WO2010071304A2 - Diviseur de puissance utilisant un couplage - Google Patents

Diviseur de puissance utilisant un couplage Download PDF

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Publication number
WO2010071304A2
WO2010071304A2 PCT/KR2009/006770 KR2009006770W WO2010071304A2 WO 2010071304 A2 WO2010071304 A2 WO 2010071304A2 KR 2009006770 W KR2009006770 W KR 2009006770W WO 2010071304 A2 WO2010071304 A2 WO 2010071304A2
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WO
WIPO (PCT)
Prior art keywords
transmission line
groove
coupling
dielectric
power divider
Prior art date
Application number
PCT/KR2009/006770
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English (en)
Korean (ko)
Other versions
WO2010071304A3 (fr
Inventor
김충열
이공
Original Assignee
주식회사 이공
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Application filed by 주식회사 이공 filed Critical 주식회사 이공
Publication of WO2010071304A2 publication Critical patent/WO2010071304A2/fr
Publication of WO2010071304A3 publication Critical patent/WO2010071304A3/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/04—Coupling devices of the waveguide type with variable factor of coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/12—Coupling devices having more than two ports
    • H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
    • H01P5/18—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/12—Coupling devices having more than two ports

Definitions

  • the present invention relates to a power divider, and more particularly, to a power divider used in a base station, a repeater, a switch, and the like of a mobile communication system.
  • a power divider is a circuit that divides power of an input frequency signal by a predetermined ratio into an output port in a radio frequency (RF) circuit, and distributes power at a desired rate without losing power, and also isolates between output ports. device to prevent changes in circuit characteristics caused by mutual influence of two ports.
  • the power divider can be used as a power synthesizer by switching the input and output ports.
  • the power divider is used in a mobile communication switch, a base station, a repeater, and the like to distribute high frequency signals. At this time, the power divider is divided into various types of power dividers according to the distribution ratio, and according to the frequency band used is divided into CDMA, PCS, IMT-2000, 25GHz or more for satellite communication.
  • Wilkinson power dividers have been widely used as power dividers.
  • the Wilkinson power divider is based on a design having a frequency band desired by a designer using a transmission line having a right-handed (RH) characteristic, and is a microwave device used for the sum or distribution of two signals.
  • RH right-handed
  • FIG. 10 is a view schematically illustrating a conventional Wilkinson power divider used in the related art.
  • the Wilkinson power divider 900 includes an input terminal 901 and two output terminals 902 and 903, and the power input to the input terminal 901 has the same ratio as the output terminal 902. 903).
  • the characteristic impedance of transmission lines 904 and 905 generally has 70.7O.
  • the length of the transmission line 104, 105 is, if the wavelength of the signal is It is decided.
  • resistor 106 has 100O.
  • FIG. 11 is a plan view of a conventional power divider implemented on a substrate according to the Wilkinson power divider circuit as shown in FIG. 10.
  • the conventional power divider as shown in FIG. 11 is a method in which a transmission line made of a metal pattern is coupled onto a substrate.
  • Such a conventional power divider implements a divider by coupling a copper plate to a dielectric substrate, and there is a problem in that signal distortion occurs due to deformation of the divider structure due to a difference in thermal expansion coefficient between the substrate and the transmission line.
  • the ground is coupled to the bottom of the substrate to transmit a frequency signal in the form of a microstrip, which causes a problem in that the signal is distorted due to a coupling phenomenon between adjacent transmission lines and the attenuation of the signal is large.
  • the conventional Wilkinson-type power divider has a problem that it is difficult to implement the broadband characteristics and is vulnerable to PIMD because the transmission line is coupled with a passive element such as a resistor.
  • Another object of the present invention is to propose a power divider that can minimize the deterioration of characteristics due to heat.
  • Another object of the present invention is to propose a power divider suitable for broadband characteristics.
  • Another object of the present invention is to propose a power divider that can minimize the generation of PIMD.
  • the input connector A first output connector and a second output connector; housing; And a cover, wherein the housing includes a first transmission line electrically coupled with the input connector and a second output connector, and a second transmission line electrically coupled with the second output connector.
  • the RF signal applied to the first transmission line via the power splitter is provided using a coupling that is distributed to the second transmission line by the coupling.
  • a lower portion of the housing is formed with a first transmission line groove for placing at least a portion of the first transmission line and a second transmission line groove for placing at least a portion of the second transmission line.
  • a dielectric groove is formed in the lower portion of the housing for the first dielectric.
  • the first dielectric may be made of polyetheretherketone (PEEK) material.
  • PEEK polyetheretherketone
  • a portion of the first transmission line and the second transmission line are disposed above the first dielectric and spaced apart from the first transmission line and the second transmission line by a predetermined distance.
