KR101725233B1 - Phase shifter and communication device including the same - Google Patents
Phase shifter and communication device including the same Download PDFInfo
- Publication number
- KR101725233B1 KR101725233B1 KR1020170026560A KR20170026560A KR101725233B1 KR 101725233 B1 KR101725233 B1 KR 101725233B1 KR 1020170026560 A KR1020170026560 A KR 1020170026560A KR 20170026560 A KR20170026560 A KR 20170026560A KR 101725233 B1 KR101725233 B1 KR 101725233B1
- Authority
- KR
- South Korea
- Prior art keywords
- transmission line
- line
- coupling
- phase shifter
- region
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/18—Phase-shifters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/203—Strip line filters
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/16—Networks for phase shifting
- H03H11/20—Two-port phase shifters providing an adjustable phase shift
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The phase shifter may include a fixed line having one end connected to an input terminal to which a radio signal is input and the other end connected to one of a plurality of output terminals through which the radio signal is output and a coupling point formed between the one end and the other end, A plurality of transmission lines formed at an upper side of the line and each having an arc shape and having opposite ends connected to different output ends, and a plurality of transmission lines formed at the coupling point, And a coupling variable which couples each of the lines to vary the phase of the radio signal. Each of the plurality of transmission lines is formed with a slot extending in a direction parallel to the extending direction of the transmission line and a plurality of slits extending inward in an outward direction of the transmission line. The plurality of transmission lines include a first transmission line disposed adjacent to the fixed line and a second transmission line disposed adjacent to an outer direction of the first transmission line. The first transmission line includes a protruding line disposed in at least a portion of the first transmission line and having a shape protruding toward the second transmission line.
Description
The present invention relates to a communication device including a phase shifter and a phase shifter, and more particularly, to a phase shifter capable of adjusting the angle of a beam radiated from a base station antenna and a communication device including the phase shifter.
In a typical mobile communication system, the communication environment is variable such that the user connection density varies depending on the region or time. In order to provide an optimal service in response to various situations, the operator adjusts the beam pattern angle of the base station antenna to adjust the effective range Has coordinated network management. The so-called phase shifter is a device for adjusting the angle of the beam emitted from the base station antenna by varying the phase of the radio signal by the power distribution principle.
The beam emitted from the base station antenna can be upward tilted or down tilted by the phase shifter, and the service provider can provide the optimal service in various communication environments.
However, in the case of the conventional phase shifter, the phase of the radio signal is varied by rotating the coupling variable unit or controlling the power distribution ratio of the coupling variable unit, and the transmission line merely performs the role of power transfer. Accordingly, conventionally, there has been a problem that a deviation in loss for each band of each output terminal of the phase shifter, that is, a deviation in the power distribution ratio between the low frequency band and the high frequency band, is large. In this case, the sophistication of the phase shifter is reduced, which may degrade the performance and quality of the base station antenna. In addition, in the past, there has been a physical difficulty in changing the transmission line itself, and thus there has been a limit to expand the bandwidth capable of smooth signal transmission and reception.
SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a phase shifter that minimizes a loss variation in each output band.
It is another object of the present invention to provide a communication apparatus including a phase shifter that minimizes a loss variation of each output terminal in each band.
The phase shifter according to an embodiment of the present invention for realizing the object of the present invention has one end connected to an input terminal for inputting a radio signal and the other end connected to one of a plurality of output terminals for outputting the radio signal, A plurality of transmission lines each having an arc shape and connected to different output ends at opposite ends, and a plurality of transmission lines, each of which is formed at an upper side of the fixed line, And a coupling variable that couples the plurality of transmission lines while rotating within a set angular range to vary the phase of the radio signal. Each of the plurality of transmission lines is formed with a slot extending in a direction parallel to the extending direction of the transmission line and a plurality of slits extending inward in an outward direction of the transmission line. The plurality of transmission lines include a first transmission line disposed adjacent to the fixed line and a second transmission line disposed adjacent to an outer direction of the first transmission line. The first transmission line includes a protruding line disposed in at least a portion of the first transmission line and having a shape protruding toward the second transmission line.
