KR101725233B1 - Phase shifter and communication device including the same - Google Patents

Phase shifter and communication device including the same Download PDF

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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
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KR
South Korea
Prior art keywords
transmission line
line
coupling
phase shifter
region
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Application number
KR1020170026560A
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Korean (ko)
Inventor
성원모
이광호
박용현
Original Assignee
주식회사 이엠따블유
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Priority to KR1020170026560A priority Critical patent/KR101725233B1/en
Application granted granted Critical
Publication of KR101725233B1 publication Critical patent/KR101725233B1/en
Priority to PCT/KR2018/002365 priority patent/WO2018159973A1/en

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    • 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

[0001] PHASE SHIFTER AND COMMUNICATION DEVICE INCLUDING THE SAME [0002]

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.

Korean Patent Publication No. 10-2010-0045751 (2010.05.04)

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 phase shifter 100 has one input terminal 162 and five output terminals 164, 166, 168, 170 and 172, As shown in FIG. In this case, the first output terminal 164 is connected to the first radiating element of the base station antenna via a cable, the second output terminal 166 is connected to the second radiating element of the base station antenna via a cable, and the third output terminal 168 Is connected to the third radiating element of the base station antenna via a cable, the fourth output terminal 170 is connected to the fourth radiating element of the base station antenna through a cable, and the fifth output terminal 172 is connected to the base- And may be connected to the fifth radiating element. Hereinafter, the detailed configuration of the phase shifter 100 will be described in detail with reference to FIGS. 1, 2, and 9. FIG.

1 to 3, a phase shifter 100 according to an embodiment of the present invention includes a fixed line 102, a plurality of transmission lines 104 and 106, a substrate 110, and a coupling variable 120).

One end of the fixed line 102 is connected to an input terminal 162 through which a radio signal is input and the other end is connected to one of a plurality of output terminals, for example, a first output terminal 164 through which the radio signal is output. The fixed line 102 may be formed on the substrate 110 and may be made of a conductive material. 1, the fixed line 102 may be formed by a combination of a plurality of linear portions and curved portions, and at least one of the linear portions may have a different thickness or may extend in different directions have.

A coupling point 102a may be formed between one end of the fixed line 102 and the other end. As will be described later, the coupling adjuster 120 may be formed at the coupling point 102a and may be coupled to a plurality of transmission lines 104 (for example, , 106 can be fed by coupling. In this case, the electrical length from the current position of coupling variable 120 to the corresponding radiating element is changed, so that the phase of the radio signal can be varied. At this time, a fitting hole 102b and a feeding point 120a of a predetermined size may be formed in the coupling point 102a and the coupling changer 120, respectively, and a rotation shaft (not shown) So that the coupling variable device 120 can be rotated.

The transmission lines 104 and 106 are lines for transmitting a radio signal to an output terminal and may include, for example, a first transmission line 104 and a second transmission line 106. However, the number of transmission lines 104 and 106 is not limited to the number of transmission lines 104 and 106. The number of transmission lines 104 and 106 may be the number of output terminals 164, 166, 168, 170, and 172, And the like.

The first transmission line 104 and the second transmission line 106 may be formed on the substrate 110 and may be made of a conductive material. At this time, the first transmission line 104 and the second transmission line 106 may be spaced apart from each other on the upper side of the fixed line 102. In addition, the first transmission line 104 and the second transmission line 106 are formed in an arc shape, and both ends thereof may be connected to different output ends, respectively. The first transmission line 104 may have one end connected to the second output terminal 166 and the other end connected to the third output terminal 168. The second transmission line 106 may have one end connected to the fourth output terminal 170 and the other end thereof may be connected to the fifth output terminal 172.

A plurality of arc-shaped slots 140 may be formed in the first transmission line 104 and the second transmission line 106 along the extending direction of the transmission lines 104 and 106, respectively. The slot 140 is used to extend the operating frequency band of the base station antenna and to reduce the loss variation of each output terminal 164, 166, 168, 170 and 172 of the phase shifter 100, As shown in FIG. As shown in FIGS. 1 and 2, a plurality of slots 140 may be stacked on the transmission lines 104 and 106 at predetermined intervals in one direction. Each of the transmission lines 104 and 106 may include a first slot part 140a in which a plurality of first subslots are stacked and a second slot part 104b in which a plurality of second subslots are stacked. have. As an example, the first slot portion 140a may include three first subslots, and the second slot portion 140b may include two second subslots.

