EP1964206B1 - Variable beam controlling antenna for a mobile communication base station - Google Patents

Variable beam controlling antenna for a mobile communication base station Download PDF

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Publication number
EP1964206B1
EP1964206B1 EP06732817A EP06732817A EP1964206B1 EP 1964206 B1 EP1964206 B1 EP 1964206B1 EP 06732817 A EP06732817 A EP 06732817A EP 06732817 A EP06732817 A EP 06732817A EP 1964206 B1 EP1964206 B1 EP 1964206B1
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EP
European Patent Office
Prior art keywords
antenna
radiator
reflector
gear
force
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.)
Active
Application number
EP06732817A
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German (de)
English (en)
French (fr)
Other versions
EP1964206A4 (en
EP1964206A1 (en
Inventor
Duk-Yong C/O KMW INC. KIM
Young-Chan C/O KMW INC. MOON
Sung-Hwan C/O KMW INC. SO
In-Ho C/O KMW INC. KIM
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KMW Inc
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KMW Inc
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Publication date
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Publication of EP1964206A1 publication Critical patent/EP1964206A1/en
Publication of EP1964206A4 publication Critical patent/EP1964206A4/en
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Publication of EP1964206B1 publication Critical patent/EP1964206B1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/28—Scaffolds primarily resting on the ground designed to provide support only at a low height
    • E04G1/32—Other free-standing supports, e.g. using trestles
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/32—Safety or protective measures for persons during the construction of buildings
    • E04G21/3204—Safety or protective measures for persons during the construction of buildings against falling down
    • E04G21/3252—Protections, e.g. cover, caps, against impaling on starter reinforcement bars
    • 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
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
    • H01Q3/04—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
    • H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
    • H01Q3/36—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means with variable phase-shifters

