KR101071921B1 - Antenna having pipe structure with magnetic material or dielectric material - Google Patents

Antenna having pipe structure with magnetic material or dielectric material Download PDF

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Publication number
KR101071921B1
KR101071921B1 KR1020090034360A KR20090034360A KR101071921B1 KR 101071921 B1 KR101071921 B1 KR 101071921B1 KR 1020090034360 A KR1020090034360 A KR 1020090034360A KR 20090034360 A KR20090034360 A KR 20090034360A KR 101071921 B1 KR101071921 B1 KR 101071921B1
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KR
South Korea
Prior art keywords
antenna
medium
pipe
pipe structure
dielectric
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KR1020090034360A
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Korean (ko)
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KR20100115660A (en
Inventor
임병준
전찬익
민경식
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(주)파트론
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Priority to KR1020090034360A priority Critical patent/KR101071921B1/en
Priority to PCT/KR2010/002441 priority patent/WO2010123245A2/en
Publication of KR20100115660A publication Critical patent/KR20100115660A/en
Application granted granted Critical
Publication of KR101071921B1 publication Critical patent/KR101071921B1/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
    • H01Q9/0407—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

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

Abstract

The present invention relates to an antenna having a pipe structure in which a magnetic medium or a dielectric medium is inserted, the pipe surrounding a feed pin at intervals from the feed pin centered on a feed pin connected to a conductor pattern of a feed patch of the antenna; And a pipe structure including a medium filling the inside of the pipe so that the medium does not come into contact with the radiator conductor pattern of the antenna. According to the present invention, it is possible to provide an antenna capable of moving in a frequency band without changing the permittivity or permeability of a medium and minimizing the loss of the antenna to realize a high gain.

Chip antenna, dielectric constant, feed rate, magnetic medium, dielectric medium.

Description

Antenna having pipe structure with magnetic or dielectric medium {Antenna having pipe structure with magnetic material or dielectric material}

The present invention relates to an antenna having a pipe structure in which a magnetic medium or a dielectric medium is inserted. More particularly, the present invention relates to a structure in which a magnetic medium or a dielectric medium is inserted into a pipe surrounding a feed pin of an antenna. Is at least one, and the inserted pipe-type medium is for the antennas having a single center with respect to the feeding pins of the antennas and maintaining a constant distance from each other.

The miniaturization of chip antennas can be classified into two types. First, a method of reducing the physical size by increasing the permittivity and magnetic permeability of a dielectric medium or a magnetic medium to shorten the electrical length of the antenna. The other method is to reduce the size of the chip antenna by modifying the conductor pattern of the antenna to increase the inductance component or capacitance component to lower the frequency.

A chip antenna that shortens the electrical length of an antenna according to a conventional dielectric medium or magnetic medium has a conductor of a predetermined length calculated by permittivity and permeability of the medium by contacting an antenna conductor pattern to the inside or outside of the dielectric medium or the magnetic medium. The pattern is implemented to adjust the frequency characteristics of the antenna.

Figure 1 shows a perspective view of an antenna with a medium according to the prior art 1.

As shown in FIG. 1, a chip antenna for shortening an electrical length of an antenna according to a medium includes a main radiator conductor pattern 20 of an antenna, a ground 50 of the antenna, and a main radiator conductor pattern 20 of the antenna. The dielectric medium or the magnetic medium 30 is inserted therebetween to shorten the electrical length of the antenna by the medium 30, and the feed patch conductor pattern 10 for feeding the main radiator conductor pattern 20 of the antenna is provided. It is connected to the feed pin 40.

Figure 2 shows a perspective view of an antenna with a medium according to the prior art 2.

In the prior art 2 of FIG. 2, similar to the prior art 1 of FIG. 1, the main radiator conductor pattern 20 ′ of the antenna is formed and the feed patch conductor pattern 10 ′ for feeding the main radiator conductor pattern 20 ′ of the antenna. Is connected to the feed pin 40 ', and in FIG. 2, two layers of dielectric medium or magnetic medium 30a, 30b differ between the main radiator conductor pattern 20' of the antenna and the ground 50 'of the antenna. Was inserted.