Also, the second slot 140b may be spaced apart from the first slot 140a by a predetermined distance. The number, thickness, size, length, etc. of the slots 140 for each of the transmission lines 104 and 106 shown in FIGS. 1 and 2 may vary depending on the frequency band of a signal to be transmitted / received at the base station antenna.

The slot 140 according to the present embodiment includes a first slot portion 140a in which a plurality of first subslots are laminated and a second slot portion 104b in which a plurality of second subslots are laminated, Band (1700 to 2700 Hz).

In addition, a plurality of slits 150 may be formed in at least a part of each of the transmission lines 104 and 106. The slit 150 may have a structure that extends inward from the outside of the transmission line. The slits 150 may include two slits spaced a predetermined distance in the clockwise and counterclockwise directions from the center of each of the transmission lines 104 and 106. The slit 150 is for fine adjustment of the operating frequency band of the base station antenna and may be formed in at least a part of each of the transmission lines 104 and 106. As shown in FIGS. 1 and 2, two slits 150 may be formed on the first transmission line 104 and the second transmission line 106 at a predetermined interval. At this time, the slit 150 may be formed to have a predetermined thickness while forming a predetermined angle (for example, 80 to 100 degrees) with the extending direction of the slot 140, for example. Here, the predetermined thickness may be, for example, a thickness of a plurality of slots included in the first slot portion 140a (or the second slot portion 140b) (i.e., a thickness of the plurality of slots, (I.e., a length including a separation distance between the two). In this case, the effect of reducing the loss variation of each output terminal 164, 166, 168, 170, 172 of the phase shifter 100 can be maximized.

In the present embodiment, the slit 150 has two slits. However, the present invention is not limited thereto, and the number of the slits may be various.

The first transmission line 104 may include a protruding line disposed in at least a portion of the first transmission line 104 and having a shape protruding in the direction of the second transmission line 106. The transmission lines 104 and 106 may be divided into three areas based on the two slits. The transmission lines 104 and 106 may include a first area disposed in the center of the transmission line, a second area disposed in the counterclockwise direction And a third region spaced clockwise with respect to the first region.

The protruding line may include a first protruding line 210 disposed in the first region of the first transmission line 104. The first protruding line 210 may protrude toward the second transmission line 106 by a predetermined thickness (for example, 1 mm). As a result, the impedance of the phase shifter 100 is changed, and the loss variation of each output terminal 164, 166, 168, 170 and 172 of the phase shifter 100 is reduced. Also, in this case, as the power distribution of each radiating element of the base station antenna is adjusted, the beam radiated from each radiating element can be more concentrated in a specific direction (for example, the central portion side of the base station antenna) The signal transmission / reception efficiency can be improved.

The substrate 110 is a plate on which the fixed line 102 and the transmission lines 104 and 106 are formed and may be, for example, a printed circuit board (PCB).

The coupling variable unit 120 couples and feeds the plurality of transmission lines 104 and 106 while rotating within a set angle range, thereby varying the phase of the radio signal. As described above, the coupling adjuster 120 is formed in the coupling point 102a and can rotate within the set angular range. At this time, a fitting hole 102b and a feeding point 120a of a predetermined size may be formed in the coupling point 102a and the coupling variable device 120, respectively. In the fitting hole 102b, The variable unit 120 can be rotated.

Also, as shown in FIG. 3, the coupling variable 120 may include a first coupling input 120b and a second coupling input 120c. The first coupling input portion 120b and the second coupling input portion 120c may be made of a conductive material. The first coupling input portion 120b may couple the first transmission line 104 and the second coupling input portion 120c may couple the second transmission line 106. [ The first coupling input 120b may be disposed at a position corresponding to the first transmission line 104 and the second coupling input 120c may be spaced apart from the first coupling input 120b by a predetermined distance And may be disposed at a position corresponding to the second transmission line 106. The power distribution by the first coupling input unit 120b and the second coupling input unit 120c has an effect that the operating frequency band of the base station antenna is increased as compared with power distribution by one coupling input unit.

The coupling variable device 120 may be formed on the upper side of the phase shifter 100, that is, toward the first transmission line 104 and the second transmission line 106, A slot 120d may be formed along the extending direction of the coupling variable unit 120. [ The slot 120d extends the operating frequency band of the base station antenna.

