WO2010067930A1 - Élément de rayonnement bi-bande de taille réduite - Google Patents

Élément de rayonnement bi-bande de taille réduite Download PDF

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Publication number
WO2010067930A1
WO2010067930A1 PCT/KR2009/002580 KR2009002580W WO2010067930A1 WO 2010067930 A1 WO2010067930 A1 WO 2010067930A1 KR 2009002580 W KR2009002580 W KR 2009002580W WO 2010067930 A1 WO2010067930 A1 WO 2010067930A1
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WO
WIPO (PCT)
Prior art keywords
antenna
low frequency
radiation
radiation substrate
high frequency
Prior art date
Application number
PCT/KR2009/002580
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English (en)
Korean (ko)
Inventor
이재두
박종식
김정호
김상진
Original Assignee
주식회사 감마누
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 주식회사 감마누 filed Critical 주식회사 감마누
Publication of WO2010067930A1 publication Critical patent/WO2010067930A1/fr

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    • 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
    • H01Q5/392—Combination of fed elements with parasitic elements the parasitic elements having dual-band or multi-band characteristics
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/005—Patch antenna using one or more coplanar parasitic elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays
    • H01Q21/062—Two dimensional planar arrays using dipole aerials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • 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
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines

Definitions

  • the present invention relates to a small dual band radiation element, and more particularly, by placing a dipole antenna on the front and rear sides of a radiation substrate and by placing a parasitic element coupled to the rear dipole antenna on the side of the radiation substrate.
  • the present invention relates to a dual band radiating element capable of satisfying characteristics of both desired frequency bands while miniaturizing its size compared to a dual band antenna.
  • DMB Digital Multimedia Broadcasting
  • a high frequency antenna and a low frequency antenna are mainly designed, respectively, and then a band combiner is used to bundle two antennas into one.
  • a band combiner is used to bundle two antennas into one.
  • the dual band antenna is implemented as a sector as described above, it is difficult to obtain satisfactory characteristics at both frequencies because the array spacing varies according to two frequencies.
  • the present invention has been made to solve the problems described above, and an object of the present invention is to provide a dual-band radiating element capable of satisfying the characteristics of both desired frequency bands while miniaturizing the size of the conventional dual-band antenna. It is to provide.
  • Small dual-band radiating element of the present invention for achieving the above object is provided on the front surface of the radiation substrate, the front high frequency antenna for radiating the signal of the high frequency band fed through the feed cable;
  • a rear low frequency antenna provided on a rear surface of the radiation substrate and configured to radiate a low frequency band signal fed through a coupling with the front high frequency antenna; It is formed in a '-' shape so as to overlap a portion of the upper surface of the radiation substrate spaced apart from the radiation substrate and disposed on both sides of the radiation substrate, the coupling of the rear low frequency antenna through the coupling with the rear low frequency antenna
  • a first low frequency parasitic element adjusting a resonance frequency
  • a second low frequency parasitic element spaced apart from the first low frequency parasitic element by a predetermined distance and extending a frequency bandwidth of the rear low frequency antenna;
  • a reflector provided on a bottom surface of the radiation substrate and reflecting a signal radiated from the high frequency antenna and the low frequency antenna.
  • the present invention can transmit both high-frequency band and low-frequency band signals through one antenna, and has the advantage of satisfying both characteristics of both frequency bands.
  • the size of the conventional dual-band antenna can be significantly reduced, there is an advantage that can greatly reduce the restrictions on installation and operation.
  • FIG. 1 is a perspective view showing the overall configuration of a small dual-band radiation device according to the present invention.
  • FIG. 2 is a perspective view in which the radiation substrate is not illustrated in order to indicate an arrangement state of a front high frequency antenna and a rear low frequency antenna in the small dual band radiation element of FIG. 1.
  • FIG 3 is a view showing a specific configuration of the front high frequency antenna 100 of the small dual band radiation element according to the embodiment of the present invention.
  • FIG 4 is a view showing a specific configuration of the rear low-frequency antenna 200 of the small dual-band radiating element according to an embodiment of the present invention.
  • FIG. 5 is a diagram illustrating a current distribution of a front high frequency antenna of a small dual band radiating element according to an exemplary embodiment of the present invention.
  • FIG. 6 is a diagram illustrating a current distribution of a rear low frequency antenna of a small dual band radiating element according to an exemplary embodiment of the present invention.
