CN109509981A - A kind of 2 × 4 Butler matrix networks - Google Patents
A kind of 2 × 4 Butler matrix networks Download PDFInfo
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- CN109509981A CN109509981A CN201811622040.4A CN201811622040A CN109509981A CN 109509981 A CN109509981 A CN 109509981A CN 201811622040 A CN201811622040 A CN 201811622040A CN 109509981 A CN109509981 A CN 109509981A
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- directional coupler
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- 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
- H01Q3/40—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 phasing matrix
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
- H01Q25/02—Antennas or antenna systems providing at least two radiating patterns providing sum and difference patterns
Abstract
The invention discloses a kind of 2 × 4 Butler matrix networks, including the first directional coupler, the second directional coupler, third directional coupler, the first Ohmic resistance and the second Ohmic resistance；Wherein, there are two input terminal and two output ends, respectively first input end, the second input terminal, the first output end and second output terminal for each directional coupler tool；2 × 4 butler matrix has 2 signal input ports, respectively first input port and the second input port, there is 4 output ports, respectively the first output port, second output terminal mouth, third output port and the 4th output port.It is few that the present invention constitutes component, structure is simple, when the second output terminal mouth out2 of the network, third output port out3, the first output port out1 and the 4th output port out4 are connect with equidistant 4 cell array respectively, the antenna pattern of two different beams direction can produce.
Description
Technical field
The present invention relates to fields of communication technology, and in particular to a kind of 2 × 4 Butler matrix networks.
Background technique
With the rapid development of mobile communication technology and sharply increasing for service of mobile communication, it is faced with communication cell
Between signal interference is strong, spectrum capabilities are insufficient and signal covering it is narrow the problems such as.Multibeam antenna can generate multiple wave beams simultaneously
Pattern characteristics can increase network capacity；In addition, multibeam antenna easily realizes narrow beam and high-gain, signal can be reduced
Interference and increase coverage distance.Therefore, multibeam antenna is with a wide range of applications and is worth.
Wherein, Butler (Butler) matrix is the important component of multibeam antenna, is to generate multi-beam characteristic
Critical component.However, structure is complicated for Butler (Butler) matrix in the prior art, and consume with higher, need
In further perfect.
Summary of the invention
In view of this, in order to solve the above problem in the prior art, the present invention proposes a kind of 2 × 4 butler matrix nets
Network.
The present invention is solved the above problems by following technological means:
A kind of 2 × 4 Butler matrix networks, including the first directional coupler, the second directional coupler, third directional couple
Device, the first Ohmic resistance and the second Ohmic resistance；Wherein, input terminal and two output ends there are two each directional coupler tools,
Respectively first input end, the second input terminal, the first output end and second output terminal；2 × 4 butler matrix has 2 letters
Number input port, respectively first input port and the second input port, there is 4 output ports, respectively the first output port,
Second output terminal mouth, third output port and the 4th output port；
The first input end of first directional coupler is connected to first input port, and the second of the first directional coupler
Input terminal is connected to the second input port；First input of the first output end and third directional coupler of the first directional coupler
End connection, the second input terminal of third directional coupler are connect with the first Ohmic resistance, the other end ground connection of the first Ohmic resistance,
First output end of third directional coupler is connect with the first output port, the second output terminal of third directional coupler and second
Output port connection；The second output terminal of first directional coupler is connect with the first input end of the second directional coupler, and second
Second input terminal of directional coupler is connect with the second Ohmic resistance, the other end ground connection of the second Ohmic resistance, the second orientation coupling
First output end of clutch is connect with third output port, and the second output terminal of the second directional coupler and the 4th output port connect
It connects.
Further, first directional coupler has 90 degree of phase-shift characterisitcs.
Further, second and third described directional coupler has 180 degree phase-shift characterisitc.
Further, the first directional coupler is that the constant power with 90 degree of Phase-Shifting Characteristics distributes directional coupler.
Further, the second directional coupler is that the unequal power with 180 degree Phase-Shifting Characteristics distributes directional coupler.
Further, third directional coupler is that the unequal power with 180 degree Phase-Shifting Characteristics distributes directional coupler.
