WO2012105773A2 - Module haute fréquence multimode - Google Patents

Module haute fréquence multimode Download PDF

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Publication number
WO2012105773A2
WO2012105773A2 PCT/KR2012/000679 KR2012000679W WO2012105773A2 WO 2012105773 A2 WO2012105773 A2 WO 2012105773A2 KR 2012000679 W KR2012000679 W KR 2012000679W WO 2012105773 A2 WO2012105773 A2 WO 2012105773A2
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
module
multimode
strip lines
high frequency
Prior art date
Application number
PCT/KR2012/000679
Other languages
English (en)
Korean (ko)
Other versions
WO2012105773A3 (fr
Inventor
남창기
Original Assignee
Nam Chang Gi
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 Nam Chang Gi filed Critical Nam Chang Gi
Priority to JP2013552459A priority Critical patent/JP5817024B2/ja
Publication of WO2012105773A2 publication Critical patent/WO2012105773A2/fr
Publication of WO2012105773A3 publication Critical patent/WO2012105773A3/fr

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Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H01Q1/523—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between antennas of an array

Definitions

  • the present invention relates to an antenna of a wireless communication device, and more particularly, to a high frequency module of a wireless communication device for reducing coupling between antennas in a multimode antenna to have high isolation characteristics.
  • a multi-mode wireless communication device capable of using a plurality of services with one wireless communication device instead of a separate wireless communication device according to each service has been partially realized.
  • the service of information transmission by radio uses electromagnetic waves as a medium, so that a plurality of services are provided to the user by using one frequency for one type of service in the same service area. Therefore, the wireless communication device must have a function of transmitting and receiving electromagnetic waves of a plurality of frequencies.
  • the conventional radio communication apparatus for example, a method of preparing a plurality of single mode antennas corresponding to one frequency and mounting them in one radio communication apparatus has been adopted.
  • the shaft diameter of the high frequency cable applicable to the radio communication apparatus of a user portable dimension has a diameter of about 1 millimeter, the transmission loss of this high frequency cable reaches several s / m.
  • the use of such high-frequency cables increases the power consumed by the high-frequency circuits, thereby significantly reducing the use time of the wireless communication device or increasing the size of the battery, making it difficult for a user to carry the wireless communication device.
  • antennas capable of operating at different frequencies even in a wireless communication apparatus using a two-frequency common antenna have been proposed in Japanese Patent Laid-Open Nos. 61-295905 and 1- 1805805.
  • a transmitter and a receiver are required for each of the input and output terminals at different locations, there is a problem in that integration required for a small device such as a wireless communication device is difficult.
  • Korean Patent No. 10-0774071 discloses a small multimode antenna capable of sharing one feed point at a plurality of frequencies and a high frequency module using the antenna, and one end of a radiation conductor.
  • a single feed point common in frequency is used, and a first port resonant circuit is connected to one end thereof and a second first port resonant circuit is connected to the other end of the radiating conductor. It is proposed that the conductance component of the admittance when the free space is seen from the feed point is the same as the characteristic admittance of the high frequency circuit, and the susceptance component of the admittance is canceled at a plurality of frequencies by a resonance circuit connected to the feed point. It became.
  • FIG. 1 is a schematic structural diagram of a small multi-mode antenna according to Korean Patent Registration No. 10-0774071.
  • Korean Patent Laid-Open Publication No. 1998-702904 uses an antenna and a diplexer operating at a first frequency and a second frequency that is the lowest frequency far from the first frequency, but the diplexer is a capacitive element and an inductive
  • a dual frequency antenna is disclosed that includes an element and combines two signals so that a single coaxial cable can be used for the antenna and provides impedance matching at the first and second operating frequencies.
  • FIG. 2 is a schematic structural diagram of a dual frequency antenna according to Korean Patent Laid-Open Publication No. 1998-702904.
