KR101674140B1 - Broadband circularly polarized antenna using embedded structure - Google Patents

Broadband circularly polarized antenna using embedded structure Download PDF

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Publication number
KR101674140B1
KR101674140B1 KR1020150124417A KR20150124417A KR101674140B1 KR 101674140 B1 KR101674140 B1 KR 101674140B1 KR 1020150124417 A KR1020150124417 A KR 1020150124417A KR 20150124417 A KR20150124417 A KR 20150124417A KR 101674140 B1 KR101674140 B1 KR 101674140B1
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South Korea
Prior art keywords
slot
patch
microstrip line
length
embedded structure
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KR1020150124417A
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Korean (ko)
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황금철
권지나
송찬미
윤종헌
윤주호
이종민
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성균관대학교산학협력단
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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
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0428—Substantially flat resonant element parallel to ground plane, e.g. patch antenna radiating a circular polarised wave
    • 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
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/24—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
    • 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
    • H01Q9/0485—Dielectric resonator antennas

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Abstract

The present invention relates to a broadband circular polarization antenna using an embedded structure, and more particularly to a broadband circular polarization antenna which can release broadband circular polarization characteristic using a simple power feeding method. The broadband circular polarization antenna includes a dielectric substrate, a ground plane formed on the upper surface of the dielectric substrate, a slot having a spidron fractal shape formed on the ground plane, a microstrip line which is formed on the lower surface of the dielectric substrate and performs a function as a feeder line, and a patch of a spidron fractal shape located in the slot. So, a wideband circular polarization antenna can be realized without using a multilayer substrate or a complex power feeding structure.

Description

BROADBAND CIRCULARLY POLARIZED ANTENNA USED EMBEDDED STRUCTURE USING EMBEDDED STRUCTURE

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadband circularly polarized antenna, and more particularly, to an antenna exhibiting broadband circular polarization characteristics using an embedded structure of a speedrone fractal shape.

An antenna is a wire installed in the air for efficiently radiating electromagnetic waves to a space in order to achieve a communication purpose in wireless communication or for efficiently inducing an electromotive force by radio waves and for transmitting or receiving an electromagnetic wave to / to be.

On the other hand, circular polarization is widely used in the field of modern communication systems because it is resistant to a communication environment where propagation disturbance and polarization distortion in space are concerned, and can mitigate multipath fading.

The microstrip patch antenna is used as one of the structures of the antenna for circular polarization, and it is used in various communication fields because of its small size, light weight and thin characteristics, and easy production and mass production.

However, since a microstrip patch antenna has a short impedance bandwidth of about 1 to 2%, it is difficult to implement a broadband circularly polarized antenna using a microstrip patch antenna.

Currently, much research has been carried out to improve the axial ratio bandwidth. For this purpose, conventionally, a lamination method, a parasitic element addition method, or a dual feed method has been used. However, these methods increase the size of the antenna, It is accompanied by disadvantages of becoming complicated.

Therefore, it is necessary to study a circularly polarized antenna that can realize a wideband circular polarization characteristic by using a simple power feeding method.

Korean Patent No. 10-0944968 entitled "Broadband circularly polarized antenna of speedron fractal structure" (published Mar. 3, 2010)

SUMMARY OF THE INVENTION [0008] In order to solve the above problems, an object of the present invention is to provide a broadband circular polarization antenna using an embedded structure including a fastron fractal shape slot and a speedron fractal shape patch In the future.

According to another aspect of the present invention, there is provided a broadband circularly polarized antenna using an embedded structure including a dielectric substrate, a ground plane formed on an upper surface of the dielectric substrate, a slot formed in the ground plane, A feeder line formed on a lower surface of the dielectric substrate and serving as a feeder line, and a patch of a speedron fractal shape located in the slot.

The feed line may include a first microstrip line having a constant width and a second microstrip line extending from the first microstrip line to increase the width of the feed line according to an exemplary embodiment of the present invention.

The speedron fractal shape according to an embodiment of the present invention is formed by successively connecting right triangles having the same size of the first interior angle and a constant reduction ratio.

The speedron fractal shape according to an embodiment of the present invention is characterized in that the first right-angled triangle to the nth right-angled triangle are sequentially combined.

In addition, the first internal angle of the slot according to an embodiment of the present invention is 30 to 33 degrees.

