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WO2010120001A1 - Antenne a large bande dotee d'une adaptation tubulaire - Google Patents

Antenne a large bande dotee d'une adaptation tubulaire Download PDF

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Publication number
WO2010120001A1
WO2010120001A1 PCT/KR2009/001938 KR2009001938W WO2010120001A1 WO 2010120001 A1 WO2010120001 A1 WO 2010120001A1 KR 2009001938 W KR2009001938 W KR 2009001938W WO 2010120001 A1 WO2010120001 A1 WO 2010120001A1
Authority
WO
WIPO (PCT)
Prior art keywords
matching
matching member
protrusions
antenna
impedance
Prior art date
Application number
PCT/KR2009/001938
Other languages
English (en)
Korean (ko)
Inventor
김병남
정종호
Original Assignee
(주)에이스안테나
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)에이스안테나 filed Critical (주)에이스안테나
Publication of WO2010120001A1 publication Critical patent/WO2010120001A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
    • 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
    • H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • 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
    • H01Q5/15—Resonant antennas for operation of centre-fed antennas comprising one or more collinear, substantially straight or elongated active elements
    • 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
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/378—Combination of fed elements with parasitic elements
    • 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

Definitions

  • the present invention relates to an antenna, and more particularly to a broadband antenna using tubular matching.
  • multi-band services are required for mobile communication terminals to service many frequency bands.
  • CDMA service in 824 ⁇ 894MHz band commercially available in Korea
  • PCS service in 1750 ⁇ 1870MHz band commercially
  • CDMA service in 832 ⁇ 925MHz band commercially available in Japan
  • PCS service in 1850 ⁇ 1990MHz commercially available in the US
  • Europe There is a need for a mobile communication terminal capable of providing services using various frequency bands such as GSM service of 880 ⁇ 960MHz band commercially available in China and DCS service of 1710 ⁇ 1880MHz band commercially available in some parts of Europe.
  • a composite terminal capable of using services such as Bluetooth, Zigbee, WLAN, GPS, and the like.
  • the mobile communication terminal In order to support such a multi-band service, the mobile communication terminal must be provided with a broadband antenna that can satisfy the frequency bands.
  • a helical antenna and a Planar Inverted F Antenna (PIFA) are mainly used as antennas for supporting the multi-band service.
  • the helical antenna is used together with a monopole antenna as an external antenna fixed to the top of the mobile communication terminal.
  • the antenna when the antenna is extended from the main body of the mobile communication terminal, the antenna operates as a monopole antenna, and when the antenna is extended into the main body, the antenna operates as a ⁇ / 4 helical antenna.
  • Such a helical antenna has an advantage of obtaining a high gain, but has a disadvantage in that SAR characteristics, which are harmful standards for electromagnetic waves, are not good due to non-directionality.
  • SAR characteristics which are harmful standards for electromagnetic waves
  • the helical antenna protrudes to the outside of the mobile communication terminal, there is a disadvantage that it may be inconvenient to carry the mobile communication terminal and may not be beautiful.
  • the inverted-F antenna is an antenna designed to have a low profile structure to overcome the disadvantage of the helical antenna. Specifically, in the inverted-F antenna, the beam output in the direction of the ground plane among all the beams radiated from the radiator is induced back to the radiator by the ground plane. As a result, the beam directed to the human body can be attenuated, thus improving SAR characteristics. In addition, since the beam is induced again from the ground plane to the radiator, the directivity of the beam from the radiator to the outside can be improved. As a result, the length of the planar radiator having a rectangular shape can be reduced by half, so that the inverted-F antenna can operate as a rectangular microstrip antenna, thereby realizing a low profile structure.
  • the inverted-F antenna has the advantage that the directivity and the like is improved while having a narrow frequency band when providing a multi-band (wideband) service.
  • An object of the present invention is to provide an antenna that implements a broadband through an impedance matching / feeding unit using a coupling scheme.
  • a broadband antenna includes an impedance matching / feeding unit; And a first radiating member electrically connected to the impedance matching / feeding unit.
  • the impedance matching / feeding unit has a predetermined length and includes a first matching member connected to the ground and a second matching member connected to the feeding point, and the second matching member surrounds the first matching member.
  • the first matching member and the second matching member perform impedance matching through coupling.
  • the distance between the first matching member and the second matching member is partially different.
  • the first matching member has a bent structure, and a portion of the second matching member corresponding to the first matching member may be bent in correspondence with the bending structure of the first matching member.
  • First protrusions protrude from the first matching member, second protrusions protrude from the second matching member, and the first protrusions and the second protrusions are spaced apart from each other, and the first protrusions and the first protrusions are spaced apart from each other. Some of the distances between the two protrusions may have different separation distances.
  • the second matching member has a polygonal shape or a cylindrical shape having a hole formed therein, and the first matching member has a structure inserted into a hole of the second matching member.
  • Broadband antenna is a substrate; An impedance matching / feeding unit coupled to the substrate and having a first matching member electrically connected to ground and a second matching member electrically connected to a feed point; And a first radiating member electrically connected to the impedance matching / feeding unit.
  • the matching members are arranged to be spaced apart from each other in a direction crossing the substrate, and a predetermined power is supplied from the second matching member to the first matching member through a coupling method.
  • the second matching member has a polygonal shape or a cylindrical shape having a hole formed therein, and the first matching member has a structure inserted into a hole of the second matching member.
  • the distance between the first matching member and the second matching member is partially different.
  • the first matching member has a bent structure, and a portion of the second matching member corresponding to the first matching member is bent corresponding to the bent structure of the first matching member.