  • Korean Patent Laid-Open Publication No. 10-2010-0026653 includes a ground plane having a finite plane and made of a conductor for use in a multiband by operating an antenna as a monopole or PIFA antenna using a wireless switch; An antenna body for transmitting and receiving radio waves; A feed line electrically interconnecting the ground plane and the antenna body; A shorting pin for grounding the antenna body to the ground plane; And a switch connected to the shorting pin and controlling a connection state with a ground plane of the antenna body.
  • FIG. 3 is a schematic structural diagram of a planar inverted F antenna according to Korean Patent Laid-Open No. 10-2010-0026653.
  • the present invention has been proposed to solve the above problems, and to provide a high frequency module having high isolation characteristics.
  • each antenna is connected in parallel and independently fed to have high isolation characteristics, and when operating in a multi-band, tuning by operating frequency may be possible.
  • it is to provide a multi-mode high-frequency module of a wireless communication device having a high isolation characteristic that can be made small by reducing the electrical length of the feed line.
  • High frequency module including an antenna module and a power supply module according to the present invention for achieving the above object
  • the antenna module includes a multimode antenna resonating in at least one frequency band,
  • the feed module includes at least two strip lines that are at least electrically parallel to the feed portion, wherein the feed portion supplies power radiated through the multimode antenna, and the at least two strip lines are supplied from the feed portion. Delivers power to the multimode antenna,
  • a printed circuit board further comprising a feeding point for connecting the power supplied through the at least two strip lines to the multimode antenna, the number of the at least two strip lines being formed, and wherein the feeding module is formed of an electrical circuit;
  • the antenna module combines the multi-mode antenna coupled to the power supply module in the opposite direction with respect to the printed circuit board, and supports the multi-mode antenna and couples the multi-mode antenna to the antenna support. Further comprising a portion and the antenna coupling portion may be formed on one side of the antenna support,
  • the other side of the antenna support is further formed with a fastening portion for fastening the antenna support to the printed circuit board,
  • the printed circuit board may further include a coupling groove coupled to the coupling portion at a position opposite to the coupling portion formed on the antenna support portion.
  • the power supply module includes
  • a short line is further formed between the feed portion and the ends of the at least two strip lines electrically connected to each other connected to the feed point to supply the in-phase power to the antennas respectively connected to the at least two strip lines.
  • At least two or more tuning lines are provided between the short line and ends of at least two strip lines connected to the feed point to adjust the resonant frequency of the multimode high frequency module and to attenuate coupling between the multimode antennas. Characterized in that each is further formed between the strip line,
  • tuning line is equivalently a series coupling of capacitor, capacitor and inductor or parallel coupling of capacitor and inductor.
  • the short line connected between the at least two strip line is characterized in that the length of 1/4 wavelength of the desired resonance frequency.
  • the multi-mode high-frequency module of the wireless communication device including the antenna module and the power feeding module according to the present invention having the above configuration has a high isolation characteristic by independently feeding each antenna connected in parallel and operating in a multi-band mode. In this case, not only the tuning by operating frequency is possible but also the high isolation characteristic, which makes it possible to manufacture small by reducing the electrical length of the feed line.
  • FIG. 1 is a schematic structural diagram of a small multi-mode antenna according to Korean Patent Registration No. 10-0774071.
  • FIG. 2 is a schematic structural diagram of a dual frequency antenna according to Korean Patent Laid-Open Publication No. 1998-702904.
  • FIG. 3 is a schematic structural diagram of a planar inverted F antenna according to Korean Patent Laid-Open No. 10-2010-0026653.
  • FIG. 4 is a schematic structural diagram of a multi-mode high frequency module of a wireless communication device according to the present invention.
  • FIG. 5 is a view for explaining the principle that the coupling between the antenna is attenuated in the multi-mode high-frequency module of the wireless communication device according to the present invention.
  • FIG. 6 is a diagram of FIG. 5 converted to an equivalent circuit.
  • FIG. 7 illustrates isolation characteristics between antennas at an operating frequency in a wireless communication device equipped with a multi-mode antenna according to the present invention.
