High power slotted waveguide array antenna

Abstract

The present invention relates to a high-power slot waveguide array antenna, and more specifically, to a high-power slot waveguide array antenna having a structure capable of transmitting high-power radio waves to a specific target while preventing insulation breakdown due to high power, thereby enabling stable operation. The present invention discloses a slot array antenna characterized by comprising: a power distribution unit in which an input wave is distributed to a first waveguide and a second waveguide, and then distributed from the first waveguide to a first-1 waveguide and a first-2 waveguide, and from the second waveguide to a second-1 waveguide and a second-2 waveguide; a feed unit comprising a plurality of feed slots each provided in the first-1 waveguide, the first-2 waveguide, the second-1 waveguide, and the second-2 waveguide; and a slot array radiating unit that feeds to a plurality of radiating waveguides through the plurality of feed slots and radiates a wave through a plurality of radiating slots provided in each radiating waveguide.

Description

Technology Field

[0001] The present invention relates to a high-power slot waveguide array antenna, and more specifically, to a high-power slot waveguide array antenna having a structure capable of transmitting high-power radio waves to a specific target while preventing insulation breakdown due to high power, thereby enabling stable operation. Background Technology

[0002] Recently, as drones and personal mobility devices have spread rapidly, there has been a continuous increase in cases where these devices are operated at unauthorized times or in unauthorized areas, causing problems.

[0003] In response to this, a method is being attempted to neutralize the illegal mobile vehicle by irradiating it with high-power electromagnetic waves to disrupt the operation of the illegal mobile vehicle's semiconductor devices or control circuits.

[0004] In order to neutralize the aforementioned illegal mobile device, an antenna capable of transmitting high-power electromagnetic waves by concentrating them in a specific direction (i.e., with high gain) is required, and for this purpose, a flat patch array antenna, a horn antenna, a slotted array antenna, etc. may be considered.

[0005] However, the above-mentioned flat patch antenna may be subject to limitations in transmitting electromagnetic waves of sufficient strength, and while the above-mentioned horn antenna has the advantage of being structurally simple yet capable of transmitting high output, obtaining high gain requires making the antenna length long, which may cause difficulties in the installation and operation (rotation, angle control, etc.) of the antenna.

[0006] In this regard, slot array antennas have the advantage of being able to obtain high gain while keeping the antenna thickness thin compared to horn antennas, but they have the problem that insulation breakdown may occur as high-power electromagnetic waves are concentrated in narrow slots.

[0007] Accordingly, in order to solve the problems of the conventional technology described above, there is a demand for a slot array antenna that can transmit high-power electromagnetic waves while preventing insulation breakdown, but no suitable alternative has yet been presented. Prior art literature

[0008] Korean Registered Patent Publication No. 10-2008-0084158 (September 19, 2008) The problem to be solved

[0009] The present invention was devised to solve the problems of the prior art as described above, and aims to provide a slot array antenna that can transmit high-power electromagnetic waves while preventing insulation breakdown.

[0010] In addition, the present invention aims to provide a slot array antenna having a structure that enables more efficient design, manufacturing, and operation.

[0011] Other detailed objectives of the present invention will be self-evident and understandable to experts or researchers in the art through the specific details described below. means of solving the problem

[0012] A slot array antenna according to one aspect of the present invention for solving the above problem comprises: a power distribution unit in which an input radio wave is distributed to a first waveguide and a second waveguide, and then distributed from the first waveguide to a first-1 waveguide and a first-2 waveguide, and from the second waveguide to a second-1 waveguide and a second-2 waveguide; a feed unit comprising a plurality of feed slots each provided in the first-1 waveguide, the first-2 waveguide, the second-1 waveguide, and the second-2 waveguide; and a slot array radiating unit that feeds to a plurality of radiating waveguides through the plurality of feed slots and radiates radio waves through a plurality of radiating slots provided in each radiating waveguide.

[0013] At this time, the first waveguide and the second waveguide form a symmetrical structure, and the first-1 waveguide and the first-2 waveguide can form a symmetrical structure with respect to the second-1 waveguide and the second-2 waveguide.

[0014] Additionally, the plurality of feed slots may not be provided in the first waveguide and the second waveguide, but may be provided after being distributed into the first-1 waveguide, the first-2 waveguide, the second-1 waveguide, and the second-2 waveguide.

