KR102180722B1 - Slot array antenna and design method thereof - Google Patents

Abstract

The present invention relates to a slot array antenna, to a design device, and to a design method thereof. According to one embodiment, the design device of the slot array antenna comprises: a setting unit setting a power ratio and a phase value for each of a plurality of unit cells formed on a radiation slot layer; a slot offset determination unit determining a slot offset of each slot provided in each of the plurality of unit cells as a value corresponding to the set power ratio; and a patch size determination unit determining the size of each of transmissive patches formed on a transmission layer corresponding to each of the plurality of unit cells as the size corresponding to a set phase value and the determined slot offset.

Description

Slot array antenna and its design method {SLOT ARRAY ANTENNA AND DESIGN METHOD THEREOF}

The present invention relates to a slot array antenna, a design apparatus and a design method thereof, and more particularly, to a technical idea for optimizing a slot offset and design parameters of a slot array antenna.

The slot array antenna has different antenna characteristics depending on the shape of the waveguide, the shape, size and length of the slot, the arrangement of the slots, and the type of feeding of a feeder.

However, known slot array antennas require an active element such as an amplifier or attenuator to control the amplitude of each radiating element, so that design is complicated and cost is high.

Korean Patent Registration No. 10-1605030 "Dual polarized waveguide slot array antenna"

An object of the present invention is to provide a slot array antenna capable of controlling amplitude by optimizing a slot offset, a design apparatus and a design method thereof.

In addition, the present invention is to provide a slot array antenna capable of controlling a phase value by disposing a transmissive patch on top of each slot, a design apparatus and a design method thereof.

In addition, the present invention provides a slot array antenna capable of reducing design cost and improving efficiency of a multi-beam focusing and beam steering antenna by controlling amplitude and phase values without an active element such as an amplifier or attenuator, and a design apparatus and design method thereof. I want to.

The apparatus for designing a slot array antenna according to an embodiment includes a setting unit for setting a power ratio and a phase value for each of a plurality of unit cells formed on a radiation slot layer, and a setting unit for each of the plurality of unit cells. A slot offset determination unit that determines the slot offset of each of the provided slots as a value corresponding to the set power ratio, and the size of each of the transmissive patches formed on the transmission layer corresponding to each of the plurality of unit cells are set and determined It may include a patch size determiner that determines the size corresponding to the slot offset.

According to one side, the slot offset may be a distance value between a reference line preset in each of the plurality of unit cells and a slot provided in each of the plurality of unit cells.

According to one side, the setting unit sets the power ratio and phase value for each of the plurality of unit cells by calculating a reference phase value for the target antenna, a distance value between a plurality of unit cells, and an angle formed by each of the plurality of unit cells and the target antenna. I can.

According to one side, an apparatus for designing a slot array antenna according to an embodiment includes an aperture width, an open length, and an aperture formed on the radiation slot layer through impedance matching based on the determined slot offset. It may further include a parameter determiner for determining at least one parameter value among the offset (aperture offset).

According to one side, the radiation slot layer may further include at least one upper wall and a side wall that divide the plurality of unit cells into a plurality of regions.

According to one side, the parameter determining unit determines at least one parameter value of the aperture width, which is the distance between the upper walls, the opening length, which is the distance between the virtual line and the sidewall based on the upper wall, and the aperture offset, which is the distance between the virtual line based on the upper wall and the sidewall. You can decide.

According to one side, the parameter determining unit determines the aperture width at which the reflection coefficient is minimum in response to the determined slot offset, determines the aperture length at which the reflection coefficient is minimum in the state where the aperture width is determined, and the aperture length is determined. The aperture offset at which the reflection coefficient is minimum can be determined.

The slot array antenna according to an embodiment includes a plurality of unit cells, a radiation slot layer in which a slot provided in each of the plurality of unit cells is formed, and a transmission layer in which a transparent patch corresponding to each of the plurality of unit cells is formed. And the position of each slot is determined by a slot offset based on a power ratio preset for each of the plurality of unit cells, and the size of each of the transmissive patches is a preset phase value for each of the plurality of unit cells. ) And a size corresponding to the slot offset.

According to one side, the slot offset may be a distance value between a reference line preset in each of the plurality of unit cells and a slot provided in each of the plurality of unit cells.

According to one side, the power ratio and the phase value may be set by calculating a reference phase value for the target antenna, a distance value between a plurality of unit cells, and an angle formed by each of the plurality of unit cells and the target antenna.

