KR101674138B1 - Compact broadband monopole antenna and manufacturing method for the same - Google Patents

Compact broadband monopole antenna and manufacturing method for the same Download PDF

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Publication number
KR101674138B1
KR101674138B1 KR1020150124399A KR20150124399A KR101674138B1 KR 101674138 B1 KR101674138 B1 KR 101674138B1 KR 1020150124399 A KR1020150124399 A KR 1020150124399A KR 20150124399 A KR20150124399 A KR 20150124399A KR 101674138 B1 KR101674138 B1 KR 101674138B1
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South Korea
Prior art keywords
antenna
transmission line
pattern
forming
parasitic elements
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KR1020150124399A
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Korean (ko)
Inventor
황금철
권지나
송찬미
윤종헌
윤주호
이종민
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성균관대학교산학협력단
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Priority to KR1020150124399A priority Critical patent/KR101674138B1/en
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Publication of KR101674138B1 publication Critical patent/KR101674138B1/en

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    • 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
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/40—Element having extended radiating surface
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/10—Resonant antennas

Abstract

A miniature broadband monopole antenna according to an embodiment of the present invention includes a dielectric substrate; And a transmission line formed on the dielectric substrate and formed by etching a zigzag first pattern on the left and right with respect to a vertical center portion of the dielectric substrate.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a small-sized broadband monopole antenna,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an antenna and a manufacturing technology thereof, and more particularly, to a miniature wideband monopole antenna and a method of manufacturing the same.

Generally, an antenna is a conductor installed in the air in order to efficiently radiate radio waves to a space in order to achieve a purpose of communication in radio communication, or to efficiently emit electromotive force by radio waves, and to transmit electromagnetic waves to a space for transmission and reception It is a device for receiving. In order for such an antenna to operate efficiently, it is necessary to resonate the antenna at a frequency to be used.

2. Description of the Related Art In recent years, as information communication systems have become smaller, lighter, and have higher performance, there is a continuing need for antenna miniaturization. Antenna miniaturization technology is used in various fields such as mobile communication, satellite broadcasting, and GPS.

In addition, there is an increasing demand for antennas that can be used in a wide band rather than an antenna for only a specific band.

However, in general, as the size of the antenna is reduced, the bandwidth and the radiation efficiency are reduced, the radiation pattern of the antenna becomes closer to omnidirectionality, and the gain of the antenna becomes lower.

Therefore, there is a need to develop a technique for achieving miniaturization while maintaining the performance of the antenna, that is, a technique capable of ensuring a wide operating band while using a small-sized antenna.

A related prior art is Korean Patent Publication No. 10-2003-0093146 (entitled Broadband Omni Antenna, published on December 6, 2013).

According to an embodiment of the present invention, a transmission line having a symmetrical structure is formed on an antenna body to reduce a resonance frequency, thereby miniaturizing an antenna and improving its operating characteristics, and a method of manufacturing the same.

A miniature broadband monopole antenna according to an embodiment of the present invention includes a dielectric substrate; And an unshielded artificial transmission line formed on the dielectric substrate and formed by etching a zigzag first pattern on the left and right with respect to a vertical center portion of the dielectric substrate.

The transmission line includes a first transmission line extending from the first and second bodies so that first and second bodies respectively connecting the upper and lower sides of the antenna body are connected; A second transmission line extending downward from the first body and symmetrically formed on both sides with respect to the first transmission line; And a third transmission line extending upward from the second body and facing the first transmission line with respect to the second transmission line.

The second transmission line may have a disposition structure spaced apart from the second body by a predetermined distance so as not to be connected to the second body when the second transmission line extends downward from the first body.

The third transmission line may have a disposition structure spaced apart from the first body so as not to be connected to the first body when the third transmission line extends upward from the second body.

The transmission line may be formed so that each of the first to third transmission lines has a predetermined width.

The small-sized wideband monopole antenna according to an embodiment of the present invention may further include first and second parasitic elements formed on the left and right sides of the antenna body, respectively, in order to improve the bandwidth of the reflection coefficient of the small- have.

