WO2019196017A1 - Dispositif d'antenne - Google Patents

Dispositif d'antenne Download PDF

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Publication number
WO2019196017A1
WO2019196017A1 PCT/CN2018/082560 CN2018082560W WO2019196017A1 WO 2019196017 A1 WO2019196017 A1 WO 2019196017A1 CN 2018082560 W CN2018082560 W CN 2018082560W WO 2019196017 A1 WO2019196017 A1 WO 2019196017A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
receiving
antenna device
transmitting
array
Prior art date
Application number
PCT/CN2018/082560
Other languages
English (en)
Chinese (zh)
Inventor
毛孟达
Original Assignee
海能达通信股份有限公司
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 海能达通信股份有限公司 filed Critical 海能达通信股份有限公司
Priority to PCT/CN2018/082560 priority Critical patent/WO2019196017A1/fr
Publication of WO2019196017A1 publication Critical patent/WO2019196017A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems

Definitions

  • the present invention relates to the field of mobile communications, and in particular to an antenna device.
  • Private network narrowband communication usually refers to walkie-talkie and trunk communication, dividing the frequency into different unit intervals, and transmitting the modulated signal in this frequency band, thereby becoming the carrier for both parties to make voice calls.
  • the combination of the baseband unit and the radio frequency unit and the integrated base station form are dominant. Since the private network narrowband system has a sufficiently far coverage distance relative to the public network, there is a problem that the private network wireless communication system is unbalanced up and down.
  • the development of private networks introduces new antenna configurations on the uplink, such as smart antennas, which can extend the uplink coverage with a single base station device and complete wide coverage to meet the needs of private network customers.
  • the general smart antenna is a transmitting and receiving common antenna, and is simultaneously shaped.
  • the terminal sends a communication signal to the base station (the downlink, that is, the base station sends a communication signal to the terminal), and the base station dynamically adjusts the receiving antenna according to the power of the received terminal.
  • the amplitude and phase characteristics are combined to form a suitable pattern, and the transmitted antennas are assigned the same weight.
  • the other is the uplink and downlink separation.
  • the above example uses the array antenna as an example. Because the directionality of different weights is very different, the uplink coverage is not easy to control. If the uplink coverage is too large, it is necessary to consider desensitization. Solve the problem of the upside. Smart antenna algorithms are complex and costly. Devices using smart antennas are relatively rare. Due to factors such as technology and price, smart antennas have not been widely used in communications.
  • the technical problem to be solved by the present invention is to provide an antenna device that solves the problem of unbalanced up and down wireless communication systems by extending the coverage of signals received by the receiving antennas.
  • a transmitting antenna for transmitting a signal
  • a plurality of receiving antennas for receiving signals the plurality of receiving antennas forming a ring antenna array
  • the difference between the maximum path loss allowed by the signal transmitted by the transmitting antenna and the maximum path loss allowed by the signal received by the receiving antenna is a compensation gain, which is provided by a receiving antenna in a corresponding sector of the ring antenna array And a propagation distance corresponding to a maximum path loss allowed by the signal received by the receiving antenna is greater than or equal to a propagation distance corresponding to a maximum path loss allowed by the signal transmitted by the transmitting antenna.
  • the antenna device of the present invention transmits an antenna for transmitting a signal; a plurality of receiving antennas are used for receiving signals, and the plurality of receiving antennas form a loop antenna array; a receive antenna in a respective sector of the loop antenna array to provide a compensation gain of a difference between a maximum path loss allowed by a signal transmitted by the transmit antenna and a maximum path loss allowed by a signal received by the receive antenna to cause the receive
  • the propagation path distance corresponding to the maximum path loss allowed by the signal received by the antenna is greater than or equal to the propagation distance corresponding to the maximum path loss allowed by the signal transmitted by the transmitting antenna, that is, by extending the coverage of the signal received by the receiving antenna to solve the private network.
  • FIG. 1 is a schematic structural view of an antenna device of the present invention
  • FIG. 2 is a schematic diagram showing the calculation of the radius of the loop antenna array in the antenna device of the present invention
  • FIG. 3 is a schematic diagram of compensation required for an antenna device of the present invention.
  • FIG. 4 is a schematic diagram of sector division of a receiving antenna in an antenna apparatus according to the present invention.
  • Figure 5 is a schematic diagram showing the calculation of the directivity of the loop antenna array in the antenna device of the present invention.
  • Figure 6 is a schematic view showing the fixing structure of the antenna device of the present invention.
  • Figure 7a is a schematic diagram showing the connection of a receiving antenna and a receiver in the antenna device of the present invention.