In one embodiment of the present invention, the slits may include two slits spaced apart from each other by a predetermined distance in the clockwise and counterclockwise directions about the center of the transmission line.
In one embodiment of the present invention, the transmission line is divided into three regions with respect to the two slits, the first region being disposed at the center of the transmission line, the first region being disposed counterclockwise And a third region spaced clockwise with respect to the first region.
In one embodiment of the present invention, the protruding line may include a first protruding line disposed in the first area.
In one embodiment of the present invention, the protruding line may include a second protruding line disposed in the second area.
In one embodiment of the present invention, the protruding line may include a third protruding line disposed in the third region.
In one embodiment of the present invention, the protruded line may include a second protruded line disposed in the second area and a third protruded line disposed in the third area.
In an embodiment of the present invention, the coupling variable device includes a first coupling input part for feeding coupling of the first transmission line and a second coupling input part for feeding coupling of the second transmission line can do.
In one embodiment of the present invention, the coupling changer may be formed with a slot along an extending direction of the coupling changer.
In an embodiment of the present invention, the phase shifter may further include an insulating layer that is seated on the plurality of transmission lines. The coupling variable device may be seated on the insulating film.
According to an aspect of the present invention, a communication apparatus includes a base station antenna including at least one phase shifter and a plurality of radiating elements connected to the phase shifter.
In one embodiment of the present invention, the plurality of radiating elements may be formed on a front surface of the base station antenna. The phase shifter may be formed on a rear surface of the base station antenna.
According to the embodiments of the present invention, by forming a plurality of arc-shaped slots in the transmission line, it is possible to expand the operating frequency band of the base station antenna and reduce the loss variation of each output terminal of the phase shifter. Particularly, according to embodiments of the present invention, by changing the physical structure of the transmission line unlike the conventional phase shifter, it is possible to vary the impedance of the phase shifter and minimize the magnitude value difference at the output terminal.
In addition, a protruding line is formed in a partial area of the first transmission line, and the width of the transmission line is varied, so that the line loss and the impedance change can be facilitated.
1 is a plan view showing a phase shifter according to an embodiment of the present invention.
2 is a plan view showing a first transmission line according to an embodiment of the present invention.
3 is a top plan view of a coupling variable according to one embodiment of the present invention.
4 is a plan view showing a first transmission line according to an embodiment of the present invention.
5 is a plan view showing a first transmission line according to an embodiment of the present invention.
6 is a plan view showing a first transmission line according to an embodiment of the present invention.
7 is a diagram illustrating a process of rotating a coupling variable gear of a phase shifter according to an embodiment of the present invention.
8 is a perspective view illustrating a communication device and a base station antenna according to an embodiment of the present invention.
9 is a perspective view illustrating a phase displacement module according to an embodiment of the present invention.
10 is an exploded perspective view illustrating a phase displacement module according to an embodiment of the present invention.
11 is a side view of a phase displacement module according to an embodiment of the present invention.
12 is a graph showing loss deviations of respective output terminals of a conventional phase shifter.
13 is a graph illustrating loss deviations of respective output terminals of a phase shifter according to an embodiment of the present invention.
While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms.
The terms are used only for the purpose of distinguishing one component from another. The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.
In the present application, the term "comprises" or "comprising ", etc. is intended to specify that there is a stated feature, figure, step, operation, component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, or combinations thereof.
Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.
Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the drawings.
1 is a plan view showing a phase shifter according to an embodiment of the present invention. 2 is a plan view showing a slot according to an embodiment of the present invention. 3 is a top plan view of a coupling variable according to one embodiment of the present invention.
It is assumed that the base station antenna has five radiating elements and that the
1 to 3, a
One end of the fixed
A
The
The
A plurality of arc-shaped
Also, the
The
In addition, a plurality of
In the present embodiment, the
The
The protruding line may include a first
The
The
Also, as shown in FIG. 3, the
The
Although not shown in the drawings, an insulating film (not shown) may be formed on each of the
The
As described above, according to the embodiments of the present invention, by forming a plurality of arc-shaped slots in the
4 is a plan view showing a first transmission line according to an embodiment of the present invention.