Although not shown in the drawings, an insulating film (not shown) may be formed on each of the transmission lines 104 and 106, and the coupling variable device 120 may be mounted on the insulating film. Therefore, the transmission line 104, 106 can be prevented from being short-circuited due to the coupling variable device 120, and the phase displacement caused by the rotation of the coupling device 120 can be prevented from being delayed. The insulating layer plays a role of preventing spurious waves in PIMD (Passive Intermodulation Distortion) performance.

The ground hole 130 is a structure for maximizing the grounding of the cable connected to the input terminal 162 and each output terminal 164, 166, 168, 170 and 172, The power of the radio signal can be stably transmitted to each of the transmission lines 104 and 106.

As described above, according to the embodiments of the present invention, by forming a plurality of arc-shaped slots in the transmission lines 104 and 106, the operating frequency band of the base station antenna is extended and the output terminals 164 of the phase shifter 100 , 166, 168, 170, 172) can be reduced. Particularly, according to embodiments of the present invention, by changing the physical structure of the transmission lines 104 and 106 unlike the conventional phase shifter, the impedance of the phase shifter 100 can be varied and output terminals 164, 166, 168, 170, and 172 can be minimized.

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 protruding line 230 and the third protruding line 240. Therefore, the same components are denoted by the same reference numerals, and a repetitive description will be omitted.

Referring to FIG. 4, the first transmission line 104 may include a protruding line disposed in at least a part of the first transmission line 104 and having a shape protruding in the direction of the second transmission line 106 have. The first transmission line 104 may be divided into three regions with respect to the two slits. The first transmission line 104 may include a first region disposed in the center of the first transmission line 104, a first region disposed in the middle of the first transmission line 104, A second region spaced clockwise and a third region spaced clockwise from the first region.

The protruding line may include a second protruded line 230 and a third protruded line 240 disposed in the second region and the third region of the first transmission line 104, respectively. The second protruded line 230 and the third protruded line 240 may protrude toward the second transmission line 106 by a predetermined thickness (for example, 1 mm). As a result, the impedance of the phase shifter 100 is changed, and the loss variation of each output terminal 164, 166, 168, 170 and 172 of the phase shifter 100 is reduced. Also, in this case, as the power distribution of each radiating element of the base station antenna is adjusted, the beam radiated from each radiating element can be more concentrated in a specific direction (for example, the central portion side of the base station antenna) The signal transmission / reception efficiency can be improved.

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 protruding line 230. Therefore, the same components are denoted by the same reference numerals, and a repetitive description will be omitted.

Referring to FIG. 5, the first transmission line 104 may include a protruding line disposed in at least a portion of the first transmission line 104 and having a shape protruding toward the second transmission line 106 have. The first transmission line 104 may be divided into three regions with respect to the two slits. The first transmission line 104 may include a first region disposed in the center of the first transmission line 104, a first region disposed in the middle of the first transmission line 104, A second region spaced clockwise and a third region spaced clockwise from the first region.

In addition, the protruding line may include a second protruding line 230 disposed in the second region of the first transmission line 104. The second protruding line 230 may protrude from the second transmission line 106 by a predetermined thickness (for example, 1 mm). As a result, the impedance of the phase shifter 100 is changed, and the loss variation of each output terminal 164, 166, 168, 170 and 172 of the phase shifter 100 is reduced. Also, in this case, as the power distribution of each radiating element of the base station antenna is adjusted, the beam radiated from each radiating element can be more concentrated in a specific direction (for example, the central portion side of the base station antenna) The signal transmission / reception efficiency can be improved.

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 protruding line 240. Fig. Therefore, the same components are denoted by the same reference numerals, and a repetitive description will be omitted.

Referring to FIG. 6, the first transmission line 104 may include a protruding line disposed in at least a portion of the first transmission line 104 and having a shape protruding toward the second transmission line 106 have. The first transmission line 104 may be divided into three regions with respect to the two slits. The first transmission line 104 may include a first region disposed in the center of the first transmission line 104, a first region disposed in the middle of the first transmission line 104, A second region spaced clockwise and a third region spaced clockwise from the first region.

In addition, the protruding line may include a third protruding line 240 disposed in the third region of the first transmission line 104. The third protruding line 240 may protrude toward the second transmission line 106 by a predetermined thickness (for example, 1 mm). As a result, the impedance of the phase shifter 100 is changed, and the loss variation of each output terminal 164, 166, 168, 170 and 172 of the phase shifter 100 is reduced. Also, in this case, as the power distribution of each radiating element of the base station antenna is adjusted, the beam radiated from each radiating element can be more concentrated in a specific direction (for example, the central portion side of the base station antenna) The signal transmission / reception efficiency can be improved.

