KR101415540B1 - Antenna device capable of variable tilt by band - Google Patents

Antenna device capable of variable tilt by band Download PDF

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Publication number
KR101415540B1
KR101415540B1 KR1020140040484A KR20140040484A KR101415540B1 KR 101415540 B1 KR101415540 B1 KR 101415540B1 KR 1020140040484 A KR1020140040484 A KR 1020140040484A KR 20140040484 A KR20140040484 A KR 20140040484A KR 101415540 B1 KR101415540 B1 KR 101415540B1
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KR
South Korea
Prior art keywords
antenna
band
duplexer
low frequency
shifters
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KR1020140040484A
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Korean (ko)
Inventor
김용재
최종인
최환기
진수민
Original Assignee
주식회사 선우커뮤니케이션
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Priority to KR1020140040484A priority Critical patent/KR101415540B1/en
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Publication of KR101415540B1 publication Critical patent/KR101415540B1/en

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    • 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
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
    • 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

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

Abstract

The present invention relates to a variable tilt antenna device by each band. The antenna device includes a common antenna, a phase shifter for each band; a first duplexer corresponding to each shifter from input and output ports; and a second duplexer corresponding to each device from each shifter. The antenna additionally includes a low frequency device which only can access the low frequency band shifters among the shifters on the outside of an end device of an array. The present invention enables a more compact antenna device design and removes the service shadow areas regarding the low frequency band.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a variable-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna device used in a base station for mobile communication, and more particularly to a so-called variable-tilt antenna device designed to adjust beam tilt for each band in an adjacent frequency band.

For example, in the antenna system disclosed in Japanese Patent Application Laid-Open Nos. 2006-12625 and 2000-10139, one displacement device is shared so that a beam tilt is generated in a plurality of frequency bands There is a problem that characteristics or demands of each band are not taken into account in beam tilting.

Therefore, an antenna device capable of independently varying the beam tilt for each frequency band is required. As an example suggested by this need, there is an antenna system disclosed in Japanese Patent Application Laid-Open No. 2006-12625.

1 schematically shows an antenna system disclosed in Japanese Patent Application Laid-Open No. 2006-12625 for convenience. This system 1 is an apparatus for transmitting and receiving two frequency bands, and includes an array element 2e for a first frequency band A second antenna 3 including an array element 3e for a second frequency band, a first antenna 2 and a second antenna 3e of the first antenna 2 and the second antenna 3, And two phase shifters (4, 5) for phase-controlling signals of corresponding frequency bands, respectively.

The system arranges the respective elements 2e and 3e of the first antenna 2 and the second antenna 3 for each band in a row and outputs the signals to the respective displacers 4 and 5 corresponding to the antennas 2 and 3 As a method of controlling the phase, the beam tilt of each of the antennas 2 and 3 can be varied independently or individually.

However, the system 1 includes dedicated antennas 2 and 3 and array elements 2e and 3e for each frequency band. In short, the system 1 is equipped with two dedicated antenna devices, 1) The size of the scale is bound to increase considerably. This makes the fabrication and installation of the antenna device or the system complicated and economically very disadvantageous.

Accordingly, an antenna device capable of beam tilt by each band is required in one antenna device, and an example thereof is a phased array antenna disclosed in Japanese Patent Application Laid-Open No. 2006-4928. In an apparatus having such a function, an element array, a phase shifter, a duplexer, or the like is usually used. By appropriately arranging these elements, it is possible to perform beam tilt for each band in one antenna apparatus.

However, there is a problem in that the number of elements used in such an antenna apparatus is large, and in particular, there is a problem in that no measures are taken against different beam characteristics for each band.

2, the beam width 4G of the relatively low frequency band is larger than the beam width 3G of the high frequency band in the implemented beam tilting, so that the gain is somewhat lowered. In this case, the service shadow area S due to the beam width 4G of the low frequency band between each base station or the antenna device 6 appears. As a countermeasure against this problem, it is possible to make the interval between the mobile communication base stations more compact. However, in this case, it is natural that the establishment and management of the facility becomes complicated and difficult.