  • One end of the second transmission line is terminated.
  • Coupling parts of the first transmission line placed on the first dielectric is a plurality, multi-stage structure, the length of each coupling part It can be set to.
  • the first transmission line and the second transmission line are spaced apart from the bottom of the first transmission line groove and the second transmission line groove by a predetermined distance, and the bottom of the first transmission line groove and the second transmission line groove
  • a plurality of support members are coupled to support the first transmission line and the second transmission line to be spaced apart by a predetermined distance.
  • a protruding jaw having a higher height is formed along the sides of the first transmission line groove, the second transmission line groove and the dielectric groove, and the protruding jaw is in contact with the cover.
  • a second dielectric is stacked on a portion of the first transmission line and the second transmission line that is placed on the first dielectric.
  • the input connector A first output connector and a second output connector; housing; And a cover, wherein the housing includes a first transmission line electrically coupled to the input connector and a second output connector, and a second transmission line electrically coupled to the second output connector.
  • a power splitter is provided using a coupling in which a first transmission line groove for placing at least a portion of the first transmission line and a second transmission line groove for placing at least a portion of the second transmission line are formed.
  • the present invention by implementing a power divider using a coupling without using the Wilkinson method, it is possible to minimize the deterioration of characteristics due to heat, to be suitable for broadband characteristics, and to reduce the influence of PIMD.
  • FIG. 1 is a perspective view of a power divider using a coupling according to an embodiment of the present invention.
  • FIG. 2 is a plan view of a power divider according to an embodiment of the present invention.
  • FIG. 3 is a diagram illustrating an internal perspective view of a state in which a transmission line and a dielectric are excluded in a power divider using a coupling according to an embodiment of the present invention.
  • FIG. 4 is a plan view illustrating an interior of a state in which a transmission line and a dielectric are excluded in a power divider using a coupling according to an embodiment of the present invention.
  • FIG. 5 is a plan view illustrating an interior of the transmission line and the dielectric in the drawings of FIGS. 3 and 4.
  • FIG. 6 is an exploded perspective view of a power member using a coupling according to an embodiment of the present invention.
  • FIG. 7 is a cross-sectional view in the x direction of the second transmission line 402 placed in the second transmission line groove 300 in FIG. 6.
  • FIG. 8 is a cross-sectional view in the y-direction of the second transmission line 402 placed in the second transmission line groove 300 in FIG. 6.
  • FIG. 9 is an enlarged view of an area where coupling occurs between a first transmission line and a second transmission line in a frequency divider according to an embodiment of the present invention.
  • FIG. 10 is a schematic illustration of a conventional Wilkinson power divider used in the prior art.
  • FIG. 11 shows a top view of a conventional power divider implemented on a substrate in accordance with a Wilkinson power divider circuit such as FIG. 9;
  • FIG. 1 is a view showing a perspective view of a power divider using a coupling according to an embodiment of the present invention
  • Figure 2 is a plan view showing a power divider according to an embodiment of the present invention.
  • a power divider using a coupling includes an input connector 100, a first output connector 102, a second output connector 104, and a housing 106. And a cover 108.
  • the housing 106 functions as the body of the power divider, and inside the housing 106 elements are formed or coupled for power distribution.
  • the housing is made of a conductive material and the inside of the housing is preferably silver plated to reduce loss.
  • the housing may form a base body of aluminum and silver plating may be performed thereon.
  • silver plating may be performed in addition to silver plating.
  • the cover 108 is coupled to the upper portion of the housing 106.
  • the cover 108 is also made of a conductive material, and may be preferably silver plated to reduce loss. According to an embodiment of the present invention, the cover 108 may be coupled to the housing 106 by screw coupling, but is not limited thereto, and various coupling schemes may be used. When the housing 106 and the cover 108 are coupled by screwing, a plurality of screw holes (not shown) may be formed in the cover 108.
  • An RF signal is applied to the input connector 100.
  • the RF signal input through the input connector 100 is distributed by internal elements formed or coupled inside the housing, and the distributed signal is output through the first output connector 102 and the second output connector 104. .
  • FIG. 3 is a diagram illustrating an internal perspective view of a state in which a transmission line and a dielectric are excluded in a power divider using a coupling according to an embodiment of the present invention
  • FIG. 4 is a coupling diagram according to an embodiment of the present invention.
  • FIG. 5 is a diagram illustrating an internal plan view of a state in which a transmission line and a dielectric are excluded in a used power divider
  • FIG. 5 is a diagram illustrating an interior plan view of a state in which transmission lines and a dielectric are combined in FIGS. 3 and 4.