  • Figure 7b is a schematic diagram showing another connection between a receiving antenna and a receiver in the antenna device of the present invention.
  • FIG. 8a to 8c are schematic structural views showing different structures of the antenna device according to the present invention.
  • Fig. 9 is a top plan view showing the support arm of the antenna device fixing structure of the present invention after being unfolded.
  • FIG. 1 is a schematic structural diagram of an antenna device according to the present invention.
  • the antenna device includes:
  • the difference between the maximum path loss allowed by the signal transmitted by the transmitting antenna 20 and the maximum path loss allowed by the signal received by the receiving antenna 40 is a compensation gain, which is provided by the receiving antenna 40 in the corresponding sector of the ring antenna array.
  • the compensation gain is such that the propagation path distance corresponding to the maximum path loss allowed by the signal received by the receiving antenna 40 is greater than or equal to the propagation distance corresponding to the maximum path loss allowed by the signal transmitted by the transmitting antenna 20.
  • the transmitting antenna 20 is an omnidirectional antenna
  • the spacing between two adjacent antennas of the plurality of receiving antennas 40 is less than one wavelength of the operating frequency of the receiving antenna 40;
  • the number of the plurality of receiving antennas 40 is greater than or equal to eighteen;
  • the plurality of receiving antennas 40 are circumferentially disposed around the transmitting antenna 20;
  • the plurality of receiving antennas 40 are arranged in a circular and even arrangement around the transmitting antenna 20 .
  • FIG. 2 is a schematic diagram of the radius calculation of the ring antenna array ring in the antenna device of the present invention.
  • a is the radius of the ring of the ring antenna array
  • ⁇ is the angle between the adjacent antenna radii
  • D is the spacing between the adjacent two elements, ie, the receiving antenna 40
  • a (D/2)/sin( ⁇ /2)
  • the receiving antenna 40 is 19
  • the difference between the maximum path loss allowed by the signal transmitted by the transmitting antenna and the maximum path loss allowed by the signal received by the receiving antenna is the compensation gain, the maximum allowable path loss and the transmitter transmit power, the receiver sensitivity, the antenna gain, and the antenna
  • the environment in which the device is located is related to the wireless channel model.
  • Pr is the receiving end sensitivity
  • Pt is the transmitting end power
  • Cr is the receiving end connector and cable loss
  • Ct is the transmitting end connector and cable loss
  • Gr is the receiving end antenna gain
  • Gt is the transmitting end antenna gain
  • FL is the maximum path loss.
  • the channel model depends on the space corresponding to the environment in which the antenna device is located.
  • the coverage distance of the antenna device can be determined by combining the channel model with the maximum allowable spatial loss.
  • the channel model may be an Okumura-Hata model, and the specific calculation formula is as follows:
  • the antenna calculates the maximum path loss allowed by the downlink by calculating the downlink (ie, the transmit signal of the transmit antenna), calculates the uplink (ie, the received signal of the receive antenna), and obtains the maximum path loss allowed in the uplink, and subtracts the two values.
  • the required compensation gain can be obtained.
  • the downlink is the distance covered by the downlink antenna
  • the uplink0 is the coverage distance by the same omnidirectional antenna.
  • uplinkX is the expected coverage distance of the antenna shaped by the beam
  • uplinkX-uplink0 is the compensation gain needed to solve the imbalance of the wireless communication system.
  • the division of the ring antenna array sector is performed by dividing the receiving antenna 40 according to a required compensation gain of the antenna device, and forming the X receiving antennas 40 in the circular antenna array.
  • the sector may obtain the compensation gain, the sector consisting of the receiving antennas M to N, comprising a total of X of the receiving antennas 40;
  • M and N are any two of the receiving antennas 40 constituting the ring antenna array.
  • the X satisfies the following condition: 10 log (X) dB is greater than or equal to the compensation gain.
  • FIG. 4 is a schematic diagram of the division of the receiving antenna sectors in the antenna apparatus of the present invention. It is assumed that three sectors formed by the receiving antenna 40 are required to compensate for the required compensation gain, that is, three of the receiving antennas 40. The boosted gain of 10 log (3) dB is greater than or equal to the desired compensation gain. Then the sector is divided as follows, the ring antenna array is composed of N receiving antennas 40, that is, array elements, sector 1 is composed of array elements 1, array elements 2, and array elements 3; sector 2 is array element 2 , array element 3, array element 4 composition; and so on, the last array element and the first few array elements form a sector, such as array element N, array element 1, array element 2.
  • the maximum path loss allowed by the signal is extended by the extension of the signal coverage received by the receiving antenna to solve the up-and-down imbalance of the private network wireless communication system.
