EP2573865A1 - Réseau d'alimentation et antenne - Google Patents

Réseau d'alimentation et antenne Download PDF

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Publication number
EP2573865A1
EP2573865A1 EP11780211A EP11780211A EP2573865A1 EP 2573865 A1 EP2573865 A1 EP 2573865A1 EP 11780211 A EP11780211 A EP 11780211A EP 11780211 A EP11780211 A EP 11780211A EP 2573865 A1 EP2573865 A1 EP 2573865A1
Authority
EP
European Patent Office
Prior art keywords
radio frequency
frequency transmission
feed network
transmission areas
antenna
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
EP11780211A
Other languages
German (de)
English (en)
Other versions
EP2573865A4 (fr
Inventor
Jianping Li
Guoqing Xie
Weihong Xiao
Deqin Duan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
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 Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP15165234.4A priority Critical patent/EP2924801B1/fr
Publication of EP2573865A1 publication Critical patent/EP2573865A1/fr
Publication of EP2573865A4 publication Critical patent/EP2573865A4/fr
Ceased legal-status Critical Current

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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 communication, and in particular, to a feed network and an antenna.
  • PIM Passive InterModulation
  • PIM is a frequency interference caused by the non-linear characteristic of passive devices in an emission system.
  • the nonlinearity of the passive devices brings about higher harmonic waves relative to a working frequency.
  • the mixture of the harmonic waves and the working frequency generates a new group of frequencies, which is similar to the generation of stray signals when two or more frequencies in an active device are mixed in a non-linear device.
  • sensitivity of a receiver decreases, thereby decreasing voice quality or a system carrier-to-interface ratio (C/I), and reducing the capacity of a communication system.
  • the PIM is caused by a lot of factors, including poor mechanical contact of a feed network.
  • a typical communication antenna includes several radiation elements, a feed network and a reflector.
  • the function of the feed network is to allocate signals from a single connector to all dipole antennas.
  • the feed network usually includes controlled impedance transmission lines.
  • FIG. 1 For feed networks of multiband antennas and smart antennas, a method for separating multiple radio frequency transmission areas in the prior art is shown in FIG. 1 .
  • a thin metal interlayer 2 and a thin interlayer 6 are used to separate adjacent radio frequency transmission area 7 and radio frequency transmission area 8.
  • the metal interlayers are connected through a screw 11 and a screw 12.
  • the complex and excessive metal connections in the feed network in the prior art easily cause the PIM index of the antenna to be unstable and unreliable, and deteriorate the received total wide band power (RTWP, Received Total Wide band Power) or received signal strength indication (RSSI, Received Signal Strength Indication) of the system.
  • RWP Received Total Wide band Power
  • RSSI Received Signal Strength Indication
  • Embodiments of the present invention provide a feed network and an antenna, so as to reduce the passive intermodulation interference, and improve the reliability, stability, and mobile communication quality of the antenna.
  • Embodiment of the present invention provides a feed network, including: at least two separate radio frequency transmission areas, at least one of the radio frequency transmission areas including at least two signal lines, where the at least two separate radio frequency transmission areas are separated by a metal interlayer, one physical surface of the metal interlayer is exposed to one of the at least two separate radio frequency transmission areas, and the other physical surface of the metal interlayer is exposed to another one of the at least two separate radio frequency transmission areas.
  • An embodiment of the present invention provides an antenna, including a feed network provided in the foregoing embodiment of the present invention.
  • the radio frequency transmission areas are separated by a metal interlayer without using any screw or rivet connection. Therefore, passive intermodulation interference caused by the metal connection is reduced, which increases the reliability and stability of the antenna, enhances the RTWP or RSSI index of the system, and improves the mobile communication quality.
  • FIG. 1 is a cross-sectional schematic diagram of a feed network according to the prior art
  • FIG. 2 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, orthogonal to a signal transmission direction, of the feed network in FIG. 2 ;
  • FIG. 4 is a schematic diagram of a cross section, orthogonal to a signal transmission direction, of a feed network according to Embodiment 2 of the present invention.
  • FIG 5 is a schematic diagram of a cross section, orthogonal to a signal transmission direction, of a feed network according to Embodiment 3 of the present invention.
  • FIG. 6 is a schematic diagram of a cross section, orthogonal to a signal transmission direction, of a feed network according to Embodiment 4 of the present invention.
  • FIG. 7 is a schematic diagram of a cross section, orthogonal to a signal transmission direction, of a feed network according to Embodiment 5 of the present invention.
  • FIG. 8 is a schematic assembly diagram of a miltiband antenna according to an embodiment of the present invention.
  • FIG. 2 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 a signal transmission direction, of the feed network in PIG. 2.
  • a feed network includes at least two separate radio frequency transmission areas, which are a radio frequency transmission area 21 and a radio frequency transmission area 22.
  • Signal lines such as a signal line 23, a signal line 24, and a signal line 25, are included in each radio frequency transmission area.
  • At least one radio frequency transmission area includes at least two signal lines.
  • the signal line 23 and the signal line 24 are included in the radio frequency transmission area 21.
  • the at least two separate radio frequency transmission areas in the feed network are separated by a metal interlayer 26.
  • the metal interlayer 26 has a certain thickness. Therefore, one physical surface of the metal interlayer is exposed to one of the at least two separate radio frequency transmission areas, and the other physical surface of the metal interlayer is exposed to another one of the at least two separate radio frequency transmission areas. For example, one physical surface 261 of the metal interlayer 26 is exposed to the radio frequency transmission area 21 and the other physical surface 262 is exposed to the radio frequency transmission area 22.