The first and second parasitic elements may be formed symmetrically with respect to the left and right sides of the antenna body.

The first and second parasitic elements may be formed in a lattice structure composed of a plurality of cells.

The first and second parasitic elements may be formed to have a second pattern having a reflection coefficient bandwidth of -10 dB or less through optimization through a genetic algorithm (GA).

A method of manufacturing a small-sized wideband monopole antenna according to an embodiment of the present invention includes: forming an antenna body on a dielectric substrate; Forming a zigzag-like first pattern on the antenna body at portions corresponding to right and left with respect to a vertical center portion of the dielectric substrate; And forming a transmission line on the antenna body by etching the first pattern.

The method of manufacturing a small-sized wideband monopole antenna according to an embodiment of the present invention may further include forming first and second parasitic elements at positions separated from left and right sides of the antenna body, respectively.

Wherein the forming of the first and second parasitic elements comprises: preparing a patch plate in the form of a lattice structure composed of a plurality of cells; Forming a second pattern on the patch plate by applying a genetic algorithm; And forming the first and second parasitic elements by disposing the patch plate on which the second pattern is formed at a position spaced apart from the left and right sides of the antenna body.

Wherein forming the second pattern comprises applying the genetic algorithm to the patch plate; Measuring a bandwidth of a reflection coefficient for each pattern formed on the patch plate as the genetic algorithm is applied; And forming the second pattern by selecting a pattern corresponding to an optimal measurement value indicating the bandwidth of -10 dB or less among the measured values of the bandwidth.

The details of other embodiments are included in the detailed description and the accompanying drawings.

According to an embodiment of the present invention, an antenna body having a transmission line formed at the center of a dielectric substrate and an antenna having parasitic elements on the left and right of the antenna body are formed, thereby ensuring a wide reflection coefficient bandwidth can do.

According to an embodiment of the present invention, a resonance frequency of an antenna can be lowered through a transmission line provided in an antenna body, thereby providing a miniaturized antenna that can be used in a narrow space.

According to one embodiment of the present invention, the first and second parasitic elements of the shape optimized by the genetic algorithm are arranged on the left and right sides of the antenna body, respectively, so that the small broadband monopole antenna provides a more extended reflection coefficient bandwidth .

According to an embodiment of the present invention, a miniaturized broadband monopole antenna can be realized by forming first and second parasitic elements formed in a lattice structure composed of an antenna body having a transmission line and a plurality of cells in a dielectric substrate, Furthermore, not only the manufacturing cost and time can be reduced, but also a wide bandwidth can be provided in a narrow space.

1 is a view illustrating a small-sized wideband monopole antenna according to an embodiment of the present invention.
FIG. 2 is a graph showing a characteristic of a reflection coefficient of an antenna by a transmission line in an embodiment of the present invention. FIG.
FIG. 3 is a diagram showing a comparison between measured and simulated reflection coefficient characteristics in an embodiment of the present invention and an antenna employing a rectangular parasitic element without a transmission line.
4 is a graph illustrating a maximum gain for each frequency of a small-sized wideband monopole antenna according to an embodiment of the present invention.
FIGS. 5A and 5B are diagrams illustrating radiation patterns in the XY plane, the XZ plane, and the YZ plane measured and simulated at 900 MHz and 1200 MHz of the small-sized wideband monopole antenna according to an embodiment of the present invention.
6 to 8 are flowcharts illustrating a method of manufacturing a small-sized wideband monopole antenna according to an embodiment of the present invention.
9 to 13 are views illustrating a manufacturing process of a small-sized wideband monopole antenna according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and / or features of the present invention, and how to accomplish them, will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but is capable of many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view illustrating a small-sized wideband monopole antenna according to an embodiment of the present invention.

1, a miniature wideband monopole antenna 100 according to an exemplary embodiment of the present invention may include a dielectric substrate 110, an antenna body 120, and a plurality of parasitic elements 130.

