KR101727492B1 - Antenna with adjustable beam radiation direction - Google Patents

Antenna with adjustable beam radiation direction Download PDF

Info

Publication number
KR101727492B1
KR101727492B1 KR1020150191295A KR20150191295A KR101727492B1 KR 101727492 B1 KR101727492 B1 KR 101727492B1 KR 1020150191295 A KR1020150191295 A KR 1020150191295A KR 20150191295 A KR20150191295 A KR 20150191295A KR 101727492 B1 KR101727492 B1 KR 101727492B1
Authority
KR
South Korea
Prior art keywords
conductor
antenna
lower conductor
parallel
radiation
Prior art date
Application number
KR1020150191295A
Other languages
Korean (ko)
Inventor
정영배
Original Assignee
한밭대학교 산학협력단
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한밭대학교 산학협력단 filed Critical 한밭대학교 산학협력단
Priority to KR1020150191295A priority Critical patent/KR101727492B1/en
Application granted granted Critical
Publication of KR101727492B1 publication Critical patent/KR101727492B1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/02—Waveguide horns
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/06—Waveguide mouths
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays
    • H01Q21/064—Two dimensional planar arrays using horn or slot aerials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
    • H01Q9/0457—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means electromagnetically coupled to the feed line

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Waveguide Aerials (AREA)

Abstract

The present invention relates to an antenna, and more particularly, to an antenna including a feed part and a radiating part, the radiating part including a top conductor which is upwardly raised at a first angle with respect to a predetermined horizontal plane and a bottom conductor And the lower conductor includes a parallel lower conductor parallel to the horizontal plane and a protruding conductor positioned at the end of the lower conductor and protruding from the upper surface of the lower conductor, The present invention relates to an antenna capable of easily adjusting a directing direction and reducing radiation by side lobes.
The present invention relates to a feeder for feeding electromagnetic signals to be transmitted and received; And a radiator for radiating the electromagnetic signal to the outside or receiving the electromagnetic signal from the outside, wherein the radiator comprises: an upper conductor forming an upward opening with a first angle with respect to a predetermined horizontal plane; And a lower conductor positioned below the upper conductor, wherein the lower conductor comprises: a parallel lower conductor parallel to the horizontal plane; And a protruding conductor positioned at an end of the parallel lower conductor and protruding from the upper surface of the parallel lower conductor.

Description

Antenna with adjustable beam radiation direction < RTI ID = 0.0 >

The present invention relates to an antenna, and more particularly, to an antenna including a feed part and a radiating part, the radiating part including a top conductor which is upwardly raised at a first angle with respect to a predetermined horizontal plane and a bottom conductor And the lower conductor includes a parallel lower conductor parallel to the horizontal plane and a protruding conductor positioned at the end of the lower conductor and protruding from the upper surface of the lower conductor, The present invention relates to an antenna capable of easily adjusting a directing direction and reducing radiation by side lobes.

Background of the Invention As wireless communication services are widely used and related technologies are developed, various types of antennas are being developed to meet various specifications. At this time, since the various types of antennas have advantages and disadvantages, appropriate antennas are selected or modified according to the standard of the system to be applied.

One of the most commonly used antennas is a horn antenna. 1 (a) illustrates a typical shape of a horn antenna. The horn antenna is advantageous in that it has a high efficiency in structural characteristics and is advantageous in controlling the beam width and gain. On the other hand, as shown in FIG. 1 (b) Pattern, it is difficult to control the direction of the main lobe, and there is a problem that the radiation by side lobes can be increased.

In this connection, Korean Patent Laid-Open Publication No. 10-2012-0021538 (Mar. 3, 2012) discloses a structure for suppressing radiation by side lobes using an electromagnetic band gap (EBG) structure, A complicated manufacturing process is required, so that the manufacturing cost may be greatly increased, and further, there may arise a problem that the characteristic deviation between the products may become large.

Recently, as the number of systems using an array antenna increases, various types of antenna structures and specifications such as a substrate integrated waveguide (SIW) structure that can be easily integrated with a substrate to implement an array antenna can be used An antenna that can be easily applied is being actively studied.