Further, the antenna according to an embodiment of the present invention is characterized in that a slit is additionally formed in a hypotenuse of a second right-angled triangle forming the slot.

In addition, the patch according to an embodiment of the present invention is located within the slot with a predetermined horizontal gap and a vertical gap based on the height and the base of the first right triangle forming the slot.

Also, the length of the horizontal gap according to an embodiment of the present invention may be determined by the size of the first internal angle of the slot, the size of the first internal angle of the patch, the height of the first right triangle forming the slot, The height of the first right triangle to be formed and the vertical interval between the slot and the patch are fixed variables and the length of the horizontal interval is set as a variable to determine the value when the frequency bandwidth showing the circular polarization characteristic is maximum .

Also, the first internal angle of the slot according to an embodiment of the present invention is 33 degrees, and the ratio of the length of the horizontal interval to the length of the vertical interval is 3 / 0.5 to 7 / 0.5.

At this time, the ratio is most preferably 5 / 0.5.

The present invention can realize a wideband circularly polarized antenna without using a multilayer substrate or a complex power feeding structure.

1 is a view for explaining a shape of a speedron fractal applied in the present invention.
2 is a plan view of a broadband circularly polarized antenna using an embedded structure according to an embodiment of the present invention.
3 is a side view of a broadband circular polarization antenna using an embedded structure according to an embodiment of the present invention.
FIG. 4 is a graph showing the results of a comparison between a fast circular fractal slot antenna according to a comparative example, a broadband circular polarized antenna using a slitless embedded structure according to the first embodiment of the present invention, and an embedded structure having a slit according to the second embodiment of the present invention 1 is a diagram schematically showing a configuration of a broadband circularly polarized antenna.
5A is a top view of a broadband circularly polarized antenna using an embedded structure manufactured based on the numerical values in Table 1. FIG.
5B is a bottom view of a broadband circularly polarized antenna using an embedded structure manufactured based on the numerical values in Table 1.
6 is a graph showing simulation results for comparing reflection coefficient characteristics of each antenna shown in FIG.
FIG. 7 is a graph showing simulation results for comparing the axial ratio characteristics of the respective antennas shown in FIG.
FIG. 8 is a graph showing simulation results for expressing reflection coefficient characteristics according to a first internal angle of a Speedron fractal slot of a broadband circularly polarized antenna using an embedded structure according to an embodiment of the present invention.
FIG. 9 is a graph showing simulation results for illustrating the axial ratio characteristics according to the first internal angle of the speedrone fractal slot of the broadband circularly polarized antenna using the embedded structure according to an embodiment of the present invention.
FIG. 10 is a graph showing simulation results for expressing reflection coefficient characteristics according to lengths of a space between a slot and a patch of a speedrone fractal shape of a broadband circular polarized antenna using an embedded structure according to an embodiment of the present invention.
11 is a graph showing a simulation result for showing the axial ratio characteristics according to the lengthwise interval between the slot and the patch of the speedron fractal shape of the broadband circularly polarized antenna using the embedded structure according to the embodiment of the present invention.
FIG. 12 is a graph comparing simulation results and measurement results of a reflection coefficient of a broadband circularly polarized antenna using an embedded structure according to an embodiment of the present invention. Referring to FIG.
13 is a graph comparing simulation results and measured results of the axial ratio and gain of a broadband circularly polarized antenna using an embedded structure according to an embodiment of the present invention.
FIG. 14 is a graph illustrating a simulation result of a broadband circularly polarized antenna using an embedded structure according to an embodiment of the present invention at 3.6 GHz and a radiation pattern according to measurement results. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to facilitate a person skilled in the art to easily carry out the technical idea of the present invention. . In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

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

1 is a view for explaining a shape of a speedron fractal applied in the present invention. Referring to FIG. 1, a fractal structure is a structure in which a certain unit shape is repeatedly bent repeatedly infinitely, and the fractal structure has properties of self-similarity and recursiveness.

On the other hand, a spidron is a geometrical structure in which isosceles triangles are mutually alternately joined to each other. In the antenna of the present invention, as shown in Iteration 1 of FIG. 1, an isosceles triangle having a base angle of? By connecting isosceles triangles whose base is γ, the result is a right triangle with two interior angles α and γ.