Compared with prior art, beneficial effects of the present invention include at least:
A kind of composition component of 2 × 4 Butler matrix network provided by the invention is few, and structure is simple, when the of the network
Two output port out2, third output port out3, the first output port out1 and the 4th output port out4 respectively with etc. between
Away from 4 cell arrays connection, can produce two different beams direction antenna pattern.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is 2 × 4 Butler matrix network top level structure schematic diagrames of the invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with attached drawing and specifically
Embodiment technical solution of the present invention is described in detail.It should be pointed out that described embodiment is only this hair
Bright a part of the embodiment, instead of all the embodiments, based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
Please refer to Fig. 1, a kind of orientation of the first directional coupler of 2 × 4 Butler matrix network 1, second provided by the invention
Coupler 2, third directional coupler 3, the first Ohmic resistance 4 and the second Ohmic resistance 5 composition；Wherein, each directional coupler
There are two input terminal and two output ends, respectively first input end, the second input terminal, the first output end and the second output for tool
End；2 × 4 butler matrix has 2 signal input ports, respectively first input port in1 and the second input port
In2, there is 4 output ports, respectively the first output port out1, second output terminal mouth out2, third output port out3 and
4th output port out4.
The connection relationship of each component is as shown in Figure 1, the first input end 1a of first directional coupler 1 connects in the present invention
It is connected to first input port in1, the second input terminal 1b of the first directional coupler 1 is connected to the second input port in2；First is fixed
It is connect to the first output end 1c of coupler 1 with the first input end 3a of third directional coupler 3, third directional coupler 3
Second input terminal 3b is connect with the first Ohmic resistance 4, the other end of the first Ohmic resistance 4 ground connection, and the of third directional coupler 3
One output end 3c is connect with the first output port out1, the second output terminal 3d and second output terminal mouth of third directional coupler 3
Out2 connection；The second output terminal 1d of first directional coupler 1 is connect with the first input end 2a of the second directional coupler 2, the
Second input terminal 2b of two directional couplers 2 is connect with the second Ohmic resistance 5, the other end ground connection of the second Ohmic resistance 5, and second
First output end 2c of directional coupler 2 is connect with third output port out3, the second output terminal 2d of the second directional coupler 2
It is connect with the 4th output port out4.
In the present invention, first directional coupler 1 has 90 degree of phase-shift characterisitcs, i.e., when from the first directional coupler 1
Any one input terminal feed when, 90 degree of transmission phase delay of the transmission phase of heteropleural output end than ipsilateral output end；
Second and third described directional coupler has 180 degree phase-shift characterisitc, i.e., when any one input from second and third directional coupler
When the feed of end, the transmission phase delay 180 degree of the transmission phase of heteropleural output end than ipsilateral output end.
Specifically, the first directional coupler 1 is that the constant power with 90 degree of Phase-Shifting Characteristics distributes directional coupler.Work as signal
When being fed from the first input end 1a of the first directional coupler 1, the distribution power phase of the first output end 1c and second output terminal 1d
Deng for the half of input signal power, phase delay 90 of the output phase of second output terminal 1d relative to the first output end 1c
Degree.Similarly, when signal is fed from the second input terminal 1b of the first directional coupler 1, the output of the first output end 1c and second
It holds the distribution power of 1d equal, is the half of input signal power, the output phase of the first output end 1c is relative to the second output
The output phase of 1d is held to postpone 90 degree.
Second directional coupler 2 is that the unequal power with 180 degree Phase-Shifting Characteristics distributes directional coupler.When signal is from
When the first input end 2a feed of two directional couplers 2, the distribution power of the first output end 2c is the distribution of second output terminal 2d
N times of power, N > 1, phase delay 180 degree of the output phase of second output terminal 2d relative to the first output end 2c.Similarly,
When signal is fed from the second input terminal 2b of the second directional coupler 2, the distribution power of second output terminal 2d is the first output
N times, N > 1 for holding the distribution power of 2c, phase delay 180 of the output phase of the first output end 2c relative to second output terminal 2d
Degree.