FIG. 7 is a diagram illustrating a process in which the coupling variable device 120 of the phase shifter 100 is rotated according to an embodiment of the present invention. As described above, the coupling variable device 120 can couple the transmission lines 104 and 106 to each other while rotating within a predetermined angle range, thereby varying the phase of the radio signal.

Referring to FIG. 7, the coupling variable device 120 is rotated clockwise (the coupling variable device 120 of FIG. 6) in a state of being disposed at the reference position (middle position of the coupling device 120 of FIG. 10) ) Or counterclockwise (to the left of the coupling adjuster 120 of FIG. 6). If the coupling changer 120 rotates clockwise, the beam emitted from the base station antenna may be tilted downward (e.g., beam angle: 0 degrees → 10 degrees → 20 degrees → 30 degrees → 40 degrees .. And the beam emitted from the base station antenna is tilted upward (for example, beam angle: 40 degrees? 30 degrees? 20 degrees? 10 degrees? 0 degrees) when the coupling adjuster 120 rotates counterclockwise ...).

At this time, the width of the first transmission line 104 which overlaps with the rotation angle of the coupling variable device 120 may be varied. For example, when the coupling variable device 120 is positioned at the center of the first transmission line 104, the first transmission line 210 is overlapped with the first transmission line 210, And overlaps with the line 104. The frequency can be changed according to the width of the transmission line. Therefore, in the present embodiment, the width of the first transmission line 104 is formed differently for each region by the first projected line 210, thereby changing the line width and facilitating the change of the line loss and the impedance. have.

So that the operating frequency band of the base station antenna can be finely adjusted.

8 to 11 are diagrams for explaining a communication apparatus 500 according to an embodiment of the present invention. The communication device 500 according to an exemplary embodiment of the present invention includes a base station antenna 300 and a phase displacement module 400.

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 base station antenna 300 may include a plurality of radiating elements 302, 304, 306, 308, 310. Each radiating element 302, 304, 306, 308, (Not shown). Here, for convenience of explanation, the base station antenna 300 has been described as having five radiating elements 302, 304, 306, 308 and 310, but this is merely an example and the radiating elements 302, 304, 306, 308, 310 may be more or less than this number.

9 to 11 are formed on the rear surface of the base station antenna 300 and include a plurality of phase shifters 100 and 200, a first gear 402, rod). A second gear 406, a support member 410, and a fixing member 412. [

The phase shifters 100 and 200 perform the same function as the phase shifter shown in Figs. 1 to 7. The phase shifting module 400 may include a first phase shifter 100 and a second phase shifter 200. In this case, Performance can be improved. The first phase shifter 100 and the second phase shifter 200 may be disposed parallel to each other and may be connected to the plurality of radiating elements 302, 304, 306, 308, and 310. Specifically, the first phase shifter 100 and the first output end 164 of the second phase shifter 200 are connected to the first radiating element 302 of the base station antenna 300 through a cable (not shown) The first phase shifter 100 and the second output 166 of the second phase shifter 200 are connected via cable to the second radiating element 304 of the base station antenna 300 and the first phase The transformer 100 and the third output 168 of the second phase shifter 200 are connected to the third radiating element 306 of the base station antenna 300 via a cable, And the fourth output terminal 170 of the second phase shifter 200 are connected to the fourth radiating element 308 of the base station antenna 300 via a cable and are connected to the first phase shifter 100 and the second phase shifter 200. [ The fifth output 172 of the crisis 200 may be connected to the fifth radiating element 310 of the base station antenna 300 via a cable. At this time, the phase shifters 100 and 200 can adjust the angles of the beams radiated from the respective radiating elements 302, 304, 306, 308 and 310.

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 communication module 500 can be improved.

The first gear 402 is a gear disposed between the plurality of phase shifters 100 and 200 and may be coupled to the coupling variable 120 of each of the phase shifters 100 and 200. The fitting hole 102b and the feeding point 120a may be formed in the coupling point 102a and the coupling variable changer 120. The fitting hole 102b is formed with a rotation axis 408 may be accommodated. The rotation axis 408 may extend toward the first phase shifter 100 and the second phase shifter 200 and may be fixed to the fitting hole 102b. Further, the first gear 402 can rotate in conjunction with the second gear 406. Specifically, the first gear 402 meshes with the second gear 406 as the second gear 406 rotates to couple the first phase shifter 100 and the second phase shifter 200, It is possible to simultaneously rotate each of the changers 102 within a set angle range.