  • FIG. 8 is another example of a structure in which an antenna is mounted on a PCB substrate in a wireless communication device equipped with a multi-mode antenna according to the present invention.
  • FIG. 9 illustrates standing wave ratios and frequency response characteristics when an equivalent capacitor value of a tuning line is 1.2 pF in a wireless communication device equipped with a multi-mode antenna according to the present invention.
  • 10 is a standing wave ratio and frequency response characteristics when an equivalent capacitor value of a tuning line is 1.5 pF in a wireless communication device equipped with a multi-mode antenna according to the present invention.
  • FIG. 11 is a standing wave ratio and frequency response characteristic when an equivalent capacitor value of a tuning line is 2.2 pF in a wireless communication device equipped with a multi-mode antenna according to the present invention.
  • FIG. 12 illustrates standing wave ratios and frequency response characteristics when an equivalent capacitor value of a tuning line is 3 pF in a wireless communication device equipped with a multi-mode antenna according to the present invention.
  • FIG. 13 illustrates standing wave ratios and frequency response characteristics when an equivalent capacitor value of a tuning line is 5pF in a wireless communication device equipped with a multi-mode antenna according to the present invention.
  • first strip line 432 second strip line
  • tuning line 460 short line
  • antenna support 820 antenna
  • feed point 850 strip line
  • tuning line 8621 equivalent capacitor
  • FIG. 4 is a schematic configuration diagram of a multi-mode high frequency module of a wireless communication device according to the present invention, which simplifies a structure in which a high frequency module having the multi-mode antenna of FIG. 8 is mounted on a printed circuit board.
  • the high frequency module includes a printed circuit board 420, a power feeding module 430 mounted on the printed circuit board 420, and an antenna module 410 fastened to the printed circuit board.
  • strip lines 431 and 432 for transmitting power input from the power supply to the antennas 411 and 412 are electrically formed in parallel with each other, and the start of the strip lines 431 and 432 is performed.
  • a short line 460 is formed at one side of the strip lines 431 and 432 between the portions P1 and P2 and the antennas 411 and 412, and the short line 460 and the antennas 411 and 412.
  • the tuning line 441 consists of an inductor and a capacitor to provide high isolation between ports.
  • the antenna module 410 is provided with antennas 411 and 412 that are multi-mode, that is, resonate in at least one or more frequency bands to radiate power.
  • FIG. 5 is a circuit diagram of FIG. 4, wherein a power supply is connected to P1 and P2, and strip lines 531 and 532 are connected to P1 and P2, respectively, and a short is formed at one side of the strip lines 531 and 532.
  • Lines 560 are connected, and feed ends P3 521 and P4 522 are electrically connected to antennas 511 and 512 at ends of the strip lines 531 and 532, and the feed points P3 521.
  • Power is supplied to the antennas 511 and 512 through the P4 522.
  • Tuning line consisting of inductors 551 and 552 and capacitors 541 and 542 in strip lines 531 and 532 between the feed points P3 521 and P4 522 and the short line 560 (not shown). ) More included.
  • FIG. 6 shows the power supply module converted to an equivalent circuit in FIG. 5.
  • the power supply module of FIG. 5 may be simplified to a two-port network, and the tuning line 441 of FIG. 4 may be equivalent to the capacitors 621 and 622 and the inductors 631 and 632.
  • the port P3 and the port P4 have a phase difference of 90 degrees electrically, and the port P2 has a 180 degree phase difference electrically with respect to the port P1, and the same magnitude of current is applied, thereby providing high isolation characteristics.
  • port 2 and port 1 preferably have high isolation characteristics, various techniques have been developed for this purpose.
  • the strip line 431 and the strip line 432 are referred to as ⁇ / 4 ( ⁇ ).
  • the design method to have the electrical length of (wavelength of the resonant frequency) is dominant, but it is not easy to design to have an electrical length of ⁇ / 4 on the printed circuit board (PCB), the present invention is equivalent
  • a structure is proposed in which the ports P1 and P2 have an electrical length of ⁇ / 4 even though the electrical length is shortened by adding the tuning lines L2 represented by the inductors 631 and 632 and the capacitors 621 and 622. .
  • the standing wave ratio is a ratio of the minimum value and the maximum value of the standing wave formed by the incident power and the reflected power, and the closer to 1, the smaller the amount of reflection and the better the impedance matching.
  • the coupling between one terminal and the other terminal is preferably minimized, so the power is measured on the other terminal while power is supplied to one side, and the isolation between the terminals is measured as power.
