WO2012162985A1 - Antenne et procédé d'émission de signaux - Google Patents

Antenne et procédé d'émission de signaux Download PDF

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Publication number
WO2012162985A1
WO2012162985A1 PCT/CN2011/080043 CN2011080043W WO2012162985A1 WO 2012162985 A1 WO2012162985 A1 WO 2012162985A1 CN 2011080043 W CN2011080043 W CN 2011080043W WO 2012162985 A1 WO2012162985 A1 WO 2012162985A1
Authority
WO
WIPO (PCT)
Prior art keywords
digital
vector
signal
radio frequency
splitter
Prior art date
Application number
PCT/CN2011/080043
Other languages
English (en)
Chinese (zh)
Inventor
何平华
朱祖武
杨熹
周贤华
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 CN201180002143.0A priority Critical patent/CN103503233B/zh
Priority to PCT/CN2011/080043 priority patent/WO2012162985A1/fr
Publication of WO2012162985A1 publication Critical patent/WO2012162985A1/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
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0697—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using spatial multiplexing

Definitions

  • the present invention belongs to the field of communication technologies, and in particular, to an antenna and a signal transmission method.
  • variable lobes in the lobe direction are a major functional requirement.
  • the method of adjusting the downtilt angle is divided into mechanical downtilt and electric downtilt.
  • the method of mechanical downtilt adjusts the shape of the lobe cover after adjusting the downtilt angle, while the downtilt angle is adjusted by the method of electric downtilt. This problem will occur, so the application of electric downtilt is more extensive.
  • a prior art method of electrically tilting is disclosed, specifically by adjusting the downtilt angle by vector synthesis of signals.
  • the working process is as follows: dividing one RF transmission signal into two paths; then adjusting the phase difference of the two signals; using a phase to power converter, converting the phase difference of the two signals into a power difference by a signal vector synthesis method; The two signals are respectively divided into multiple signals; the power to phase converter is used to reduce the power difference to the phase difference by the signal vector synthesis method; finally, it is transmitted to the antenna radiating unit, and converted into an electromagnetic wave signal, thereby forming a radiation having a specific downtilt angle.
  • Lobe map After the RF signal is split into two paths, the phase difference between the two signals is adjusted to adjust the electric downtilt.
  • the inventors have found that at least the following problems exist in the prior art: After one RF signal is divided into two paths by the power splitter, the phase difference is adjusted by the phase shifter, and then the phase difference is adjusted by the phase to power converter. The conversion into a power difference causes a technical problem that the structure of the antenna is complicated.
  • Embodiments of the present invention provide an antenna and a signal transmission method.
  • the antenna includes at least a digital splitter, a digital beamformer, a transceiver, An RF splitter, a vector synthesizer and a radiating element; one end of the digital splitter is connected to a common public wireless interface, and the other end is connected to at least two digital beamformers; one end of each of the digital beamformers The digital splitter is connected, and the other end is connected to a transceiver; one end of each of the transceivers is connected to a digital beamformer, and the other end is connected to a combined end of a radio frequency splitter;
  • the RF splitter includes at least two branch ends and one combining end; the combining end is connected to a transceiver, and each branch end is connected to one input end of a vector synthesizer; The input ends of the vector synthesizer are respectively connected to one of the respective RF splitters, and the output end is connected to the radiating unit.
  • the signal transmission method includes:
  • At least two baseband signals having a fixed phase difference for example, 90 degrees out of phase
  • the baseband signals are respectively modulated into radio frequency signals
  • One branch is taken from each of the radio frequency signals for vector synthesis; the vector synthesized radio frequency signal is converted into an electromagnetic wave signal, and the electromagnetic wave signal is transmitted.
  • the digital beamformer is used to adjust each digital signal, thereby adjusting the amplitude of each RF signal of the transceiver, so that the power difference of each RF signal is generated.
  • the phase difference of the array of radiating elements is generated in the vector synthesis by using different power differences to change various electrical downtilts.
  • Figure 1 is a schematic diagram showing the internal structure of a conventional antenna
  • FIG. 2 is a schematic diagram of an internal structure of an antenna according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic diagram of vector synthesis of an antenna according to Embodiment 1 of the present invention
  • FIG. 4 is an antenna of Embodiment 2 of the present invention
  • FIG. 5 is a schematic diagram showing the internal structure of an antenna according to Embodiment 3 of the present invention.
  • an antenna provided by an embodiment of the present invention includes a digital splitter 1, a digital beamformer 2, a transceiver 3, a radio frequency splitter 4, a vector synthesizer 5, and a radiating element 6.
  • One end of the digital splitter 1 is connected to a common public wireless interface, and the other end is connected with at least two digital beam forming devices (DBFs) 2; one end of each digital beamformer 2 and a digital splitter 1 connected, the other end is connected to a transceiver (TRX, Transceiver) 3; one end of each transceiver 3 is connected to a digital beamformer 2, and the other end is connected to a combined end of a radio frequency splitter 4;