  • 6 is an exploded perspective view of a power member using a coupling according to an embodiment of the present invention.
  • a plurality of grooves 300, 302, 304, 306, and 308 are formed in the bottom of the housing 106.
  • the grooves 300 and 302 are second transmission line grooves formed for the second transmission line, and the grooves 304 and 306 are first transmission line grooves formed for the first transmission line. .
  • First transmission line grooves 304 and 306 are disposed with a first transmission line, which will be described later, and second transmission line grooves 300 and 302, with a second transmission line, which will be described later.
  • a transmission line is patterned on the substrate, but in the present invention, the transmission line is placed in the groove.
  • the rectangular groove 308 is a dielectric groove for placing the first dielectric.
  • a dielectric having a predetermined dielectric constant is placed in the dielectric groove 308.
  • the dielectric may be made of a polyetheretherketone (PEEK) material.
  • the depth of the dielectric groove 308 is preferably deeper than the transmission line grooves 300, 302, 304, and 306, but is not limited thereto.
  • the dielectric groove 308 may not have a constant depth, but a deeper groove may be formed in the center portion, in order to compensate for broadband characteristics.
  • protruding jaws 350 protruding at a predetermined height may be formed in the side portions of the dielectric grooves 308 and the transmission line grooves 300, 302, 304, and 306.
  • the protruding jaw 350 may have a slightly higher height than the portion where the groove is not formed, and the protruding jaw 350 is in electrical contact with the cover 108.
  • the protruding jaw 350 is formed together with the cover 108 and the groove to electromagnetically shield the transmission line, which will be described later, and the shielding structure will be described with reference to a separate drawing.
  • FIGS. 3 and 4 a power divider in which a transmission line and a dielectric are combined inside a housing illustrated in FIGS. 3 and 4 will be described.
  • the first transmission line 400, the second transmission line 402, and the first dielectric 404 are additionally provided inside the housing.
  • One end of the first transmission line 400 is electrically connected to the center conductor of the input connector 100, and the other end of the first transmission line 400 is electrically connected to the center conductor of the second output connector 104.
  • a portion of the first transmission line 400 is placed in the first transmission line grooves 304, 306, and the remaining portion of the second transmission line is placed on the first dielectric 404.
  • one end of the second transmission line is terminated 410, and the other end of the second transmission line is electrically connected to the center conductor of the first output connector 102.
  • a portion of the second transmission line lies in the second transmission line grooves 300, 302 and the remaining portion of the second transmission line lies on the first dielectric 404.
  • the first transmission line 400 and the second transmission line 402 are not electrically coupled with the bottom of the groove, but are floating at a predetermined distance from the bottom of the groove. A detailed structure will be described with reference to FIGS. 7 and 8 as follows.
  • FIG. 7 is a cross-sectional view in the x-direction of the second transmission line 402 placed in the second transmission line groove 300 in FIG. 6, and FIG. 8 is a second transmission line groove 300 in FIG. 6. Is a cross-sectional view in the y direction with respect to the second transmission line 402 to be placed).
  • the bottom portion of the second transmission line groove 400 is positioned so that the second transmission line 402 is positioned above the bottom of the groove at a predetermined interval without being in electrical contact with the bottom of the groove.
  • a plurality of dielectric support members 500 are installed therein. The number of dielectric support members 500 may be appropriately set to stably support the second transmission line 402.
  • the dielectric support member 500 may be made of a dielectric made of Teflon material, but is not limited thereto.
  • the dielectric support member 500 may be coupled to the bottom of the groove in various ways. For example, bonding or bolting may be used.
  • a cover protrusion jaw 700 corresponding to the protrusion jaw 300 is formed at a lower portion of the cover, so that the second transmission line 402 protrudes from both side portions of the groove and both sides of the groove. 4 and 4 are surrounded by a conductor by the protruding jaw 700 of the cover 108 and installed inside the distributor in an electromagnetically shielded state.
  • the second transmission line placed in the second transmission line groove has been described as an example.
  • the structure in which the four surfaces are shielded is provided as a first transmission line diagram placed in the first transmission line groove. same.
  • transmission lines have typically been patterned on dielectric substrates to carry signals in the form of microstrips.
  • a conventional structure has a lot of losses due to the general characteristics of the microstrip line, and furthermore, there is a problem that the signal is distorted by the coupling between transmission lines, and there is also a problem that is vulnerable to heat.
  • the signal is transmitted with the transmission line shielded, and the transmission scheme is similar to the strip line.
  • the structure in which the transmission line is positioned inside the groove is not a structure in which the transmission line is positioned on the dielectric substrate as in the prior art, performance degradation due to heat does not occur.