The dielectric substrate 110 may be formed in a rectangular parallelepiped shape or may be installed on a ground plane 101 formed in a rectangular shape. That is, the dielectric substrate 110 may be vertically erected on the lower surface of the ground plane 101.

The ground plane 101 may have a relatively large and flat surface and may have a surface formed of a conductive metal material such as copper, gold, aluminum, or the like to allow a constant current to flow through the dielectric substrate 110.

Further, the ground plane 101 has a rectangular shape, but is not limited thereto, and may be formed in various shapes such as a circle, an ellipse, and a polygon.

The dielectric substrate 110 may be formed of a dielectric material, for example, a substrate of Teflon (TLX-6) having a thickness of 1.52 mm, a dielectric constant of 2.65, and a dielectric loss tangent of 0.0019 . However, the present invention is not limited to this, and the dielectric substrate 110 may be formed of a PCB substrate having excellent flexibility such as glass epoxy (FR-4) or RF-35 substrate.

The antenna body 120 is formed on the front surface of the dielectric substrate 110, and the overall shape of the antenna body 120 may be a 'T' shape.

The antenna body 120 includes a first body 124 forming an upper side, a second body 126 forming a lower side, and a transmission line 122 formed between the first and second bodies 124 and 126, . ≪ / RTI >

Both ends of the first body 124 may extend in the left and right directions of the dielectric substrate 110.

The second body 126 may be formed such that the lower side is converged inward, that is, the lower center is narrowed.

The transmission line 122 is formed on the antenna body 120 between the first and second bodies 124 and 126. The first and second transmission lines 122 and 124 are formed on the dielectric substrate 110, The pattern is formed as the etched. The method of etching the first pattern will be described later in detail with reference to a method of manufacturing the small-sized wideband monopole antenna 100.

The transmission line 122 may include a first transmission line 122a, a second transmission line 122b, and a third transmission line 122c.

The first transmission line 122a may extend from the first and second bodies 124 and 126 so that the first and second bodies 124 and 126 are connected to each other. That is, the first and second bodies 124 and 126 may be connected to each other through the first transmission line 122a.

At this time, the first transmission line 122a may be formed on the vertical center line of the antenna body 120, and the antenna body 120 may be symmetrical with respect to the first transmission line 122a .

The second transmission line 122b extends downward from the first body 124 and may be symmetrically formed on both sides with respect to the first transmission line 122a.

When the second transmission line 122b extends downward from the first body 124, the second transmission line 122b may be spaced apart from the second body 126 by a predetermined distance so as not to be connected to the second body 126 Lt; / RTI > That is, the second transmission line 122b may be spaced apart from the second body 126 by a distance corresponding to the width of the first pattern.

The third transmission line 122c may extend upward from the second body 126 and may be formed to face the first transmission line 122a with reference to the second transmission line 122b. In other words, the third transmission line 122c is positioned at both side edges of the antenna body 120, and may be symmetrical with respect to the first transmission line 122a.

At this time, the third transmission line 122c may have a disposition structure spaced apart from the first body 124 so as not to be connected to the first body 122a when the second transmission line 122c extends upward from the second body 126 Lt; / RTI > That is, the third transmission line 122c may be spaced apart from the first body 124 by a distance corresponding to the width of the first pattern.

The transmission line 122 may include the first to third transmission lines 122a, 122b, and 122c, and the first to third transmission lines 122a, 122b, Width of the width.

Here, the widths of the first to third transmission lines 122a, 122b, and 122c may be set in advance corresponding to the width of the first pattern. That is, the first to third transmission lines 122a, 122b and 122c may have a width equal to the width of the first pattern, as shown in FIG. Accordingly, the first to third transmission lines 122a, 122b, and 122c may not be in contact with each other and may be spaced apart from each other by a predetermined distance.

Accordingly, according to the embodiment of the present invention, the resonance frequency of the antenna can be lowered through the transmission line 122 provided in the antenna body 120, thereby providing a miniaturized antenna that can be used in a narrow space have.