Third directional coupler 3 is that the unequal power with 180 degree Phase-Shifting Characteristics distributes directional coupler.When signal is from
When the first input end 3a feed of three directional couplers 3, the distribution power of the first output end 3c is the distribution of second output terminal 3d
N times of power, N > 1, phase delay 180 degree of the output phase of second output terminal 3d relative to the first output end 3c.Similarly,
When signal is fed from the second input terminal 3b of third directional coupler 3, the distribution power of second output terminal 3d is the first output
N times, N > 1 for holding the distribution power of 3c, phase delay 180 of the output phase of the first output end 3c relative to second output terminal 3d
Degree.
Working principle of the present invention is as follows:
If radiofrequency signal is inputted from first input port in1, signal separates two-way after first passing around the first directional coupler 1
Signal, the first output end 1c signal of the first directional coupler 1 are 0 ° of 1/2 ∠, and second output terminal 1d signal is 1/2 ∠ -90 °,
Wherein 0 ° of 1/2 ∠ of the signal first input end 3a for flowing to third directional coupler 3,0 ° of 1/2 ∠ of signal is passed through third directional couple
After device 3, the signal of the first output end 3c of third directional coupler 3 is 0 ° of ∠ of N/ (2 × (N+1)), third directional coupler 3
The signal of second output terminal 3d is ∠ -180 ° of 1/ (2 × (N+1))；The second output terminal 1d signal 1/2 of first directional coupler 1
∠ -90 ° of first input end the 2a for flowing to the second directional coupler 2, ∠ -90 ° of signal 1/2 after the second directional coupler 2,
The signal of first output end 2c of two directional couplers 2 is ∠ -90 ° of N/ (2 × (N+1)), and the second of the second directional coupler 2 is defeated
The signal of outlet 2d is ∠ -270 ° of 1/ (2 × (N+1)).Therefore, if second is defeated after first input port in1 input signal
The output signal difference of exit port out2, third output port out3, the first output port out1 and the 4th output port out4
For 1/ ∠ -180 ° of (2 × (N+1)), ∠ -90 ° of N/ (2 × (N+1)), N/ (2 × (N+1)) 0 ° of ∠, 1/ (2 × (N+1)) ∠ -
270 °, i.e., when being fed from first input port in1, second output terminal mouth out2, third output port out3, the first output end
The signal power ratio of mouth out1 and the 4th output port out4 is 1:N:N:1, second output terminal mouth out2, third output port
The distribution power phase difference of the adjacent output port of out3, the first output port out1 and the 4th output port out4 is 90 °.
If radiofrequency signal is inputted from first input port in2, signal separates two-way after first passing around the first directional coupler 1
Signal, the first output end 1c signal of the first directional coupler 1 are 1/2 ∠ -90 °, and second output terminal 1d signal is 0 ° of 1/2 ∠,
Wherein ∠ -90 ° of signal 1/2 flows to the first input end 3a of third directional coupler 3, and ∠ -90 ° of signal 1/2 orient by third
After coupler 3, the signal of the first output end 3c of third directional coupler 3 is ∠ -90 ° of N/ (2 × (N+1)), and third orients coupling
The signal of the second output terminal 3d of clutch 3 is ∠ -270 ° of 1/ (2 × (N+1))；The second output terminal 1d of first directional coupler 1
0 ° of 1/2 ∠ of signal flows to the first input end 2a of the second directional coupler 2, and 0 ° of 1/2 ∠ of signal is passed through the second directional coupler 2
Afterwards, the signal of the first output end 2c of the second directional coupler 2 is 0 ° of ∠ of N/ (2 × (N+1)), the of the second directional coupler 2
The signal of two output end 2d is ∠ -180 ° of 1/ (2 × (N+1)).Therefore, if after first input port in2 input signal, the
The output signal of two output port out2, third output port out3, the first output port out1 and the 4th output port out4
Respectively 1/ ∠ -270 ° of (2 × (N+1)), N/ (2 × (N+1)) 0 ° of ∠, ∠ -90 ° of N/ (2 × (N+1)), 1/ (2 × (N+1)) ∠ -
180 °, i.e., when being fed from first input port in2, second output terminal mouth out2, third output port out3, the first output end
The signal power ratio of mouth out1 and the 4th output port out4 is 1:N:N:1, second output terminal mouth out2, third output port
The distribution power phase difference of the adjacent output port of out3, the first output port out1 and the 4th output port out4 is -90 °.