[0015] In addition, the first-1 waveguide, the first-2 waveguide, the second-1 waveguide, and the second-2 waveguide each feed a radio wave to a plurality of radiating waveguides through a plurality of feed slots, and the plurality of radiating waveguides can radiate the radio wave through a plurality of radiating slots arranged in each radiating waveguide.

[0016] In addition, each region of the slot array radiating section corresponding to the first-1 waveguide, the first-2 waveguide, the second-1 waveguide, and the second-2 waveguide may have a symmetrical structure with respect to each other.

[0017] In addition, the plurality of feed slots may be arranged in the center of the plurality of radiation waveguides.

[0018] In addition, the electric field strength in the above-mentioned radiation slot may be smaller than the electric field strength in the above-mentioned feed slot. Effects of the invention

[0019] Accordingly, in a slot array antenna according to one embodiment of the present invention, it is possible to transmit high-power electromagnetic waves while preventing insulation breakdown.

[0020] In addition, a slot array antenna according to one embodiment of the present invention provides a slot array antenna having a structure that enables a worker to perform design, manufacturing, and operation more efficiently. Brief explanation of the drawing

[0021] The accompanying drawings, which are included as part of the detailed description to aid in understanding the present invention, provide embodiments of the present invention and explain the technical concept of the present invention together with the detailed description. FIG. 1 is an exemplary diagram of a slot array antenna according to one embodiment of the present invention. FIG. 2 is a diagram illustrating the configuration and operation of a slot array antenna according to an embodiment of the present invention. FIG. 3 is a drawing illustrating a symmetric structure of a slot array antenna according to one embodiment of the present invention. FIG. 4 is a diagram illustrating the electric field strength in a slot array antenna according to another embodiment of the present invention. FIGS. 5 and 6 are drawings illustrating radiation pattern characteristics in a slot array antenna according to an embodiment of the present invention. FIG. 7 is a diagram illustrating the reflection coefficient characteristics in a slot array antenna according to one embodiment of the present invention. FIG. 8 is a sample photograph of a slot array antenna actually fabricated according to one embodiment of the present invention. FIG. 9 is a diagram illustrating far-field electric field simulation and measurement results in a slot array antenna according to one embodiment of the present invention. Specific details for implementing the invention

[0022] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings. The objects, specific advantages, and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments in conjunction with the accompanying drawings.

[0023] Prior to this, the terms and words used in this specification and claims are appropriately defined by the inventor to best describe his invention and should be interpreted in a meaning and concept consistent with the technical spirit of the invention; they are intended merely to describe embodiments and should not be interpreted as limiting the invention.

[0024] In assigning reference numerals to components, identical or similar components are assigned the same reference numeral regardless of the reference numeral, and redundant descriptions thereof are omitted. The suffixes "module" and "part" used for components in the following description are assigned or used interchangeably for the sake of ease of drafting the specification; they do not inherently possess distinct meanings or roles and may refer to software or hardware components.

[0025] In describing the components of the present invention, when a component is expressed in a singular form, it should be understood that the component also includes a plural form unless specifically stated otherwise. Furthermore, terms such as "first," "second," etc., are used to distinguish one component from another, and the components are not limited by said terms. Additionally, if one component is connected to another component, it implies that yet another component may be connected between the components.

[0026] In addition, when describing the embodiments disclosed in this specification, if it is determined that a detailed description of related prior art may obscure the essence of the embodiments disclosed in this specification, such detailed description is omitted. Furthermore, the attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings; it should be understood that the drawings include all modifications, equivalents, and substitutions that fall within the spirit and technical scope of the invention.

[0027] Below, exemplary embodiments of a high-power slot waveguide array antenna according to one embodiment of the present invention will be described in turn with reference to the accompanying drawings.

[0028] First, FIG. 1 illustrates a slot array antenna (100) according to one embodiment of the present invention. As can be seen in FIG. 1, a slot array antenna (100) according to one embodiment of the present invention comprises: a power distribution unit (11) in which input radio waves are distributed to a first waveguide (111) and a second waveguide (112), then distributed from the first waveguide (111) to a first-1 waveguide (111a) and a first-2 waveguide (111b), and from the second waveguide (112) to a second-1 waveguide (112a) and a second-2 waveguide (112b); a feed unit (120) comprising a plurality of feed slots (121) respectively provided in the first-1 waveguide (111a), the first-2 waveguide (111b), the second-1 waveguide (112a), and the second-2 waveguide (112b); and a plurality of radiations through the plurality of feed slots (121). It is characterized by including a slot array radiating unit (130) that is fed to a waveguide (131) and radiates radio waves through a plurality of radiating slots (132) provided in each radiating waveguide (131).