The present invention has been proposed to solve the problems of the conventional antenna apparatus or system. It is an object of the present invention to provide a method of compensating for a beam characteristic so that a service shadow region for a low frequency band does not appear particularly in a case where a beam tilt can be varied independently for each frequency band, And to provide a designed antenna device.

In the variable tilt antenna apparatus of the present invention,

1. An antenna device comprising an antenna having a plurality of frequency bands and a linear array element for transmitting and receiving in a plurality of frequency bands and a displacer provided for each frequency band and controlling a signal phase for each band,

A first duplexer provided at the input / output port side and connected to each of the transmitter and demultiplexes the transmission signal for each band and transmits the resultant signal to the respective displacer,

A plurality of second duplexers provided on the respective device sides and connected to the respective demultiplexers, for transmitting the transmission signals phase-controlled for each band in each of the demultiplexers to the device,

/ RTI >

The antenna further includes a low frequency receiving element connected to the outside of the end element of the array only to a low frequency band displayer of the transformer, and the low frequency receiving element and the adjacent end element are connected to a power distributor divider, respectively;

.

Preferably, the antenna is connected to a power divider in which an element or a part thereof is provided between the input / output port and the first duplexer, excluding both terminal elements of the element array, Designed to be connected to the output port.

According to the antenna apparatus of the present invention, the antenna further includes a low-frequency receiving element connected to only the low-frequency band displayer of the plurality of displacers outside the terminal element of the array. By using this low-frequency receiving element, in principle, the low-frequency band beam characteristic having a relatively wide beam width and low gain can be made similar to the beam characteristic of the high-frequency band as compared with the high frequency band. Therefore, there is an effect that the service shadow region for the low frequency band is not displayed.

Also in a preferred example, the antenna is configured such that some of its element arrays are directly connected to the input / output ports without going through a duplexer configuration. As a result, compared with the case of passing through other structures such as a duplexer, a more compact design can be achieved and power loss can be effectively reduced.

1 is a schematic block diagram of a conventional antenna system;
2 is a beam tilt characteristic diagram of a conventional antenna system.
3 is a configuration diagram of an antenna device according to the present invention.
Figure 4 is a beam tilt characteristic diagram of the Figure 3 apparatus.

The features and advantages of the present invention "band-specific variable tilt antenna device" (hereinafter referred to as "antenna device") described or not described above will become more apparent from the following description of the embodiments with reference to the accompanying drawings. 3, the antenna device according to the present invention is indicated by the reference numeral 10.

3, the antenna device 10 of the present invention comprises:

A frequency-shared antenna 11 for transmitting and receiving signals in a plurality of frequency bands, and two phase shifters 12 and 13 provided for each frequency band and controlling the phases of the transmission and reception signals band-by-band;

A first duplexer 14 connected between the antenna input / output port 16 and the displacers 12 and 13; a plurality of first duplexers 14 connected between the antenna 11 and the displacers 12 and 13; And a second duplexer 15.

Specifically, the antenna 11 includes a plurality of linear array elements 11a, 11b, and 11c that transmit and receive in two frequency bands. The antenna elements 11a, 11b, and 11c are devices having broadband characteristics, and transmit and receive signals by sharing the 2.1 GHz band (3G) and the 1.8 GHz band (4G) as two frequency bands. In this embodiment, it is described that two frequency bands are used in common, but depending on the design, it is possible to share the number of the extra bands or other bands.

The shifters 12 and 13 are so-called phase shifters and are general means for varying the vertical beam tilt of the antenna 11 by controlling the phase of a signal transmitted and received by the antenna 11. In the present invention, the number of transformers 12 and 13 is equal to the number of frequency bands commonly used in the antenna device 10, and therefore, the number of the transformers 12 and 13 is two in the present embodiment. Here, the first displacer 12 is dedicated to 3G and the second displacer 13 is dedicated to 4G.