Accordingly, it is possible to control the direction of the main lobe while maintaining the advantage of the horn antenna, and to suppress the radiation by the side lobe. Furthermore, various structures and specifications such as the substrate integrated waveguide (SIW) However, there is still no adequate solution to this problem.

Korean Patent Laid-Open No. 10-2012-0021538

It is an object of the present invention to provide a horn antenna capable of adjusting the direction of a main lobe while controlling the high efficiency and the beam width / gain of the horn antenna, and it is an object of the present invention to provide an antenna which can suppress radiation due to side lobes and can be easily applied to various structures and specifications.

According to an aspect of the present invention, there is provided an antenna including a feeder for feeding electromagnetic signals to be transmitted and received; And a radiator for radiating the electromagnetic signal to the outside or receiving the electromagnetic signal from the outside, wherein the radiator comprises: an upper conductor forming an upward opening with a first angle with respect to a predetermined horizontal plane; And a lower conductor positioned below the upper conductor, wherein the lower conductor comprises: a parallel lower conductor parallel to the horizontal plane; And a protruded conductor positioned at an end of the parallel lower conductor and protruding from the upper surface of the parallel lower conductor.

At this time, the radiating portion may have an opening structure that does not include a conductor connecting the upper conductor and the lower conductor to the side surface of the radiating portion.

Here, the feeding part and the radiating part may have a fastening structure that can be coupled to or separated from each other.

At this time, the radiation characteristic may be controlled by replacing one or all of the upper conductor or the lower conductor of the radiating portion with the upper conductor or the lower conductor having another structure, dimension or shape.

In addition, the power feeder may include a substrate integrated waveguide structure.

At this time, an array antenna including a plurality of the radiation units may be formed.

According to the present invention, there is provided a plasma display panel including a power supply part and a radiating part, wherein the radiating part includes an upper conductor which is upwardly raised at a first angle with respect to a predetermined horizontal plane and a lower conductor located at a lower part thereof, And a protruding conductor which is positioned at a terminating end of the lower conductor and has a shape protruding from the upper surface of the lower conductor. Thus, the high efficiency and the beam width / It is possible to provide an antenna which can control the direction of the main lobe while suppressing the radiation by the side lobe and can be easily applied to various structures and specifications.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
1 is an exemplary view of a horn antenna according to the prior art.
2 is a structural view of a typical SIW horn antenna.
3 is a graph showing radiation pattern characteristics of a typical SIW horn antenna.
4 is a structural view of an antenna according to an embodiment of the present invention.
5 is a graph illustrating radiation pattern characteristics of an antenna according to an embodiment of the present invention.
FIG. 6 is an exemplary view illustrating a detachable structure of an antenna according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments will be described in detail below with reference to the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terms first, second, etc. may be used to describe various components, but the components are not limited by the terms, and the terms are used only for the purpose of distinguishing one component from another Is used.

The horn antenna according to the related art has a high efficiency due to its structural characteristics and is advantageous in controlling the beam width and gain while the horn antenna according to the related art has an advantage in that the radiation pattern symmetrical in the direction of the aperture of the horn The present invention has been made to solve the problem that the direction of the main lobe is difficult to control and that the radiation by the side lobe can be increased, and includes a feeding part and a radiating part, And a bottom conductor positioned beneath the top conductor, the bottom conductor including a parallel bottom conductor parallel to the horizontal plane, and a bottom conductor positioned at the end of the bottom conductor, And the protruding conductor having a shape protruding from the upper surface of the lower conductor, so that the high efficiency and the beam width / gain of the horn antenna An antenna which can control the direction of the main lobe while suppressing radiation due to side lobes and can easily be applied to various structures and specifications .

Hereinafter, the structure and characteristics of a typical horn antenna will be described first, and then, exemplary embodiments of an antenna according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, an antenna having a substrate integrated waveguide (SIW) structure will be described as an example, but the present invention is not limited thereto.

