular array antenna capable of improving beamforming characteristics.

In general, the performance and capacity of a mobile communication system include co-channel interference signals, path loss, multipath fading, signal delay, and / or transmission during movement. It is fundamentally limited by the radio propagation channel characteristics such as the Doppler spreading effect in the receiver. Therefore, the current mobile communication system is applying a variety of techniques such as diversity antenna, cell sectorization, frequency division, spread spectrum, etc. to receive various channel characteristics as a compensation technique for performance and capacity limitation. . However, as the demand increases due to the diversification of the demand for mobile communication services, there is a limit to meet the demand for high performance and high capacity, which is increased only by the existing technology, and the implementation of IMT-2020 as a technology for overcoming these limitations. Is sure. In addition, mobile communication systems in the near future will establish a multimedia communication service environment that requires much higher quality and higher capacity compared to conventional cellular and personal mobile communication.

Accordingly, in a cell environment where various service signals will be mixed in the future, it is essential to attenuate the influence of strong interference signals caused by high-speed data having a relatively high transmission power and transmission bandwidth. Antenna) technology has been proposed. Unlike the case of combining multiple paths using a plurality of diversity antennas, the smart antenna technology transmits and controls different adaptive antenna beam patterns according to changes in an array antenna and a wireless signal environment. This technology enables the maximum reception performance and capacity.

The most prominent commercialization technology in the technical field of smart antennas is the Switched-Beam System. The principle of such a switch beam system has a structure that selectively receives a signal received at each antenna by radiating 360 degrees in all directions using a plurality of array antennas having a beam width of about 20-30 degrees. The switch beam system is likely to be applied to an indoor environment. In particular, in such an indoor environment, scattering, diffraction, and reflection of radio waves are very high due to the structure of walls, ceilings, and doors that form each space within an indoor space having limited propagation characteristics. It is expected to be large.

However, currently developed smart antennas have a structure in which array antennas having the same polarization characteristics are applied, so that signals received at each array element of the array antennas have only spatial diversity characteristics expressed as a function of the distance between antennas. Has disadvantages.

Korean Unexamined Patent Publication No. 10-2002-0055231 (published Jul. 8, 2002) (hereinafter referred to as “prior art 1”) discloses a smart antenna that can be applied with a polarization diversity technique.

The prior art 1 has a structure in which a dual polarized microstrip antenna is formed into a plurality of array blocks to selectively receive a signal received at each antenna by radiating 360 degrees in all directions using a plurality of array antennas having a constant beam width. It is starting.

However, in the prior art 1, the dual polarized microstrip antenna elements exhibiting the same polarization characteristics at the same angle are arranged up and down long, and the dual polarized microstrip antenna elements exhibiting the polarization characteristics at different angles adjacent to each other are arranged. Adopting the multiple arrangement structure, the horizontal range of the polarization group exhibiting 45 degrees, -45 degrees, horizontal and vertical polarization characteristics is limited, there is a limit in the combination of polarization beam angle formation.

In particular, the prior art 1 is not possible to selectively feed control by forming a feed structure limited to cellular communication of 6 GHz or less, in particular a feed line having a vertical polarization characteristic impedance value and a feed line having a horizontal polarization characteristic impedance value separately. There is an unsuitable problem in the millimeter wave frequency band such as 28 GHz of 5G communication that has been put into practical use.

On the other hand, Republic of Korea Patent Publication No. 10-2011-0051091 (published May 17, 2011) (hereinafter referred to as 'prior art 2') is a radiation element is arranged in a circle so that the satellite connection at all times without the antenna beam steering, radiation A flat circular array antenna is disclosed which forms an omnidirectional radiation pattern by adjusting an arrangement angle of radiating elements clockwise or counterclockwise with respect to one of the elements.

However, the prior art 2 is to arrange only the antenna elements in a circular shape, but to arrange them on a flat substrate, thereby substantially limiting the role of a mobile terminal for a mobile terminal user on the ground.