The rear end of the first displacer 12 is connected to the antenna input / output port 16 via the first duplexer 14 and the front end of the first displacer 12 is connected to each element (11a, 11b). Similarly, the rear end of the second displacer 13 is also connected to the antenna input / output port 16 side via the first duplexer 14, and the front end thereof is connected to the second duplexer 15 via the second duplexer 15 And are connected in parallel to the elements 11a and 11b.

According to this structure, the antenna apparatus of the present invention transmits the transmission signal to the side of the antenna 11 in a one-input multiple-output system on the premise, .

As shown in the drawing, in the present embodiment, the antenna 11 is formed such that the element 11c in the middle portion excluding the two end elements 11a and 11b of the array elements 11a, 11b, and 11c is connected to the port 16 Output port 16 without being connected to the power distributor 17 provided between the first duplexer 14 and the first duplexer 14 and bypassing the other elements of the displacer 12 or 13 or the first duplexer 14. [ Respectively.

This design is based on the fact that power is supplied most to the middle part of the array antenna which is a reference ('0') of the phase variable in the array antenna, and there is no need to change the phase in particular, and a stator or duplexer It is possible to realize a compact implementation by eliminating the power consumption and to significantly reduce the loss of electric power supplied to the device in the middle part in the implementation.

The first duplexer 14 is provided as one unit and is disposed between the antenna input / output port 16 and the two displacers 12 and 13. [ Specifically, the first duplexer 14 is connected to the input / output port 16 provided at the rear end of the first duplexer 14, and the front end of the first duplexer 14 is connected to the sides of the respective switches 12 and 13 in parallel. And separates the input signal into 3G and 4G signals and transmits them to each dedicated converter 12 or 13.

This configuration enables substantial one-input and one-output in the antenna apparatus 10 during reception and transmission, so that it is not necessary to provide a separate port for each frequency band in the antenna apparatus 10. [

The second duplexer 15 is disposed between the antenna elements 11a and 11b and the displacers 12 and 13. Specifically, the second duplexer 15 is suitably provided in proportion to the necessary elements 11a and 11b and is connected to the elements 11a and 11b at the front end in a one-to-one relationship (2: 1). However, such a numerical correspondence relationship does not limit the present invention. Here, each second duplexer 15 is connected to all the displacers 12, 13 at the rear end.

In the present invention, the antenna 11 further includes a low frequency receiving element 11d connected to only the low frequency band shifter 13 of the displacer 12, 13 outside the terminal element 11a of the array. The low frequency receiving element 11d and the adjacent end elements 11a are connected to a power distributor 17 provided on the low frequency band shifter 13 side.

Generally, when the physical spacing of the antennas is the same, the beam width 4G in the low frequency band is larger than the beam width 3G in the high frequency band, and the gain is somewhat lowered. Accordingly, a service shadow area due to the beam width 4G of the low frequency band between each base station or the antenna apparatus appears (refer to FIG. 2). The present inventor has confirmed that this problem can be solved through the above-described low-frequency receiving element 11d and its arrangement, which is considered to be simple and efficient as compared with other methods and apparatuses.

The antenna device 10 of the present invention configured as described above operates in the following manner when transmitting and receiving signals.

Operation 1: Transmission

First, when a transmission signal is input from the input / output port 16 side, the first duplexer 14 receives the transmission signal, separates the transmission signal into signals for each band, and transmits them to the dedicated shifters 12 and 13. In this embodiment, this signal is separated into the 2.1 GHz band (3G) and the 1.8 GHz band (4G) and transmitted to the dedicated first and second displacers 12 and 13, respectively.

The signals of the separated bands are phase-controlled in the dedicated shifters 12 and 13. Each phase-controlled signal is signal-coupled through a second duplexer 15 connected to each of the capacitors 12 and 13. Is transmitted to each of the elements 11a and 11b of the antenna and is radiated as a radio wave. At this time, since the phase of the transmission signal is independently controlled in each of the dedicated transformers 12 and 13 in each frequency band, desired beam tilt can be obtained for each frequency band.

