WO2011140990A1 - Réseau d'alimentation et antenne - Google Patents

Réseau d'alimentation et antenne Download PDF

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Publication number
WO2011140990A1
WO2011140990A1 PCT/CN2011/073978 CN2011073978W WO2011140990A1 WO 2011140990 A1 WO2011140990 A1 WO 2011140990A1 CN 2011073978 W CN2011073978 W CN 2011073978W WO 2011140990 A1 WO2011140990 A1 WO 2011140990A1
Authority
WO
WIPO (PCT)
Prior art keywords
radio frequency
feed network
frequency transmission
transmission
metal
Prior art date
Application number
PCT/CN2011/073978
Other languages
English (en)
Chinese (zh)
Inventor
李建平
谢国庆
肖伟宏
段德钦
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP11780211.6A priority Critical patent/EP2573865A4/fr
Priority to CA2803456A priority patent/CA2803456C/fr
Priority to EP15165234.4A priority patent/EP2924801B1/fr
Publication of WO2011140990A1 publication Critical patent/WO2011140990A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P3/00—Waveguides; Transmission lines of the waveguide type
    • H01P3/02—Waveguides; Transmission lines of the waveguide type with two longitudinal conductors
    • H01P3/08—Microstrips; Strip lines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P3/00—Waveguides; Transmission lines of the waveguide type
    • H01P3/02—Waveguides; Transmission lines of the waveguide type with two longitudinal conductors
    • H01P3/08—Microstrips; Strip lines
    • H01P3/088—Stacked transmission lines
    • 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
    • H01Q1/526—Electromagnetic shields
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a feed network and an antenna.
  • PIM Passive InterModulation
  • a passive device In wireless communication systems, Passive InterModulation (PIM) becomes an important factor limiting system capacity as voice and data information is required to pass through within a fixed bandwidth.
  • PIM is a kind of frequency interference caused by the nonlinear characteristics of various passive components in the transmitting system. For example, in a high-power, multi-channel system, the nonlinearity of the passive device will produce a higher harmonic with respect to the operating frequency. Waves, these harmonics are mixed with the operating frequency to produce a new set of frequencies, just as two or more frequencies in an active device are mixed together in a nonlinear device to produce a spurious signal.
  • the spurious intermodulation signal falls within the receiving band of the base station, the sensitivity of the receiver is reduced, resulting in a reduction in call quality or system carrier-to-interference ratio (C/I), and a reduction in the capacity of the communication system.
  • PIM is caused by many factors, including poor mechanical contact of the feeder network.
  • a typical communication antenna consists of several radiating elements, a feed network and a reflector.
  • the function of the feed network is to distribute the signals from a single connector to all dipole antennas.
  • Feed networks are typically constructed of controlled impedance transmission lines.
  • a prior art method of isolating a plurality of radio frequency transmission areas is as shown in FIG.
  • the adjacent RF transmission region 7 and the RF transmission region 8 are separated by a thin metal barrier 2 and a metal spacer 6, and the metal spacers are connected by screws 1 1 and screws 12.
  • the multi-band antenna and the smart antenna's feed network are complex in structure and critical to the reliability of the entire antenna. Therefore, a compact, stable and reliable feeder network is a necessary condition for ensuring multi-band and multi-antenna performance.
  • the metal connection is complicated and the connection is large, which is easy to cause the antenna PI M index to be unstable, the reliability is low, the system receives the total bandwidth power (RTWP, Received Total Wi de band Power) or the received signal strength.
  • the indication (RSSI, Received Signal Strength Indication) deteriorates.
  • Embodiments of the present invention provide a feed network and an antenna to reduce passive intermodulation interference, improve antenna reliability, and improve mobile communication quality.