  • the antenna device filters the communication signal according to the directivity of the ring antenna array, and then accesses the uplink communication.
  • the compensation gain is provided by a receiving antenna in a corresponding sector of the ring antenna array, specifically:
  • the directivity of the ring antenna array satisfies the following formula:
  • S is the electromagnetic field
  • N is the number of receiving antennas
  • I n is the excitation current amplitude of the nth receiving antenna
  • ⁇ n is the angle between the nth receiving antenna and the x axis
  • ⁇ and ⁇ are the introduced variables
  • j is the complex unit
  • k is a constant
  • k 2 ⁇ / ⁇
  • ⁇ is the wavelength of the frequency band in which the antenna is located.
  • FIG. 5 is a schematic diagram of the calculation of the directivity of the loop antenna array in the antenna device of the present invention.
  • a ring antenna array having N isotropic receiving antennas 40 that is, array elements are uniformly arranged along a circumference of radius a, and S( ⁇ , ⁇ ) is a far field region P( ⁇ , in the ring antenna array.
  • the main lobe (the radiation lobe containing the desired maximum radiation direction in the array antenna pattern) is called the main lobe of the antenna, the maximum value points to ( ⁇ 0 , ⁇ 0 ), and the excitation phase of the nth array element is
  • ⁇ n -kasin ⁇ 0 cos( ⁇ 0 - ⁇ n )
  • the directivity of the loop antenna array can be calculated and the radiation characteristics analyzed. It is.
  • the antenna device determines the additional antenna gain required for the uplink and downlink balance, and the associated I n amplitude phase requirement can be obtained through algorithm synthesis.
  • the antenna device of the present invention is applied to the uplink receiving by selecting a suitable virtual sector, and specifically, the terminal signal strength in each sector is dynamically obtained, and the most suitable sector is selected according to a certain algorithm for demodulation processing. For example, when the mobile station enters the macro sector, the switching beam system selects a beam that receives the strongest signal for the user communication, and the system continuously monitors the strength of the signal during the communication process, and can switch when the signal is weak. Go to another beam to ensure communication quality.
  • the antenna device fixing structure of the present invention further includes:
  • Fixing rod 10 fixing the antenna device at a destination through one end of the fixing rod
  • the other end of the fixing rod 10 is fixed to the transmitting antenna 20;
  • the fixing rod 10 is provided with a plurality of supporting arms 30, one end of each supporting arm 30 is fixed on the fixing rod 10, so that the plurality of supporting arms 30 are arranged around the fixing rod 10, And the other end of each support arm is used to set the receiving antenna 40, and the plurality of support arms 30 are unfolded or closed with respect to the fixed rod 10.
  • the antenna device further includes a gear transmission 11 and a drive chain 12, the drive chain 12 being coupled to one end of the support arm 30 via a gear transmission 11, the gear transmission 11 controlling the support arm through the drive chain 12 30. Expanding or closing; the antenna device further includes a receiver 50 and a beam former 60 for receiving signals and shaping the received signals to form a virtual antenna.
  • the receiver 50 is integrated with the beam former 60 in the fixed rod 10.
  • the receiver 50 is in the same beamformer as the beamformer.
  • the antenna devices are integrated outside, and as shown in FIG. 7b, each array element 40 (the receiving antenna 40 constituting the ring antenna array is referred to as an array element 40) is integrated with the receiver 50.
  • the beamformer 60 is connected again.
  • FIG. 8a to 8c are schematic structural views of the antenna device according to the present invention in different states.
  • FIG. 8a is a schematic structural view of the antenna device fixing structure of the present invention in a transport state, the plurality of support arms. 30 is closed with respect to the fixing rod 10;
  • FIG. 8b is a schematic structural view of the fixing structure of the antenna device of the present invention in an unfolded state, the plurality of supporting arms 30 are unfolded relative to the fixing rod 10;
  • FIG. 8c is a fixing structure of the antenna device of the present invention;
  • the plurality of support arms 30 are unfolded relative to the fixed rod 10 (an umbrella shape as shown in FIG. 9), and the other end of each support arm 30 is used to set the receiving antenna 40.
  • the present invention provides an antenna device, the antenna device comprising a transmitting antenna for transmitting a signal, a plurality of receiving antennas for receiving signals, the plurality of receiving antennas forming a ring antenna array, and the signal transmitted by the transmitting antenna is allowed
  • the difference between the maximum path loss and the maximum path loss allowed by the signal received by the receiving antenna is a compensation gain, and the gain is compensated by setting a certain number of receiving antennas of the plurality of receiving antennas to one sector, so that the receiving antenna
  • the propagation distance corresponding to the maximum path loss allowed by the received signal is greater than or equal to the propagation distance corresponding to the maximum path loss allowed by the signal transmitted by the transmitting antenna, thereby realizing the coverage of the signal received by the extended receiving antenna, and realizing the wireless communication system Unbalanced gain.