The slot according to the present embodiment is substantially the same as the first transmission line described with reference to Figs. 1 and 2 except for the second
Referring to FIG. 4, the
The protruding line may include a second protruded
5 is a plan view showing a first transmission line according to an embodiment of the present invention.
The slot according to the present embodiment is substantially the same as the first transmission line described with reference to Figs. 1 and 2 except for the second
Referring to FIG. 5, the
In addition, the protruding line may include a second
6 is a plan view showing a first transmission line according to an embodiment of the present invention.
The slot according to the present embodiment is substantially the same as the first transmission line described with reference to Figs. 1 and 2 except for the third
Referring to FIG. 6, the
In addition, the protruding line may include a third
FIG. 7 is a diagram illustrating a process in which the
Referring to FIG. 7, the
At this time, the width of the
So that the operating frequency band of the base station antenna can be finely adjusted.
8 to 11 are diagrams for explaining a
8 is a perspective view illustrating a communication device and a base station antenna according to an embodiment of the present invention. 9 is a perspective view illustrating a phase displacement module according to an embodiment of the present invention. 10 is an exploded perspective view illustrating a phase displacement module according to an embodiment of the present invention. 11 is a side view of a phase displacement module according to an embodiment of the present invention.
Referring to FIG. 8, the
9 to 11 are formed on the rear surface of the
The
9 to 11, the area of the second phase shifter 200 (or the substrate area of the second phase shifter 200) may be larger than the area of the first phase shifter 100 (The substrate area of the first phase shifter 100). In this case, the convenience of the operator in the manufacturing process or handling of the
The
Meanwhile, the
The
The
The
The fixing
As described above, according to the embodiments of the present invention, the
12 is a graph showing loss deviations of respective output terminals of a conventional phase shifter. 12 shows loss deviations of the third and fifth output terminals of the conventional phase shifter.
Referring to FIG. 12, the resultant values of the third output terminal and the fifth output terminal are -3.87, respectively. It can be seen that a deviation in loss between the low frequency band and the high frequency band, that is, a deviation in the power division ratio between the high frequency band and the low frequency band, is large.
13 is a graph illustrating loss deviations of respective output terminals of a phase shifter according to an embodiment of the present invention. FIG. 13 shows loss deviations of the
Referring to FIG. 13, the resultant values of the third output terminal and the fifth output terminal are -3.68, respectively. It can be seen that the deviation of the loss between the low frequency band and the high frequency band, that is, the deviation of the power division ratio between the high frequency band and the low frequency band, is greatly improved as compared with FIG.
According to the embodiments of the present invention, by forming a plurality of arc-shaped slots in the transmission line, it is possible to expand the operating frequency band of the base station antenna and reduce the loss variation of each output terminal of the phase shifter. Particularly, according to embodiments of the present invention, by changing the physical structure of the transmission line unlike the conventional phase shifter, it is possible to vary the impedance of the phase shifter and minimize the magnitude value difference at the output terminal.
In addition, a protruding line is formed in a partial area of the first transmission line, and the width of the transmission line is varied, so that the line loss and the impedance change can be facilitated.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be understood.
100, 200: phase shifter 102: fixed line
102a: Coupling point 102b: Insertion hole
104: first transmission line 106: second transmission line
110: substrate 120: coupling variable
120a: feed
120c: second
130:
140b:
162: input stage 164: first output stage
166: second output stage 168: third output stage
170: fourth output stage 172: fifth output stage
210: first protruding line 230: second protruding line
240: third protruding line 300: base station antenna
302: first radiating element 304: second radiating element
306: Third radiating element 308: Fourth radiating element
310: fifth radiating element 400: phase shifting module
402: first gear 404: rod,
406: second gear 408:
410:
412: Fixing member 500: Communication device
Claims (12)
A plurality of transmission lines spaced from each other above the fixed line and formed in an arc shape and having opposite ends connected to different output ends; And
And a coupling variable that is formed at the coupling point, and couples the plurality of transmission lines while rotating within a predetermined angle range to vary the phase of the radio signal,
Wherein each of the plurality of transmission lines includes:
A slot extending in a direction parallel to the extending direction of the transmission line and a plurality of slits extending inward in the outward direction of the transmission line are formed,
Wherein the plurality of transmission lines include:
A first transmission line disposed adjacent to the fixed line; And
And a second transmission line disposed adjacent to the outside of the first transmission line,
The first transmission line includes:
And a protruding line disposed on at least a part of the first transmission line and having a shape protruding in the direction of the second transmission line.
