CN210744127U - 2X 4Butler matrix - Google Patents
2X 4Butler matrix Download PDFInfo
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- CN210744127U CN210744127U CN201921480148.4U CN201921480148U CN210744127U CN 210744127 U CN210744127 U CN 210744127U CN 201921480148 U CN201921480148 U CN 201921480148U CN 210744127 U CN210744127 U CN 210744127U
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Abstract
The utility model provides a 2X 4Butler matrix, including Lange coupler, first short circuit coupling line, second short circuit coupling line, first impedance match line, second impedance match line, first microstrip line, second microstrip line, third microstrip line and fourth microstrip line, the utility model discloses a realization of microstrip line, it is with low costs, and have fine stability, be convenient for weld in batches, easily be connected with the radio frequency cable and constitute the complete machine. Moreover, because the utility model discloses the scheme of ware is divided to innovative adoption Lange electric bridge and short circuit coupling line merit still has the characteristics of small in size, ultra wide band, high isolation, has adapted to the development trend of base station antenna miniaturization, wide band ization, has very high application prospect and use value.
Description
Technical Field
The utility model relates to a microwave passive device technical field, concretely relates to 2X 4Butler matrix.
Background
The existing similar matrix board has two realization modes, wherein one realization mode is a microstrip line, and a scheme of cascading a power divider and a branch line coupler is adopted, the main defects of the scheme are that the power divider cannot output stable 180-degree phase difference, and the branch line coupler can only realize 20% of bandwidth, which can cause the scheme to be only suitable for a dual-beam antenna with a narrow frequency band, and the horizontal beam width and the direction are both comparatively divergent; in another implementation mode, a scheme of cascading a power divider and a strip line coupler is adopted, the scheme solves the problem that the bandwidth of the microstrip line scheme is insufficient, the bandwidth can reach more than 50%, but the scheme is limited by the form of the power divider, a stable 180-degree phase difference cannot be provided, and the strip line has the defects of high cost and difficulty in cascading and welding with a common feed network, so that cross-modulation hidden troubles are easily generated in the whole machine and the strip line is difficult to maintain.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem who mentions in the background art, the utility model provides a 2X 4Butler matrix, its implementation who uses the microstrip line, it is with low costs, and have fine stability, be convenient for weld in batches, easily be connected with the radio frequency cable and constitute the complete machine.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a2 x 4Butler matrix comprises a Lange coupler, a first short-circuit coupling line, a second short-circuit coupling line, a first impedance matching line, a second impedance matching line, a first microstrip line, a second microstrip line, a third microstrip line and a fourth microstrip line, wherein the Lange coupler is provided with two input ends and two output ends which are respectively a first input end, a second input end, a first output end and a second output end; the 2 x 4Butler matrix is also provided with two input ports and four output ports which are respectively a first input port, a second input port, a first output port, a second output port, a third output port and a fourth output port;
a first input end and a second input end of the Lange coupler are respectively connected to a first input port and a second input port through a third microstrip line and a fourth microstrip line, a first output end of the Lange coupler is connected with one end of a first impedance matching line, the other end of the first impedance matching line is divided into two branches after passing through a first open-circuit branch, one branch is connected to a fourth output port through a first short-circuit coupling line, and the other branch is connected to a second output port through the first microstrip line;
the second output end of the Lange coupler is connected with one end of a second impedance matching line, the other end of the second impedance matching line is divided into two branches after passing through a second open-circuit branch, one branch is connected to the first output port through a second short-circuit coupling line, and the other branch is connected to the third output port through a second microstrip line.
Furthermore, the lengths of the first short-circuit coupling line and the second short-circuit coupling line are the same and the lengths are between the quarter wavelength of the high frequency point and the quarter wavelength of the low frequency point.
Furthermore, the lengths of the first microstrip line, the second microstrip line, the first short-circuit coupling line and the second short-circuit coupling line are the same.