(Patent 01) Publication No. 10-2002-0055231 (published Jul. 8, 2002) (Patent 02) Publication No. 10-2011-0051091 (published May 17, 2011)

An object of the present invention is to provide a millimeter wave uniform circular array antenna that can implement a variety of beamforming characteristics by adopting a feed structure through matching with the RF IC for each element array to be used in the millimeter wave frequency band, such as 28GHz suitable for 5G communication In providing.

Another object of the present invention is to provide a plurality of device arrays and RF ICs in a one-to-one correspondence structure for implementing beamforming on the front and rear surfaces of a PCB so as to have a minimum insertion loss. It is to provide a uniform circular array antenna for millimeter wave.

It is still another object of the present invention to form at least two 90 degree polarization groups in a unit element attachment bar arranged vertically and long such that the four element arrays have two unit element arrays forming mutually 90 degree polarizations. The present invention provides a uniform circular array antenna for a millimeter wave that adopts an independent feeding structure and a control structure to each element array of a plurality of element attachment bars to enable various combinations to form beam angles.

Technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following descriptions.

In order to achieve the above object, a millimeter wave uniform circular array antenna according to an embodiment of the present invention includes a cylinder base disposed at a lower portion, a cylinder cover disposed parallel to an upper portion of the cylinder base, and a lower end of the cylinder base. A plurality of device attachment bars coupled to an upper periphery and having an upper end coupled to the periphery of the cylinder cover, wherein a plurality of device arrays patched with a plurality of antenna elements are attached to the outer surface; Is arranged in the circumferential direction of the cylinder base and the cylinder cover are spaced apart at equal intervals.

Here, the plurality of element attachment bars consider a beamforming angle formed on a millimeter wave band frequency according to the plurality of antenna elements attached to each of the plurality of element attachment bars, wherein the plurality of antenna elements are half-wavelength (λ / 2) can be arranged in a number capable of maintaining the above intervals.

In addition, the cylinder base and the cylinder cover may be formed in a circular shape.

In addition, the cylinder base and the cylinder cover may be formed in a semicircular shape.

In addition, a plurality of element arrays are arranged in a plurality in the vertical direction on the outer surface of the single element attachment bar, the plurality of element arrays one 90 degree polarization of two adjacent unit arrays forming a 90 degree polarization mutually Can be grouped into groups.

The plurality of device arrays may be disposed at four locations in the vertical direction on the outer surface of the single device attachment bar, and the four device arrays may form two 90 degree polarization groups.

In addition, the plurality of element arrays arranged at the four places may be mixed and arranged within the range of the single element attachment bar so that adjacent element arrays have a polarization characteristic of 90 degrees.

The four device arrays may include a first device array disposed on an uppermost side, a second device array disposed below the first device array, a third device array disposed below the second device array, and And a fourth device array provided below the third device array, wherein the first device array is 0 degrees, the second device array is 90 degrees, the third device array is 45 degrees, and the fourth device array is A polarization characteristic of 135 degrees can be realized.

In addition, a plurality of RF ICs corresponding to the plurality of device arrays may be connected to inner surfaces of the plurality of device attachment bars.

In addition, a power supply line is formed through mutual matching between the plurality of device arrays and the plurality of RF ICs, and the selective activation and beam angle adjustment of the plurality of device arrays may be possible.

According to the millimeter wave uniform circular array antenna according to the present invention, various effects as follows can be achieved.

First, by placing the unit element attachment bar provided with the antenna element array along the circumferential direction of the cylinder base, it is possible to transmit and receive radio waves in 360-degree directions and improve the beamforming resolution.

Second, individual element arrays are formed to form at least two 90 degree polarization groups in the unit element attachment bar, and a feeding structure through matching with the RF IC is adopted to enable various combinations of beam angle formation. It has an effect that can be improved.

Third, RF ICs corresponding to the element arrays are integrally formed on the front and rear surfaces of the PCB constituting the unit element attachment bar, thereby minimizing insertion loss.

1 is a schematic diagram showing the concept of the fifth generation Xhaul network system,
Figure 2 is a perspective view showing an embodiment of a millimeter wave uniform circular array antenna according to the present invention,
3 is a front view of FIG. 2,
4 is a basic layout view of the device array of FIG. 2;
5 is a perspective view showing another embodiment of a uniform circular array antenna for millimeter waves according to the present invention;
FIG. 6 is a basic layout view of the device array of FIG. 5;
FIG. 7 is a view showing a layout of device arrays and RF ICs on one side and the other side of the PCB constituting the unit element attachment bar.
FIG. 8 is a block diagram illustrating beamforming processing according to the structure of FIG. 7.