The plurality of parasitic elements 130 may include first and second parasitic elements 130a and 130b formed on the left and right sides of the antenna body 120, respectively.

In other words, the first and second parasitic elements 130a and 130b may be formed symmetrically with respect to the left and right sides of the antenna body 120, respectively.

The first and second parasitic elements 130a and 130b may be formed on the dielectric substrate 110 in the same manner as the antenna body 120. Also, the first and second parasitic elements 130 may be realized as a thin metal film.

Meanwhile, the first and second parasitic elements 130a and 130b may have a lattice structure including a plurality of cells.

At this time, the first and second parasitic elements 130a and 130b may be formed to have a second pattern having a reflection coefficient bandwidth of -10 dB or less through optimization through a genetic algorithm (GA: Genetic Algorithm) .

Specifically, the plurality of cells are connected to the first and second parasitic elements 130a and 130b by applying the genetic algorithm to the first and second parasitic elements 130a and 130b, May be implemented as either a stripped state or a non-stripped state for each cell.

Here, the first and second parasitic elements 130a and 130b are formed so that the metal constituting the plurality of cells is peeled or peeled so that the small-sized wideband monopole antenna 100 has a reflection coefficient bandwidth of -10 dB or less at maximum . That is, the first and second parasitic elements 130a and 130b may be formed to have a second pattern corresponding to a metal that is not peeled or peeled off with respect to the bandwidth.

In this embodiment, the bandwidth of the reflection coefficient of the small-sized wideband monopole antenna 100 can be measured and obtained for each pattern of the first and second parasitic elements 130a and 130b by applying the genetic algorithm.

In the present embodiment, among the plurality of measurement values for each pattern obtained, an optimum measurement value in which the bandwidth of the reflection coefficient is less than or equal to -10 dB is detected, a pattern corresponding to the optimum measurement value is selected, And the second pattern of the first and second parasitic elements 130a and 130b.

In other words, the first and second parasitic elements 130a and 130b are provided with an optimum measurement value indicating a bandwidth of -10 dB or less among a plurality of measurement values for each pattern obtained in relation to the bandwidth of the reflection coefficient And may have the second pattern corresponding thereto.

As described above, according to an embodiment of the present invention, the first and second parasitic elements 130a and 130b having a second pattern to which the genetic algorithm is applied are disposed on the left and right sides of the antenna body 120, respectively , The small broadband monopole antenna 100 may be provided with a further extended reflection coefficient bandwidth.

FIG. 2 is a graph showing a characteristic of a reflection coefficient of an antenna by a transmission line in an embodiment of the present invention. FIG.

Referring to FIG. 2, in an embodiment of the present invention, an antenna having the transmission line (see "122" in FIG. 1) is compared with an antenna (TLPM antenna not having the transmission line) .

As a result of the simulation, the resonance frequency of the antenna having the transmission line was 734 MHz, and the resonance frequency of the TLPM antenna was 884 MHz. Accordingly, the lengths of the antennas having the transmission line and the lengths of the TLPM antenna according to the length of the antenna were 0.176? And 0.146?, Respectively, and the length of the antenna having the transmission line was reduced by 17%.

As a result, since the antenna having the transmission line has a small resonance frequency in spite of the same length, the length along the wavelength is reduced, which is advantageous for miniaturization.

3 is a graph showing the reflection coefficient characteristics of an antenna by a transmission line and a parasitic element in an embodiment of the present invention.

As shown in FIG. 3, in one embodiment of the present invention, measurement and simulation of an antenna having the transmission line (see "122" in FIG. 1) and the parasitic element The reflection coefficient is compared with the simulated reflection coefficient of the other antenna (reference antenna).

The measured and simulated results show that the reflection coefficient bandwidth of -10dB or less measured and simulated in the case of the antenna having the transmission line and the parasitic element as compared with the reference antenna is improved compared to the reference antenna and is 45.04 % (800-1265 MHz) and 48.35% (795-1302 MHz).