  • the embodiment of the present invention provides a feed network, including: at least two independent radio frequency transmission areas, at least one signal line is disposed in at least one radio frequency transmission area of the radio frequency transmission area, and the at least two The individual RF transmission regions are separated by a metal spacer, one physical surface of the metal barrier is exposed to one of the at least two independent RF transmission regions, and another physical surface of the metal barrier Exposed to another of the at least two independent RF transmission areas.
  • An embodiment of the present invention provides an antenna, and the foregoing embodiment of the present invention provides a feed network.
  • the feed network provided by the embodiment of the present invention uses a metal compartment to separate the RF transmission areas, and is not connected by screws or rivets. Therefore, the passive intermodulation interference caused by the metal connection is reduced, and the reliability of the antenna is improved. And stability, improve system RTWP or RSSI indicators, improve mobile communication quality.
  • FIG. 1 is a schematic cross-sectional view of a feed network provided by the prior art
  • FIG. 2 is a three-dimensional schematic diagram of a feed network structure according to Embodiment 1 of the present invention
  • 3 is a schematic cross-sectional view of a feed network illustrated in FIG. 2 orthogonal to a signal transmission direction
  • FIG. 4 is a cross-sectional view of a feed network according to Embodiment 2 of the present invention orthogonal to a signal transmission direction;
  • FIG. 5 is a schematic cross-sectional view of a feed network according to Embodiment 3 of the present invention orthogonal to a signal transmission direction;
  • FIG. 6 is a schematic cross-sectional view of a feed network according to Embodiment 4 of the present invention orthogonal to a signal transmission direction;
  • FIG. 7 is a schematic cross-sectional view of a feed network according to Embodiment 5 of the present invention orthogonal to a signal transmission direction;
  • FIG. 8 is a schematic diagram of a multi-band antenna composition according to an embodiment of the present invention.
  • FIG. 3 is a three-dimensional schematic diagram of a feed network structure according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic diagram of a cross-section 27 orthogonal to the signal transmission direction in the feed network illustrated in FIG. 2.
  • the feed network includes at least two independent radio frequency transmission areas, which are respectively a radio frequency transmission area 21 and a radio frequency transmission area 22, and each radio frequency transmission area is provided with a signal line.
  • each radio frequency transmission area is provided with a signal line.
  • At least one of the RF transmission areas is provided with at least two signal lines.
  • the RF transmission area 21 is provided with a signal line 23 and a signal line 24.
  • the at least two independent radio frequency transmission regions in the feed network are separated by a metal spacer 26 instead of using two rivets or screws.
  • the metal spacer 26 has a certain thickness, and therefore, one physical surface thereof is exposed to one of the at least two independent radio frequency transmission regions, and the other physical surface is exposed to the at least two Another RF transmission area in a separate RF transmission area, for example, one physical surface 261 of the metal compartment 26 is exposed to the RF transmission area 21 and the other physical surface 262 is exposed to the other RF transmission area 22.
  • the feed network provided by the embodiment of the present invention does not have an unstable PIM index caused by unreliable connections.
  • Inventive embodiment 2 provides another feed network.
  • a second embodiment of the present invention provides a cross-sectional view of another feed network orthogonal to the direction of signal transmission.
  • the metal spacer includes a plurality of physically continuous metal spacers with gaps between the plurality of physically continuous metal spacers.
  • the metal spacer 26 exemplified in FIG. 2 can be replaced with a physically continuous metal spacer 461 and a metal spacer 462, which is the metal illustrated in FIG.
  • the barrier layer 26 can be replaced with the metal spacer 461 and the metal spacer 462, the metal spacer 461 and the metal spacer 462 are on the same plane, and if the gap therebetween is compensated, it can be regarded as the same metal spacer. Due to the gap between the metal barriers, signal lines or signals can pass therethrough to enable the interaction of information between two adjacent RF transmission regions or the coupling between the two RF transmission regions.