  • First protrusions protrude from the first matching member, second protrusions protrude from the second matching member, and the first protrusions and the second protrusions are spaced apart from each other, and the first protrusions and the first protrusions are spaced apart from each other. Some of the distances between the two protrusions have different separation distances.
  • the broadband antenna according to the present invention performs coupling matching through the impedance matching / feeding unit, there is an advantage in that the broadband characteristics can be realized.
  • the antenna of the present invention may be implemented in a structure capable of increasing the capacitive component, and may be less affected by external factors such as hand effects.
  • the antenna of the present invention may implement diversification of the capacitive component by varying some distances between the matching members of the impedance matching / feeding part.
  • FIG. 1 is a perspective view showing a broadband antenna according to a first embodiment of the present invention.
  • FIG. 2 is a perspective view illustrating an exploded structure of the antenna of FIG. 1 according to an embodiment of the present invention.
  • FIG. 3 is a diagram schematically illustrating a broadband antenna according to a second embodiment of the present invention.
  • FIG. 4 is a diagram schematically illustrating a wideband antenna according to a third embodiment of the present invention.
  • 5 to 7 are schematic diagrams illustrating an arrangement structure of protrusions according to an exemplary embodiment of the present invention.
  • FIG. 8 is a perspective view illustrating a broadband antenna according to a fourth embodiment of the present invention.
  • FIG. 1 is a perspective view showing a broadband antenna according to a first embodiment of the present invention
  • Figure 2 is a perspective view showing an exploded structure of the antenna of Figure 1 according to an embodiment of the present invention.
  • the antenna of this embodiment is an antenna for serving a broadband and having a broadband, for example, embedded in a mobile communication terminal, and for example, may implement a GSM service band, a PCT service band, and a WCDMA service band.
  • the antenna of this embodiment includes a substrate 100, a radiating member 102, an impedance matching / feeding unit 104, and a feeding point 106.
  • the substrate 100 is made of a dielectric material having a predetermined dielectric constant.
  • the radiation member 102 is electrically connected to the impedance matching / feeding unit 104 and outputs a specific radiation pattern when a predetermined power is supplied through the impedance matching / feeding unit 104.
  • the impedance matching / feeding unit 104 implements a broadband using a coupling method to solve the problem of the inverted F antenna having a narrow frequency band.
  • the impedance matching / feeding unit 104 is connected to the substrate 100, and the first matching member 200 is electrically connected to the ground of the substrate 100 as shown in FIGS. 2A and 2B. ) And a second matching member 202 electrically connected to the feed point 106.
  • the first matching member 200 is arranged in a direction perpendicular to the substrate 100 while being connected to the ground, and is fed from the second matching member 202 through a coupling method.
  • the radiating member 102 is electrically connected to the first matching member 200 as shown in FIGS. 1 and 2, a predetermined power is supplied to the radiating member 102 through the second matching member 202.
  • the specific radiation pattern is output from the radiation member 102.
  • the second matching member 202 is arranged to be spaced apart from the first matching member 200 by a predetermined distance while being electrically connected to the feed point 106.
  • the second matching member 202 may have a structure surrounding the first matching member 200, for example, a tubular structure, as shown in FIGS. 1 and 2.
  • the second matching member 202 may have a rectangular parallelepiped shape, a hole is formed in the center thereof, and the first matching member 200 may be inserted into the hole.
  • the second matching member 202 may have various shapes such as a polygonal shape or a cylindrical shape other than a rectangular parallelepiped shape.
  • coupling matching is performed between the first matching member 200 and the second matching member 202.
  • the capacitive component among the capacitive component and the inductive component acts as a main element of the coupling matching.
  • the antenna of the present embodiment smoothly performs impedance matching for wideband by varying capacitive components as described below.
  • the spacing between the first matching member 200 and the second matching member 202 may be all the same, but may be partially different. As such, if a part of the gap is set differently, the capacitive component between the matching members 200 and 202 is partially changed due to the gap difference. That is, the spacing between the matching members 200 and 202 may be partially set to vary the capacitive components of the matching members 200 and 202. Detailed description thereof will be described later with reference to the accompanying drawings.
  • the radiating member 102 is electrically connected to the first matching member 200 as mentioned above.
  • the frequency band of the antenna may be implemented by appropriately setting the length of the radiating member 102 and the length of the impedance matching / feeding unit 104.
  • the antenna of the present embodiment implements the impedance matching / feeding unit 104 in a coupling manner.
  • the second matching member 202 in the impedance matching / feeding unit 104 has a structure surrounding the first matching member 200, the first matching member from the second matching member 202 during coupling feeding.
  • the coupling amount fed to 200 may be increased than that in the antenna of the structure in which the matching members face each other, thereby enabling broadband implementation.
  • the second matching member 202 is shown to completely surround the first matching member 200, but a part of the second matching member 202 has an open state and has a first matching structure.
  • the member 200 may be surrounded.
  • the second matching members spaced apart from each other should be electrically connected to feeders, respectively, and the first matching members are also electrically connected to ground.
  • the radiating member 102 is implemented to satisfy only one resonance frequency, the radiating member 102 may have various structures so as to implement a multi-band by itself.
  • 3 is a diagram schematically illustrating a broadband antenna according to a second embodiment of the present invention. 3 is a cross-sectional view of the impedance matching / feeding unit 104 cut in the vertical direction.
  • a portion of the first matching member 200 located in the second matching member 202 may be bent.
  • the distance S1 between the unbent portion of the first matching member 200 and the second matching member 202 and the bent portion of the first matching member 200 and the second matching member 202 are described.