Here, a right triangle shown in Iteration 1 of FIG. 1 for forming a speedron fractal shape is defined as a first right triangle 10, and the first right triangle 10 has an isosceles Triangle and an isosceles triangle whose base angle is γ.

The first right triangle 10 has two interior angles formed on both sides with respect to the hypotenuse. An angle formed by the height of the first right triangle 10 and the hypotenuse is defined as the angle of the first right triangle 10 Is defined as a first internal angle alpha and an angle formed by the bottom surface of the first right triangle 10 and the hypotenuse is defined as a second internal angle? Of the first right triangle 10.

In order to form the speedrone fractal shape, a side constituting a part of the hypotenuse of the first right-angled triangle 10 among the two sides having the same length of the isosceles triangle having the base angle? In the first right-angled triangle 10 is set as a base An isosceles triangle having a base angle of? And an isosceles triangle having a base angle of? Are connected in an alternating manner. As a result, a second right triangle having two inner angles? And? Is connected to the first right triangle 10.

That is, the speedron fractal shape is formed by successively connecting right triangles having the same size of the first interior angle and a constant reduction ratio.

In the above-described manner, the speedrone fractal shape may be formed by sequentially combining the first right-angled triangle to the n-th right-angled triangle, and each right-angled triangle may have a reduced scale or a reduced length .

The speedrone fractal shape shown in Iteration 3 of FIG. 1 is formed by sequentially connecting first right-angled triangles to third right-angled triangles whose scales are reduced to a certain scale.

The speedron fractal shape shown in Iteration 7 of FIG. 1 is formed by successively connecting first to sixth right-angled triangles which are scaled down to a certain scale.

As a result, it is preferable that the speedron fractal shape is formed so that the reduction ratio of the right triangle constituting the speedron fractal shape is constant, and the right triangle of the same shape is formed by repeatedly joining at least twice .

1, the first internal angle of the right triangle is 30 degrees and the second internal angle is 60 degrees. In this case, the reduction ratio of the connected right triangle satisfies Equation 1 below.

[Equation 1]

Figure 112015085496114-pat00001

(Where P n is the height of the nth right triangle and P n +1 is the height of the (n + 1) th right triangle)

FIG. 2 is a plan view of a broadband circularly polarized antenna using an embedded structure according to an embodiment of the present invention, and FIG. 3 is a side view of a broadband circularly polarized antenna using an embedded structure according to an embodiment of the present invention.

Referring to the drawings, a broadband circular polarized wave antenna using an embedded structure according to an embodiment of the present invention includes a dielectric substrate 24 having a predetermined width and a length g w and having a predetermined thickness h, A ground plane 21 is formed on an upper surface of the ground plane 21, and a slot 100 of a speedron fractal shape is formed in the ground plane 21.

A feed line (25) for performing a function as a feed line may be formed on the lower surface of the dielectric substrate (24). The feed line 25 includes a first microstrip line having a predetermined length f 2 and having a constant width y 1 and a predetermined length f 1 , And a second microstrip line whose width is increased to a predetermined maximum width (y 2 ). The feed line 25 may be spaced apart from the feeding line 25 by a predetermined distance f x with a side corresponding to the length of h 1 of the first right triangle constituting the speedlone fractal shaped slot 100 as a reference line. have.

Within the slots 100 of the speedron fractal shape, there is a patchiron 200 in the form of a speedron fractal. That is, the broadband circularly polarized antenna using the embedded structure according to an embodiment of the present invention has an embedded structure in which a patch 200 in the form of a fractal fractal is located in the slot 100 of the fractal fractal shape . At this time, it is preferable that the speedron fractal patch 200 is formed of the same material as the ground plane 21.

The velocity fractal fractal patch 200 is represented by h 2 of the first right triangle forming the patch 200 and the side represented by h 1 of the first right triangle forming the slot 100 has a mutation certain horizontal distance (n 1), the base of the first right triangle forming the base line and the patch 200 of the first right-angled triangle which forms the slot 100 of a predetermined vertical space (n 2) In the slot (100). At this time, it is preferable that the horizontal interval n 1 is larger than the vertical interval n 2 .

A slit 110 having a small gap may be further formed at the hypotenuse of the second right-angled triangle forming the slotted 100 of the speedrone fractal shape. The length S y of the slit 110 is preferably greater than the width S w .