[0029] At this time, as can be seen in FIGS. 1 and 2, the first waveguide (111) and the second waveguide (112) form a symmetrical structure, and the first-1 waveguide (111a) and the first-2 waveguide (111b) can form a symmetrical structure with respect to the second-1 waveguide (112a) and the second-2 waveguide (112b).

[0030] Additionally, as can be seen in FIGS. 1 and 2, the plurality of feed slots (121) are not provided in the first waveguide (111) and the second waveguide (112), but can be provided after being distributed into the first-1 waveguide (111a), the first-2 waveguide (111b), the second-1 waveguide (112a), and the second-2 waveguide (112b).

[0031] Accordingly, in a slot array antenna (100) according to one embodiment of the present invention, input radio waves are fed through a feed slot (121) after being distributed to a 4-way feeding network, thereby dispersing the power concentrated in the feed slot (121) and effectively preventing insulation breakdown in the feed slot (121).

[0032] In addition, in a slot array antenna (100) according to one embodiment of the present invention, as can be seen in FIGS. 1 and 3, the first waveguide (111a) feeds radio waves to a plurality of radiating waveguides (131) through a plurality of feed slots (121), and the plurality of radiating waveguides (131) radiate radio waves through a plurality of radiating slots (132) arranged in each radiating waveguide (131).

[0033] At this time, as can be seen in FIGS. 1 and FIGS. 3, the plurality of feed slots (121) may be arranged in the center of the plurality of radiation waveguides (131).

[0034] In addition, in a slot array antenna (100) according to one embodiment of the present invention, as can be seen in FIG. 3, each region of the slot array radiating part (130) corresponding to the first waveguide (111a), the first waveguide (111b), the second waveguide (112a), and the second waveguide (112b) may have a symmetrical structure with respect to each other.

[0035] In addition, in a slot array antenna (100) according to one embodiment of the present invention, as can be seen in FIG. 4, the electric field strength in the radiating slot (132) may have a smaller value than the electric field strength in the feed slot (121).

[0036] Hereinafter, with reference to FIGS. 1 to 4, a slot array antenna (100) according to one embodiment of the present invention will be examined in detail by dividing it into components.

[0037] First, the power distribution unit (110) may have a structure in which an input wave is distributed to a first waveguide (111) and a second waveguide (112), then distributed from the first waveguide (111) to a first-1 waveguide (111a) and a first-2 waveguide (111b), and from the second waveguide (112) to a second-1 waveguide (112a) and a second-2 waveguide (112b).

[0038] More specifically, as can be seen in FIGS. 1 and 2, when an input wave is input, power is distributed to the first waveguide (111) and the second waveguide (112) through the first power divider (113).

[0039] At this time, FIG. 1 illustrates a rectangular waveguide as the waveguide, but the present invention is not necessarily limited thereto.

[0040] Next, as can be seen in FIGS. 1 and 2, a second power distributor (114) is provided at the ends of the first waveguide (111) and the second waveguide (112), and power is distributed to the first-1 waveguide (111a) and the first-2 waveguide (111b), and the second-1 waveguide (112a) and the second-2 waveguide (112b), respectively, through a two-stage power distribution structure, thereby dividing and distributing power into four parts through the power distribution unit (110).

[0041] At this time, as can be seen in FIGS. 1 and 2, the first waveguide (111) and the second waveguide (112) form a symmetrical structure, and the first-1 waveguide (111a) and the first-2 waveguide (111b) can also form a symmetrical structure with respect to the second-1 waveguide (112a) and the second-2 waveguide (112b).

[0042] Next, the feed unit (120) is configured to include a plurality of feed slots (121) provided in the first waveguide (111a), the first waveguide (111b), the second waveguide (112a), and the second waveguide (112b), respectively, thereby feeding the electromagnetic waves transmitted through the power distribution unit (110) to the slot array radiating unit (130).

[0043] Accordingly, the first waveguide (111a), the first waveguide (111b), the second waveguide (112a), and the second waveguide (112b) each feed radio waves to a plurality of radiation waveguides (131) through a plurality of feed slots (121), and the plurality of radiation waveguides (131) radiate radio waves through a plurality of radiation slots (132) arranged in each radiation waveguide (131).