A kind of composition component of 2 × 4 Butler matrix network provided by the invention is few, and structure is simple, when the of the network
Two output port out2, third output port out3, the first output port out1 and the 4th output port out4 respectively with etc. between
Away from 4 cell arrays connection, can produce two different beams direction antenna pattern.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (6)
1. 2 × 4 Butler matrix network of one kind, which is characterized in that including the first directional coupler, the second directional coupler,
Three directional couplers, the first Ohmic resistance and the second Ohmic resistance；Wherein, there are two input terminal and two for each directional coupler tool
A output end, respectively first input end, the second input terminal, the first output end and second output terminal；2 × 4 Butler square
Battle array has 2 signal input ports, respectively first input port and the second input port, there is 4 output ports, and respectively first
Output port, second output terminal mouth, third output port and the 4th output port；
The first input end of first directional coupler is connected to first input port, the second input of the first directional coupler
End is connected to the second input port；First output end of the first directional coupler and the first input end of third directional coupler connect
It connects, the second input terminal of third directional coupler is connect with the first Ohmic resistance, the other end ground connection of the first Ohmic resistance, third
First output end of directional coupler is connect with the first output port, the second output terminal of third directional coupler and the second output
Port connection；The second output terminal of first directional coupler is connect with the first input end of the second directional coupler, the second orientation
Second input terminal of coupler is connect with the second Ohmic resistance, the other end ground connection of the second Ohmic resistance, the second directional coupler
The first output end connect with third output port, the second output terminal of the second directional coupler is connect with the 4th output port.
2. 2 × 4 Butler matrix network according to claim 1, which is characterized in that first directional coupler has
90 degree of phase-shift characterisitcs.
3. 2 × 4 Butler matrix network according to claim 1, which is characterized in that second and third described directional coupler
With 180 degree phase-shift characterisitc.
4. 2 × 4 Butler matrix network according to claim 1, which is characterized in that the first directional coupler is with 90
The constant power for spending Phase-Shifting Characteristics distributes directional coupler.
5. 2 × 4 Butler matrix network according to claim 1, which is characterized in that the second directional coupler be with
The unequal power of 180 degree Phase-Shifting Characteristics distributes directional coupler.
6. 2 × 4 Butler matrix network according to claim 1, which is characterized in that third directional coupler be with
The unequal power of 180 degree Phase-Shifting Characteristics distributes directional coupler.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811622040.4A CN109509981A (en) | 2018-12-28 | 2018-12-28 | A kind of 2 × 4 Butler matrix networks |
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| CN201811622040.4A CN109509981A (en) | 2018-12-28 | 2018-12-28 | A kind of 2 × 4 Butler matrix networks |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391795A (en) * | 2019-06-14 | 2019-10-29 | 浙江大学 | A kind of on piece simulation multi-beam phase shift synthesizer |
| CN110649357A (en) * | 2019-09-06 | 2020-01-03 | 广东通宇通讯股份有限公司 | 2X 4Butler matrix |
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| CN102714805A (en) * | 2012-03-05 | 2012-10-03 | 华为技术有限公司 | Antenna system |
| CN209357924U (en) * | 2018-12-28 | 2019-09-06 | 广东博纬通信科技有限公司 | A kind of 2 × 4 Butler matrix networks |
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2018
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| CN102714805A (en) * | 2012-03-05 | 2012-10-03 | 华为技术有限公司 | Antenna system |
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Non-Patent Citations (1)
| Title |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391795A (en) * | 2019-06-14 | 2019-10-29 | 浙江大学 | A kind of on piece simulation multi-beam phase shift synthesizer |
| CN110391795B (en) * | 2019-06-14 | 2021-02-12 | 浙江大学 | On-chip analog multi-beam phase-shifting synthesizer |
| CN110649357A (en) * | 2019-09-06 | 2020-01-03 | 广东通宇通讯股份有限公司 | 2X 4Butler matrix |
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