Some embodiments of the invention will now be described in detail with reference to 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 addition, in describing the embodiments of the present invention, if it is determined that the detailed description of the related well-known configuration or function interferes with the understanding of the embodiments of the present invention, the detailed description thereof will be omitted.

Throughout the specification, when a part is said to "include", "includes" a certain component, it means that it can further include other components, not to exclude other components unless otherwise stated. .

1 is a schematic diagram showing the concept of a fifth generation Xhaul network system.

One embodiment of the millimeter wave uniform circular array antenna according to the present invention is based on the fifth generation Xhaul network system 10. The fifth generation Xhaul network system 10 receives the 20 Gbps frequency band signal transmitted from the hub system 40 or converts the signal to the 10 Gbps frequency band and transmits the signal to the hub system 40 as shown in FIG. 1. It may include a terminal.

More specifically, the fifth generation Xhaul Transport Network System 10 is constructed by a combination of a core network emulator 20 and an Xhole mobility controller 30 serving as a control tower of a mobile communication network. It is provided to control the system 40 as a whole.

Here, one hub system 40 may be provided to interwork with a plurality of terminal systems 50a and 50b, as shown in FIG. 1. Up to 10 Gbps of broadband wireless transmission may be provided per hub system 40 and each terminal 50a, 50b described below.

Terminals 50a and 50b are typically fixed terminals 50a which are provided in a fixed state in which a large number of mobile terminal users are covered and cover data transmission / reception in the region.

Recently, however, the mobile terminal 50b has been widely commercialized as a newly proposed mobile transmission network technology that can be mounted on a vehicle and provide mobility compared to the fixed terminal 50a described above to enable flexible network configuration and wideband traffic reception. .

In particular, the mobile Xhaul network system 10 by the mobile terminal 50b is a wireless (dynamic) based network, and can achieve CAPEX / OPEX savings by enabling the network to be dynamically operated in various traffic environments. In addition, by providing mobility to a cell (including a small cell), it is possible to effectively provide a mobile cell (vehicle, train, ship, etc.) or a temporary cell construction necessary for a disaster situation to generate a congested traffic.

The fifth generation Xhaul network system 10 corresponds to a millimeter wave band-based high-speed (10 Gbps per link) wireless transmission device for constructing a mobile Xhaul network.

Here, a plurality of element arrays patch-combined with a plurality of antenna elements provided in each terminal 50a or 50b may perform beamforming having directivity in a predetermined direction for data transmission and reception with a hub system or a plurality of mobile terminals. An embodiment of the millimeter wave uniform circular array antenna according to the present invention, which can be arranged to produce an array, is characterized in that it has a uniform circular array form of a plurality of element arrays optimally designed to ensure improved beamforming resolution. Related.

Figure 2 is a perspective view showing an embodiment of a millimeter wave uniform circular array antenna according to the present invention, Figure 3 is a front view of Figure 1, Figure 4 is a basic layout of the element array of Figure 2, Figure 5 is a present invention FIG. 6 is a perspective view illustrating another example of the uniform circular array antenna for millimeter wave, and FIG. 6 is a basic layout view of the device array of FIG. 5.

One embodiment 100 of the millimeter wave uniform circular array antenna according to the present invention is spaced apart from the upper portion of the cylinder base 101, the cylinder base 101 disposed at the bottom, as shown in Figs. The cylinder cover 103 and the lower end arranged in parallel are coupled to the circumferential upper surface of the cylinder base 101, and the upper end is coupled to the circumferential lower surface of the cylinder cover 103, and a plurality of element arrays 130 patch-combined with a plurality of antenna elements. ) Includes a plurality of device attachment bars 110 to which are attached.

Here, the plurality of device attachment bars 110 may be provided as a PCB on which the above-described plurality of device arrays 130 may be directly mounted. The plurality of unit element attachment bars 110 may be arranged to be spaced apart at equal intervals along the circumferential direction of the cylinder base 101 and the cylinder cover 103.