  • Each of the RF splitters 4 includes at least two branch ends and one combined end, the combined ends are connected to a transceiver 3, and each branch end is connected to an input end of a vector synthesizer 5; The input of each vector synthesizer 5 is connected to one of the respective RF splitters 4; each
  • each of the RF splitters 4 includes three branch ends as an example for description.
  • one digital signal is divided into two paths by the digital splitter 1, and then two digital beamformers 2 are used to adjust two digital signals into two baseband signals with a fixed phase difference of 90°, and The amplitudes of the two baseband signals are respectively adjusted, and then the two baseband signals respectively modulate the two baseband signals into radio frequency signals and amplify them.
  • the baseband signal itself is also a digital signal, and the amplitude here means that the baseband signal is modulated to a size corresponding to the amplitude of the radio frequency signal.
  • each RF signal is divided into three branches by the RF splitter 4, and the RF signals of one branch of the RF splitter 4 and the RF signal of one branch of the other RF splitter 4 are respectively divided into one.
  • the group is connected to the input of a vector combiner 5.
  • This example is divided into three groups, so the three sets of RF signals are respectively connected to the inputs of the three vector synthesizers 5.
  • the signals of each group of branches are vector-combined in three vector synthesizers 5, as shown in Fig.
  • the radiation unit 6 is used to convert the vector synthesized radio frequency signal into an electromagnetic wave signal, and emit an electromagnetic wave signal.
  • the digital beamformer 2 is used to adjust the amplitudes of the two baseband signals of A and B, so that the power difference between the two baseband signals of the incoming and the B is generated; after being modulated and amplified by the transceiver, and then split by the RF splitter 4, each will be Group branches for vector synthesis.
  • each will be Group branches for vector synthesis.
  • a vector is increased and the B vector is reduced, then A l, A2, and A3 in Fig. 3 will be elongated, and B l, B2, and B3 will be shortened, and the resultant vector represented by the white arrow will be shortened.
  • an output of the vector synthesizer 5 is directly connected to a radiating element 6.
  • the output of the vector synthesizer 5 is connected to the radiating unit 6 one-to-one, A relatively simple connection, each radiating element 6 is able to respond quickly to the signal vector of its corresponding output.
  • the vector synthesizer 5 is a 180-degree bridge.
  • the bridge has a simple structure and is capable of synthesizing signals with vectors and exciting the radiating elements with the synthesized signals.
  • other passive microwave devices can also be used as vector synthesizers.
  • the above embodiment is described by taking a transmission signal flow as an example. Based on the understanding of the transceiver and the antenna system by those skilled in the art, the same applies to the received signal.
  • the receiving signal is opposite to the flow of the transmitting signal; the function of the transceiver is to demodulate the radio frequency signal into a baseband signal.
  • the RF splitter and the digital splitter correspond to the RF combiner and the digital combiner. .
  • Embodiment 2 is basically the same as Embodiment 1, except that it is as shown in Fig. 4.
  • one output end of the vector synthesizer 5 is connected to at least two radiating elements through a power splitter 7.
  • each power splitter 7 is connected to two radiating elements 6 .
  • the power splitter 7 it is possible to make the antenna have more radiating elements 6 without increasing the number of vector synthesizers 5, and without increasing the number of branches of the power splitter 4.
  • the power splitter 7 is actually equivalent to an RF splitter; for the received signal, the splitter 7 is equivalent to the RF combiner. As described in Embodiment 1, the transmitted signal and the received signal are reversible.
  • This embodiment is basically the same as the first embodiment, and the difference is that, as shown in FIG. 5, in this embodiment, the branch A 1 of the RF splitter A and the branch B4 of the RF splitter B do not pass the vector.
  • the synthesizer 5 is directly connected to the radiating element 6. In practical applications, not all RF signals of the branch participate in vector synthesis.
  • S2 generating at least two baseband signals having a fixed phase difference according to the at least two digital signals, and adjusting amplitudes of the at least two baseband signals;
  • the digital beamformer generates at least two baseband signals having a fixed phase difference according to the at least two digital signals, and adjusts amplitudes of the at least two baseband signals.
  • S5 respectively, taking one branch from each RF signal for vector synthesis
  • S6 converting the vector synthesized RF signal into an electromagnetic wave signal, and transmitting the electromagnetic wave signal.
  • the radiating unit can be utilized to convert the vector synthesized radio frequency signal into an electromagnetic wave signal and emit an electromagnetic wave signal.
  • the vector synthesizer is a 180 degree bridge.
  • the bridge has a simple structure and is capable of synthesizing signals with vectors and exciting the radiating elements with the synthesized signals.
  • other passive microwave devices can also be used as vector synthesizers.
  • the signal transmitting method provided by the embodiment of the present invention may further include:
  • S7 The vector synthesized RF signal is distributed to at least two radiating elements by using a power splitter.
  • each radiating element in S6 converts the radio frequency signal assigned to itself into an electromagnetic wave signal and transmits the electromagnetic wave signal.
  • the embodiment of the present invention has the same technical features as the antenna provided by the embodiment of the present invention described above, the same technical effect can be produced and the same technical problem can be solved.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