  • the distance S2 is different.
  • the capacitive component between the matching members 200 and 202 is partially different, that is, the capacitive component is diversified to satisfy the broadband characteristics.
  • the first matching member 200 is bent only once, but may be bent more than once.
  • the second matching member 202 may also be bent. That is, the bending structure of the matching members 200 and 202 of the impedance matching / feeding part 104 may be variously modified as long as some of the distances between the matching members 200 and 202 have different separation distances.
  • the structure of the impedance matching / feeding unit 104 may be set differently so as to differently set a distance of a part of the distances between the first matching member 200 and the second matching member 202. It may be.
  • the first matching member 200 may be inserted into the hole of the second matching member 202, and the first matching member 200 may be arranged obliquely (in a diagonal direction) within the second matching member 202. Can be.
  • the distances between the matching members 200 and 202 have different separation distances, so that the capacitive component can be diversified.
  • the wideband antenna of the present embodiment diversifies the capacitive component through a method of bending or diagonally arranging at least one of the matching members 200 and 202 of the impedance matching / feeding part 104.
  • 4 is a diagram schematically illustrating a wideband antenna according to a third embodiment of the present invention.
  • 5 to 7 are schematic diagrams illustrating an arrangement structure of protrusions according to an exemplary embodiment of the present invention. 4 to 7 illustrate only a part 202a of the second matching member 202, not the whole of the second matching member 202.
  • At least one first protrusion 400 protrudes from the first matching member 200, and at least one second protrusion 402 from the second matching member 202. Protrudes.
  • the first protrusions 400 and the second protrusions 402 are arranged at a predetermined distance apart, for example, cross each other.
  • protrusions 400 and 402 have made the distance between the matching members 200 and 202 substantially close, resulting in the acquisition of larger capacitive components.
  • the distances between the first protrusions 400 and the second protrusions 402 may all be the same, but some may have different separation distances.
  • the capacitive component between the first matching member 200 and the second matching member 202 is partially different, and thus wideband matching is made possible by the diversification of the capacitive component.
  • the second protrusions 402 may be formed on all of the inner surfaces of the rectangular parallelepiped, and the second matching member 202 may have a second shape only on some internal surfaces. Protrusions 402 may be formed.
  • the antenna of the present embodiment performs wideband matching by varying capacitive components by forming protrusions 400 and 402 in the matching members 200 and 202, respectively.
  • the impedance matching / feeding portion 104 has a larger capacitive component due to the protrusions 400 and 402, the antenna has less influence on external factors such as hand effects due to the large capacitance. You can get
  • first protrusions 400 and the second protrusions 402 protrude from the first matching member 200 and the second matching member 202, respectively.
  • first protrusions 400 may protrude only from the first matching member 200, and the second protrusions 402 may not protrude from the second matching member 202.
  • second protrusions 402 may protrude only on the second matching member 202, and the first protrusions 400 may not protrude on the first matching member 200.
  • the lengths of the protrusions 400 and 402 are the same, but their width is partially different, so that the first protrusions 400 and the second protrusions 402 are different. Some of the distances between) may have different separation distances.
  • the distances between the first protrusions 400 and the second protrusions 402 by varying the length of some of the protrusions 400 and 402 as shown in FIG. 6. Some of them may have different separation distances.
  • the first protrusions 400 may all have the same length while some of the second protrusions 402 may have different lengths.
  • the second protrusions 402 all have the same length, some of the first protrusions 400 may be implemented to have different lengths. Even in this case, since some of the distances between the first protrusions 400 and the second protrusions 402 have different separation distances, the capacitive component can be diversified.
  • the protrusions 400 and 402 may have a structure other than rectangular.
  • the structure of the impedance matching / feeding unit 104 may be modified in various ways as long as the capacitive component can be diversified.
  • FIG. 8 is a perspective view illustrating a broadband antenna according to a fourth embodiment of the present invention.
  • the broadband antenna of the present embodiment has a structure similar to that of FIG. 1, the same reference numerals are added to the same components.
  • the antenna of the present embodiment includes a substrate 100, a first radiating member 102, a first matching member 200, a second matching member 202, a feed point 106, and a second radiating member. 800. That is, the antenna of this embodiment further includes a second radiating member 800 than in the antennas of other embodiments.
  • the second radiating member 800 is arranged spaced apart from the first radiating member 102 and the impedance matching / feeding part 104, respectively.
  • the second radiating member 800 may have a shorter length than the first radiating member 102, in which case the second radiating member 800 implements a higher frequency band than the first radiating member 102. do.
  • the second radiating member 800 may be electrically connected to the feed point 106 of the substrate 100 or may be electrically connected to the first matching member 200. That is, the second radiation member 800 is directly fed from the feed point 106.
  • the second radiating member 800 is connected to the ground of the substrate 100 and is fed from the second matching member 202 of the impedance matching / feeding part 104 through a coupling scheme. I can receive it.
  • the second radiating member 800 has a straight rod shape, but may have other various shapes.
  • the second radiating member 800 may have a shape in which its end is bent. That is, the structure of the second radiating member 800 may be variously modified.
  • the second radiating member 800 may have a structure that can implement a multi-band by itself.
  • the second radiating member is not present, but the second radiating member may be applied to the first to third embodiments.
  • the antenna of the present embodiment does not have a bent or protruding structure
  • the bent and protruding structures of the first to third embodiments may be applied to the antenna of the present embodiment.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Details Of Aerials (AREA)