  • FIG. 7 is a graph showing the S11 value of the dual-band radiating element according to an embodiment of the present invention.
  • first low frequency parasitic element 400 second low frequency parasitic element
  • feeder 120a, 120b parallel feed line portion
  • balun hole 114 printed circuit pattern
  • first coupling part 220a, 220b rear dipole antenna
  • 230a, 230b second coupling part 240, 250: antenna extension part
  • the small dual band radiation device of the present invention includes a front high frequency antenna provided on a front surface of a radiation substrate and radiating a signal of a high frequency band fed through a feed cable; A rear low frequency antenna provided on a rear surface of the radiation substrate and configured to radiate a low frequency band signal fed through a coupling with the front high frequency antenna; It is formed in a '-' shape so as to overlap a portion of the upper surface of the radiation substrate spaced apart from the radiation substrate and disposed on both sides of the radiation substrate, the coupling of the rear low frequency antenna through the coupling with the rear low frequency antenna A first low frequency parasitic element adjusting a resonance frequency; A second low frequency parasitic element spaced apart from the first low frequency parasitic element by a predetermined distance and extending a frequency bandwidth of the rear low frequency antenna; And a reflector provided on a bottom surface of the radiation substrate and reflecting a signal radiated from the high frequency antenna and the low frequency antenna.
  • the front high frequency antenna a power supply unit for receiving a signal of a high frequency band from the power supply cable;
  • a parallel feed line unit for transmitting a signal of a high frequency band fed to the feed unit to a front dipole antenna;
  • a front dipole antenna which radiates the high frequency band signal transmitted from the parallel feed line unit to free space; It is preferably configured to include.
  • the power feeding unit may include: a core wire hole through which a core wire (+) of the feed cable is connected through the radiation board from a rear surface of the radiation board; A ground via hole connected through the radiation substrate and electrically connected to a ground line ( ⁇ ) of the feed cable; And a balun hole in which a balun cable, which is paired with the feed cable and serves as a balun, is inserted and connected.
  • the core wire hole and the balun hole may be electrically connected through a printed circuit pattern.
  • the front radio frequency antenna may further include a front parasitic element arranged in parallel with the front dipole antenna on a front surface of the radiation substrate to extend a frequency bandwidth of the front dipole antenna.
  • the rear low frequency antenna may include a coupling unit configured to receive a low frequency band signal through a coupling with the front high frequency antenna; A rear dipole antenna having one side connected to the coupling part and radiating a low frequency band signal fed from the coupling part to free space; An antenna extension unit arranged perpendicular to the longitudinal direction of the rear dipole antenna and having one side connected to the other side of the rear dipole antenna; And a second coupling part positioned at a portion where the rear dipole antenna and the antenna extension part are connected and coupled to the first low frequency parasitic element.
  • the rear low frequency antenna, the rear side of the radiation substrate is arranged in parallel with the antenna extension, it is preferable to further include a rear parasitic element for extending the frequency bandwidth of the rear dipole antenna.
  • the first low frequency parasitic elements are preferably arranged such that the plane parallel to the radiation substrate is located at two center portions of the four corners of the radiation substrate on which the front dipole antenna is not formed.
  • the second low frequency parasitic elements are spaced apart from the first low frequency parasitic elements by a predetermined distance and are disposed on the rear surface of the first low frequency parasitic elements based on the radiation substrate. desirable.
  • FIG. 1 is a perspective view showing the overall configuration of a small dual-band radiating element according to the present invention
  • Figure 2 is a radiation substrate for indicating the arrangement of the front high frequency antenna and the rear low frequency antenna in the small dual band radiating element shown in FIG. A perspective view is omitted.
  • the small dual-band radiating element includes a front high frequency antenna 100, a rear low frequency antenna 200, a first low frequency parasitic element 300, a second low frequency parasitic element 400, and a reflecting plate 500. It is configured by.
  • the front high frequency antenna 100 is provided on the front surface of the radiation substrate, and radiates a signal of a high frequency band fed through a feed cable.
  • the feed cable receives feed signals of (+) current and ( ⁇ ) current from the outside to feed the front high frequency antenna 100 and the rear low frequency antenna 200.
  • the front high frequency antenna 100 is directly connected to a feed cable to receive a signal
  • the rear low frequency antenna 200 receives a feed signal through a coupling in a portion overlapping with the front high frequency antenna 100.