  • Table 1 below summarizes these measured values. As shown in Table 1, it can be seen that the standing wave ratio has the lowest value (1.14) in the resonant frequency band at 3pF, and 1.17 at 2.2pF and 3pF at It can be seen that it has a similar performance to.
  • the isolation characteristic between the terminals is the lowest value in the resonant frequency region at 2.2pF (-30.6dB), which is about 12dB than -18.4dB at 3pF, which is 16 times different. That is, it can be seen that the isolation characteristic is improved by 16 times compared to 3.0 pF at 2.2 pF. Accordingly, it can be seen that it is preferable to select 2.2 pF as the value of the equivalent capacitor of the tuning line.
  • Table 1 1.2pF (standing wave ratio / isolation degree) 1.5pF (standing wave ratio / isolation degree) 2.2pF (standing wave ratio / isolation chart) 3pF (standing wave ratio / isolation degree) 5pF (standing wave ratio / isolation chart)
  • the current applied through the port P1 is met at the port P2 through the loop L1 passing through the short line 640 and the loop L2 passing through the tuning line, and the currents passing through each loop have the same magnitude but phase 180 degrees from each other. It is reversed and canceled out.
  • the power applied to the port P3 and the port P4, that is, the magnitude of the current is preferably the same, for this purpose it can be achieved by appropriately adjusting the values of the inductor and the capacitor of the tuning line.
  • the PCB substrate requires a space that allows sufficient electrical length.
  • this problem can be achieved by adjusting the length and width of the tuning line equivalent to the inductor and the capacitor.
  • the inductor and the capacitor may be set to appropriate values to match the phase and impedance of the power radiated to the antenna. You can also choose.
  • a separate impedance matching circuit 650 may be further added to the input ports P1 and P2 for impedance matching with the antenna.
  • FIG. 7 illustrates isolation characteristics between antennas at an operating frequency in a wireless communication device equipped with a multi-mode antenna according to the present invention.
  • a line marked with ' ⁇ ' is a measure of isolation between antennas, that is, attenuation of coupling, and a line marked with ' ⁇ ' measures return loss from an antenna.
  • the multi-mode high-frequency module according to the present invention can be seen that the coupling between the antenna is significantly attenuated near the desired resonant frequency to reduce the return loss in the antenna, thereby improving the radiation performance.
  • the isolation characteristic may be varied by changing the value of the capacitor in the tuning line formed between the strip lines by changing the transfer characteristic according to the capacitor.
  • the capacitor value is increased, the band having excellent isolation characteristics, i.e., coupling attenuation, is moved to the low frequency band, and if the capacitor value is decreased, the isolation characteristic is moved to the high frequency band, so that the desired resonance frequency is varied.
  • the coupling of the antenna can be significantly reduced at the desired resonant frequency.
  • FIG 8 is another example of a structure in which a high frequency module with a multi-mode antenna according to the present invention is mounted on a printed circuit board.
  • the multi-mode high frequency module basically includes an antenna module, a power supply module, and a printed circuit board.
  • the antenna module includes a multi-mode antenna 820 resonating at a plurality of frequencies and an antenna support 810 that supports the antenna and is coupled to a printed circuit board.
  • the antenna support 810 includes an antenna 820.
  • the antenna coupling part 821 is formed on one side to be firmly coupled to the antenna support 810, and the antenna support 810 is fastened to fasten the antenna support 810 to the printed circuit board 830.
  • the part 822 is formed in the other side.
  • a fastening groove 831 is formed in the printed circuit board 830 to fasten the antenna support 810 so that the fastening portion 822 is coupled to the fastening groove 831 so that the antenna support 810 is a printed circuit. It is fixed to the substrate 830.
  • the antenna module and the printed circuit board can be separated, so that the entire high frequency module is removed. It is possible to replace only the failed module without having to replace it, which increases the reusability of the high frequency module.
  • the printed circuit board 830 is provided with a feed point 840, that is, a connection pad for transmitting power supplied from the power supply 880 to the antenna module.
  • the power supply module includes a power supply 880, a strip line 850, a tuning line 860, and a short line 870.
  • the tuning line includes an equivalent capacitor 861 and an equivalent inductor 862.