The cylinder base 101 and the cylinder cover 103 may be made of the same size and the same material. In addition, the cylinder base 101 and the cylinder cover 103 may be formed in a circular plate shape, but the cylinder base 101 and the cylinder cover 103 do not necessarily need to be formed in a circular plate, but are formed in a polygonal shape. It is also possible. That is, the cylinder base 101 and the cylinder cover 103 include the description 'cylinder' in the name of the component, but it includes the shape of the polygon as well as circular.

The plurality of element attachment bars 110 are arranged at equal intervals along a circumference (border) of the cylinder base 101 and the cylinder cover 103, so that the cylinder base 101 and the cylinder cover 103 formed entirely of discs. A cylindrical outer circumferential surface can be formed together with.

In addition, the outer surface and the inner surface of the plurality of device attachment bar 110 is preferably formed in a plane to form a polygonal pillar surface, as shown in Figures 2 to 4.

However, the outer side and the inner side of the plurality of element attachment bars 110 are not necessarily limited to being formed in a planar shape, and the arrangement of the elements for polarization characteristics of the plurality of antenna elements attached to the outer side is possible. It will also be possible to form a curved shape depending on the shape of the signal output to / from the arrays 130.

In an embodiment of the millimeter wave uniform circular array antenna according to the present invention, as shown in FIG. 2, a device array 130 having a patch combination of a plurality of antenna elements in a 2 × 2 array form is mounted on the unit element attachment bar 110. Can be attached in the direction.

Referring to FIG. 2, four antenna elements may be arranged in the element array 130, and at least a half wavelength λ / 2 of a carrier frequency is maintained between each antenna element. This is to avoid signal interference caused when the spacing between the patch-combined antenna elements is arranged at intervals less than half the wavelength of the frequency, and if the spacing is larger than the half wavelength (λ / 2) of the carrier frequency, the signal interference is to be avoided. However, there is a problem that the size of the antenna increases, so it is preferable to set the distance between each antenna element to a half wavelength (λ / 2) of the carrier frequency.

Meanwhile, the plurality of device attachment bars 110 are arranged to be divided into a plurality of sectors based on the center (centrifugal) of the cylinder base 101 and the cylinder cover 103, and the device array 130 of the specific device attachment bar is disposed. The distance between the antenna elements arranged in the antenna element and the antenna elements arranged in the element array 130 of the adjoining element attachment bar is preferably maintained at a half wavelength (λ / 2) or more of the carrier frequency to avoid signal interference.

In one embodiment of the millimeter wave uniform circular array antenna according to the present invention, the device array 130 patch-combined in the form of a 2Ｘ2 array is attached to the unit element attachment bar 110 in the vertical direction, and each unit element is attached. By dividing the bar 110 into an optimal number of sectors along the circumferential direction of the cylinder base 101 and the cylinder cover 103, the beamforming resolution can be improved.

More specifically, referring to FIGS. 2 to 4 in which the shape of the millimeter wave uniformly circular array antenna according to the embodiment of the present invention is provided in a cylindrical shape, 24 pieces in a limit that satisfies the above-described spacing condition between the antenna elements are provided. Adjacent unit element attachment bars 110 may be disposed to have sectors.

For example, in the case of adopting a structure having 24 sectors, the beamforming resolution is improved by 6 times compared to the structure in which an antenna element array is arranged in four sectors of a rectangular structure to transmit and receive radio waves in the 360 degree direction. There is.

In addition, the millimeter wave frequency characteristics suitable for 5G communication, such as 28GHz or less, the linearity is stronger than the cellular band (3GHz or less) frequency, but lacks the diffraction and reflection characteristics, the line-of-sight (LOS) to maximize the desired performance However, compared to the structure in which the antenna element arrays are arranged in four sectors of the conventional rectangular structure, the beamforming characteristics can be improved through a uniform circular array.

In addition, referring to the embodiments of FIGS. 5 and 6 to be described later, in which the form of the millimeter wave uniform circular array antenna according to the embodiment of the present invention is provided in a semi-cylindrical shape, the spacing condition between the antenna elements described above is the same principle. Adjacent unit element attachment bars 110 may be disposed to have 12 sectors to a satisfactory limit.