According to one side, the radiation slot layer further includes at least one upper wall and sidewall that divides the plurality of unit cells into a plurality of regions, and an aperture width, which is an interval between the upper walls, and a virtual line and sidewall based on the upper wall. A parameter value of at least one of an open length, which is an interval, and an aperture offset, which is an interval between virtual lines based on an upper wall and a sidewall, may be determined through impedance matching based on a slot offset.

The method of designing a slot array antenna according to an embodiment includes the steps of setting a power ratio and a phase value for each of a plurality of unit cells formed on a radiation slot layer in a setting unit, and determining a slot offset. Determining the slot offset of each of the slots provided in each of the plurality of unit cells in the unit as a value corresponding to the set power ratio, and the transmittance formed on the transmission layer corresponding to each of the plurality of unit cells in the patch size determination unit It may include determining the size of each patch as a size corresponding to the set phase value and the determined slot offset.

According to one side, the method of designing a slot array antenna according to an embodiment includes an aperture width and an open length formed on a radiation slot layer through impedance matching based on a slot offset determined by a parameter determining unit. ) And determining at least one parameter value of an aperture offset.

According to an embodiment, the amplitude can be controlled by optimizing the slot offset, and the phase value can be controlled by disposing a transparent patch on each slot.

According to an embodiment, by controlling amplitude and phase values without an active element such as an amplifier or attenuator, it is possible to reduce design cost and improve efficiency of a multi-beam focusing and beam steering antenna.

1 is a diagram illustrating an apparatus for designing a slot array antenna according to an exemplary embodiment.
2A to 2B are diagrams for explaining a unit cell according to an embodiment.
3 is a view for explaining the radiation characteristics of the radiation slot layer according to an embodiment.
4 is a diagram for describing an example of setting a power ratio and a phase value in an apparatus for designing a slot array antenna according to an exemplary embodiment.
5 to 6 are diagrams for explaining a slot array antenna according to an embodiment according to an embodiment.
7A to 7C are diagrams for explaining an example of determining the size of each transparent patch in the apparatus for designing a slot array antenna according to an embodiment.
8 to 9 are diagrams for explaining characteristics of a slot array antenna according to an embodiment.
10 is a diagram for describing a method of designing a slot array antenna according to an embodiment.

Specific structural or functional descriptions of the embodiments according to the concept of the present invention disclosed in this specification are exemplified only for the purpose of describing the embodiments according to the concept of the present invention, and embodiments according to the concept of the present invention They may be implemented in various forms and are not limited to the embodiments described herein.

Since the embodiments according to the concept of the present invention can apply various changes and have various forms, the embodiments will be illustrated in the drawings and described in detail herein. However, this is not intended to limit the embodiments according to the concept of the present invention to specific disclosed forms, and includes changes, equivalents, or substitutes included in the spirit and scope of the present invention.

Terms such as first or second may be used to describe various elements, but the elements should not be limited by the terms. The above terms are only for the purpose of distinguishing one component from other components, for example, without departing from the scope of rights according to the concept of the present invention, the first component may be named as the second component, Similarly, the second component may also be referred to as a first component.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. Should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle. Expressions describing the relationship between components, for example, "between" and "just between" or "directly adjacent to" should be interpreted as well.

The terms used in the present specification are only used to describe specific embodiments and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present specification, terms such as "comprise" or "have" are intended to designate that the specified features, numbers, steps, actions, components, parts, or combinations thereof exist, but one or more other features or numbers, It is to be understood that the presence or addition of steps, actions, components, parts, or combinations thereof, does not preclude the possibility of preliminary exclusion.

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

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, the scope of the patent application is not limited or limited by these embodiments. The same reference numerals shown in each drawing indicate the same members.

1 is a diagram illustrating an apparatus for designing a slot array antenna according to an exemplary embodiment.

Referring to FIG. 1, the apparatus 100 for designing an antenna according to an exemplary embodiment may control an amplitude by optimizing a slot offset.

In addition, the antenna design apparatus 100 may control a phase value by disposing a transparent patch on each slot.

In addition, the antenna designing apparatus 100 may control amplitude and phase values without an active element such as an amplifier or attenuator, thereby reducing design cost and improving efficiency of a multi-beam focusing and beam steering antenna.