L'invention concerne une antenne et un procédé d'émission de signaux, appartenant au domaine des technologies de communication. Le problème technique selon lequel les structures d'antennes existantes sont compliquées est résolu. L'antenne comprend un coupleur numérique, une extrémité du coupleur numérique étant connectée à une interface sans fil publique universelle et son autre extrémité étant connectée à au moins deux conformateurs de faisceaux numériques et à un émetteur-récepteur. Le procédé d'émission de signaux comprend : la division d'un trajet de signal numérique en au moins deux trajets ; la génération d'au moins deux signaux de bande de base à déphasage fixe à partir desdits deux trajets de signaux numériques ou plus et le réglage de l'amplitude desdits deux signaux de bande de base ou plus ; et la modulation des signaux de bande de base en un signal de radiofréquence au moyen d'un émetteur-récepteur. La présente invention est appliquée pour simplifier la structure d'antenne.
PCT/CN2011/080043 2011-09-22 2011-09-22 Antenne et procédé d'émission de signaux WO2012162985A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201180002143.0A CN103503233B (zh) 2011-09-22 2011-09-22 天线以及信号发射方法
PCT/CN2011/080043 WO2012162985A1 (fr) 2011-09-22 2011-09-22 Antenne et procédé d'émission de signaux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2011/080043 WO2012162985A1 (fr) 2011-09-22 2011-09-22 Antenne et procédé d'émission de signaux

Publications (1)

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WO2012162985A1 true WO2012162985A1 (fr) 2012-12-06

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PCT/CN2011/080043 WO2012162985A1 (fr) 2011-09-22 2011-09-22 Antenne et procédé d'émission de signaux

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CN (1) CN103503233B (fr)
WO (1) WO2012162985A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016209127A1 (fr) * 2015-06-24 2016-12-29 Telefonaktiebolaget Lm Ericsson (Publ) Réseau de distribution de signal

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Publication number Priority date Publication date Assignee Title
CN114124634A (zh) 2017-04-27 2022-03-01 上海朗桦通信技术有限公司 一种被用于无线通信的用户设备、基站中的方法和装置
CN110545113B (zh) * 2018-05-28 2020-12-25 上海华为技术有限公司 一种射频信号发射方法、装置和系统
CN110767985B (zh) 2019-09-24 2023-03-17 深圳三星通信技术研究有限公司 基站天线及基站
CN111276794B (zh) * 2020-03-20 2024-06-04 京信通信技术(广州)有限公司 分频基站天线及其馈电网络

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CN1792005A (zh) * 2003-05-17 2006-06-21 昆特尔科技有限公司 具有可调电倾角的相控阵天线系统
CN1795581A (zh) * 2003-04-02 2006-06-28 昆特尔科技有限公司 具有可变电倾角的相控阵天线系统
CN1868089A (zh) * 2003-07-18 2006-11-22 Ems技术公司 垂直电下倾天线

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US5966102A (en) * 1995-12-14 1999-10-12 Ems Technologies, Inc. Dual polarized array antenna with central polarization control
US7639196B2 (en) * 2001-07-10 2009-12-29 Andrew Llc Cellular antenna and systems and methods therefor
GB0224341D0 (en) * 2002-10-19 2002-11-27 Qinetiq Ltd Mobile radio base station
WO2011091039A1 (fr) * 2010-01-19 2011-07-28 Quintel Technology Limited Procédé et appareil pour balayage de motif de rayonnement d'antenne

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CN1795581A (zh) * 2003-04-02 2006-06-28 昆特尔科技有限公司 具有可变电倾角的相控阵天线系统
CN1792005A (zh) * 2003-05-17 2006-06-21 昆特尔科技有限公司 具有可调电倾角的相控阵天线系统
CN1868089A (zh) * 2003-07-18 2006-11-22 Ems技术公司 垂直电下倾天线

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016209127A1 (fr) * 2015-06-24 2016-12-29 Telefonaktiebolaget Lm Ericsson (Publ) Réseau de distribution de signal
US10608338B2 (en) 2015-06-24 2020-03-31 Telefonaktiebolaget Lm Ericsson (Publ) Signal distribution network
US10950936B2 (en) 2015-06-24 2021-03-16 Telefonaktiebolaget Lm Ericsson (Publ) Signal distribution network

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Publication number Publication date
CN103503233B (zh) 2015-07-08
CN103503233A (zh) 2014-01-08

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