First, FIG. 2 illustrates the structure of a planar horn antenna having a conventional substrate integrated waveguide (SIW) structure. As shown in FIG. 2, the horn antenna has an aperture for transmitting and receiving an electromagnetic signal. At this time, as can be seen from FIG. 2 (b), the horn antenna radiates upwardly or downwardly symmetrically It is difficult to adjust the direction of the main lobe.

In addition, FIG. 3 shows the radiation characteristics of a planar horn antenna having a conventional substrate integrated waveguide (SIW) structure. More specifically, FIG. 3 (a) illustrates modeling (frequency is 27.425 GHz) for simulating the radiation characteristics of a planar horn antenna having a SIW structure, and FIG. 3 , It can be seen that the direction of the aperture is located in the x-axis direction.

 3 (b) shows a radiation pattern in an elevation angle direction in the x-z plane, and FIG. 3 (c) shows a three-dimensional (3D) stereoscopic radiation pattern. As can be seen from FIG. 3 (b), it can be seen that the direction of the main lobe is not upside-down but coincides with the direction of the beam in the normal horn antenna, It can be seen that the maximum value of the gain is calculated to be -9.7 dB.

2, a horn antenna having a substrate integrated waveguide (SIW) structure may be realized by disposing a substrate including a feed structure between the upper conductor and the lower conductor of the horn antenna In this case, the array antenna can be configured more efficiently.

In contrast, FIG. 4 shows the structure of the antenna 100 according to an embodiment of the present invention. As shown in FIG. 4, the antenna 100 according to an embodiment of the present invention includes a feeding part 110 for feeding electromagnetic signals to be transmitted and received, and a radiating part 110 for radiating the electromagnetic signal to the outside or receiving the electromagnetic signal from the outside The radiator 120 may include an upper conductor 130 forming an upward opening at a first angle with respect to a predetermined horizontal plane, And the lower conductor 140 includes a parallel lower conductor 142 and a parallel lower conductor 142 that are parallel to the horizontal plane, And a protruded conductor 144 positioned at the end of the parallel lower conductor 142 and protruding from the upper surface of the parallel lower conductor 142.

Accordingly, the antenna 100 according to an embodiment of the present invention has advantages such as high efficiency and control of the beam width / gain of a conventional horn antenna, and can control the direction of the main lobe, it is possible to suppress radiation caused by side lobes and to be easily applicable to various structures and specifications.

In the following, each component of the antenna 100 according to an embodiment of the present invention is divided and examined in detail.

First, an antenna 100 according to an embodiment of the present invention includes a feeder 110 for feeding electromagnetic signals to be transmitted and received, and a radiation unit 120 for radiating the electromagnetic signal to the outside or receiving radiation from the outside do.

The power feeder 110 may include an electromagnetic wave transmission unit for transmitting an electromagnetic signal to be transmitted to the radiation unit 120 or an external signal transmitted from the radiation unit 120, To an electronic circuit module (not shown) or the like.

4, the feeding part 110 is illustrated as a plate-like structure including a substrate integrated waveguide (SIW) structure. However, the present invention is not necessarily limited thereto, and the substrate may be removed and air or another medium may be used And various structures may be applied without any particular limitation as long as the electromagnetic signal can be appropriately transmitted or received to the radiation unit 120. [

Next, the radiation unit 120 radiates the electromagnetic signal received from the feeder 110 according to a predetermined radiation pattern or transmits the electromagnetic signal received from the outside to the feeder 110 .

4, the radiation unit 120 includes an upper conductor 130 forming an opening upward at a first angle with respect to a predetermined horizontal plane, And the lower conductor 140 may include a lower conductor 142 parallel to the horizontal plane and a lower conductor 142 parallel to the horizontal plane. And the protruded conductor 144 located at the terminating end and having a shape protruding from the upper surface of the parallel bottom conductor 142. Thus, unlike a normal horn antenna, the direction of the main lobe can be efficiently And it is also possible to effectively suppress radiation by side lobes.

4, the designer determines whether the top conductor 130 has a first angle (? In Fig. 4) or a length of the top conductor 130 (Fig. 4 And the length L2 and the height h3 of the protruded conductor 144 are adjusted so that the direction of the main lobe of the antenna The beam width, and the like can be effectively controlled, and the radiation characteristics of the side lobe can be appropriately controlled.