Abstract

L'invention concerne une antenne à large bande dotée d'une adaptation tubulaire. Cette antenne comprend une partie adaptation d'impédance et alimentation électrique et un premier élément émetteur connecté électriquement à la partie adaptation d'impédance et alimentation électrique. Ladite partie comprend un premier élément d'adaptation d'une longueur prédéterminée connecté à la terre et un deuxième élément d'adaptation connecté à un point d'alimentation électrique, ce deuxième élément présentant une structure destinée à entourer le premier élément.
PCT/KR2009/001938 2009-04-15 2009-04-15 Antenne a large bande dotee d'une adaptation tubulaire WO2010120001A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020090032737A KR101053105B1 (ko) 2009-04-15 2009-04-15 관형 매칭을 이용한 광대역 안테나
KR10-2009-0032737 2009-04-15

Publications (1)

Publication Number Publication Date
WO2010120001A1 true WO2010120001A1 (fr) 2010-10-21

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Application Number Title Priority Date Filing Date
PCT/KR2009/001938 WO2010120001A1 (fr) 2009-04-15 2009-04-15 Antenne a large bande dotee d'une adaptation tubulaire

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WO (1) WO2010120001A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1013139A (ja) * 1996-06-19 1998-01-16 Murata Mfg Co Ltd 表面実装型アンテナおよびこれを用いた通信機
JP2001036317A (ja) * 1999-07-16 2001-02-09 Murata Mfg Co Ltd アンテナ構造およびそのアンテナ構造を備えた通信装置
KR20040010266A (ko) * 2002-07-19 2004-01-31 가부시키가이샤 요코오 표면 실장형 안테나 및 그것을 탑재한 휴대형 무선 장치
JP2006197254A (ja) * 2005-01-13 2006-07-27 Sakae Riken Kogyo Co Ltd 自動車用アンテナ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1013139A (ja) * 1996-06-19 1998-01-16 Murata Mfg Co Ltd 表面実装型アンテナおよびこれを用いた通信機
JP2001036317A (ja) * 1999-07-16 2001-02-09 Murata Mfg Co Ltd アンテナ構造およびそのアンテナ構造を備えた通信装置
KR20040010266A (ko) * 2002-07-19 2004-01-31 가부시키가이샤 요코오 표면 실장형 안테나 및 그것을 탑재한 휴대형 무선 장치
JP2006197254A (ja) * 2005-01-13 2006-07-27 Sakae Riken Kogyo Co Ltd 自動車用アンテナ

Also Published As

Publication number Publication date
KR101053105B1 (ko) 2011-08-01
KR20100114281A (ko) 2010-10-25

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