To this end, the antenna design apparatus 100 may include a setting unit 110, a slot offset determining unit 120, and a patch size determining unit 140. In addition, the antenna designing apparatus 100 may further include a parameter determining unit 130.

Specifically, the setting unit 110 according to an embodiment may set a power ratio and a phase value for each of a plurality of unit cells formed on the radiation slot layer.

For example, when the antenna is a 6x4 slot array antenna, the radiation slot layer may include 24 unit cells and slots.

According to one side, the setting unit 110 calculates a reference phase value for a target antenna, a distance value between a plurality of unit cells, and an angle formed by each of the plurality of unit cells and the target antenna, so that the power ratio for each of the plurality of unit cells and You can set the phase value.

An example of setting a power ratio and a phase value for each of a plurality of unit cells according to an embodiment will be described in more detail with reference to FIG. 4 in the following embodiment.

The slot offset determiner 120 according to an embodiment may determine a slot offset of each slot provided in each of the plurality of unit cells as a value corresponding to a set power ratio.

In other words, the slot offset determiner 120 may control the output amplitude of each slot by arranging different positions of slots provided in each of the plurality of unit cells.

According to one side, the slot offset may mean a distance value between a reference line preset in each of the plurality of unit cells and a slot provided in each of the plurality of unit cells.

An example of a slot offset according to an embodiment will be described in more detail with reference to FIGS. 2A to 2B in the following embodiments.

According to one side, the parameter determination unit 130 includes an aperture width, an open length, and an aperture offset formed on the radiation slot layer through impedance matching based on the determined slot offset. At least one parameter value may be determined.

Specifically, the radiation slot layer further includes at least one upper wall and a side wall for dividing the plurality of unit cells into a plurality of regions, and the parameter determining unit 130 includes an aperture width, which is an interval between the upper walls, and a virtual At least one parameter value may be determined from an opening length, which is an interval between the line and the sidewall, and an aperture offset, which is an interval between the virtual line based on the upper wall and the sidewall.

According to one side, the parameter determination unit 130 determines the aperture width at which the reflection coefficient is minimum in response to the determined slot offset, determines the aperture length at which the reflection coefficient is minimum in the state where the aperture width is determined, and In a state in which the length is determined, an aperture offset at which the reflection coefficient is minimum can be determined.

The patch size determiner 140 according to an embodiment may determine the size of each of the transmissive patches formed on the transmission layer corresponding to each of the plurality of unit cells as a size corresponding to a set phase value and a determined slot offset.

In other words, the patch size determination unit 140 may optimize the size of the transmissive patch in consideration of the transmissive characteristics of the transmissive patches that change due to different slot offsets of each slot.

An example of determining the size of each of the permeable patches according to an exemplary embodiment will be described in more detail with reference to FIGS. 7A to 7C.

2A to 2B are diagrams for explaining a unit cell according to an embodiment.

2A to 2B, reference numeral 210 denotes a unit cell formed on the radiation slot layer according to an embodiment, and reference numeral 220 denotes an H-field (H) according to the position of the slot on the unit cell. -field) characteristics.

According to reference numeral 210, the antenna design apparatus according to an embodiment uses a slot offset of each of the slots 212 provided in each of the plurality of unit cells 210 to a value corresponding to a preset power ratio. You can decide.

For example, the slot offset may be a distance value between a reference line 211 preset in each of the unit cells 210 and a slot 212 provided in each of the unit cells 210.

According to reference numeral 220, when the position (slot offset) of the slot on the unit cell 210 is changed, it can be seen that the size of the output H-field changes.

That is, the antenna designing apparatus according to an exemplary embodiment may control the output amplitude of each slot by disposing positions (slot offsets) of slots provided in each of the plurality of unit cells differently.

3 is a view for explaining the radiation characteristics of the radiation slot layer according to an embodiment.

Referring to FIG. 3, reference numeral 300 denotes a radiation slot layer designed by a design apparatus for a slot array antenna according to an embodiment.

According to reference numeral 300, the radiation slot layer according to an embodiment may be designed as a 6x4 slot array antenna, and simultaneously implement a beam forming plane and a beam steering plane.

In other words, the slot array antenna according to an embodiment is designed to simultaneously focus beams using the principle of superposition, and corresponds to both targets located in the near-field and far-field. It can be designed to work.

For example, the beam focusing point of the radiation slot layer according to an embodiment may be a central part of unit cells arranged in 1x2 and 1x3, and may be located about 10cm away from the array antenna. In addition, the beam steering point may be located 25 degrees from the beam steering plane.