However, the number of sectors formed by the unit element attachment bar 110 is not necessarily limited to 24 and 12 described above. That is, the reason why the above-mentioned interval of frequency half wavelength or more is that when the antennas having the same characteristics are disposed within the interval within the frequency half wavelength, the channel characteristics become similar due to the pattern similarity between the antennas, thereby reducing the diversity gain or multiplexing gain. In order to solve the problem, it is not limited to the number of 24 and 12 sectors as long as the gap condition between the plurality of antenna elements is satisfied.

Figure 5 is a perspective view showing another embodiment of a millimeter wave uniform circular array antenna according to the present invention, Figure 6 is a basic layout of the element array of FIG.

2 to 4, the number of element attachment bars 110 having a cylinder base 101 and a cylinder cover 103 in a circular plate shape and forming an outer surface thereof is shown. Relates to an embodiment in which the number of cylinders is 24 to fully cover the surrounding 360 degrees, in spite of the designation of the cylinder base 101 and the cylinder cover 103, as shown in FIGS. 5 and 6, the cylinder base. The 101 and the cylinder cover 103 may be formed in a semicircular plate shape. In this case, the angles formed between the adjacent element attachment bars 110 may be around 12 element attachment bars 110 in such a manner that the distance between the plurality of antenna elements can maintain the interval of more than half wavelength (λ / 2) of the carrier frequency. It may be implemented in another embodiment 100a to cover 180 degrees.

As an embodiment for improving beamforming characteristics such as beamforming resolution to the maximum, the above-described embodiment 100 covering 360 degrees is suitable, but assembling of a coupling part provided inside the device attachment bar 110 is performed. In consideration of the working aspect, another embodiment 100a formed in a semicircle to cover 180 degrees may be advantageous, and although not shown in the drawings, two millimeter wave uniform circular array antennas according to the present embodiment 100a may be used as necessary. In combination with the above-described embodiment (100) it is also possible to implement.

FIG. 7 is a diagram illustrating a layout of device arrays and RF ICs on one and other surfaces of a PCB constituting a unit device attachment bar, and FIG. 8 is a block diagram illustrating beamforming processing according to the structure of FIG. 7.

Each of the plurality of element attachment bars 110 disclosed in one embodiment 100 and the other embodiment 100a described above is patched into a plurality of antenna elements, as referenced in FIGS. 7 and 8. It serves to provide an attachment surface to which the device array 130 is attached.

That is, as shown in FIG. 7, a plurality of device arrays 130 (131 to 134) are mounted on the outer surface of the plurality of device attachment bars 110 configured as PCBs to implement respective polarization characteristics. On the inner surface of the two element attachment bars 110, a plurality of RF ICs (231 to 234) that independently control a single element array 130 for implementing one polarization characteristic may be integrally mounted. have.

The RF ICs 231 to 234 are means for performing processing such as amplifying, filtering, and the like on the RF signal, and may be referred to by other names. For example, the RF ICs 231 to 234 may be referred to as a transceiver, an RF processor, or the like.

Here, the plurality of device arrays 130 are arranged in a plurality in the vertical direction on the outer surface of one element attachment bar 110 (hereinafter referred to as a 'single element attachment bar 110'), the plurality of elements The array 130 may group two adjacent unit arrays (eg, reference numerals 131 and 132) forming 90 degree polarizations into one 90 degree polarization group. Referring to FIG. 7, the plurality of device arrays 130 are attached to the outer surface of the single device attachment bar 110 in the vertical direction with four spaced apart from each other, and the four device arrays 130 are divided into two 90 degree polarization groups. 140 and 150 may be formed.

In more detail, the four device arrays 130 may include the first device array 131 disposed on the uppermost side, the second device array 132 disposed below the first device array 131, and the second device. The third device array 133 provided below the array 132 and the fourth device array 134 provided below the third device array 133 are included.

Here, the first device array 131 is 0 degrees, the second device array 132 is 90 degrees, and the third device array 133 is 45 degrees and the fourth device array 134 in the clockwise direction with respect to the vertical line. May be provided to implement a polarization characteristic of 135 degrees.