Furthermore, the first input end and the first output end of the Lange coupler are distributed on the same side, the second input end and the second output end are distributed on the same side, and when any input end of the Lange coupler feeds power, the transmission phase of the output end on the different side is delayed by 90 degrees compared with the transmission phase of the output end on the same side.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a 2X 4Butler matrix uses the implementation of microstrip line, and is with low costs, and has fine stability, and the batch welding of being convenient for is easily connected with the radio frequency cable and is constituteed the complete machine. Moreover, because the utility model discloses the scheme of ware is divided to innovative adoption Lange electric bridge and short circuit coupling line merit still has the characteristics of small in size, ultra wide band, high isolation, has adapted to the development trend of base station antenna miniaturization, wide band ization, has very high application prospect and use value.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
the labels in the figure are: 1. lange coupler, 2, first short-circuit coupling line, 3, second short-circuit coupling line, 4, first impedance match line, 5, second impedance match line, 6, first microstrip line, 7, second microstrip line, 8, third microstrip line, 9, fourth microstrip line, 10, first open-circuit branch, 11, second open-circuit branch.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the following will combine the drawings in the present invention to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments, based on the embodiments in the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention.
A2 x 4Butler matrix comprises a Lange coupler 1, a first short-circuit coupling line 2, a second short-circuit coupling line 3, a first impedance matching line 4, a second impedance matching line 5, a first microstrip line 6, a second microstrip line 7, a third microstrip line 8 and a fourth microstrip line 9, wherein the Lange coupler 1 is provided with two input ends and two output ends which are respectively a first input end, a second input end, a first output end and a second output end; the 2 x 4Butler matrix is also provided with two input ports and four output ports which are respectively a first input port, a second input port, a first output port, a second output port, a third output port and a fourth output port;
a first input end and a second input end of the Lange coupler 1 are respectively connected to a first input port and a second input port through a third microstrip line 8 and a fourth microstrip line 9, a first output end of the Lange coupler 1 is connected with one end of a first impedance matching line 4, the other end of the first impedance matching line 4 is divided into two branches after passing through a first open-circuit branch joint 10, one branch is connected to a fourth output port through a first short-circuit coupling line 2, and the other branch is connected to a second output port through a first microstrip line 6;
the second output end of the Lange coupler 1 is connected to one end of a second impedance matching line 5, the other end of the second impedance matching line 5 is divided into two branches after passing through a second open-circuit branch 11, one of the branches is connected to the first output port through a second short-circuit coupling line 3, and the other branch is connected to the third output port through a second microstrip line 7.
Further optimizing the scheme, the lengths of the first short-circuit coupling line 2 and the second short-circuit coupling line 3 are the same and the lengths are between the quarter wavelength of the high frequency point and the quarter wavelength of the low frequency point.
Further optimizing the scheme, the lengths of the first microstrip line 6, the second microstrip line 7, the first short-circuit coupling line 2 and the second short-circuit coupling line 3 are the same.
In a further optimized scheme, the first input end and the first output end of the Lange coupler 1 are distributed on the same side, the second input end and the second output end are distributed on the same side, and when any input end of the Lange coupler 1 feeds power, the transmission phase of the output end on the different side is delayed by 90 degrees compared with the transmission phase of the output end on the same side.
The utility model discloses mainly adopt the realization scheme of microstrip line, its frequency band is 1427 supplyes 2690 MHz's matrix board to four output ports have stable power dividing ratio and phase difference.
The present invention is described in detail below with reference to the accompanying drawings:
as shown in fig. 1, the 2 × 4Butler matrix of the present invention has two input ports and four output ports, namely a first input port in1, a second input port in2, a first output port out1, a second output port out2, a third output port out3 and a fourth output port out4, wherein, the Lange coupler 1 is a 3db coupler which can provide a power division ratio of 1:1, a first input end and a second input end of the Lange coupler 1 are respectively connected to a first input port and a second input port through a third microstrip line 8 and a fourth microstrip line 9, a first output end of the Lange coupler 1 is connected with one end of a first impedance match line 4, the other end of the first impedance match line 4 is divided into two branches after passing through a first open-circuit branch 10, one branch is connected to the fourth output port through the first short-circuit coupling line 2, and the other branch is connected to the second output port through the first microstrip line 6; the second output end of the Lange coupler 1 is connected to one end of a second impedance matching line 5, the other end of the second impedance matching line 5 is divided into two branches after passing through a second open-circuit branch 11, one of the branches is connected to the first output port through a second short-circuit coupling line 3, and the other branch is connected to the third output port through a second microstrip line 7.