Accordingly, it is confirmed that the antenna including the transmission line and the parasitic element can provide a further improved bandwidth than the reference antenna.

4 is a graph illustrating a maximum gain for each frequency of a small-sized wideband monopole antenna according to an embodiment of the present invention.

As a result of the measurements and simulations, in one embodiment of the present invention, the measured maximum gain was 4.11 dBi at 1250 MHz and the gain variation within the operating frequency bandwidth was 2.3 dBi or less. That is, it is confirmed that the small-sized wideband monopole antenna according to the embodiment of the present invention exhibits a relatively constant gain within the operating frequency bandwidth.

FIGS. 5A and 5B are views showing measured and simulated radiation patterns in X-Y plane, X-Z plane, and Y-Z plane at 900 MHz and 1200 MHz, respectively, of a small-sized wideband monopole antenna according to an embodiment of the present invention.

As a result of the measurement and the simulation, it was confirmed that the radiation pattern was suppressed in the -Z-axis direction due to the influence of the ground plane, but the omnidirectional radiation pattern characteristics were generally observed.

Accordingly, it can be seen that the antenna manufactured according to the embodiment of the present invention has the omnidirectional radiating pattern characteristics radiated in all directions, and thus it can be widely used in the field of wireless communication requiring an omnidirectional radiation pattern in a wide band .

Hereinafter, small-sized wideband monopole antennas 1110 and 1200 according to other embodiments of the present invention will be described with reference to FIGS. 11 and 12. FIG.

11 is a view illustrating a miniature wideband monopole antenna according to another embodiment of the present invention.

11, a miniature wideband monopole antenna 1100 according to another embodiment of the present invention includes a dielectric substrate 110 and an antenna body 120. Unlike the miniature wideband monopole antenna 100 of FIG. 1, The parasitic element 130 of FIG.

That is, in this embodiment, only the antenna body 120 having the transmission line 122 formed by etching the zigzag first pattern on the right and left with respect to the vertical central portion of the dielectric substrate 110, (Not shown).

12 is a view for explaining a miniature wideband monopole antenna according to another embodiment of the present invention.

12, a miniature wideband monopole antenna 1200 according to another embodiment of the present invention may include a dielectric substrate 110, an antenna body 120, and a plurality of parasitic elements 130.

However, the small-sized wideband monopole antenna 1200 of FIG. 12 may not include a plurality of cells having a pattern unlike the small-sized wideband monopole antenna 1200 of FIG. That is, the parasitic element 130 included in the small-sized wideband monopole antenna 1200 of FIG. 12 can be realized as a rectangular-shaped parasitic element having no pattern.

Hereinafter, a method of manufacturing a small-sized wideband monopole antenna according to an embodiment of the present invention will be described with reference to FIGS. 6 to 13. FIG.

FIGS. 6 to 8 are flowcharts for explaining a method of manufacturing a small-sized wideband monopole antenna according to an embodiment of the present invention, and FIGS. 9 to 13 are cross-sectional views illustrating a method of manufacturing a miniature wideband monopole antenna according to an embodiment of the present invention. It is a process chart.

6 and 9, in step 610, the antenna body 120 is formed on the dielectric substrate 110.

Here, the antenna body 120 may be formed on the dielectric substrate 110 in the form of a film made of a thin metal (e.g., copper).

6 and 10, in step 620, a zigzag first pattern (for example, a rectangular pattern) is formed on the antenna body 120 in the portion corresponding to the right and left with respect to the vertical center portion of the dielectric substrate 110 1010).

6 and 11, in step 630, the first pattern 1010 is etched to form a transmission line 122 in the antenna body 120. Next, as shown in FIG.

At this time, the etching of the first pattern 1010 may be performed according to the peeling of the metal in the zigzag portions on the left and right with respect to the vertical central portion of the antenna body 120.