Meanwhile, the first gear 402 may be a spur gear, for example, and the second gear 406 may be a worm gear, for example. In this case, the area occupied by the first gear 402 and the second gear 406 is minimized to simplify the structure of the phase shift module 400, thereby facilitating the fabrication of the miniaturized phase shift module 400 It becomes. The gear ratio between the first gear 402 and the second gear 406 such as the size (or number) of the protrusions (or teeth) of the first gear 402 and the size Or the size (or number) of the wireless signal to adjust the phase shift width of the wireless signal more broadly or more finely. For this purpose, the first gear 402 and the second gear 406 are detachably mountable and can be replaced by a first gear 402 or a second gear 406 having protrusions of different sizes (or numbers) Do.

The rod 404 may be a member operated by the user to rotate the coupling adjuster 102 and may extend in one direction at one side of the first gear 402. The rod 404 may, for example, be rod-shaped and function as a rotational axis of the second gear 406. The user can rotate clockwise or counterclockwise while holding the rod 404 by hand, in which case the second gear 406 is rotated together with the rod 404.

The second gear 406 includes a hollow portion through which the rod 404 penetrates and mates with the first gear 402 while rotating together with the rod 404. The second gear 406 is seated on the outer surface of the rod 404 and can rotate with the rod 404 when the rod 404 rotates according to the user's operation. In this case, the first gear 402 can rotate in conjunction with the second gear 406, and is engaged with the second gear 406 as the second gear 406 rotates, The coupling variable device 102 of the first phase shifter 100 and the coupling variable device 102 of the second phase shifter 200 can be simultaneously rotated within the set angular range.

The support member 410 is formed on the substrate of the second phase shifter 200 to support the rod 404. At this time, the supporting member 410 may be provided with a through hole 410a through which the rod 404 penetrates. In addition, a plurality of support members 410 may be formed on the substrate of the second phase shifter 200 at predetermined intervals. Accordingly, the rod 404 can penetrate the through hole 410a, can be supported by the plurality of support members 410, and can stably rotate.

The fixing member 412 fixes the coupling variable 120 of the first phase shifter 100 and the coupling variable 120 of the second phase shifter 200 to each other. The fixing member 412 may be fixed to the end of the coupling variable device 120 of the first phase shifter 100 and the end of the coupling variable device 120 of the second phase shifter 200, Accordingly, the coupling variable device 120 of the first phase shifter 100 and the second phase shifter 200 is simultaneously rotated as the first gear 402 rotates.

As described above, according to the embodiments of the present invention, the first gear 402, the rod 404, and the second gear 406 operate in cooperation with each other, so that the plurality of phase shifters 100, It can be integrated in a simple manner. In this case, the structure of the phase displacement module 500 is simplified, the cost of the phase displacement module 500 can be reduced, and the user can adjust the angle of the beam emitted from the base station antenna 300 in a simpler manner.

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 third output terminal 168 and the fifth output terminal 172 of each of the phase shifters 100 and 200 according to the embodiments of the present invention.

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 point 120b: first coupling input section
120c: second coupling input section 120d, 140: slot
130: ground hole 140a: first slot portion
140b: second slot part 150, 120d: slit
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: support member 410a: through hole
412: Fixing member 500: Communication device

Claims (12)

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 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.
[2] The apparatus of claim 1,
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.
3. The method of claim 2,
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.
4. The semiconductor device according to claim 3,
And a first protruding line disposed in the first region.
4. The semiconductor device according to claim 3,
And a second protruding line disposed in the second region.
4. The semiconductor device according to claim 3,
And a third protruding line disposed in the third region.
4. The semiconductor device according to claim 3, wherein the projecting line
A second protruding line disposed in the second region; And
And a third protruding line disposed in the third region.
The method according to claim 1,
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.
The method according to claim 1,
Wherein the coupling variable device is formed with a slot along an extending direction of the coupling variable device.
The method according to claim 1,
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.
At least one phase shifter according to any one of claims 1 to 10; And
And a base station antenna having a plurality of radiating elements connected to the phase shifter.
12. The method of claim 11,
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.













KR1020170026560A 2017-02-28 2017-02-28 Phase shifter and communication device including the same KR101725233B1 (en)

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PCT/KR2018/002365 WO2018159973A1 (en) 2017-02-28 2018-02-27 Phase shifter and communication device comprising same

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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

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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

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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

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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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