More specifically, when the slot array antenna according to an embodiment is a 6x4 slot array antenna, the antenna design apparatus according to the embodiment includes power and phase of each unit cell for simultaneously implementing beam focusing and beam steering. The phase can be set as shown in Tables 1 and 2 below.

For example, the power and phase values of each unit cell listed in Tables 1 and 2 are a reference phase value for a target antenna, a distance value between a plurality of unit cells, and each of a plurality of unit cells and a target antenna. It can be calculated through the calculation of the angle formed by.

More specifically, the apparatus for designing an antenna according to an embodiment sets a slot offset value to set the power ratio of the unit cells located in the 1st row and 1st column to '3.72' in the 6x4 unit cell, and the slot offset of the unit cells located in the 1st row and 1st column. It is determined as a value, and a slot offset value that causes the power ratio of the unit cells located in the first row and the second column to be set to '4.59' may be determined as the slot offset of the unit cells located in the first row and the second column.

For a more specific example, the antenna design apparatus according to an embodiment may set a slot offset value (unit: mm) of each unit cell according to Table 1 as shown in Table 3 below.

In addition, the antenna design apparatus according to an embodiment sets the size value of the transmissive patch so that the phase value of the unit cells located in the first row and the first column is set to'-45.0' in the unit cells of the 6x4 unit cells. The size of the permeable patch that is determined by the size of the corresponding permeable patch and the phase value of the unit cells located in the first row and the second column is set to'-160.0' is the size of the transparent patch corresponding to the unit cells located in the first row and the second column. Can be determined by value.

4 is a diagram for describing an example of setting a power ratio and a phase value in an apparatus for designing a slot array antenna according to an exemplary embodiment.

4, reference numeral 400 denotes a wireless communication environment of a slot array antenna according to an embodiment.

According to reference numeral 400, a slot array antenna according to an embodiment may perform wireless communication with a target antenna using N unit cells (where N is a positive integer).

Specifically, the apparatus for designing an antenna according to an embodiment may set a power ratio and a phase value for each of a plurality of (N) unit cells formed on the radiation slot layer.

,

), 복수의 단위셀간의 거리값(d) 및 복수의 단위셀 각각과 타겟 안테나가 형성하는 각도(

)를 연산하여 복수의 단위셀 각각에 대한 전력비 및 위상값을 설정할 수 있다. According to one side, the apparatus for designing an antenna according to an embodiment includes a reference phase value for a target antenna (

,

), a distance value (d) between a plurality of unit cells, and an angle formed by each of the plurality of unit cells and the target antenna (

) Can be calculated to set the power ratio and phase value for each of the plurality of unit cells.

More specifically, the apparatus for designing an antenna according to an embodiment includes voltages applied to a plurality of unit cells in order to simultaneously transmit wireless power or wireless signals to a target antenna located in a near field and a target antenna located in a far field. The size (amplitude) and phase value may be calculated, and for this purpose, the distance to the target antenna may be measured using at least one of a BLE module, a camera module, and a beacon module.

The antenna design apparatus according to an exemplary embodiment may determine whether a target antenna is located in a near field or a far field by using the reference distance D calculated through Equation 1 below.

[Equation 1]

는 송신 신호의 파장값을 나타낸다. Here, d is a distance value between a plurality of unit cells,

Represents the wavelength value of the transmission signal.

) 및 위상값(

)을 산출할 수 있으며, 산출되는 전압의 크기(

)를 이용하여 복수의 단위셀 각각에 대한 전력비를 산출할 수 있다. In addition, the antenna design apparatus according to an embodiment includes the magnitude of the voltage applied to each of the plurality of unit cells through Equations 2 to 4 below (

) And phase value (

) Can be calculated, and the magnitude of the calculated voltage (

) Can be used to calculate the power ratio for each of the plurality of unit cells.

[Equation 2]

와

는 각각 근거리장에 위치한 타겟 안테나와 원거리장에 위치하는 타겟 안테나에 대한 기준위상이며,

는 공기중 전파상수이고,

는 타겟 안테나의 위치를 나타내며, d는 단위셀간의 거리를 나타내고,

는 단위셀에서 타겟의 방향으로 빔을 형성하는 각도를 나타내며, k는 단위셀의 위치를 표현하는 상수를 나타낸다.Here, A and B are weight values for the target antenna located in the near field and the target antenna located in the far field, respectively,

Wow

Is the reference phase for the target antenna located in the near field and the target antenna located in the far field, respectively,

Is the propagation constant in air,

Represents the location of the target antenna, d represents the distance between unit cells,

Denotes the angle at which a beam is formed in the direction of the target in the unit cell, and k denotes a constant representing the position of the unit cell.