[0044] At this time, the plurality of feed slots (121) are not provided in the first waveguide (111) and the second waveguide (112) as can be seen in FIGS. 1 and 2, but can be provided after being distributed to the first-1 waveguide (111a), the first-2 waveguide (111b), the second-1 waveguide (112a), and the second-2 waveguide (112b), and accordingly, the power concentrated in the feed slots (121) is dispersed, thereby effectively preventing insulation breakdown in the feed slots (121).

[0045] Furthermore, as can be seen in FIGS. 1 and 2, the plurality of feed slots (121) may be arranged in a structure that is arranged in the center of the plurality of radiation waveguides (131).

[0046] In addition, in the slot array radiating section (130), power is fed to a plurality of radiation waveguides (131) through the plurality of feed slots (121), and radiation is radiated through a plurality of radiation slots (132) provided in each radiation waveguide (131).

[0047] At this time, as can be seen in FIG. 3, the region corresponding to the first waveguide (111a) (Fig. 3 (A)), the region corresponding to the first waveguide (111b) (Fig. 3 (B)), the region corresponding to the second waveguide (112a) (Fig. 3 (C)), and the region corresponding to the second waveguide (111d) (Fig. 3 (D)) in the slot array radiating part (130) can form a symmetrical structure with respect to each other, thereby enabling the operator to design and manufacture the antenna more efficiently.

[0048] Additionally, as can be seen in FIG. 4, the electric field strength in the radiation slot (132) may have a smaller value than the electric field strength in the feed slot (121).

[0049] For a more specific example, as can be seen in FIG. 4, when the electric field strength of the input radio wave is 1.37 MV / m (Fig. 4 (a)), the electric field strength in the power distribution unit (110) may be 0.952 MV / m (Fig. 4 (b)), and at this time, as the electric field is concentrated in the power supply slot (121), the electric field strength may increase up to 2.37 MV / m (Fig. 4 (c)).

[0050] Afterwards, the electric field strength in the radiating waveguide (131) may be 0.385 MV / m (Fig. 4 (d)), and then the electric field strength in the radiating slot (132) may be 1.85 MV / m (Fig. 4 (e)).

[0051] In this way, in a slot array antenna (100) according to one embodiment of the present invention, the input radio waves are distributed through a 4-way feeding network and then fed through the feed slot (121) so that the electric field is concentrated in the feed slot (121) and insulation breakdown occurs when the air insulation strength exceeds 3 MV / m, thereby enabling the transmission of high-power electromagnetic waves while effectively preventing insulation breakdown.

[0052] Furthermore, the slot array antenna (100) according to one embodiment of the present invention can achieve a thin antenna thickness compared to a horn antenna, etc., while also obtaining high gain, thereby enabling miniaturization, and accordingly, the installation and operation (rotation, angle control, etc.) of the antenna can be performed efficiently.

[0053] Additionally, FIGS. 5 and 6 illustrate radiation pattern characteristics in a slot array antenna (110) according to one embodiment of the present invention.

[0054] First, as can be seen in FIGS. 5 and 6, a slot array antenna (110) according to one embodiment of the present invention has a radiation pattern having high gain in a specific direction, and accordingly, can transmit high-output radio waves to a specific target.

[0055] In addition, FIG. 7 illustrates the reflection coefficient characteristics of a slot array antenna (100) according to one embodiment of the present invention.

[0056] As can be seen in FIG. 7, the reflection coefficient (S) when the slot array antenna (100) according to one embodiment of the present invention has an operating frequency of about 3 GHz. 11 It exemplifies the characteristics of the parameters.

[0057] In addition, FIG. 8 illustrates a sample photograph of a slot array antenna (100) actually manufactured according to one embodiment of the present invention.

[0058] In this regard, FIG. 9 illustrates a comparison between the measured radiation pattern and the simulation calculation for a actually manufactured slot array antenna (100) in the far-field.

[0059] As can be seen in FIG. 9, both the measured and calculated values ​​have maximum gain in the direction normal to the slot array antenna (100), and the beamwidth also shows matching results.

[0060] Accordingly, in a slot array antenna (100) according to one embodiment of the present invention, it is possible to transmit high-power electromagnetic waves while preventing insulation breakdown.

[0061] In addition, according to one embodiment of the present invention, a slot array antenna (100) having a structure that allows a worker to design, manufacture, and operate more efficiently can be provided.