The miniaturization of the chip antenna according to the related art is such that the conductor pattern of the antenna is formed in contact with the dielectric medium or the magnetic medium in the feeding of the antenna.

However, in the chip antenna according to the related art, the operating frequency of the antenna moves to a low frequency when the conductance pattern of the antenna increases in order to reduce the size of the antenna to the characteristics of the dielectric medium or the magnetic medium, but the loss characteristics of the medium. As a result, the gain of the antenna is reduced and the frequency characteristic of the antenna is narrowed.

An object of the present invention is to provide an antenna that can reduce the size of an antenna through the characteristics of a dielectric medium or a magnetic medium in a chip antenna, and at the same time solve the problem of narrowing the gain and frequency characteristics of the antenna due to the loss characteristics of the medium.

The present invention to achieve the above technical problem, a pipe surrounding the feed pin at intervals with the feed pin centered on the feed pin connected to the conductor pattern of the feed patch of the antenna; And a pipe structure including a medium filling the inside of the pipe, wherein the medium does not come into contact with the radiator conductor pattern of the antenna.

In this case, the frequency band may be selected as the permeability change of the medium.

Preferably, a plurality of pipes having different cross-sectional areas are formed, and each of the spaces between the plurality of pipes may be formed to have a pipe structure filled with the same or different magnetic medium or dielectric medium.

Furthermore, the frequency band may be selected by adjusting the thicknesses of the plurality of pipes or the spaced distances between the plurality of pipes.

Here, the pipe may be formed in a cylindrical shape, or the pipe may be formed of a pipe having a polygonal cross section.

According to the present invention, a pipe structure in which a magnetic medium or a dielectric medium is inserted is formed so that the medium does not come into contact with the radiator conductor pattern of the antenna, thereby solving the problem of reducing the antenna gain according to the medium loss characteristic.

Furthermore, by applying a plurality of pipe structures, it is possible to move a frequency band without changing the dielectric constant or permeability of the medium, and to provide an antenna that realizes high gain by minimizing the loss of the antenna.

In addition, by applying a plurality of pipe structures it can contribute to the miniaturization and wideband of the antenna.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.

3 shows one embodiment of an antenna with a pipe structure according to the invention.

As shown in FIG. 3, a main radiator conductor pattern 120 of the antenna is formed, and a dielectric medium or a magnetic medium 130 is inserted between the main radiator conductor pattern 120 of the antenna and the ground 150 of the antenna. Can be.

In the present invention, a pipe structure 200 is formed around the feed pin 140 at regular intervals from the feed pin 140 connected to the feed patch conductor pattern 110 of the antenna.

In the embodiment of FIG. 3, the pipe 210 is cylindrical, its inner diameter is r1, and its thickness is t1, and the pipe structure 200 is formed by filling the inner space of the pipe 210 with the medium 220. The medium 220 may be filled with a magnetic medium or a dielectric medium according to the characteristics of the frequency band, and may also be filled with air.

4 shows yet another embodiment of an antenna having a pipe structure according to the invention.

In the embodiment of FIG. 4, two layers of dielectric medium or magnetic medium 130a and 130b are inserted between the main radiator conductor pattern 120 of the antenna and the ground 150 of the antenna.

The characteristic of the embodiment of Figure 4 is to form a plurality of pipe structures having different cross-sectional areas in accordance with the present invention, as shown in Figure 4 to form two cylindrical pipes (230, 240) having different cross-sectional areas The feed pin 140 is located at the center.

In FIG. 4, the first cylindrical pipe 230 has an inner diameter r2 and a thickness t2, and the second cylindrical pipe 240 has an inner diameter r3 and a thickness t3.

In addition, the inside of the first cylindrical pipe 230 may be filled with the dielectric medium or the magnetic medium 250, and the space between the first cylindrical pipe 230 and the second cylindrical pipe 240 may also be the dielectric medium or the magnetic medium 260. Can be filled with). Herein, the medium 250 filled in the interior of the first cylindrical pipe 230 and the medium 260 filled between the first cylindrical pipe 230 and the second cylindrical pipe 240 are the same type of medium or different types. Can be filled with the medium.