)은 수학식1을 통해 산출된 기준거리(D) 보다 일실시예에 따른 안테나의 설계 장치에서 측정한 타겟 안테나와의 거리 값이 작은 경우(타겟 안테나가 근거리장에 위치하는 것으로 판단되는 경우), 하기 수학식3을 통해 산출될 수 있다. In Equation 2, the phase value (

) Is smaller than the reference distance (D) calculated through Equation 1 with the target antenna measured by the antenna design apparatus according to an embodiment (when it is determined that the target antenna is located in the near field) , Can be calculated through Equation 3 below.

[Equation 3]

)은 수학식1을 통해 산출된 기준거리(D) 보다 일실시예에 따른 안테나의 설계 장치에서 측정한 타겟 안테나와의 거리 값이 큰 경우(타겟 안테나가 원거리장에 위치하는 것으로 판단되는 경우), 하기 수학식4를 통해 산출될 수 있다. In addition, in Equation 2, the phase value (

) Is a case where the distance value to the target antenna measured by the antenna design apparatus according to an embodiment is larger than the reference distance (D) calculated through Equation 1 (when it is determined that the target antenna is located in the far field) , May be calculated through Equation 4 below.

[Equation 4]

5 to 6 are diagrams for explaining a slot array antenna according to an embodiment according to an embodiment.

In other words, FIGS. 5 to 6 are diagrams for explaining an example of a slot array antenna designed by a design apparatus for a slot array antenna according to an embodiment described with reference to FIGS. 1 to 4. Among the contents described through, descriptions overlapping with those described through the apparatus for designing a slot array antenna according to an embodiment will be omitted.

5 to 6, reference numeral 500 denotes a slot array antenna according to an exemplary embodiment, and reference numeral 600 denotes a detailed radiation slot layer 510 provided in the slot array antenna 500 according to an exemplary embodiment. Shows the composition.

That is, the radiation slot layer 510 described with reference to FIG. 5 below and the radiation slot layer 600 described with reference to FIG. 6 may be the same radiation slot layer.

According to reference numeral 500, the radiation slot layer 510 according to an embodiment may have a plurality of unit cells and a slot provided in each of the plurality of unit cells.

Further, the position of each slot according to an embodiment may be determined by a slot offset based on a power ratio preset for each of a plurality of unit cells.

According to one side, the slot offset may mean a distance value between a reference line preset in each of the plurality of unit cells and a slot provided in each of the plurality of unit cells.

In the transmission layer 520 according to an exemplary embodiment, a transparent patch corresponding to each of a plurality of unit cells may be formed.

In addition, the size of each of the transmissive patches according to an embodiment may be determined as a size corresponding to a preset phase value and a slot offset for each of the plurality of unit cells.

According to one side, the preset power ratio and phase value may be set by calculating a reference phase value for the target antenna, a distance value between a plurality of unit cells, and an angle formed by each of the plurality of unit cells and the target antenna.

According to reference numeral 600, the radiation slot layer according to an embodiment may further include at least one upper wall 630 and a side wall 620 for dividing the plurality of unit cells into a plurality of regions.

For example, each of the plurality of unit cells may include one slot 610. That is, when the radiation slot layer according to an embodiment includes 6x4 (24) unit cells, 24 slots 610 may also be provided.

In addition, the aperture width, which is the distance between the upper wall 630, the open length, which is the distance between the virtual line and the side wall 620 based on the upper wall 630, and the upper wall 630 and the side wall 620 At least one parameter value among the aperture offsets, which is an interval between virtual lines based on the virtual line, may be determined through impedance matching based on the slot offset of each slot 610.

7A to 7C are diagrams for explaining an example of determining the size of each transparent patch in the apparatus for designing a slot array antenna according to an embodiment.

7A to 7C, reference numeral 710 denotes an example of a transparent patch corresponding to a unit cell, reference numeral 720 denotes an example of a radiation slot layer of a 6x4 slot array antenna, and reference numeral 730 denotes 720 It shows the transmission coefficient characteristics according to all slot offset values for each slot.