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  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

L'invention concerne un dispositif d'antenne, comprenant une tige de fixation, fixant le dispositif d'antenne dans une destination au moyen d'une extrémité de la tige de fixation; une antenne d'émission, disposée sur l'autre extrémité de la tige de fixation et configurée pour transmettre un signal; et une pluralité de bras de support, une extrémité de chaque bras de support étant fixée dans la tige de fixation de telle sorte que la pluralité de bras de support est disposée autour de la tige de fixation en tant que centre, et l'autre extrémité de chaque bras de support étant configurée pour recevoir une antenne. La pluralité de bras de support est dépliée ou pliée par rapport à la tige de fixation, de telle sorte que la couverture de réception d'une antenne de réception est étendue, et le gain de déséquilibre entre le signal émis par l'antenne d'émission et le signal reçu par l'antenne de réception dans un système de communication sans fil est réalisé.
PCT/CN2018/082560 2018-04-10 2018-04-10 Dispositif d'antenne WO2019196017A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/082560 WO2019196017A1 (fr) 2018-04-10 2018-04-10 Dispositif d'antenne

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/082560 WO2019196017A1 (fr) 2018-04-10 2018-04-10 Dispositif d'antenne

Publications (1)

Publication Number Publication Date
WO2019196017A1 true WO2019196017A1 (fr) 2019-10-17

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ID=68163394

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/082560 WO2019196017A1 (fr) 2018-04-10 2018-04-10 Dispositif d'antenne

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Country Link
WO (1) WO2019196017A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1391309A (zh) * 2001-06-12 2003-01-15 莫比斯菲尔有限公司 在智能天线阵列中或与其相关的改进
WO2004104627A1 (fr) * 2003-05-21 2004-12-02 Telefonaktiebolaget Lm Ericsson (Publ) Lobes de portee pouvant etre selectionnee mettant en oeuvre un reseau large bande
WO2007082335A1 (fr) * 2006-01-17 2007-07-26 Filtronic Pty Ltd Appareil de surveillance et procédé
CN102326338A (zh) * 2009-02-23 2012-01-18 诺基亚公司 用于功能受限装置的波束成形训练
US20130106667A1 (en) * 2011-10-27 2013-05-02 Massachusetts Institute Of Technology Simultaneous transmit and receive antenna system
US20170317397A1 (en) * 2016-05-02 2017-11-02 Motorola Solutions, Inc. Wireless broadband/land mobile radio antenna system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1391309A (zh) * 2001-06-12 2003-01-15 莫比斯菲尔有限公司 在智能天线阵列中或与其相关的改进
WO2004104627A1 (fr) * 2003-05-21 2004-12-02 Telefonaktiebolaget Lm Ericsson (Publ) Lobes de portee pouvant etre selectionnee mettant en oeuvre un reseau large bande
WO2007082335A1 (fr) * 2006-01-17 2007-07-26 Filtronic Pty Ltd Appareil de surveillance et procédé
CN102326338A (zh) * 2009-02-23 2012-01-18 诺基亚公司 用于功能受限装置的波束成形训练
US20130106667A1 (en) * 2011-10-27 2013-05-02 Massachusetts Institute Of Technology Simultaneous transmit and receive antenna system
US20170317397A1 (en) * 2016-05-02 2017-11-02 Motorola Solutions, Inc. Wireless broadband/land mobile radio antenna system

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