  • the attenuation and distortion of the signal can be relatively reduced.
  • a first dielectric 404 is placed in the dielectric groove 308.
  • a portion of the first transmission line 400 and the second transmission line 402 is disposed on the first dielectric 404.
  • a coupling phenomenon occurs between the first transmission line 400 and the second transmission line 402 placed on the first dielectric 404, and the signal distribution is performed by the coupling phenomenon.
  • FIG. 9 is a diagram illustrating an enlarged view and signal flow of an area where coupling occurs between a first transmission line and a second transmission line in a frequency divider according to an embodiment of the present invention. With reference to FIG. 9, the power distribution by coupling is demonstrated.
  • the first transmission line 400 and the second transmission line are disposed at a predetermined interval on the dielectric 404.
  • the RF signal applied from the input connector 100 is transmitted in the direction of a arrow along the first transmission line 400 electrically connected to the input connector 100.
  • the first transmission line 400 placed on the dielectric has a three-stage structure including a first coupling part 400a, a second coupling part 400b, and a third coupling part 400c, and a second transmission line.
  • Reference numeral 402 also corresponds to a three-stage structure consisting of the first coupling part 402a, the second coupling part 402b, and the third coupling part 402c.
  • the first coupling part 400a of the first transmission line 400, the second coupling part 400b, and the third coupling part 400c are coupled parts of the second transmission line 402 which are placed adjacent to each other.
  • the first coupling part 400a, the second coupling part 400b and the third coupling part 400c of the first transmission line are the first coupling part 402a and the second coupling of the second transmission line. Independently of the part 402b and the third coupling part 402c, respectively. Acts as a coupler, and therefore, the length of the first coupling part 400a, the second coupling part 400b and the third coupling part 400c Is set to.
  • the first coupling between the first coupling part 400a of the first transmission line 400 and the first coupling part 402a of the second transmission line 402, the first transmission line 400 A second coupling between the second coupling part 400b and the second coupling part 402b of the second transmission line 402 and the third coupling part 400c and the first coupling line 400c of the first transmission line 400.
  • a third coupling phenomenon occurs between the third coupling part 402c of the second transmission line 402, and the RF signal is induced in the second transmission line 402 by the coupling phenomenon.
  • the RF signal induced on the second transmission line 402 proceeds in the direction of the b arrow because one end of the second transmission line is terminated.
  • a part of the RF signal transmitted through the first transmission line 400 is coupled to the second transmission line, and the power of the signal applied from the input connector 100 by the coupling phenomenon is the second transmission line 402. ) Is distributed.
  • the RF signal transmitted through the first transmission line 400 is output through the second output connector 104, and the RF signal transmitted through the second transmission line 402 is output through the first output connector 102. do.
  • the adjustment of the power distributed from the first transmission line 400 to the second transmission line 402 may be achieved by adjusting the coupling coefficient between the first transmission line 400 and the second transmission line 402.
  • the coupling coefficient can be adjusted while varying the spacing between the first transmission line 400 and the second transmission line 402 and the dielectric constant of the dielectric 404. That is, the dielectric 404 accommodated in the dielectric groove 308 is for controlling the coupling amount. For example, when the dielectric constant suitable for coupling is the dielectric constant of free space, the first dielectric may not be provided.
  • FIG. 5 and 9 illustrate a three-stage structure in which the first transmission line 400 is composed of three coupling parts 400a, 400b, and 400c.
  • Such a three-stage structure improves broadband characteristics to provide a wider bandwidth. This is to enable the transmission of a signal.
  • the coupling part is not limited to the three-stage structure as shown in FIGS. 5 and 9, and it will be apparent to those skilled in the art that only one coupling part may be provided. In other words, when the broadband characteristics are not largely required, only one coupling part is provided in the first transmission line, so that signal distribution by coupling is included in the scope of the present invention.
  • the multi-stage structure is not necessarily limited to the three-stage structure, it will also be apparent to those skilled in the art that it can be implemented in various numbers of coupling parts.
  • the coupling coefficients of the first coupling and the third coupling are set identically, and the coupling coefficients of the second coupling are differently set.
  • the power divider of the present invention which implements a coupler structure and distributes power, does not use a T-Junction structure like a conventional Wilkinson power divider and does not require a resistor that is a passive element for power distribution adjustment. Accordingly, there is an advantage that signal distortion caused by PIMD, which is the biggest issue in current RF equipment, can be minimized compared to the Wilkinson power divider.
  • a second dielectric 450 having the same size as the first dielectric is stacked on the first transmission line and the second transmission line corresponding to the first dielectric 404.