According to reference numerals 710 to 730, the device for designing a slot array antenna according to an embodiment determines the size (L) of each of the transparent patches formed on the transmission layer corresponding to each of the plurality of unit cells, a predetermined phase value and a predetermined phase value. It can be determined by a size corresponding to the slot offset.

Specifically, if the slot offsets for each of the plurality of unit cells are set to different values, the operation of the transmissive patch is different, so it may be necessary to design in consideration of the transmission characteristics of the transmissive patch for all the slot offsets used. have.

For example, in the apparatus for designing a slot array antenna according to an embodiment, the size of a transparent patch corresponding to each of the plurality of unit cells based on the phase value and the slot offset value of each of the plurality of unit cells according to Tables 2 and 3 (L) can be determined.

For a more specific example, since the output phase of slot 1 in Line 1 is determined as'-45.0' and the slot offset is determined as '1.74', the size of the transparent patch corresponding to slot 1 (L , patch size) may be determined to be about '10.5'.

In addition, since the output phase of slot 7 in Line 2 is determined as'-160.0' and the slot offset is determined as '5.53', the size of the transparent patch corresponding to slot 7 (L, patch size) Can be determined to be about '12.5'.

8 to 9 are diagrams for explaining characteristics of a slot array antenna according to an embodiment.

8 to 9, reference numeral 800 denotes a simulated output power and output phase and a desired beam focusing/steering of the finally designed slot array antenna through the design apparatus of the slot array antenna according to an embodiment. A comparative example of calculated output power and output phase is shown.

Further, reference numeral 900 denotes a comparison example of a simulation result (sim.) and a measurement result (mea.) of the slot array antenna finally designed by the device for designing a slot array antenna according to an embodiment.

Specifically, reference numeral 900 (a) denotes a simulated radiation characteristic and a measured radiation characteristic, (b) denotes a simulation result (sim.), and (c) denotes a measurement result (mea.).

According to reference numeral 800, it can be seen that the simulation result of the output power and the output phase of the slot array antenna according to an embodiment shows a result similar to the result calculated for the desired beam focusing/steering.

In addition, according to 900, the black point in the reference sign 900 means the target point of focus, and the field distribution is parallel to the permeable surface and shows the E-field distribution in a plane 10 cm away from it. Can be confirmed.

In other words, the slot array antenna finally designed through the design device of the slot array antenna according to an embodiment radiates in the direction of 25 degrees from the beam steering plane as intended, and the elements arranged at 1x2 and 1x3 spaced 10cm from the transmissive surface. You can see that the beam is focused at the center point.

10 is a diagram illustrating a method of designing a slot array antenna according to an embodiment.

In other words, FIG. 10 is a diagram illustrating a method of operating a design apparatus for a slot array antenna according to an embodiment described with reference to FIGS. 1 to 9, and a slot array antenna according to an embodiment of the contents described later with reference to FIG. 10. Descriptions that are overlapping with those described through the design device of will be omitted.

Referring to FIG. 10, in step 1010, the design method of an antenna according to an embodiment sets a power ratio and a phase value for each of a plurality of unit cells formed on the radiation slot layer in the setting unit. I can.

Next, in step 1020, in the method of designing an antenna according to an embodiment, a slot offset determiner may determine a slot offset of each slot provided in each of the plurality of unit cells as a value corresponding to a set power ratio.

According to one side, the method of designing an antenna according to an embodiment in step 1030 is performed by the parameter determination unit, through impedance matching based on the determined slot offset, to form an aperture width and an aperture length on the radiation slot layer ( open lengh) and an aperture offset may be determined.

Next, in step 1040, the design method of the antenna according to the embodiment is performed in the patch size determination unit, in which the size of each of the transparent patches formed on the transmission layer corresponding to each of the plurality of unit cells is set to the set phase value and the determined slot offset. It can be determined by the corresponding size.

Consequently, using the present invention, it is possible to control the amplitude by optimizing the slot offset, and to control the phase value by placing a transmissive patch on top of each slot.

In addition, by using the present invention, it is possible to reduce the design cost and improve the efficiency of the multi-beam focusing and beam steering antenna by controlling the amplitude and phase values without an active element such as an amplifier or attenuator.