Accordingly, the transmission line 122 may include first to third transmission lines 122a, 122b, and 122c having a width corresponding to the width of the first pattern 1010. [ That is, the first transmission line 122a connects the first and second bodies 124 and 126 to connect the first and second bodies 124 and 126, respectively, which are upper and lower sides of the antenna body 120, As shown in Fig. The second transmission line 122b may extend downward from the first body 124 and be opposed to both sides of the first transmission line 122a. The third transmission line 122c may extend upward from the second body 126 and may be formed to face the first transmission line 122a with reference to the second transmission line 122b.

6, the first and second parasitic elements 130 are formed at positions separated from the left and right sides of the antenna body 120 in step 640, respectively. This will be described in more detail with reference to Figs. 7 to 8 and Figs. 12 to 13. Fig.

Here, the patch plate 1210 may be formed in a rectangular shape on the dielectric substrate 110.

Next, referring to FIGS. 7 and 13, a genetic algorithm is applied in step 720 to form a second pattern on the patch plate 1210 such that the plurality of cells have a pattern.

Specifically, referring to FIG. 8, at step 810, the genetic algorithm is applied to the patch plate 1210 repeatedly.

Accordingly, the patch plate 1210 can be formed with one of two different patterns (a state in which the metal is peeled off or not peeled off).

Next, as the genetic algorithm is repeatedly applied in step 820, the bandwidth of the reflection coefficient is measured for each pattern formed on the patch plate 1210.

Next, in step 830, among the measured values of the bandwidth, the second pattern is formed by selecting a pattern corresponding to an optimum measured value indicating that the bandwidth is at most -10 dB or less. That is, the second pattern may be etched into the patch plate 1210 in a predetermined pattern so as to have a reflection coefficient bandwidth of -10 dB or less.

Referring again to FIG. 7, in step 730, a patch plate 1210 having the second pattern formed thereon is disposed at a position spaced apart from the left and right sides of the antenna body 120, so that the first and second parasitic elements 130a, and 130b. In other words, the first and second parasitic elements 130a and 130b may be formed by etching the second pattern to the patch plate 1210. [

When the antenna formed through this process is vertically disposed on the ground plane, the small-sized wideband monopole antenna of Fig. 1 is finally produced.

As described above, according to the embodiment of the present invention, the antenna body 120 having the transmission line 122 in the dielectric substrate 110 and the first and second By forming the parasitic element 130, it is possible to realize a miniaturized wideband monopole antenna, further reduce manufacturing cost and time, and also provide an antenna having a wide bandwidth in a narrow space.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Modification is possible. Accordingly, the spirit of the present invention should be understood only in accordance with the following claims, and all equivalents or equivalent variations thereof are included in the scope of the present invention.

101: ground plane
110: dielectric substrate
120: Antenna body
122: transmission line
122a: a first transmission line
122b: second transmission line
122c: a third transmission line
124: first body
126: Second body
130: parasitic element
130a: first parasitic element
130b: second parasitic element
1010: First pattern
1210: Patch plate

Claims (13)