Abstract

La présente invention concerne un diviseur de puissance utilisant un couplage. Le diviseur de puissance comprend: un connecteur d'entrée, un premier connecteur de sortie et un second connecteur de sortie, un boîtier et un couvercle. Le boîtier abrite une première ligne de transmission électriquement couplée au connecteur d'entrée et au second connecteur de sortie, et une seconde ligne de transmission électriquement couplée au second connecteur de sortie. Le signal RF appliqué à la première ligne de transmission par le connecteur d'entrée est distribué à la seconde ligne de transmission par un couplage. Le diviseur de puissance selon la présente invention n'utilise pas un système de diviseur de puissance Wilkinson mais utilise un couplage, ce qui permet ainsi de réduire la dégradation de ses caractéristiques provoquée par la chaleur, ce diviseur de puissance étant approprié pour les applications à large bande et réduisant les influences de PIMD.
PCT/KR2009/006770 2008-12-15 2009-11-27 Diviseur de puissance utilisant un couplage WO2010071304A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2008-0127508 2008-12-15
KR1020080127508A KR100897864B1 (ko) 2008-12-15 2008-12-15 커플링을 이용한 전력 분배기

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WO2010071304A2 true WO2010071304A2 (fr) 2010-06-24
WO2010071304A3 WO2010071304A3 (fr) 2010-08-12

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KR101124849B1 (ko) * 2009-09-23 2012-03-26 주식회사 비에스테크놀로지 알에프 커넥터
KR101516871B1 (ko) * 2013-06-13 2015-05-04 (주)티알에프 방향성 결합기 하우징
KR101663139B1 (ko) * 2015-02-25 2016-10-10 블루웨이브텔(주) 고주파 평면 배열 안테나
KR101942570B1 (ko) * 2016-11-18 2019-03-04 주식회사 에버플러스 Rf전력분배기
KR102200380B1 (ko) * 2018-12-04 2021-01-07 원광대학교산학협력단 소형 저손실 밀리미터파 전력 분배 결합 장치
KR102131873B1 (ko) * 2019-05-10 2020-07-09 주식회사 성산전자통신 커플러를 구비한 eia 커넥터
KR102096319B1 (ko) * 2019-11-18 2020-04-02 유큐테크놀로지스 주식회사 양방향성 광대역 무선주파수 신호분배기
KR102162361B1 (ko) 2020-05-28 2020-10-07 에이펙스인텍 주식회사 직병렬 호환형 다회로 다채널 분배기

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WO2010071304A3 (fr) 2010-08-12

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