Definitions

  • the present invention relates generally to an antenna in a mobile communication base station, and in particular, to a variable beam controlling antenna configured to control the horizontal beam width of the antenna and horizontal steering as well.
  • This vertical variable down-tilting antenna adjusts phase at a vertical array by use of a phase shifter, thereby controlling an antenna beam vertically in accordance with the overage of a cell site.
  • the mechanical beam control scheme is favorable in antenna size and cost and has the electrical advantage of not causing horizontal side lobe, it is used widely.
  • the vertical beam control scheme is done by a separate operation and thus it is applicable to both vertical tilting and horizontal steering.
  • horizontal beam width is changed in three ways.
  • Another way to change horizontal beam width is a typical antenna technique in which a three or more-column antenna is horizontally implemented so that the antenna beam width is changed through control of the distribution ratio and phase of each column.
  • An example of this technique is found in a Korean Patent Application No. 2003-7000418 entitled “Cellular Antenna” and filed by "Andrew Corporation”. This method is not viable for commercialization in a mobile communication base station.
  • an object of the present invention is to provide a one-column antenna configured to control horizontal beam width.
  • Another object of the present invention is to provide a variable beam controlling antenna in a mobile communication base station, which is a one-column antenna configured to control horizontal beam width and thus to be suitable for high function, low cost and network optimization.
  • a further object of the present invention is to provide a variable beam controlling antenna in a mobile communication base station, which is a one-column antenna configured to control horizontal beam width and horizontal steering.
  • a variable beam controlling antenna for a mobile communication base station.
  • at least two radiator portions are arranged in sequence vertically to have the same rotational center, each having a reflector with at least one radiator installed therein.
  • At least one force generator provides rotational force, controlled by an external control signal, and a force transfer portion transfers the rotational force generated from the force generator to at least one reflector and thus rotates the at least one reflector.
  • the antenna is adapted to control the horizontal width of a bean of said antenna by said external control signal.
  • the antenna further includes a second force generator for providing rotational force to rotate the entire radiator portions, and a second force transfer portion for transferring the rotational force generated from the second force generator to the radiators and thus rotating the entire radiators.
  • FIG. 1 is a schematic view of a variable beam controlling antenna installed in a mobile communication base station according to an embodiment of the present invention and FIG. 2 schematically illustrates an example of the rotational positions of reflectors in the antenna illustrated in FIG. 1 .
  • an antenna for changing horizontal beam width is of a one-column antenna structure. It has three separate radiator portions in a vertical direction. That is, a first radiator portion 10, a second radiator portion 20, and a third radiator portion 20 are separately configured.
  • Each radiator portion is configured to have a reflector with antenna devices including at least one radiator appropriately arranged therein in order to receive and transmit radio signals for mobile communications.
  • the first radiator portion 10 is provided with a first reflector 11 including first, second and third radiators 111, 112 and 113.
  • the second radiator portion 20 is provided with a second reflector 21 including fourth, fifth and sixth radiators 211, 212 and 213.
  • the third radiator portion 30 is provided with a third reflector 31 including seventh, eighth and ninth radiators 311, 312 and 313.
  • the first, second and third reflectors 11, 21 and 31 are configured to rotate upon the same rotational center in the first, second and third radiator portions 10, 20 and 30. Or they can be configured to rotate upon different rotational centers, more or less out, of the common rotational center.
  • First, second and third force generators 13, 23 and 33 are provided to generate rotational force to the first, second and third reflectors 11, 21, and 31 in response to an external control signal. They can be motors.
  • First, second and third force transfer portions 12, 22 and 32 are provided to transfer rotational force generated from the first, second and third force generators 13, 23 and 33 to the first, second and third reflectors 11, 21 and 31 and thus rotate them.
  • the first, second and third force transfer portions 12, 22 and 32 are configured to include a plurality of gears, a shaft and a bearing.
  • the external control signal that controls the operation of the first, second and third force generators 13, 23 and 33 can be provided by cable or wirelessly from a source, that is, from near to the antenna, a base station body (not shown), or a base station controller.
  • an appropriate control signal is applied to the first, second and third force generators 13, 23 and 33, to thereby rotate the first, second and third reflectors 11, 21 and 31 to an appropriate degree.
  • the first, second and third radiator portions 10, 20 and 30 are contained in one radome 50 serving as a housing, which is sealed with upper and lower caps (not shown).
  • the radome 50 makes the first, second and third radiator portions 10, 20 and 30 collectively look a single antenna.
  • FIG. 3 is a schematic view of a variable beam controlling antenna installed in a mobile communication base station according to another embodiment of the present invention.
  • the antenna is identical to the antenna illustrated in FIG. 1 in configuration and principle. While the radiators in the first, second and third reflectors 11, 21 and 31 are of a one-column array structure in the antenna of FIG. 1 , radiators are arranged in two columns in reflectors in the second embodiment of the present invention illustrated in FIG. 3 .
  • FIG. 4 is an exemplary view of the results of a beam width control simulation of the antenna illustrated in FIG. 1
  • FIG. 5 is an exemplary view of the results of a beam width control simulation of the antenna illustrated in FIG. 3 .
  • Table 1 and Table 2 the simulation results shown in FIGs. 4 and 5 are summarized in Table 1 and Table 2 below.
  • (Table 1) Beam width 65 90 120 Radiator direction 0 ⁇ 41 ⁇ 54
  • (Table 2) Beam width 33 45 65 90 Radiator direction 0 ⁇ 24 ⁇ 30 ⁇ 36
  • variable beam controlling antenna for a mobile communication base station can variably control the horizontal beam width by appropriate control of the mutual rotational directions of the first, second and third radiator portions 10, 20 and 30 arranged vertically in one column, and can form a beam with less ripples in the forward direction of the antenna.
  • first, second and third radiator portions 10, 20 and 30 are provided with their respective first, second and third force generators 13, 23 and 33 to rotate the first, second and third reflectors 11, 21 and 31, it can be further contemplated that the first, second and third reflectors 11, 21 and 31 are partially or wholly rotated by use of a single force generator and a force transfer portion with a plurality of gears and a gear shaft for transferring force generated from the force generator to the first, second and third radiator portions 10, 20 and 30 partially or wholly.
  • FIGs. 6A , 6B and 6C are perspective views illustrating an important portion of a variable beam controlling antenna in a mobile communication base station according to a third embodiment of the present invention.
  • FIG. 6A illustrates the rear of the important portion of the antenna viewed from the upper left
  • FIG. 6B illustrates the rear of the important portion of the antenna viewed from the lower right
  • FIG. 6C illustrates the rear of the important portion of the antenna viewed from a lower height than from the upper left.
  • a force generator is not shown.
  • FIG. 7 is a partially enlarged perspective view of the bottom of a second radiator in the important portion of the antenna illustrated in FIGs. 6A , 6B and 6C , equivalent to a view of the front of the important portion of the antenna from the upper left.
  • this antenna has three vertical separate radiator portions and first, second and third reflectors 11', 21' and 31' vertically arranged so as to the same rotational center.
  • the first, second and third reflectors 11', 21' and 31' may not have the same rotational center.
  • the second reflector 21' is fixed to a radome (not shown) by fixing guides 440a and 440b of FIG. 7 and the first and third reflectors 11' and 31' are rotatably installed.
  • a force generator 33' including a motor is installed under the third reflector 31' and the rotational shaft of the motor is connected to the third reflector 31' by a gear so that the third reflector 31' is rotated along with the rotation of the motor.
  • the first reflector 11' is configured to rotate in the opposite direction with conjunction of the rotation of the third reflector 31' through a force transfer portion with a plurality of gears and a gear shaft.
  • First to fifth gears 411 to 415 and a gear shaft 416 collectively form the force transfer portion.
  • the first gear is attached to an upper end portion of the third reflector 31' so that it can rotate along with the rotation of the third reflector 31'.
  • the second gear 412 is installed to rotate in engagement with the first gear 411 and the third gear 413 is installed to rotate in engagement with the second gear 412.
  • the fifth gear 415 is attached to a lower end portion of the first reflector 11' so that the first reflector 11' can rotate along with the rotation of the fifth gear 415.
  • the second gear 414 is installed to rotate in engagement with the fifth gear 415.
  • the third gear 413 is connected to the fourth gear 414 by the gear shaft 416.
  • this gear shaft 416 rotates, thereby in turn rotating the fourth gear 414.
  • the first and third reflectors 11' and 31' interwork with each other with respect to the second reflector 21' and thus rotate in the opposite directions.
  • the horizontal beam width can be variably controlled.
  • support rods 430 are provided at appropriate positions to firmly support the second reflector 21'.
  • FIGs. 8A and 8B are exemplary views of an antenna modified from the antenna illustrated in FIGs. 6A and 6B .
  • FIG 8A illustrates the rear of an important portion of the antenna viewed from the upper left
  • FIG. 8B illustrates the rear of the important portion of the antenna viewed from the lower right.
  • this antenna is almost the same in configuration as the antenna of the third embodiment. It has a second force generator 53 with a motor (not shown) for rotating the entire first, second and third reflectors 11', 21' and 31' to control horizontal steering as well as a horizontal beam width, and a second force transfer portion 52.
  • the second force generator 53 operates in response to an external control signal. It is provided with a motor for rotating the entire first, second and third reflectors 11', 21' and 31'.
  • the second force transfer portion 52 is provided to a lower portion of a fixed frame of the force generator 33'.
  • the rotational shaft of the motor in the second force generator 53 is connected to the fixed frame of the force generator 33' by a gear, so that the fixed frame is rotated along with the rotation of the motor.
  • the rotation of the fixed frame in the force generator 33' leads to the rotation of the entire first, second and third reflectors 11', 21' and 31'.
  • the second reflector 21' is fixed to the radome (not shown) by the fixing guides 440a and 440b of FIG 7 in FIGs. 6A , 6B and 6C , the second reflector 21' is installed rotatably and thus not fixed to a radome in the antenna configuration shown in FIGs. 8A and 8B .
  • the first, second and third reflectors 11', 21' and 31' are wholly rotated so that the horizontal steering of the antenna can be controlled variably.
  • the antenna according to the embodiments of the present invention has three separate radiator portions, it can be further contemplated as other embodiments that it has two or four or more radiator portions.
  • This radiator configuration can be designed appropriately taking into account vertical side lobe characteristics, implementation complexity, and cost.
  • an electrical horizontal beam width changing scheme can be adopted instead, in which the horizontal beam with of the antenna is controlled by controlling the phases of signals transmitted from the radiators of the radiator portions, like an electrical horizontal steering scheme that controls horizontal steering.
  • variable beam controlling antenna for a mobile communication base station can be fabricated with low cost and allows for easy automatic optimization required for a recent mobile communication wireless network because it is configured to be a one-column antenna capable of controlling a horizontal beam width.
  • the single antenna easily changes its beam width in the present invention.
  • this one-column antenna can control horizontal steering as well as the horizontal beam width.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Aerials With Secondary Devices (AREA)
EP06732817A 2005-12-13 2006-04-05 Variable beam controlling antenna for a mobile communication base station Active EP1964206B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR20050122797 2005-12-13
KR1020060022851A KR100807321B1 (ko) 2005-12-13 2006-03-10 이동통신 기지국용 가변 빔 제어 안테나
PCT/KR2006/001256 WO2007069809A1 (en) 2005-12-13 2006-04-05 Variable beam controlling antenna in mobile communication base station