  • the feed cable may be implemented as, for example, a coaxial cable for power transmission or signal transmission, and includes an inner conductor (core wire) serving as a signal line and an outer conductor serving as a grounding wire.
  • the rear low frequency antenna 200 is provided on the rear surface of the radiation substrate and radiates a low frequency band signal fed through the coupling with the front high frequency antenna.
  • the rear low frequency antenna 200 rotates the front high frequency antenna 100 by 90 degrees.
  • the first low frequency parasitic elements 300a and 300b are formed in a '-' shape so as to overlap a portion of an upper surface of the radiation substrate by being spaced apart from the radiation substrate at a predetermined interval and disposed on both sides of the radiation substrate, and the rear low frequency Coupling with the antenna adjusts the resonance frequency of the rear low frequency antenna.
  • the first low frequency parasitic elements (300a, 300b), of the four corners of the rectangular radiation substrate, of the 'A' shape at the center of the two corners, the front high frequency antenna 100 is not formed
  • the upper surface ie, the surface parallel to the radiation substrate
  • the first low frequency parasitic elements 300a and 300b are disposed on the rear surface of the radiation substrate.
  • the radiation substrate are spaced apart from each other by a predetermined distance therebetween, and coupling occurs with the rear low frequency antenna 200 at the overlapping portion, so that the rear low frequency antenna 200 can copy a signal in a low frequency band.
  • the second low frequency parasitic elements 400a and 400b are disposed on the rear surface of the first low frequency parasitic elements 300a and 300b when the second low frequency parasitic elements 300a and 300b are spaced apart from the first low frequency parasitic elements 300a and 300b by reference to the radiation substrate. It serves to extend the frequency bandwidth of the rear low frequency antenna.
  • the reflector 500 is provided on the bottom surface of the radiation substrate and reflects the signal radiated from the high frequency antenna and the low frequency antenna.
  • FIG 3 is a view showing a specific configuration of the front high frequency antenna 100 of the small dual band radiation element according to the embodiment of the present invention.
  • the front high frequency antenna 100 includes a feed unit 110, parallel feed line units 120a and 120b, front dipole antennas 130 and 140, and front parasitic elements 150a and 150b. It is composed.
  • the power feeding unit 110 receives a signal of a high frequency band from the power feeding cable.
  • the power supply unit 110 includes a core wire hole 111 through which a core wire (+) of the feed cable is connected through the radiation board from the rear surface of the radiation board, and the A ground via hole 112 connected through the radiation substrate and electrically connected to a ground line (-) of the feed cable, and a balun hole 113 into which a balun cable serving as a balun is inserted into and connected to the feed cable;
  • the core wire hole and the balloon hole are configured to be electrically connected to each other through the printed circuit pattern 114. According to such a configuration, a positive current is applied to the core wire hole 111 from the feed cable and a negative current is applied to the ground via hole 112.
  • balun (balance / unbalance) is to make resonance by matching a difference between a positive feed signal and a negative feed signal of a feed cable, which is a known technique in the antenna field.
  • the parallel feed line units 120a and 120b transmit a high frequency band signal fed to the feed unit 110 to the front dipole antenna.
  • the parallel feed line portions 120a and 12b are configured such that two feed lines for transferring positive and negative currents from the feed portion 110 to the front dipole antennas 130 and 140 are arranged in parallel. do.
  • the parallel feed line units 120a and 120b match the impedance between the feed unit 110 and the front dipole antennas 130 and 140. That is, although the impedance of the power supply unit 110 and the impedance between the front dipole antennas 130 and 140 are different, the feed signal passes through the parallel feed line units 120a and 120b in the power supply unit 110 (the front dipole antenna ( 130 and 140, the parallel feed line units 120a and 120b convert the impedance of the feed unit 110 into the impedances of the front dipole antennas 130 and 140.
  • the front dipole antennas 130 and 140 copy the signal of the high frequency band transmitted from the parallel feed line unit to free space.
  • the front dipole antennas 130 and 140 may include a front first dipole antenna 130 and a front second dipole antenna 140 configured up and down symmetrically with respect to the power feeding unit 110.
  • the front first dipole antenna 130 is located at a quarter wavelength away from the power supply unit 110 in the upward direction
  • the front second dipole antenna 140 is 1 / downward in the downward direction from the power supply unit 110. 4 wavelengths away.
  • the antenna component 130a receiving positive (+) current from the front first dipole antenna 130 and the antenna component 130b receiving negative ( ⁇ ) current are bilaterally symmetric, and the front second dipole antenna ( At 140, the antenna component 140a to which the positive current is applied and the antenna component 140b to which the negative current is applied are symmetrical.