The slit 110 is spaced apart by a predetermined distance x 1 from a point at which the hypotenuse of the first right triangle forming the slotted fractal shape 100 intersects with the apex angle of the second right triangle And may be formed to be inclined by a predetermined angle? With the hypotenuse of the second right triangle forming the slotted fractal shape 100 as a reference line.

The dielectric substrate 24 may be, for example, a RF-35 substrate or a PCB substrate such as a glass epoxy (FR-4), or a conventional dielectric substrate 24 known in the art may be used.

In addition, an SMA connector 23 may be attached to one side of the dielectric substrate 24 and connected to the feed line 25 and the ground plane 21.

Hereinafter, a broadband circularly polarized antenna using an embedded structure according to the present invention will be described in detail with reference to embodiments of the present invention. However, these examples are for illustrative purposes only, and the scope of the present invention is not limited to these examples.

FIG. 4 is a graph showing the results of a comparison between a fast circular fractal slot antenna according to a comparative example, a broadband circular polarized antenna using a slitless embedded structure according to the first embodiment of the present invention, and an embedded structure having a slit according to the second embodiment of the present invention 1 is a diagram schematically showing a configuration of a broadband circularly polarized antenna.

4 (a) has a structure in which a slot having a speedron fractal shape is formed on a ground plane, and a slit-less embedded structure according to the first embodiment of FIG. 4 (b) A wideband circularly polarized antenna using a slit-embedded structure according to the second embodiment of FIG. 4 (c) has a structure in which a patch of a speedron fractal shape is formed in a slot of a speedron fractal shape, b shows a structure in which a slit is formed in the antenna shown in Fig.

Parameter Value h 1 35 mm alpha 33 ° h 2 20 mm beta 30 ° n 1 5 mm n 2 0.5 mm h 1.52 mm d 2.5 mm g w 40 mm s y 6 mm s w 0.5 mm δ 96 ° x 1 3.83 mm f 2 18 mm y 2 11.1 mm f x 20 mm f 1 7 mm y 1 3 mm

For each variable shown in FIG. 2 to FIG. 4 and so on, for the fixed variable excluding some variable, the simulation was performed by applying the values in Table 1 above.

FIG. 5A is a photograph of a top view of a broadband circular polarized antenna using an embedded structure manufactured on the basis of the numerical values in Table 1, and FIG. 5B is a bottom view of a broadband circular polarized antenna using an embedded structure based on the values in Table 1. Here, the dielectric substrate 24 was an RF-35 substrate having a dielectric constant of 3.5.

FIG. 6 is a graph showing simulation results for comparing the reflection coefficient characteristics of the respective antennas shown in FIG. 4, and FIG. 7 is a graph showing simulation results for comparing the axial ratio characteristics of the respective antennas shown in FIG.

In order to be able to operate as an antenna, it is preferable that the reflection coefficient is less than -10 dB, and when it exceeds -10 dB, the performance of the antenna is generally lowered. The antenna can be seen to exhibit circular polarization characteristics when the axial ratio is less than 3 dB in the frequency band where the reflection coefficient is less than -10 dB.

6 and 7, in a slot 100 of the speedrone fractal shape according to the first embodiment, the speed 100 is formed in the slot 100 of the speedrone fractal shape on the ground plane 21 according to the comparative example, The antennas using the embedded structure in which the antennas to which the patches 200 of Ron fractal shape are added have a wide frequency bandwidth in which the circular polarization characteristics are exhibited and the slit-shaped slots 110 according to the second embodiment are added, It is confirmed that the frequency bandwidth showing the circularly polarized characteristic is larger.

FIG. 8 is a graph showing a simulation result for showing a reflection coefficient characteristic according to a first internal angle of a slot of a broadband circularly polarized antenna using an embedded structure according to an embodiment of the present invention. FIG. 5 is a graph showing a simulation result for representing an axial ratio characteristic according to a first internal angle of a slot of a broadband circularly polarized antenna using an embedded structure according to an example.