Publications (3)

Publication Number Publication Date
EP1964206A1 EP1964206A1 (en) 2008-09-03
EP1964206A4 EP1964206A4 (en) 2011-04-13
EP1964206B1 true EP1964206B1 (en) 2012-12-12

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EP06732817A Active EP1964206B1 (en) 2005-12-13 2006-04-05 Variable beam controlling antenna for a mobile communication base station

Country Status (7)

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EP (1) EP1964206B1 (zh)
JP (1) JP4728404B2 (zh)
KR (1) KR100807321B1 (zh)
CN (1) CN101331647B (zh)
BR (1) BRPI0619778A2 (zh)
ES (1) ES2399909T3 (zh)
WO (1) WO2007069809A1 (zh)

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Also Published As

Publication number Publication date
BRPI0619778A2 (pt) 2011-10-18
EP1964206A4 (en) 2011-04-13
KR20070062890A (ko) 2007-06-18
JP2009519668A (ja) 2009-05-14
CN101331647B (zh) 2013-04-17
WO2007069809A1 (en) 2007-06-21
ES2399909T3 (es) 2013-04-04
EP1964206A1 (en) 2008-09-03
JP4728404B2 (ja) 2011-07-20
KR100807321B1 (ko) 2008-02-28
CN101331647A (zh) 2008-12-24

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