  • the front high frequency antenna 100 further includes front parasitic elements 150a and 150b arranged in parallel with the front first dipole antenna 130 and the front second dipole antenna 140 on the front surface of the radiation substrate. can do.
  • the front parasitic elements 150a and 150b have currents having the same direction as that of the front first dipole antenna 130 and the front second dipole antenna 140, and thus, the front first dipole antenna 140 and It serves to extend the frequency bandwidth of the front second dipole antenna 140.
  • FIG 4 is a view showing a specific configuration of the rear low-frequency antenna 200 of the small dual-band radiating element according to an embodiment of the present invention.
  • the rear low frequency antenna 200 includes a first coupling part 210, rear dipole antennas 220a and 220b, second coupling parts 230a and 230b, antenna extension parts 240 and 250, It is configured to include the rear parasitic elements 260a and 260b, and the front high frequency antenna 100 is rotated 90 degrees.
  • the first coupling unit 210 feeds the low frequency band signal to the rear low frequency antenna 200 through the coupling with the front high frequency antenna 100.
  • the power feeding to the rear low frequency antenna 200 is performed through the coupling with the front high frequency antenna 100, rather than the direct power feeding method by the cable.
  • the power feeding unit 110 of the front high frequency antenna 100 positioned on the front surface corresponding to the first coupling unit 210 is coupled to each other based on the radiation substrate, thereby feeding power to the rear low frequency antenna 200. .
  • One side of the rear dipole antennas 220a and 220b is connected to the first coupling unit 210 to copy the low frequency band signal fed from the coupling unit to free space.
  • a portion corresponding to the rear dipole antennas 220a and 220b forms a parallel feed line portion 120a and 120b, but the rear low frequency antenna 200 is not a feed line. The difference is that it functions as a dipole antenna.
  • the second coupling units 230a and 230b are portions in which coupling occurs between the first low frequency parasitic elements 300a and 300b and the rear low frequency antenna 200.
  • the first low frequency parasitic elements 300a and 300b have front portions corresponding to the second coupling portions 230a and 230b on the rear surface of the radiation substrate. It is placed at a certain distance apart. Accordingly, coupling occurs with the first low frequency parasitic elements 300a and 300b in a region of the second coupling units 230a and 230b of the rear low frequency antenna 200, thereby causing low frequency through the rear dipole antennas 220a and 220b.
  • the signal in the band is copied.
  • the antenna extensions 240 and 250 correspond to the front dipole antennas 130 and 140 of the front high frequency antenna 100, and are arranged perpendicular to the longitudinal direction of the rear dipole antennas 220a and 220b as shown.
  • the second coupling parts 230a and 230b may be connected to the other side of the rear dipole antennas 220a and 220b.
  • the lengths of the rear dipole antennas 220a and 220b can be reduced, thereby minimizing the overall size of the small dual band radiating element according to the present invention.
  • the first circular circuit pattern 115 surrounding the balloon hole 113 in a circle is spaced apart from the rear dipole antenna 220a by a predetermined distance.
  • the second circular circuit pattern 116 including one or more ground via holes 112 and being surrounded by a circle at a predetermined interval with respect to the core wire 111 may also be spaced apart from the rear dipole antenna 220b at a predetermined interval. It is.
  • the rear low frequency antenna 200 is arranged in parallel with the antenna extension parts 240 and 250 on the rear side of the radiation substrate like the front high frequency antenna 100 to extend the frequency bandwidth of the rear dipole antennas 220a and 220b.
  • the parasitic elements 260a and 260b may be further included.
  • FIG. 5 is a diagram illustrating a current distribution of a front high frequency antenna of a small dual band radiating element according to an exemplary embodiment of the present invention.
  • the front high frequency antenna 100 is fed through a cable in the feed section 110 of the antenna center portion, the fed signal is the front dipole antenna 130 through the parallel feed line (120a, 120b) , 140) and copied into free space.
  • a current flows in the front portion of the high frequency antenna 100 as shown, but no coupling occurs in the rear surface, and thus no current flows.
  • FIG. 6 is a diagram illustrating a current distribution of a rear low frequency antenna of a small dual band radiating element according to an exemplary embodiment of the present invention.
  • the rear low frequency antenna feeds a low frequency signal by coupling occurring in the first coupling part 210 overlapping the front high frequency antenna, and the first low frequency parasitic element (2) in the second coupling parts 230a and 230b. It is coupled to the 300a, 300b to operate as a low-frequency antenna, the low-frequency signal is radiated to the free space through the rear dipole antenna (220a, 220b).
  • FIG. 7 is a graph showing the S11 value of the dual-band radiating element according to an embodiment of the present invention.