As shown, the reflection coefficient and the axial ratio change as the size of the first internal angle alpha of the slotted fractal 100 shape changes. Specifically, the first internal angle alpha of the slotted fractal 100 changes, It can be seen that impedance matching is improved by balancing the capacitance value of the slot 100 and the inductance value of the feed line as the size increases. The first internal angle alpha of the slotted fractal fractal 100 has a circular polarization characteristic only in the frequency band near 3.1 GHz in the case of 30 degrees and 31.5 degrees.

It was confirmed that the frequency bandwidth exhibiting the circular polarized wave characteristic is the largest when the size of the first internal angle alpha of the slotted fractal shape 100 is 33 °.

FIG. 10 is a graph showing a simulation result for showing reflection coefficient characteristics according to a length of a horizontal gap between a slot and a patch of a speedrone fractal shape of a broadband circular polarized antenna using an embedded structure according to an embodiment of the present invention. 11 is a graph showing a simulation result to show the axial ratio characteristics according to the lengthwise interval between the slot and the patch of the speedrone fractal shape of the broadband circular polarized antenna using the embedded structure according to the embodiment of the present invention.

As can be seen, as the length of the horizontal interval n 1 increases, the reflection coefficient bandwidth becomes narrower and the axial ratio characteristic also changes. It is known that when the length of the horizontal interval n 1 is 5 mm, It is confirmed that the frequency bandwidth indicated is the largest.

As described above, in order to exhibit the broadband circular polarization characteristic, the simulation is performed in such a manner that the side represented by h 1 of the first right triangle forming the slot 100 and the side of the first right triangle h 2 To determine the length of the optimal transverse spacing (n 1 ) between the sides represented by.

The length of the transverse space n 1 is determined by the size of the first internal angle of the slot 100, the size of the first internal angle of the patch 200, The height h 1 of the first right triangle, the height h 2 of the first right triangle forming the patch 200 and the vertical distance n 2 between the slot 100 and the patch 200 are fixed And the length of the horizontal interval (n 1 ) is changed as a variable variable, while the frequency bandwidth representing the circular polarization characteristic is the maximum.

At this time, when the size of the first cabinet (α) of the slot 100 is 33 °, the ratio of the length in the longitudinal and the vertical space (n 2) of the horizontal distance (n 1) (n 1 / n 2 ) Is preferably 3 / 0.5 to 7 / 0.5, and most preferably the ratio (n 1 / n 2 ) is 5 / 0.5.

12 is a graph comparing simulation results and measurement results of a reflection coefficient of a broadband circularly polarized antenna using an embedded structure according to an embodiment of the present invention. As shown, the simulated reflection coefficient bandwidth of -10 dB or less is 2.47-4.10 GHz (49.62%), and the measurement result is 2.57-4.16 GHz (47.25%). As a result, Are significantly coincident with each other.

13 is a graph comparing simulation results and measurement results of the axial ratio and the gain of the broadband circularly polarized antenna using the embedded structure according to an embodiment of the present invention. The axial ratios and gains were simulated and measured in the + z axis direction (θ = 0 °) and the bandwidth representing the simulated axial ratio of less than 3 dB was 2.74-4.00 GHz (37.39%) as shown, Was 3.09-4.13 GHz (28.81%). The measured gain within the 3 dB or less axial bandwidth is 2.12 dBic to 3.56 dBic, which indicates that the measurement results and the simulation results are generally in agreement.

FIG. 14 is a graph illustrating a simulation result of a broadband circularly polarized antenna using an embedded structure according to an embodiment of the present invention at 3.6 GHz and a radiation pattern according to measurement results. FIG.

Referring to FIG. 14, it can be seen that the measurement results and the simulation results are substantially in agreement, and the broadband circularly polarized antenna using the embedded structure according to the embodiment of the present invention exhibits the directivity characteristic in the + z- It can be confirmed that the circular polarization characteristic is well realized when the difference between the left polarization (LHCP) and the postal wave (RHCP) measured in the axial direction is more than 20 dB.