  • the metal spacer 56 is still a metal spacer, but unlike the metal spacer 26 illustrated in Figure 2, the metal spacer 56 has apertures (shown by dashed lines in the figure). ), the signal line or signal can also pass through, and still enable the interaction of information between two adjacent RF transmission areas or the coupling between two RF transmission areas.
  • metal objects such as aluminum alloy, alloy or copper may be placed in the gap (or aperture) of the example feed network of Figure 4 (or Figure 5).
  • part of the metal object or medium is stored in one RF transmission area of two independent RF transmission areas, and the other part is stored in another RF transmission area of two independent RF transmission areas.
  • a metal object or medium can be placed in the gap, as shown in Figure 6.
  • a metal object or medium 69 is partially stored in the RF transmission area 21 and another portion is stored in the RF transmission area 22.
  • the erection of metal objects or media in the apertures of the example feed network of Figure 5 is similar to the erection of metal objects or media in the gaps of the example feed network of Figure 4 and will not be described.
  • the feeding network illustrated in FIGS. 2 to 6 can be made into a closed structure or a half. Closed structure. For example, except for the two ends of the signal transmission direction, the rest of the RF transmission area is fully enclosed or partially enclosed. As shown in FIG. 7, the RF transmission area 21 is partially enclosed, and the RF transmission area 22 is fully enclosed. of.
  • the feed network provided by the embodiment of the present invention uses a metal compartment to separate the RF transmission areas, and is not connected by screws or rivets. Therefore, the passive intermodulation interference caused by the metal connection is reduced, and the reliability of the antenna is improved. And stability, improve the system RTWP or RSSI indicators, improve the quality of mobile communication, at the same time, because the metal compartment is a continuous material layer, no additional size is needed for connection, therefore, the feed network provided by the invention is compact in structure,
  • the miniaturization of antennas, especially the miniaturization of multi-band and multi-system antennas establishes the necessary technical basis to reduce the antenna volume and wind load and reduce the installation environment requirements of the antenna.
  • FIG. 8 is a schematic diagram showing the composition of a multi-band antenna according to an embodiment of the present invention. For convenience of description, only parts related to the present invention are shown.
  • the antenna includes a plurality of radiation/receiving units 801, a feed network 803 provided by an embodiment of the present invention, a calibration network 804, and a dielectric substrate 805.
  • the radiation/receiving unit 801 is for radiating a wireless signal or receiving a wireless signal from the outside, and the feed network 803 can be printed on the dielectric substrate 805 for distributing signals from a single connector to the respective radiation/receiving units 801.
  • the calibration network 804 is used to perform real-time calibration of the amplitude phase of each of the radiation/receiving units 801 while the antenna system is operating.
  • the feeding network of the present invention uses a metal compartment to separate the RF transmission areas, not by screws or rivets, the passive intermodulation interference caused by the metal connection is reduced, and the reliability and stability of the antenna are improved. Improve the RTWP or RSSI indicator of the system and improve the quality of mobile communication.
  • the metal compartment is a continuous material layer and does not require additional size to be connected, the feed network provided by the present invention is compact in structure, and the antenna is miniaturized. In particular, the miniaturization of multi-band and multi-system antennas establishes the necessary technical basis to reduce the antenna volume and wind load and reduce the installation environment requirements of the antenna.
  • a feed network and an antenna provided by an embodiment of the present invention are described in detail above.