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Abstract

La présente invention concerne un élément de rayonnement bi-bande qui présente une plus petite dimension comparée aux antennes bi-bande classiques, et satisfait les caractéristiques de deux bandes de fréquences. L'élément de rayonnement selon la présente invention comporte : une antenne haute fréquence avant qui est disposée sur la face avant d'un substrat de rayonnement, et qui rayonne des signaux de bande de haute fréquence alimentés par un câble d'alimentation ; une antenne basse fréquence arrière qui est disposée sur la face arrière du substrat de rayonnement, et qui rayonne des signaux de bande de basse fréquence alimentés par le couplage avec l'antenne haute fréquence avant ; un premier élément passif de basse fréquence qui est en configuré en une forme en L inversé, espacé du substrat de rayonnement, chevauchant une partie de la surface supérieure du substrat de rayonnement, et disposé sur les deux côtés du substrat de rayonnement, et qui commande la fréquence de résonance avec l'antenne basse fréquence arrière à travers le couplage avec l'antenne basse fréquence arrière ; et un second élément passif de basse fréquence espacé du premier élément passif de basse fréquence pour étendre la largeur de bande de l'antenne arrière de basse fréquence ; et un réflecteur disposé sur la surface inférieure du substrat de rayonnement pour réfléchir des signaux rayonnés par l'antenne haute fréquence et par l'antenne basse fréquence.
PCT/KR2009/002580 2008-12-08 2009-05-15 Élément de rayonnement bi-bande de taille réduite WO2010067930A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020080123878A KR100911438B1 (ko) 2008-12-08 2008-12-08 소형 이중대역 복사 소자
KR10-2008-0123878 2008-12-08

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WO2010067930A1 true WO2010067930A1 (fr) 2010-06-17

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PCT/KR2009/002580 WO2010067930A1 (fr) 2008-12-08 2009-05-15 Élément de rayonnement bi-bande de taille réduite

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107248613A (zh) * 2017-06-19 2017-10-13 深圳市维力谷无线技术股份有限公司 一种高增益双频天线单元
CN110729564A (zh) * 2019-10-17 2020-01-24 广东博纬通信科技有限公司 一种寄生片及多频天线

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KR100958846B1 (ko) * 2009-08-28 2010-05-19 주식회사 감마누 안테나 기생 소자 및 다중 대역 옴니 안테나
CN106654603B (zh) * 2016-12-28 2023-12-29 深圳国人无线通信有限公司 一种三频超宽带基站天线
TWI668917B (zh) * 2018-03-26 2019-08-11 和碩聯合科技股份有限公司 雙頻天線模組
CN110718769A (zh) * 2018-07-13 2020-01-21 杭州海康威视数字技术股份有限公司 双频段定向天线
CN111478037A (zh) * 2020-05-25 2020-07-31 常熟正昊电子科技有限公司 一种s波段小型化超宽带全向辐射垂直极化天线

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US6400332B1 (en) * 2001-01-03 2002-06-04 Hon Hai Precision Ind. Co., Ltd. PCB dipole antenna
JP2003051708A (ja) * 2001-08-06 2003-02-21 Nippon Dengyo Kosaku Co Ltd アンテナ
JP2005223836A (ja) * 2004-02-09 2005-08-18 Hitachi Cable Ltd スロット給電型アンテナ
KR100870725B1 (ko) * 2008-03-06 2008-11-27 주식회사 감마누 기판형 광대역 이중편파 다이폴 안테나

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6400332B1 (en) * 2001-01-03 2002-06-04 Hon Hai Precision Ind. Co., Ltd. PCB dipole antenna
JP2003051708A (ja) * 2001-08-06 2003-02-21 Nippon Dengyo Kosaku Co Ltd アンテナ
JP2005223836A (ja) * 2004-02-09 2005-08-18 Hitachi Cable Ltd スロット給電型アンテナ
KR100870725B1 (ko) * 2008-03-06 2008-11-27 주식회사 감마누 기판형 광대역 이중편파 다이폴 안테나

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107248613A (zh) * 2017-06-19 2017-10-13 深圳市维力谷无线技术股份有限公司 一种高增益双频天线单元
CN110729564A (zh) * 2019-10-17 2020-01-24 广东博纬通信科技有限公司 一种寄生片及多频天线

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