Accordingly, the first device array 131 and the second device array 132 form a first polarization group 140 for implementing a 90 degree polarization characteristic, respectively, and the third device array 133 and the fourth device array ( 134 may form a second polarization group 150 that respectively implements a 90 degree polarization characteristic.

In addition, as shown in FIG. 7, the inner surface of the plurality of device attachment bars 110 including the PCB may include a first RF IC corresponding to the above-described first to fourth device arrays 131 to 134. Fourth RF ICs 231 to 234 may be mounted. As such, a plurality of element arrays 130 and a plurality of RF ICs 230 corresponding thereto are integrally provided on inner and outer surfaces of the plurality of element attachment bars 110, and in particular, RF ICs 231 to 234. As the unitary structure has a one-to-one correspondence to the unit element array, individual antenna elements in the form of 2 × 2 arrays forming the unit element array 130, for example, 4 constituting the first element array 131 of FIG. 7. The power loss, that is, insertion loss, generated when the RF IC is inserted into each of the antenna elements, respectively, has an advantage of greatly reducing.

Each of the RF ICs 231 to 234 may be independently provided to process transmit and receive frequency signals of the first to fourth device arrays 131 to 134. Therefore, it is natural that higher resolution can be realized by forming various beam angles through individual control of the plurality of device arrays 130.

In comparison, the embodiment of the millimeter wave uniform circular array antenna according to the present invention and the 'prior art 1' described in the above-mentioned 'Background art of the invention' item, respectively, have the same size and the same size. In the case of arranging the element attachment bar 110, the prior art 1 has to be arranged four times in the circumferential direction, and as a result, a predetermined direction than the one embodiment of the present invention (the 'predetermined direction' is a number of terminal users. Beam angle formation for any one of) is inevitably large.

That is, in forming the beamforming for the predetermined direction, embodiments of the present invention can control the polarization angle of each of the plurality of device arrays 130, thereby increasing the adaptability to a plurality of terminal users.

More specifically, the embodiments 100a and 100b of the millimeter wave uniform circular array antenna according to the present invention can be used in a number of devices to be used in a millimeter wave frequency band such as 28 GHz suitable for 5G communication, as referred to in FIG. 8. A power supply line may be constructed through mutual matching between the array 130 and the plurality of RF ICs 231 to 234.

Accordingly, as shown in FIG. 8, various beamforming characteristics may be implemented by individually controlling the above-described plurality of device arrays 130 using weight and calibration information from a modem.

Here, the up / down frequency converter (UpCU) is divided into a transmission path and a reception path, and the up / down converter converts the input baseband I / Q signal into a set frequency band signal as a main function of the transmission path. It has conversion function and gain adjustment function with variable attenuation of set dB, and main function of receive path keeps down conversion function and high frequency signal level which make RF signal of received set frequency band into I / Q baseband signal. May have an AGC function. Since the function of the specific UDCU is not strongly related to the nature of the embodiments of the present invention, a detailed description thereof will be omitted.

However, in the conventional technology introduced above, antenna elements exhibiting the same angle polarization characteristics are arranged in one vertically arranged long sector, which is a limitation in that the power supply line must be constructed in a single direction. Alternatively, in the case of one embodiment of the present invention, a plurality of element arrays 130 are all provided in one sector in the vertical direction, and as shown in FIG. 8, control of the RF IC by the UDCU is independent and selective. In this regard, a variety of beam forming control associated with the Weight & Calibration Process on the drawing may be possible.

That is, various beamforming characteristics may be realized by adjusting selective activation and beam angles of the required device arrays among the plurality of device arrays 130. In this way, by controlling the individual output of the plurality of device array 130, it is possible to consider the interference interference according to the surrounding environment, or hub orientation control in consideration of the position of the hub system 40 can significantly improve the data communication performance have.

As described above, embodiments of the millimeter wave uniform circular array antenna according to the present invention have various beamforming characteristics as compared to the 'prior art 1' introduced in the 'Technological Background of the Invention' having a power supply structure limited to cellular communication. Of course, it also discloses a very advantageous configuration in the millimeter wave frequency band of 5G communication.