The element 11c of the antenna array is connected to the port 16 irrespective of the above described displacers 12 and 13 and the duplexers 14 and 15. The element 11d is connected to the low frequency band 15 regardless of the second duplexer 15. [ To the second displacer 13 for the first time. This makes it possible to compensate for the drop in gain in the low frequency band. By making the beam width and gain for each band similar for each band based on the high frequency band, it is possible to eliminate most of the service shadow region (portion A in FIG. 2) will be.

FIG. 4 illustrates a beam tilt when the antenna device 10 of the present invention is used and the transmission signal is varied for each band in the 2.1 GHz band (3G) and the 1.8 GHz band (4G). In this figure, it can be seen that the tilt can be independently controlled and varied in each frequency band in the antenna device 10 of the present invention. In particular, it can be seen that the beam width and gain for each band are in a band As shown in FIG. As described above, this beam characteristic has an effect that most of the service shadow regions in the low frequency band can be eliminated.

Action 1: Receive

Naturally, the received signal will be processed inversely to the transmitted signal. First, signals received by the antenna elements 11a-11d are separated by a second duplexer 15 connected to each of the elements 11a and 11b. Then, signals are demultiplexed by dedicated demodulators 12 and 13 for the respective frequency bands, Lt; / RTI > The separated signals of the respective bands are individually phase-controlled by the dedicated displacers 12, 13.

Each phase-controlled signal is signal-coupled through a single first duplexer 14 and then received through one port 16. Of course, the other elements 11c and 11d have different paths, but also pass through one port 16.

10. Antenna device
11. Antennas 11a-11d. device
12,13. The first duplexer
15. Second duplexer 16. Input / output port
17. Power distributor

Claims (5)

An antenna apparatus comprising an antenna (11) having a plurality of array elements (11a-11c) transmitting and receiving in a plurality of frequency bands, and a plurality of shifters (12, 13) ,
Output ports 16 and are connected to the respective shifters 12 and 13 to separate the transmission signals for each band and transmit the divided signals to the respective shifters 12 and 13 while the respective shifters 12 and 13 A first duplexer 14 for combining the phase-controlled received signals at the port 16 and transmitting the combined signals to the port 16; A plurality of transmitters, each of which is provided on each device side and is connected to each of the transmitters, for transmitting the transmit signals phase-controlled on a band-by-band basis to the respective transmitters 12 and 13, And a second duplexer 15,
The antenna 11 further includes a low frequency receiving element 11d connected to only the low frequency band shifter 13 among the shifters outside the terminal element 11a of the array and the low frequency receiving element and the adjacent end elements 11a Are respectively connected to a power divider (17) provided on the side of the low frequency band shifter (13);
Band variable antenna according to claim 1,
The method according to claim 1,
The antenna 11 comprises:
The element 11c or a part thereof is connected to the power distributor 17 provided between the port 16 and the first duplexer 14 except for both end elements 11a of the element array, , 13) or directly to the port (16) without going through the duplexer (14, 15);
Band variable antenna according to claim 1,
The method according to claim 1,
Wherein the plurality of frequency bands are 2.1 GHz band (3G) and 1.8 GHz band (4G).
delete The method according to claim 1,
Wherein the input / output port (16) is provided as a single unit and is connected to a single first duplexer (14).
KR1020140040484A 2014-04-04 2014-04-04 Antenna device capable of variable tilt by band KR101415540B1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101525911B1 (en) * 2014-12-05 2015-06-04 주식회사 선우커뮤니케이션 Wideband dual-polarization antenna device for division and alienation of frequency
KR20160047327A (en) * 2014-10-22 2016-05-02 주식회사 케이티 Antenna device capable of variable e-tilt by 3G and 4G service band
WO2016204383A1 (en) * 2015-06-15 2016-12-22 주식회사 케이엠더블유 Multi-line phase shifter of multi-band mobile communication base station antenna
KR101788837B1 (en) 2014-10-22 2017-11-15 주식회사 케이티 Antenna device capable of variable e-tilt by service band
CN107710498A (en) * 2015-06-01 2018-02-16 华为技术有限公司 One kind combination phase shifter and multifrequency antenna network system