In particular, the protruded conductor 144 is positioned in the traveling direction of the electromagnetic signal radiated from the antenna 100, and can be effectively used to control the propagation characteristics of the electromagnetic signal. Accordingly, the beam width changes and the direction of the beam can be changed by changing the region where the electromagnetic signal is radiated. Further, the protruding conductor 144 suppresses the surface current flowing to the area outside the antenna, It is possible to effectively control the radiation characteristics by the side lobes such as the back radiation by the light source.

4, the protruding conductor 144 has a rectangular cross-section. However, the present invention is not limited thereto. In addition, the protruding conductor 144 having various shapes such as a circle, a triangle, .

Accordingly, by appropriately selecting the shape, the length L2, and the height h3 of the protruded conductor 144, it is possible to effectively and efficiently control the direction of the main lobe, the beam width, and the radiation level of the side lobe, It becomes possible to control.

In addition, FIG. 4 illustrates a case where the antenna 100 according to an embodiment of the present invention has a flat horn antenna structure, but the present invention is not necessarily limited thereto. In addition, Can be implemented in various forms as long as the structure can be applied.

4, the radiation unit 120 may be disposed on the side surface of the radiation unit 120 (that is, on the side surfaces of the upper conductor 130 and the lower conductor 130) The upper conductor 130 and the lower conductor 140 may have an open structure that does not include the conductor connecting the upper conductor 130 and the lower conductor 140 to the upper conductor 130 ) And the lower conductor 140 are separated from each other, it is possible to more effectively maximize the effect of improving the radiation characteristics of the antenna according to the change in dimensions, shape, etc. of the upper conductor 130 and the lower conductor 140 It is possible.

FIG. 5 illustrates a radiation pattern characteristic graph of the antenna 100 according to an embodiment of the present invention. 5 is a diagram illustrating a radiation pattern simulation result for the antenna 100 according to an exemplary embodiment of the present invention in a frequency band of 27.425 GHz where h1 = 2.2, h2 = 1.5, St = 0.508, L1 = 3, and L3 = 13).

5 (a) shows an elevation direction radiation pattern in the xz plane for the antenna 100 according to an embodiment of the present invention. In FIG. 5 (b) Dimensional (3D) three dimensional radiation pattern for the antenna 100 according to the present invention. 5 (a) and 5 (b), the direction of the main lobe is formed in the direction of an elevation angle of about 38.3 degrees. When the direction of the main lobe is compared with the direction of the beam in the normal horn antenna It can be seen that the direction of the main lobe can be effectively controlled. Further, the maximum gain of the side lobe at this time is -16.0 dB, which is lower than the maximum value (-9.7 dB) of the side lobes calculated in FIG. 3, and the radiation level of the side lobe And the like can be effectively suppressed.

6 illustrates an attachment / detachment structure of the antenna 100 according to an embodiment of the present invention. That is, the antenna 100 according to the embodiment of the present invention has a fastening structure in which the feeding part 110 and the radiation part 120 can be coupled to or separated from each other, Dimension and shape according to the direction of the main lobe, beamwidth, side lobe, and the like required according to the shape and size of the antenna, .

6, one or all of the upper conductor 130 or the lower conductor 140 of the radiation portion 120 may have different structures, dimensions, or shapes, as shown in FIG. The radiation characteristics of the antenna, such as the direction of the main lobe, the beamwidth, and the radiation characteristics of the side lobe, can be efficiently adjusted by replacing the upper conductor 130 or the lower conductor 140 of the shape of the main lobe .