As such, in the embodiment of FIG. 4, the pipe structure 200a in which the media 250 and 260 are inserted into the two cylindrical pipes 230 and 240 having different cross-sectional areas is formed.

Since the pipe structure according to the present invention does not directly contact the main radiator conductor pattern of the antenna, the gain of the antenna is reduced and the characteristics of the frequency band are narrowed according to the characteristics of the medium. It becomes possible.

In addition, in a pipe structure having a plurality of pipes, the frequency band can be selected by adjusting the thickness of the pipe or the spaced distance between the pipes.

Hereinafter, the operation characteristics of the antenna having a pipe structure in which the magnetic medium or the dielectric medium is inserted will be described.

5 is a graph showing characteristics of an antenna having a short electrical length by inserting a general medium.

The graph of FIG. 5 uses a medium as air, and in this case, the resonant frequency of the frequency response graph is about 0.92 MHz.

FIG. 6 is a graph showing frequency response characteristics of the related art 2 of FIG. 2.

In the case of forming two medium layers according to the prior art 2, a frequency response graph is shown as shown in FIG. 6 according to the change in dielectric constant. As shown in FIG. 6, as the dielectric constant increases, the resonance frequency of the antenna moves to a low frequency band. It can be seen, however, that the impedance characteristic of the antenna is changed and thus the problem of narrowing the operating frequency range appears.

FIG. 7 is a graph illustrating a frequency response characteristic of an antenna having a pipe structure in which a magnetic medium or a dielectric medium is inserted according to the present invention. FIG.

As shown in FIG. 7, the frequency response characteristic is changed according to the change of the permeability of the medium. According to the present invention, the frequency can be lowered even if the medium does not have direct contact with the main radiator conductor pattern or the feed pin conductor of the antenna. It can be seen that the change in the return loss characteristic of is improved compared to the prior art.

FIG. 8 is a graph illustrating a frequency response characteristic of an antenna having a plurality of pipe structures in which a magnetic medium or a dielectric medium is inserted, according to an embodiment of the present invention.

The magnetic medium is inserted into both the first cylindrical pipe 230 and the second cylindrical pipe 240, and the optimum frequency response is achieved by changing the inner diameters r2, r3 and thicknesses t2 and t3 of the respective cylindrical pipes 230 and 240. As a graph of the frequency response characteristics obtained, when the double pipe structure according to the present invention is applied, even when the dielectric constant or permeability characteristic of the medium is not changed, the characteristic of the lower frequency band can be obtained.

9 is a graph comparing the frequency response characteristics of the antenna according to the present invention and the frequency response characteristics of the antenna according to the related art.

As shown in the graph of FIG. 9, an antenna having a pipe structure in which a magnetic medium or a dielectric medium is inserted according to the present invention solves a problem in which a frequency characteristic generated by a loss characteristic of a medium is narrowed in an antenna according to the prior art. Furthermore, it is possible to obtain the characteristics of the desired frequency band by merely adjusting the pipe thickness and the spaced distance on the pipe structure without changing the permittivity or permeability of the medium, thereby contributing to the miniaturization and widening of the antenna.

Furthermore, in the above embodiment, the antenna according to the present invention is formed by the cylindrical pipe structure, but the pipe shape may be applied in various polygonal structures such as triangle, square, and octagon. In addition, in the above embodiment, the feeding pin is a feeding structure connected vertically to the feeding patch conductor pattern, but the shape of the pipe when feeding horizontally as necessary 'a', 'b', 'c', 'd', etc. It may be applied in various forms to form an antenna according to the present invention.

Such an antenna according to the present invention forms a pipe structure in which a medium is inserted that does not directly contact the main radiator conductor pattern of the antenna, thereby minimizing the loss of the antenna and minimizing the reduction of the antenna gain.

Furthermore, when applying a plurality of pipe structures according to the present invention, it is possible to obtain an operating frequency lower than the basic operating frequency without changing the permeability or permittivity of the medium.