The lengths of the first short-circuit coupling line 2 and the first short-circuit coupling line 3 are the same and are between the quarter wavelength of the high frequency point and the quarter wavelength of the low frequency point of the matrix plate, and the output ports connecting the first short-circuit coupling line 2 and the first short-circuit coupling line 3 and the output ports passing through microstrip lines with the same length are formed into a stable 180-degree phase difference which does not change along with the frequency.
Specifically, if the first input port in1 is taken as the input port, the phase difference between the node a and the node b is 90 °, and the relative phases of the first output port out1, the second output port out2, the third output port out3 and the fourth output port out4 are 0 °, -90 °, -180 °, and 90 ° (-270 °), in this order;
if the second input port in2 is taken as the input port, the phase difference at the node a and the node b is-90 °, and the relative phases of the first output port out1, the second output port out2, the third output port out3, and the fourth output port out4 are 90 °, 180 °, 270 °, 0 ° (360 °) in this order.
From the above, the utility model discloses a Lange electric bridge and the cascaded scheme of short circuit coupling line power divider realize, wherein Lange electric bridge provides 1:1 power dividing ratio and 90 ° stable phase difference, and the short circuit coupling line power divider realizes certain power dividing ratio and 180 ° stable phase difference according to the needs of horizontal plane beam forming; therefore, the phase difference of the four output ports can be ensured to be stabilized at 90 degrees by cascading the two components.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. A2 x 4Butler matrix comprises a Lange coupler (1), a first short-circuit coupling line (2), a second short-circuit coupling line (3), a first impedance matching line (4), a second impedance matching line (5), a first microstrip line (6), a second microstrip line (7), a third microstrip line (8) and a fourth microstrip line (9), wherein the Lange coupler (1) is provided with two input ends and two output ends which are respectively a first input end, a second input end, a first output end and a second output end; the method is characterized in that: the 2 x 4Butler matrix is also provided with two input ports and four output ports which are respectively a first input port, a second input port, a first output port, a second output port, a third output port and a fourth output port;
a first input end and a second input end of the Lange coupler (1) are connected to a first input port and a second input port through a third microstrip line (8) and a fourth microstrip line (9) respectively, a first output end of the Lange coupler (1) is connected with one end of a first impedance matching line (4), the other end of the first impedance matching line (4) is divided into two branches after passing through a first open-circuit branch joint (10), one branch is connected to a fourth output port through a first short-circuit coupling line (2), and the other branch is connected to a second output port through a first microstrip line (6);
the second output end of the Lange coupler (1) is connected with one end of a second impedance matching line (5), the other end of the second impedance matching line (5) is divided into two branches after passing through a second open-circuit branch (11), one branch is connected to the first output port through a second short-circuit coupling line (3), and the other branch is connected to the third output port through a second microstrip line (7).
2. A 2 x 4Butler matrix according to claim 1 wherein: the lengths of the first short-circuit coupling line (2) and the second short-circuit coupling line (3) are the same and the lengths are between the quarter wavelength of a high frequency point and the quarter wavelength of a low frequency point.
3. A 2 x 4Butler matrix according to claim 1 wherein: the lengths of the first microstrip line (6), the second microstrip line (7), the first short-circuit coupling line (2) and the second short-circuit coupling line (3) are the same.
4. A 2 x 4Butler matrix according to claim 1 wherein: the first input end and the first output end of the Lange coupler (1) are distributed on the same side, the second input end and the second output end are distributed on the same side, and when any input end of the Lange coupler (1) feeds power, the transmission phase of the output end on the different side is delayed by 90 degrees compared with the transmission phase of the output end on the same side.
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| CN201921480148.4U CN210744127U (en) | 2019-09-06 | 2019-09-06 | 2X 4Butler matrix |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110649357A (en) * | 2019-09-06 | 2020-01-03 | 广东通宇通讯股份有限公司 | 2X 4Butler matrix |
| CN110649357B (en) * | 2019-09-06 | 2024-06-04 | 广东通宇通讯股份有限公司 | 2X 4 Butler matrix |
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