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  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Details Of Aerials (AREA)
  • Transceivers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

La présente invention concerne un module d'antenne haute fréquence multimode présentant une isolation importante entre les antenne, dans un dispositif de communication sans fil doté d'au moins deux antennes fonctionnant en modes multiples. Le module d'antenne comprend une antenne multimode qui résonne dans une ou plusieurs bandes de fréquences. Un module d'alimentation en énergie comprend une unité d'alimentation et au moins deux lignes triplaque électriquement parallèles. L'unité d'alimentation fournit l'énergie destinée à l'émission par l'antenne multimode. Lesdites au moins deux lignes triplaque transfèrent l'énergie fournie par l'unité d'alimentation à l'antenne multimode. Des points d'alimentation, destinés au raccordement de l'énergie d'alimentation fournie par lesdites au moins deux lignes triplaque sont formés en nombre égal à celui des lignes triplaque. Le module d'antenne haute fréquence multimode comprend en outre une carte de circuit imprimé sur laquelle un circuit électrique du module d'alimentation est formé.
PCT/KR2012/000679 2011-01-31 2012-01-30 Module haute fréquence multimode WO2012105773A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2013552459A JP5817024B2 (ja) 2011-01-31 2012-01-30 マルチモード高周波モジュール

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020110009528A KR101107650B1 (ko) 2011-01-31 2011-01-31 멀티모드 고주파 모듈
KR10-2011-0009528 2011-01-31

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Publication Number Publication Date
WO2012105773A2 true WO2012105773A2 (fr) 2012-08-09
WO2012105773A3 WO2012105773A3 (fr) 2012-11-29

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PCT/KR2012/000678 WO2012105772A2 (fr) 2011-01-31 2012-01-30 Module haute fréquence multimode
PCT/KR2012/000679 WO2012105773A2 (fr) 2011-01-31 2012-01-30 Module haute fréquence multimode

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JP (1) JP5817024B2 (fr)
KR (1) KR101107650B1 (fr)
WO (2) WO2012105772A2 (fr)

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
JP6869649B2 (ja) * 2016-06-13 2021-05-12 ラピスセミコンダクタ株式会社 半導体装置、通信システムおよび半導体装置の製造方法。
WO2021181546A1 (fr) * 2020-03-11 2021-09-16 三菱電機株式会社 Circuit de découplage
CN117559126B (zh) * 2024-01-11 2024-03-29 成都瑞迪威科技有限公司 自身电尺寸多频可调的辐射体及多频多模单极子天线

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KR20050107881A (ko) * 2004-05-10 2005-11-16 아주대학교산학협력단 광대역 특성의 다중 미앤더 스트립 모노폴 안테나
KR20060059436A (ko) * 2004-11-29 2006-06-02 주식회사 케이티프리텔 위성 디지털 멀티미디어 방송 수신용 단말 안테나 장치
KR20070054977A (ko) * 2005-11-24 2007-05-30 엘지전자 주식회사 광대역 안테나와 그 광대역 안테나를 구비한 전자 기기
KR20100056094A (ko) * 2008-11-19 2010-05-27 엘지이노텍 주식회사 안테나

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JPH0865007A (ja) * 1994-08-22 1996-03-08 Murata Mfg Co Ltd 高周波フィルタ
JP2002164704A (ja) * 2000-11-28 2002-06-07 Matsushita Electric Ind Co Ltd バランス信号を扱う高周波スイッチ、スパイラルインダクタ及び分配器
US8294622B2 (en) * 2008-11-25 2012-10-23 Panasonic Corporation Array antenna apparatus sufficiently securing isolation between feeding elements and operating at frequencies
JP5165602B2 (ja) * 2009-01-09 2013-03-21 株式会社東海理化電機製作所 アンテナ保持構造およびアンテナ装置

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
KR20050107881A (ko) * 2004-05-10 2005-11-16 아주대학교산학협력단 광대역 특성의 다중 미앤더 스트립 모노폴 안테나
KR20060059436A (ko) * 2004-11-29 2006-06-02 주식회사 케이티프리텔 위성 디지털 멀티미디어 방송 수신용 단말 안테나 장치
KR20070054977A (ko) * 2005-11-24 2007-05-30 엘지전자 주식회사 광대역 안테나와 그 광대역 안테나를 구비한 전자 기기
KR20100056094A (ko) * 2008-11-19 2010-05-27 엘지이노텍 주식회사 안테나

Also Published As

Publication number Publication date
JP2014509484A (ja) 2014-04-17
WO2012105772A3 (fr) 2012-11-29
WO2012105773A3 (fr) 2012-11-29
WO2012105772A2 (fr) 2012-08-09
KR101107650B1 (ko) 2012-01-20
JP5817024B2 (ja) 2015-11-18

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