That is, in the conventional smart antenna, a plurality of polarization antenna elements of a predetermined angle are arranged vertically and vertically, and a plurality of polarization antenna elements of different angles are arranged adjacent thereto, so that the millimeter wave uniform circular array antenna according to the present invention. The configuration of the device array 130 is contrasted with the possible control.

In addition, embodiments of the millimeter wave uniform circular array antenna according to the present invention, the 'prior technology 2' introduced in the 'Background technology of the invention' item is installed in the loop of the moving object and the wireless connection with the target satellite on the upper Unlike this possible formation of only a radiation pattern, the beamforming characteristics can be greatly improved in that beam angles having four different polarization characteristics can be formed in a single sector implemented by a single element attachment bar 110. have.

In the above, embodiments of the millimeter wave uniform circular array antenna according to the present invention have been described in detail with reference to the accompanying drawings. However, the embodiments of the present invention are not necessarily limited to the above-described embodiments, and it is natural that various modifications and equivalents can be made by those skilled in the art to which the present invention pertains. something to do. Therefore, the true scope of the present invention will be determined by the claims described below.

100: uniformly circular array antenna for millimeter wave
101: cylinder base 103: cylinder cover
110: element attachment bar 110a: outer surface
110b: inner side 130: element array
131: first element 132: second element
133: third device 134: fourth device
140: first polarization group 150: second polarization group
231-234: RF IC

Claims (10)

A cylinder base disposed below;
A cylinder cover disposed parallel to an upper portion of the cylinder base; And
A plurality of element attachment bars having a lower end coupled to an upper circumferential surface of the cylinder base and an upper end coupled to a circumferential lower surface of the cylinder cover and having at least one element array patched with a plurality of antenna elements attached to an outer side; Including,
And the plurality of element attachment bars are arranged in the circumferential direction of the cylinder base and the cylinder cover with a plurality of equally spaced circular array antennas for millimeter waves. The method according to claim 1,
The plurality of element attachment bars consider a beamforming angle formed on a millimeter wave band frequency according to the plurality of antenna elements attached to each of the plurality of element attachment bars, wherein the plurality of antenna elements are mutually half-wavelength (λ / 2) of the carrier frequency. A uniform circular array antenna for millimeter waves arranged in a number capable of maintaining a distance of more than). The method according to claim 1,
The cylinder base and the cylinder cover is a circular circular array antenna for millimeter wave formed in a circular shape. The method according to claim 1,
The cylinder base and the cylinder cover is a semi-circular uniform circular array antenna for millimeter wave. The method according to any one of claims 1 to 4,
The plurality of device arrays may be disposed in a plurality of device arrays in an up and down direction on an outer surface of the single device attachment bar, and the plurality of device arrays may include two adjacent unit arrays that form a 90 degree polarization to each other as one 90 degree polarization group. Uniform circular array antennas for millimeter waves grouped together. The method according to claim 5,
And said plurality of element arrays are arranged in four places in an up and down direction on an outer surface of said single element attachment bar, said four element arrays forming two 90 degree polarization groups. The method according to claim 6,
A plurality of element arrays arranged in the four places, the millimeter wave uniform circular array antenna can be mixed in the range of the single element attachment bar so that adjacent element arrays have a polarization characteristic of 90 degrees. The method according to claim 7,
The four device arrays may include a first device array provided at an uppermost side, a second device array provided below the first device array, a third device array provided below the second device array, and the third device array. And a fourth device array provided under the device array.
The first element array is 0 degrees, the second element array is 90 degrees, the third element array 45 degrees and the fourth element array is a uniform circular array antenna for millimeter wave for implementing a polarization characteristic of 135 degrees. The method according to claim 1,
Millimeter wave uniform circular array antenna is connected to the inner surface of the plurality of element attachment bars, a plurality of RF ICs respectively corresponding to the plurality of element arrays. The method according to claim 9,
A power supply line through mutual matching is established between the plurality of device arrays and the plurality of RF ICs,
A uniform circular array antenna for millimeter waves capable of selective activation of the plurality of device arrays and beam angle adjustment.

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