In addition, the antenna 100 according to an embodiment of the present invention may include a feeding part 110 having a substrate integrated waveguide (SIW) structure as described above. Further, the antenna integrated waveguide (SIW) structure And the plurality of radiation parts 120 together with the feeding part 110 having the antenna 110 may be configured efficiently.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments described in the present invention are not intended to limit the technical spirit of the present invention but to illustrate the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

100: Antenna
110: Feeding part
120:
130: upper conductor
140: lower conductor
142: parallel bottom conductor
144: protruding conductor

Claims (6)

A feeding part for feeding electromagnetic signals to be transmitted and received; And
And a radiator for radiating the electromagnetic signal to the outside or receiving the electromagnetic signal from the outside,
The radiating portion includes:
An upper conductor forming an opening upward at a first angle relative to a predetermined horizontal plane; And
And a lower conductor located below the upper conductor,
Wherein the lower conductor comprises:
A parallel bottom conductor parallel to the horizontal plane; And
And a protruded conductor positioned at a terminating end of the parallel lower conductor in a direction in which the electromagnetic signal fed from the feeding part radiates, and protruding from the upper surface of the parallel lower conductor. The method according to claim 1,
The radiating portion includes:
And an opening structure not including a conductor connecting the upper conductor and the lower conductor to a side surface of the radiating portion. The method according to claim 1,
Wherein the feeding part and the radiating part have a fastening structure that can be coupled to or separated from each other. The method of claim 3,
Wherein the radiation characteristic is adjustable by replacing one or all of the upper or lower conductors of the radiating portion with a top conductor or a bottom conductor of different structure, dimension or shape. The method according to claim 1,
Wherein the power feeder comprises a substrate integrated waveguide structure. 6. The method of claim 5,
And an array antenna including a plurality of the radiation parts.
KR1020150191295A 2015-12-31 2015-12-31 Antenna with adjustable beam radiation direction KR101727492B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150191295A KR101727492B1 (en) 2015-12-31 2015-12-31 Antenna with adjustable beam radiation direction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150191295A KR101727492B1 (en) 2015-12-31 2015-12-31 Antenna with adjustable beam radiation direction

Publications (1)

Publication Number Publication Date
KR101727492B1 true KR101727492B1 (en) 2017-04-18

Family

ID=58703802

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150191295A KR101727492B1 (en) 2015-12-31 2015-12-31 Antenna with adjustable beam radiation direction

Country Status (1)

Country Link
KR (1) KR101727492B1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200467798Y1 (en) * 2013-04-11 2013-07-04 박철승 Substrate integrated waveguid fed antipodal linear tapered slot antenna and array antenna thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200467798Y1 (en) * 2013-04-11 2013-07-04 박철승 Substrate integrated waveguid fed antipodal linear tapered slot antenna and array antenna thereof

Similar Documents

Publication Publication Date Title
US9590304B2 (en) Broadband antenna
CN108346853B (en) Antenna device
US9525206B2 (en) Antenna unit, radar device, and composite sensor device
US20140035792A1 (en) Microstrip-Fed Crossed Dipole Antenna
AU2010322590B2 (en) Installation method of radiating elements disposed on different planes and antenna using same
US20140203995A1 (en) Creating low cost multi-band and multi-feed passive array feed antennas and low-noise block feeds
US20120306698A1 (en) Planar array feed for satellite communications
JP6195080B2 (en) Antenna device
EP3618190B1 (en) Antenna
US9666952B2 (en) Antenna device
US10756446B2 (en) Planar antenna structure with reduced coupling between antenna arrays
US10826148B2 (en) Ridge waveguide and array antenna apparatus
US11245197B2 (en) Wireless transceiver apparatus and base station
JP6340690B2 (en) Antenna device
US20170222328A1 (en) Antenna apparatus
US10374321B2 (en) Antenna device including parabolic-hyperbolic reflector
US20160352000A1 (en) Antenna device, wireless communication device, and electronic device
JP2018148268A (en) Antenna device
KR102274497B1 (en) Antenna device including parabolic-hyperbolic reflector
KR101833241B1 (en) Spatial power combiner for millimeter wave having transition substrates with different width
KR101727492B1 (en) Antenna with adjustable beam radiation direction
EP3764469A1 (en) Antenna
JP6216267B2 (en) Antenna unit
CN110391504A (en) A kind of micro-strip array antenna
CN109196718B (en) Antenna device

Legal Events

Date Code Title Description
E701 Decision to grant or registration of patent right
GRNT Written decision to grant