  • the metal interlayer separates the radio frequency transmission without using any screw or rivet. Therefore, the feed network provided in the embodiment of the present invention is devoid of unstable PIM index caused by unreliable connection.
  • Embodiment 2 of the present invention provides another feed network.
  • FIG. 4 is a schematic diagram of a cross section, orthogonal to a signal transmission direction, of a feed network according to Embodiment 2 of the present invention.
  • a metal interlayer includes several physically continuous metal interlayers, where a gap is between the several physically continuous metal interlayers.
  • the metal interlayer 26 shown in FIG. 2 may be replaced by a metal interlayer 461 and a metal interlayer 462 that are physically continuous.
  • the term "physically continuous" refers to that, although the metal interlayer 26 shown in FIG.
  • the metal interlayer 461 and the metal interlayer 462 may be replaced by the metal interlayer 461 and the metal interlayer 462, the metal interlayer 461 and metal interlayer 462 are on the same plane, and may be regarded as one metal interlayer if a gap between the interlayers is filled. Because there is a gap between the interlayers, a signal line or signal may run through the gap, thereby implementing information exchange between two adjacent radio frequency transmission areas or coupling between two radio frequency transmission areas.
  • the feed network shown in FIG. 4 has an alternative solution, which is shown in FIG. 5 .
  • a feed network shown FI . 5 a metal interlayer 56 is still one metal interlayer, but different from the metal interlayer 26 shown in FIG. 2 , the metal interlayer 56 includes a hole (indicated by the dashed line in FIG. 5 ), and a signal line or signal may also run through the hole, thereby still implementing information exchange between two adjacent radio frequency transmission areas or coupling between two radio frequency transmission areas.
  • a metal object such as a aluminum alloy object, a zinc alloy object, or a copper object may be set in the gap (or hole) of the feed network shown in FIG. 4 (or FIG. 5 ); alternatively, a dielectric part such as FR4 material, microwave sheet material, PS (polystyrene), PTFE (polytetrafluoroethylene), PE (polyethylene), PA66 (polyamide) or POM (polyformaldehyde) is set in the gap (or hole).
  • FR4 material microwave sheet material
  • PS polystyrene
  • PTFE polytetrafluoroethylene
  • PE polyethylene
  • PA66 polyamide
  • POM polyformaldehyde
  • a metal object or dielectric part may be set in the gap, as shown in FIG. 6 .
  • one part of a metal object or dielectric part 69 is in the radio frequency transmission area 21, and the other part is in the radio frequency transmission area 22.
  • Setting a metal object or dielectric part in the hole of the feed network shown in FIG. 5 is similar to setting a metal object or dielectric part in the gap of the feed network in FIG. 4 , which is not described in detail.
  • the feed network shown in FIG. 2 to FIG. 6 may be made into a closed or semi-closed structure.
  • the radio frequency transmission area except two ends of the signal transmission direction, is completely closed or partially closed.
  • the radio frequency transmission area 21 is partially closed, and the radio frequency transmission area 22 is completely closed.
  • the radio frequency transmission areas are separated by the metal interlayer without using any screw or rivet connection, thereby reducing passive intermodulation interference caused by the metal connection, increasing the reliability and stability of the antenna, enhancing the RTWP or RSSI index of the system, and improving the mobile communication quality.
  • the metal interlayer is a continuous material layer, no extra size is needed for connection. Therefore, the feed network provided in the present invention has a compact structure, establishes a necessary technical foundation for implementing miniaturization of antennas, especially for miniaturization of multiband and multi-system antennas, reduces the volume and wind load of the antenna, and lowers the requirement on the installation environment of the antenna.
  • the present invention also provides a wireless communication system antenna using the foregoing feed network, for example, a multiband antenna, a dual-polarized antenna, a long term evolution (Long Term Evolution, LTE) antenna, or a smart antenna.
  • a wireless communication system antenna using the foregoing feed network, for example, a multiband antenna, a dual-polarized antenna, a long term evolution (Long Term Evolution, LTE) antenna, or a smart antenna.
  • FIG. 8 is an assembly schematic view of a multiband according to an embodiment of the present invention. To facilitate description, only the parts related to the present invention are shown.
  • the antenna includes several radiation/receiving units 801, a feed network 803 provided in the embodiment of the present invention, a calibration network 804 and a dielectric part substrate 805.
  • the radiation/receiving unit 801 are configured to radiate wireless signals to the outside or receive external wireless signals.
  • the feed network 803 may be printed on the dielectric part substrate 805 and configured to allocate signals from a single connector to each of the radiation/receiving units 801.
  • the calibration network 804 is configured to perform real-time calibration on an amplitude and a phase of each radiation/receiving unit 801 during operation of the antenna system.
  • the radio frequency transmission areas are separated by a metal interlayer without using any screw or rivet connection, thereby reducing passive intermodulation interference caused by the metal connection, increasing the reliability and stability of the antenna, enhancing the RTWP or RSSI index of the system, and improving the mobile communication quality.
  • the metal interlayer is a continuous material layer, no extra size is needed for connection. Therefore, the feed network, provided in the present invention has a compact structure, establishes a necessary technical foundation for implementing miniaturization of antennas, especially for miniaturization of multiband and multi-system antennas, reduces the volume and wind load of the antenna, and lowers the requirement on the installation environment of the antenna.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Support Of Aerials (AREA)
  • Details Of Aerials (AREA)
  • Transceivers (AREA)
  • Telephone Set Structure (AREA)
EP11780211.6A 2010-06-29 2011-05-12 Réseau d'alimentation et antenne Ceased EP2573865A4 (fr)