A dielectric substrate; And
And a transmission line formed on the dielectric substrate and formed by etching a zigzag first pattern on the left and right with respect to a vertical central portion of the dielectric substrate,
Lt; / RTI >
The transmission line
A first transmission line extending from the first and second bodies so that first and second bodies respectively connecting the upper and lower sides of the antenna body are connected;
A second transmission line extending downward from the first body and opposing to both sides of the first transmission line; And
And a third transmission line extending upward from the second body and facing the first transmission line with respect to the second transmission line,
And a plurality of small-band broadband monopole antennas.
delete The method according to claim 1,
The second transmission line
Wherein the second antenna has a structure spaced apart from the second body by a predetermined distance so as not to be connected to the second body when extending downward from the first body.
The method according to claim 1,
The third transmission line
Wherein the antenna has an arrangement structure spaced apart from the first body so as not to be connected to the first body when the antenna is extended upward from the second body.
The method according to claim 1,
The transmission line
Wherein each of the first to third transmission lines is formed to have a width of a predetermined width.
The method according to claim 1,
In order to improve the bandwidth of the reflection coefficient of the small-sized wideband monopole antenna, the first and second parasitic elements formed on the left and right sides of the antenna body, respectively,
Wherein the antenna comprises a first antenna and a second antenna.
The method according to claim 6,
The first and second parasitic elements
Wherein the first antenna and the second antenna are symmetrically arranged at positions separated from each other to the left and right sides of the antenna body.
The method according to claim 6,
The first and second parasitic elements
Wherein the antenna is formed in a lattice structure composed of a plurality of cells.
9. The method of claim 8,
The first and second parasitic elements
And a second pattern having a reflection coefficient bandwidth of not more than -10 dB after optimization through a genetic algorithm (GA: Genetic Algorithm).
Forming an antenna body on the dielectric substrate;
Forming a zigzag-like first pattern on the antenna body at portions corresponding to right and left with respect to a vertical center portion of the dielectric substrate; And
Forming a transmission line on the antenna body by etching the first pattern;
Lt; / RTI >
The step of forming the transmission line
Forming a first transmission line extending from the first body and the second body so that first and second bodies respectively connecting upper and lower sides of the antenna body are connected;
Forming a second transmission line extending downward from the first body and formed opposite to the first transmission line on both sides; And
Forming a third transmission line extending upward from the second body and being formed to face the first transmission line with respect to the second transmission line;
Wherein the antenna comprises a first antenna and a second antenna.
11. The method of claim 10,
Forming first and second parasitic elements at positions separated from left and right sides of the antenna body,
Wherein the antenna comprises a first antenna and a second antenna.
12. The method of claim 11,
The step of forming the first and second parasitic elements
Preparing a patch plate in the form of a lattice structure composed of a plurality of cells;
Forming a second pattern on the patch plate such that the plurality of cells have a pattern by applying a genetic algorithm; And
The step of forming the first and second parasitic elements by disposing the patch plate on which the second pattern is formed at a position spaced apart from the left and right sides of the antenna body
Wherein the antenna comprises a first antenna and a second antenna.
13. The method of claim 12,
The step of forming the second pattern
Applying the genetic algorithm to the patch plate;
Measuring a bandwidth of a reflection coefficient for each pattern formed on the patch plate as the genetic algorithm is applied; And
Selecting a pattern corresponding to an optimum measurement value indicating the bandwidth of -10 dB or less among the measured values of the bandwidth to form the second pattern
Wherein the antenna comprises a first antenna and a second antenna.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102104339B1 (en) * 2019-11-14 2020-05-29 한화시스템 주식회사 Conformal antenna of low observability performance

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009213125A (en) * 2008-02-08 2009-09-17 Furukawa Electric Co Ltd:The Antenna for radar device and manufacturing method therefor
KR20090107100A (en) * 2008-04-08 2009-10-13 주식회사 이엠따블유안테나 Antenna using complex structure having period lattice of dielectric and magnetic substance
KR20120099861A (en) * 2011-03-02 2012-09-12 한국전자통신연구원 Microstrip patch antenna using planar metamaterial and method thereof
KR101411444B1 (en) * 2013-04-05 2014-07-01 경북대학교 산학협력단 Multi-band planar monopole antenna and method for manufacturing the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009213125A (en) * 2008-02-08 2009-09-17 Furukawa Electric Co Ltd:The Antenna for radar device and manufacturing method therefor
KR20090107100A (en) * 2008-04-08 2009-10-13 주식회사 이엠따블유안테나 Antenna using complex structure having period lattice of dielectric and magnetic substance
KR20120099861A (en) * 2011-03-02 2012-09-12 한국전자통신연구원 Microstrip patch antenna using planar metamaterial and method thereof
KR101411444B1 (en) * 2013-04-05 2014-07-01 경북대학교 산학협력단 Multi-band planar monopole antenna and method for manufacturing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102104339B1 (en) * 2019-11-14 2020-05-29 한화시스템 주식회사 Conformal antenna of low observability performance

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