Abstract

La présente invention concerne, dans des modes de réalisation, un réseau d'alimentation et une antenne destinés à réduire les interférences d'intermodulation passives qui améliorent la fiabilité et la stabilité de la qualité des communications mobiles de l'antenne. Le réseau d'alimentation comprend au moins deux zones de transmission de fréquences radio distinctes, au moins deux lignes de signaux sont intégrées dans au moins une zone de transmission de fréquences radio des zones de transmission de fréquences radio et les deux zones de transmission de fréquences radio distinctes au moins sont séparées par une intercouche métallique. Une surface physique de l'intercouche métallique est exposée à une zone de transmission de fréquences radio des deux zones de transmission de fréquences radio distinctes au moins et l'autre surface physique de l'intercouche métallique est exposée à l'autre zone de transmission de fréquences radio des deux zones de transmission de fréquences radio distinctes au moins. Dans le réseau d'alimentation de la présente invention, les zone de transmission de fréquences radio sont séparées par l'intercouche métallique au lieu d'être raccordées par des boulons ou des rivets ; ainsi, les interférences d'intermodulation passive causées par la connexion métallique sont réduites et la fiabilité et la stabilité des antennes, le critère de Puissance de la bande passante totale reçue (RTWP) et l'Indication de la qualité du signal reçu (RSSI) d'un système, ainsi que la qualité de communication mobile sont améliorés.
PCT/CN2011/073978 2010-06-29 2011-05-12 Réseau d'alimentation et antenne WO2011140990A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP11780211.6A EP2573865A4 (fr) 2010-06-29 2011-05-12 Réseau d'alimentation et antenne
CA2803456A CA2803456C (fr) 2010-06-29 2011-05-12 Reseau d'alimentation et antenne
EP15165234.4A EP2924801B1 (fr) 2010-06-29 2011-05-12 Réseau d'alimentation et antenne

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201010215927.9A CN102315518B (zh) 2010-06-29 2010-06-29 一种馈电网络和天线
CN201010215927.9 2010-06-29

Publications (1)

Publication Number Publication Date
WO2011140990A1 true WO2011140990A1 (fr) 2011-11-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/073978 WO2011140990A1 (fr) 2010-06-29 2011-05-12 Réseau d'alimentation et antenne

Country Status (4)

Country Link
EP (2) EP2573865A4 (fr)
CN (1) CN102315518B (fr)
CA (1) CA2803456C (fr)
WO (1) WO2011140990A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112262498A (zh) * 2018-06-08 2021-01-22 塞尔马克斯技术股份公司 天线布置、辐射元件及制造辐射元件的方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10615885B2 (en) 2016-11-28 2020-04-07 Johns Manville Self-adhesive membrane for mitigating passive intermodulation

Citations (1)

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Publication number Priority date Publication date Assignee Title
CN1431857A (zh) * 2002-01-10 2003-07-23 夏普公司 印刷电路板、无线电波接收转换器以及天线装置

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US2894216A (en) * 1956-06-11 1959-07-07 Bell Telephone Labor Inc Non-reciprocal wave transmission
US3098983A (en) * 1960-06-29 1963-07-23 Merrimac Res And Dev Inc Wideband microwave hybrid
SE441640B (sv) * 1980-01-03 1985-10-21 Stiftelsen Inst Mikrovags Forfarande och anordning for uppvermning medelst mikrovagsenergi
US4818964A (en) * 1986-04-28 1989-04-04 Hughes Aircraft Company Switchable multi-power-level short slot waveguide hybrid coupler
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CA2030963C (fr) * 1989-12-14 1995-08-15 Robert Michael Sorbello Antenne a circuit imprime fonctionnant dans deux bandes a polarisations orthogonales et utilisant des elements rayonnants couples capacitivement aux lignes d'alimentation
GB2277832B (en) * 1993-04-27 1997-01-15 British Aerospace Thin film multi-layer interconnect
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CN1431857A (zh) * 2002-01-10 2003-07-23 夏普公司 印刷电路板、无线电波接收转换器以及天线装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112262498A (zh) * 2018-06-08 2021-01-22 塞尔马克斯技术股份公司 天线布置、辐射元件及制造辐射元件的方法

Also Published As

Publication number Publication date
CA2803456C (fr) 2018-01-09
CA2803456A1 (fr) 2011-11-17
CN102315518B (zh) 2014-03-12
EP2924801A1 (fr) 2015-09-30
EP2924801B1 (fr) 2018-09-26
CN102315518A (zh) 2012-01-11
EP2573865A4 (fr) 2013-06-05
EP2573865A1 (fr) 2013-03-27

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