Priority Applications (1)

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

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP15165234.4A Division EP2924801B1 (fr) 2010-06-29 2011-05-12 Réseau d'alimentation et antenne

Publications (2)

Publication Number Publication Date
EP2573865A1 true EP2573865A1 (fr) 2013-03-27
EP2573865A4 EP2573865A4 (fr) 2013-06-05

Family

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EP11780211.6A Ceased EP2573865A4 (fr) 2010-06-29 2011-05-12 Réseau d'alimentation et antenne
EP15165234.4A Active EP2924801B1 (fr) 2010-06-29 2011-05-12 Réseau d'alimentation et antenne

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP15165234.4A Active EP2924801B1 (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
US10615885B2 (en) 2016-11-28 2020-04-07 Johns Manville Self-adhesive membrane for mitigating passive intermodulation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE542018C2 (en) * 2018-06-08 2020-02-11 Cellmax Tech Ab An antenna arrangement, a radiating element and a method of manufacturing the radiating element

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277832A (en) * 1993-04-27 1994-11-09 British Aerospace Thin film multi-layer interconnect
US5534877A (en) * 1989-12-14 1996-07-09 Comsat Orthogonally polarized dual-band printed circuit antenna employing radiating elements capacitively coupled to feedlines
US5852422A (en) * 1994-04-06 1998-12-22 Mitsubishi Denki Kabushiki Kaisha Switched retractable, extendable, dual antennas for portable radio
JP2005244317A (ja) * 2004-02-24 2005-09-08 Ntt Docomo Inc マイクロストリップアンテナ

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN88105654A (zh) * 1988-01-11 1988-12-07 国防科学技术大学 波导型双模三分贝电桥
JP3864093B2 (ja) * 2002-01-10 2006-12-27 シャープ株式会社 プリント配線基板、電波受信用コンバータおよびアンテナ装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5534877A (en) * 1989-12-14 1996-07-09 Comsat Orthogonally polarized dual-band printed circuit antenna employing radiating elements capacitively coupled to feedlines
GB2277832A (en) * 1993-04-27 1994-11-09 British Aerospace Thin film multi-layer interconnect
US5852422A (en) * 1994-04-06 1998-12-22 Mitsubishi Denki Kabushiki Kaisha Switched retractable, extendable, dual antennas for portable radio
JP2005244317A (ja) * 2004-02-24 2005-09-08 Ntt Docomo Inc マイクロストリップアンテナ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2011140990A1 *

Cited By (5)

* 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
US10778343B2 (en) 2016-11-28 2020-09-15 Johns Manville Method for mitigating passive intermodulation
US11124677B2 (en) 2016-11-28 2021-09-21 Johns Manville Method for mitigating passive intermodulation using roofing material with polymeric and metal layers
US11542414B2 (en) 2016-11-28 2023-01-03 Johns Manville Self-adhesive membrane for mitigating passive intermodulation
US11578238B2 (en) 2016-11-28 2023-02-14 Johns Manville Method for mitigating passive intermodulation

Also Published As

Publication number Publication date
EP2573865A4 (fr) 2013-06-05
CA2803456A1 (fr) 2011-11-17
WO2011140990A1 (fr) 2011-11-17
CN102315518B (zh) 2014-03-12
EP2924801B1 (fr) 2018-09-26
CN102315518A (zh) 2012-01-11
EP2924801A1 (fr) 2015-09-30
CA2803456C (fr) 2018-01-09

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