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JP2009524223A (en) 2006-01-18 2009-06-25 イエーノプティーク レーザーダイオード ゲゼルシャフト ミット ベシュレンクテル ハフツング Carrier for vertically positioning laser diodes using stoppers
JP2010509823A (en) 2006-11-10 2010-03-25 クインテル テクノロジー リミテッド Phased array antenna system with electrical tilt control
JP2012529853A (en) 2009-06-08 2012-11-22 パワーウェーブ テクノロジーズ インコーポレーテッド Amplitude and phase compensated multi-element antenna array with adaptive predistortion for wireless networks
KR20130139337A (en) * 2011-02-11 2013-12-20 알까뗄 루슨트 Active antenna arrays

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
JP2009524223A (en) 2006-01-18 2009-06-25 イエーノプティーク レーザーダイオード ゲゼルシャフト ミット ベシュレンクテル ハフツング Carrier for vertically positioning laser diodes using stoppers
JP2010509823A (en) 2006-11-10 2010-03-25 クインテル テクノロジー リミテッド Phased array antenna system with electrical tilt control
JP2012529853A (en) 2009-06-08 2012-11-22 パワーウェーブ テクノロジーズ インコーポレーテッド Amplitude and phase compensated multi-element antenna array with adaptive predistortion for wireless networks
KR20130139337A (en) * 2011-02-11 2013-12-20 알까뗄 루슨트 Active antenna arrays

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101788837B1 (en) 2014-10-22 2017-11-15 주식회사 케이티 Antenna device capable of variable e-tilt by service band
KR20160047327A (en) * 2014-10-22 2016-05-02 주식회사 케이티 Antenna device capable of variable e-tilt by 3G and 4G service band
KR101865373B1 (en) * 2014-10-22 2018-06-07 주식회사 케이티 Antenna device capable of variable e-tilt by 3G and 4G service band
KR101525911B1 (en) * 2014-12-05 2015-06-04 주식회사 선우커뮤니케이션 Wideband dual-polarization antenna device for division and alienation of frequency
CN107710498A (en) * 2015-06-01 2018-02-16 华为技术有限公司 One kind combination phase shifter and multifrequency antenna network system
US20180108990A1 (en) 2015-06-01 2018-04-19 Huawei Technologies Co., Ltd. Combined phase shifter and multi-band antenna network system
EP3291362A4 (en) * 2015-06-01 2018-05-23 Huawei Technologies Co., Ltd. Combined phase shifter and multi-frequency antenna network system
US10498028B2 (en) 2015-06-01 2019-12-03 Huawei Technologies Co., Ltd. Combined phase shifter and multi-band antenna network system
CN107710498B (en) * 2015-06-01 2020-01-10 华为技术有限公司 Combined phase shifter and multi-frequency antenna network system
US10573964B2 (en) 2015-06-01 2020-02-25 Huawei Technologies Co., Ltd. Combined phase shifter and multi-band antenna network system
KR101703744B1 (en) 2015-06-15 2017-02-07 주식회사 케이엠더블유 Multi-line phase shifter in multi-band antenna of mobile communication base transceiver station
KR20160147390A (en) * 2015-06-15 2016-12-23 주식회사 케이엠더블유 Multi-line phase shifter in multi-band antenna of mobile communication base transceiver station
WO2016204383A1 (en) * 2015-06-15 2016-12-22 주식회사 케이엠더블유 Multi-line phase shifter of multi-band mobile communication base station antenna
US10553922B2 (en) 2015-06-15 2020-02-04 Kmw Inc. Multi-line phase shifter of multi-band mobile communication base station antenna

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