As described above, although the embodiments have been described by the limited drawings, various modifications and variations are possible from the above description to those of ordinary skill in the art. For example, the described techniques are performed in a different order from the described method, and/or components such as a system, structure, device, circuit, etc. described are combined or combined in a form different from the described method, or other components Alternatively, even if substituted or substituted by an equivalent, an appropriate result can be achieved.

Therefore, other implementations, other embodiments, and claims and equivalents fall within the scope of the claims to be described later.

100: antenna design device 110: setting unit
120: slot offset determination unit 130: parameter determination unit
140: patch size determination unit

Claims (12)

A setting unit for setting a power ratio and a phase value for each of a plurality of unit cells formed on the radiation slot layer;
A slot offset determination unit configured to determine a slot offset of each of the slots provided in each of the plurality of unit cells as a value corresponding to the set power ratio; and
A patch size determination unit that determines the size of each of the transmissive patches formed on the transmission layer corresponding to each of the plurality of unit cells as a size corresponding to the set phase value and the determined slot offset
Slot array antenna design device comprising a. The method of claim 1,
The slot offset is,
A distance value between a reference line preset in each of the plurality of unit cells and the slot provided in each of the plurality of unit cells
Design device for slot array antenna. The method of claim 1,
The setting unit,
A reference phase value for a target antenna, a distance value between the plurality of unit cells, and an angle formed by each of the plurality of unit cells and the target antenna are calculated to set the power ratio and the phase value for each of the plurality of unit cells.
Design device for slot array antenna. The method of claim 1,
Through impedance matching based on the determined slot offset, determining a parameter value of at least one of an aperture width, an open length, and an aperture offset formed on the radiation slot layer. Parameter determination unit
Slot array antenna design device further comprising a. The method of claim 4,
The radiation slot layer,
Further comprising at least one upper wall and at least one side wall dividing the plurality of unit cells into a plurality of regions,
The parameter determination unit,
At least one parameter value of the aperture width, which is the distance between the upper walls, the opening length, which is the distance between the virtual line based on the upper wall and the sidewall, and the aperture offset, which is the distance between the virtual line based on the upper wall and the sidewall To determine
Design device for slot array antenna. The method of claim 4,
The parameter determination unit,
In response to the determined slot offset, the aperture width at which the reflection coefficient is minimum is determined, the aperture length at which the reflection coefficient is minimum is determined in a state where the aperture width is determined, and when the aperture length is determined Determining the aperture offset at which the reflection coefficient is minimum
Design device for slot array antenna. A plurality of unit cells, a radiation slot layer in which a slot provided in each of the plurality of unit cells is formed, and
Transmissive layer in which a transmissive patch corresponding to each of the plurality of unit cells is formed
Including,
The position of each of the slots,
It is determined by a slot offset based on a preset power ratio for each of the plurality of unit cells,
The size of each of the permeable patches,
A predetermined phase value for each of the plurality of unit cells and a size corresponding to the slot offset
Slot array antenna. The method of claim 7,
The slot offset is,
A distance value between a reference line preset in each of the plurality of unit cells and the slot provided in each of the plurality of unit cells
Slot array antenna. The method of claim 7,
The power ratio and the phase value are,
A reference phase value for a target antenna, a distance value between the plurality of unit cells, and an angle formed by each of the plurality of unit cells and the target antenna.
Slot array antenna. The method of claim 7,
The radiation slot layer,
Further comprising at least one upper wall and at least one side wall dividing the plurality of unit cells into a plurality of regions,
The aperture width, which is the distance between the upper walls, the open length, which is the distance between the virtual line based on the upper wall and the side wall, and the aperture offset, which is the distance between the virtual line based on the upper wall and the side wall. aperture offset) is determined through impedance matching based on the slot offset.
Slot array antenna. In the setting unit, setting a power ratio and a phase value for each of the plurality of unit cells formed on the radiation slot layer;
In the slot offset determination unit, determining a slot offset of each slot provided in each of the plurality of unit cells as a value corresponding to the set power ratio, and
In the patch size determination unit, determining a size of each of the transparent patches formed on the transmission layer corresponding to each of the plurality of unit cells as a size corresponding to the set phase value and the determined slot offset
Design method of a slot array antenna comprising a. The method of claim 11,
In the parameter determination unit, through impedance matching based on the determined slot offset, at least one of an aperture width, an open length, and an aperture offset formed on the radiation slot layer. Steps to determine parameter values
Slot array antenna design method further comprising a.

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