As described above, an optimal embodiment has been disclosed in the drawings and specification. Although specific terms have been employed herein, they are used for purposes of illustration only and are not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will appreciate that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10: first right triangle
21: Ground plane
23: SMA connector
24: dielectric substrate
25: feeder line
100: Slot
110: slit
200: Patch

Claims (10)

A dielectric substrate;
A ground plane formed on an upper surface of the dielectric substrate;
A slot having a speedron fractal shape formed on the ground plane;
A feeder line formed on a lower surface of the dielectric substrate and serving as a feeder line; And
A patch of a speedron fractal shape located in said slot,
Wherein the speedron fractal shape is formed by successively connecting right triangles having the same size of the first interior angle and having a constant reduction ratio, the first right triangle to the nth right triangle being sequentially connected,
Wherein the patch has a horizontal gap defined by a height of a first right-angled triangle forming the slot and a height of a first right-angled triangle forming the patch, the first right-angled triangle forming the slot And the base of the first right-angled triangle forming the patch is positioned within the slot so as to have a predetermined vertical interval.
The method according to claim 1,
The feed line includes a first microstrip line having a constant width;
And a second microstrip line extending from the first microstrip line and increasing in width. The antenna according to claim 1, wherein the first microstrip line extends in the first microstrip line and the second microstrip line extends in the first microstrip line.
delete delete The method according to claim 1,
And the first internal angle of the slot is 30 ° to 33 °.
The method according to claim 1,
And a slit formed at a hypotenuse of a second right triangle forming the slot. ≪ RTI ID = 0.0 > [10] < / RTI >
delete The method according to claim 1,
The length of the horizontal gap
The height of the first right triangle forming the patch, the height of the first right triangle forming the patch, and the vertical distance between the slot and the patch As a fixed variable,
Wherein the width of the horizontal gap is determined as a variable when the frequency bandwidth representing the circular polarization characteristic is the maximum.
The method according to claim 1,
The size of the first internal angle of the slot is 33 [deg.],
Wherein a ratio (n 1 / n 2 ) of the length (n 1 ) of the horizontal interval to the length (n 2 ) of the vertical interval is 3 / 0.5 to 7 / 0.5.
10. The method of claim 9,
Wherein a ratio (n 1 / n 2 ) of the length (n 1 ) of the horizontal interval to the length (n 2 ) of the vertical interval is 5 / 0.5.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110190388A (en) * 2019-05-26 2019-08-30 天津大学 A kind of omnidirectional corner type microstrip gap broad-band antenna
CN110880643A (en) * 2019-12-06 2020-03-13 长安大学 24 GHz's car anticollision radar antenna
KR102172736B1 (en) * 2019-12-23 2020-11-02 성균관대학교 산학협력단 Broadband circularly polarized antenna using t-shaped slot
CN117673733A (en) * 2023-12-13 2024-03-08 电子科技大学 Low-profile broadband circularly polarized antenna

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KR20060096258A (en) * 2005-03-02 2006-09-11 삼성전자주식회사 Ultra wide band antenna for filtering predetermined frequency band signal, and, ultra wide band signal receiving system therewith
KR20090118188A (en) * 2008-05-13 2009-11-18 주식회사 케이티테크 Micro strip patch antenna
KR100944968B1 (en) 2008-10-14 2010-03-03 동국대학교 산학협력단 Broadband circularly-polarized spidron fractal antenna
KR100962930B1 (en) * 2008-09-01 2010-06-10 강원대학교산학협력단 Ultra-wide-band antenna having quarter-slot and method for manufacturing the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060096258A (en) * 2005-03-02 2006-09-11 삼성전자주식회사 Ultra wide band antenna for filtering predetermined frequency band signal, and, ultra wide band signal receiving system therewith
KR20090118188A (en) * 2008-05-13 2009-11-18 주식회사 케이티테크 Micro strip patch antenna
KR100962930B1 (en) * 2008-09-01 2010-06-10 강원대학교산학협력단 Ultra-wide-band antenna having quarter-slot and method for manufacturing the same
KR100944968B1 (en) 2008-10-14 2010-03-03 동국대학교 산학협력단 Broadband circularly-polarized spidron fractal antenna

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110190388A (en) * 2019-05-26 2019-08-30 天津大学 A kind of omnidirectional corner type microstrip gap broad-band antenna
CN110880643A (en) * 2019-12-06 2020-03-13 长安大学 24 GHz's car anticollision radar antenna
KR102172736B1 (en) * 2019-12-23 2020-11-02 성균관대학교 산학협력단 Broadband circularly polarized antenna using t-shaped slot
CN117673733A (en) * 2023-12-13 2024-03-08 电子科技大学 Low-profile broadband circularly polarized antenna

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