And two slits spaced apart from each other by a predetermined distance in the clockwise direction and the counterclockwise direction around the center of the transmission line.
The transmission line is divided into three regions based on the two slits,
A first region disposed in the center of the transmission line;
A second region spaced from the first region in a counterclockwise direction; And
And a third region spaced clockwise with respect to the first region.
And a first protruding line disposed in the first region.
And a second protruding line disposed in the second region.
And a third protruding line disposed in the third region.
A second protruding line disposed in the second region; And
And a third protruding line disposed in the third region.
Wherein the coupling variable comprises a first coupling input for feeding coupling of the first transmission line and a second coupling input for feeding coupling of the second transmission line.
Wherein the coupling variable device is formed with a slot along an extending direction of the coupling variable device.
Further comprising an insulating film that is seated on the plurality of transmission lines,
And the coupling variable device is seated on the insulating film.
And a base station antenna having a plurality of radiating elements connected to the phase shifter.
Wherein the plurality of radiating elements are formed on a front surface of the base station antenna,
Wherein the phase shifter is formed on a rear surface of the base station antenna.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020170026560A KR101725233B1 (en) | 2017-02-28 | 2017-02-28 | Phase shifter and communication device including the same |
PCT/KR2018/002365 WO2018159973A1 (en) | 2017-02-28 | 2018-02-27 | Phase shifter and communication device comprising same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020170026560A KR101725233B1 (en) | 2017-02-28 | 2017-02-28 | Phase shifter and communication device including the same |
Publications (1)
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KR101725233B1 true KR101725233B1 (en) | 2017-04-12 |
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Family Applications (1)
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KR1020170026560A KR101725233B1 (en) | 2017-02-28 | 2017-02-28 | Phase shifter and communication device including the same |
Country Status (2)
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KR (1) | KR101725233B1 (en) |
WO (1) | WO2018159973A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN113972493A (en) * | 2020-07-24 | 2022-01-25 | 康普技术有限责任公司 | Phase shifter, electric tuning system and base station antenna |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20050008882A (en) * | 2003-07-14 | 2005-01-24 | 주식회사 에이스테크놀로지 | Phase Shifter Having Power Dividing Function |
KR20100045751A (en) | 2008-10-24 | 2010-05-04 | 한국전자통신연구원 | Phase shifter and control method thereof |
KR101017672B1 (en) * | 2008-06-26 | 2011-02-25 | 주식회사 에이스테크놀로지 | Phase shifter |
JP2013239794A (en) * | 2012-05-11 | 2013-11-28 | Hitachi Cable Ltd | Phase shifter |
KR20150088530A (en) * | 2014-01-24 | 2015-08-03 | 주식회사 감마누 | High frequency phase-shifter capable of shielding radiation |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101047321B1 (en) * | 2008-04-24 | 2011-07-07 | 주식회사 에이스테크놀로지 | Phase shifter having a structure in which the rotating member and the guide member are coupled |
-
2017
- 2017-02-28 KR KR1020170026560A patent/KR101725233B1/en active IP Right Grant
-
2018
- 2018-02-27 WO PCT/KR2018/002365 patent/WO2018159973A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20050008882A (en) * | 2003-07-14 | 2005-01-24 | 주식회사 에이스테크놀로지 | Phase Shifter Having Power Dividing Function |
KR101017672B1 (en) * | 2008-06-26 | 2011-02-25 | 주식회사 에이스테크놀로지 | Phase shifter |
KR20100045751A (en) | 2008-10-24 | 2010-05-04 | 한국전자통신연구원 | Phase shifter and control method thereof |
JP2013239794A (en) * | 2012-05-11 | 2013-11-28 | Hitachi Cable Ltd | Phase shifter |
KR20150088530A (en) * | 2014-01-24 | 2015-08-03 | 주식회사 감마누 | High frequency phase-shifter capable of shielding radiation |
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WO2018159973A1 (en) | 2018-09-07 |
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