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 idea of the present invention but to explain, and the technical idea of the present invention is not limited by these embodiments. 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.

1 shows a perspective view of a chip antenna according to the prior art 1,

Figure 2 shows a perspective view of a chip antenna according to the prior art 2,

3 shows an embodiment of an antenna having one pipe structure according to the invention,

4 shows an embodiment of an antenna having two pipe structures according to the invention,

5 shows a frequency response graph when the medium is air,

Figure 6 shows a frequency response graph according to the prior art 2,

7 shows a frequency response graph for an antenna having one pipe structure according to the present invention,

8 shows a frequency response graph for an antenna having two pipe structures according to the present invention,

9 is a graph comparing the frequency response characteristics of the antenna according to the present invention and the frequency response characteristics of the antenna according to the related art.

<Description of Major Symbols in Drawing>

120: main emitter conductor pattern, 130, 130a, 130b: medium,

140: feed pin, 150: ground,

200, 200a: pipe structure,

210, 230, 240: cylindrical pipes,

220, 250, 260: Medium inserted inside the pipe.

Claims (6)

A pipe surrounding the feed pin at intervals from the feed pin centered on the feed pin connected to the conductor pattern of the feed patch of the antenna; And Forming a pipe structure including a medium filling the inside of the pipe, And the medium is not in contact with the radiator conductor pattern of the antenna, and the frequency band is selected by the change in the permeability of the medium. delete The method of claim 1, A plurality of pipes having different cross-sectional areas are formed, And a pipe structure in which the magnetic medium or the dielectric medium is inserted, each having a pipe structure filled with the same or different magnetic medium or dielectric medium for each space between the plurality of pipes. The method of claim 3, wherein And a frequency band is selected by adjusting thicknesses of the plurality of pipes or distances between the plurality of pipes, wherein the antenna has a pipe structure in which a magnetic medium or a dielectric medium is inserted. The method according to claim 1, 3 or 4, And a pipe structure in which a magnetic medium or a dielectric medium is inserted, wherein the pipe is cylindrical. The method according to claim 1, 3 or 4, And the pipe has a polygonal cross-section, wherein the pipe structure is inserted with a magnetic medium or a dielectric medium.
KR1020090034360A 2009-04-20 2009-04-20 Antenna having pipe structure with magnetic material or dielectric material KR101071921B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020090034360A KR101071921B1 (en) 2009-04-20 2009-04-20 Antenna having pipe structure with magnetic material or dielectric material
PCT/KR2010/002441 WO2010123245A2 (en) 2009-04-20 2010-04-20 Antenna having a pipe structure in which a magnetic medium or a dielectric medium is inserted

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020090034360A KR101071921B1 (en) 2009-04-20 2009-04-20 Antenna having pipe structure with magnetic material or dielectric material

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KR20100115660A KR20100115660A (en) 2010-10-28
KR101071921B1 true KR101071921B1 (en) 2011-10-11

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002368530A (en) 2001-06-06 2002-12-20 Ueda Japan Radio Co Ltd Micro-strip antenna
JP2006025035A (en) 2004-07-06 2006-01-26 Furukawa Electric Co Ltd:The Circular polarized wave microstrip antenna and multifrequency shared antenna

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0518111U (en) * 1991-08-09 1993-03-05 東光株式会社 Micro strip antenna
JP2002353730A (en) * 2001-05-29 2002-12-06 Kyocera Corp Patch antenna
KR20030091252A (en) * 2002-05-25 2003-12-03 주식회사 케이엠더블유 Patch antenna

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002368530A (en) 2001-06-06 2002-12-20 Ueda Japan Radio Co Ltd Micro-strip antenna
JP2006025035A (en) 2004-07-06 2006-01-26 Furukawa Electric Co Ltd:The Circular polarized wave microstrip antenna and multifrequency shared antenna

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WO2010123245A3 (en) 2011-03-31
WO2010123245A2 (en) 2010-10-28
KR20100115660A (en) 2010-10-28

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