[0062] The embodiments and drawings described herein are merely illustrative and do not limit the scope of the invention in any way. Furthermore, the connections of lines or connecting members between the components depicted in the drawings are illustrative of functional connections and / or physical or circuit connections, and may be replaced or additionally represented as various functional connections, physical connections, or circuit connections in the actual device. Additionally, unless specifically stated with terms such as "essential" or "importantly," a component may not be strictly necessary for the application of the invention.

[0063] In the specification of the present invention (particularly in the claims), the use of the term "the above" and similar descriptive terms may be in both singular and plural. Furthermore, where a range is described in the present invention, it is implied to include inventions applying individual values ​​belonging to said range (unless otherwise stated), and is equivalent to describing each individual value constituting said range in the detailed description of the invention. Additionally, the steps presented in the method inventions of the present invention are not intended to impose a constraint on their sequential order, and the order may be appropriately changed as necessary, unless a specific step must necessarily precede another step depending on the nature of each process. The use of all examples or exemplary terms (e.g., etc.) in the present invention is merely for the purpose of describing the present invention in detail, and the scope of the present invention is not limited by such examples or exemplary terms unless limited by the claims. Furthermore, a person skilled in the art will understand that various modifications, combinations, and changes may be made according to design conditions and elements within the scope of the claims or equivalents. Explanation of the symbols

[0064] 100: Slotted array antenna 110: Power distribution unit 111: First waveguide 111a : Waveguide 1-1 111b : 1st-2nd waveguide 112: Second waveguide 112a : Waveguide 2-1 112b : Waveguide 2-2 113: 1st power divider 114 : 2nd power divider 120 : Emergency transfer 121 : Quick Cash Slot 130: Slot array radiator 131 : Radiation waveguide 132 : Radiation slot

Claims

Claim 1 A slot array antenna for irradiating high-power electromagnetic waves capable of neutralizing illegal mobile objects, comprising: a power distribution unit in which an input radio wave is distributed to a first waveguide and a second waveguide using a first power divider, then distributed at the end of the first waveguide using a second power divider to be distributed to a first-1 waveguide and a first-2 waveguide that proceed perpendicularly to the first waveguide, then bend and proceed parallel to the opposite direction of the first waveguide, and then distributed at the end of the second waveguide using a second power divider to be distributed to a second-1 waveguide and a second-2 waveguide that proceed perpendicularly to the second waveguide, then bend and proceed parallel to the opposite direction of the second waveguide; and a feed unit comprising a plurality of feed slots each provided in the first-1 waveguide, the first-2 waveguide, the second-1 waveguide, and the second-2 waveguide. A slot array radiating unit comprising: a plurality of radiating waveguides fed through the plurality of feed slots and radiating radio waves through a plurality of radiating slots provided in each radiating waveguide; wherein the plurality of radiating slots are arranged such that the plurality of radiating slots of the slot array radiating unit corresponding to the first-1 waveguide, the first-2 waveguide, the second-1 waveguide, and the second-2 waveguide are arranged in a symmetrical structure in the up-down and left-right directions so as to concentrate high-power electromagnetic waves in the direction of the illegal moving body. Claim 2 A slot array antenna according to claim 1, characterized in that the first waveguide and the second waveguide form a symmetrical structure, and the first-1 waveguide and the first-2 waveguide form a symmetrical structure with respect to the second-1 waveguide and the second-2 waveguide. Claim 3 A slot array antenna according to claim 1, characterized in that the plurality of feed slots are not provided in the first waveguide and the second waveguide, but are provided after being distributed into the first-1 waveguide, the first-2 waveguide, the second-1 waveguide, and the second-2 waveguide. Claim 4 A slot array antenna according to claim 1, characterized in that the first-1 waveguide, the first-2 waveguide, the second-1 waveguide, and the second-2 waveguide each feed a radio wave to a plurality of radiating waveguides through a plurality of feed slots, and the plurality of radiating waveguides radiate the radio wave through a plurality of radiating slots arranged in each radiating waveguide. Claim 5 delete Claim 6 A slot array antenna according to claim 1, characterized in that the plurality of feed slots are arranged in the center of the plurality of radiation waveguides. Claim 7 A slot array antenna according to claim 1, characterized in that the electric field strength in the radiating slot is smaller than the electric field strength in the feeding slot.

Images