CN217361873U - Miniaturized microstrip three-power device - Google Patents
Miniaturized microstrip three-power device Download PDFInfo
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- CN217361873U CN217361873U CN202221421884.4U CN202221421884U CN217361873U CN 217361873 U CN217361873 U CN 217361873U CN 202221421884 U CN202221421884 U CN 202221421884U CN 217361873 U CN217361873 U CN 217361873U
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Abstract
The utility model provides a miniaturized three merit wares of microstrip, belongs to communication technology and machine-building field, the utility model discloses a solve the great problem of current three merit ware sizes. The utility model comprises a Wilkinson power divider, a first filter, a second filter, a third filter and an isolation resistor, wherein the Wilkinson power divider is of a one-to-three structure, and three microstrip lines of the Wilkinson power divider are respectively connected with the first filter, the second filter and the third filter; and an output port of the Wilkinson power divider is provided with an isolation resistor.
Description
Technical Field
The utility model relates to a miniaturized design technique of three merit wares belongs to communication technology and machine-building field.
Background
With the rapid development of modern communication technology, people have higher and higher requirements on the weight and size of communication equipment, and compared with a metal waveguide, a transmission line device manufactured by adopting a microstrip line structure has smaller volume and lighter weight, and is widely applied to miniaturized devices.
The power divider (full-scale power divider) belongs to a transmission line device made of microstrip line structure, and is a device which divides one path of input signal energy into two paths or multiple paths to output equal or unequal energy.
At present, a multi-work device design with more than two outputs is generally formed by combining double work devices, taking a three-work device as an example for explanation, a conventional design mode of the three-work device is to divide an input into two parts and divide a separated one of the two parts into two parts, the design mode is often large in size, and the energy ratio of the first section, the one part and the two parts, of the two work devices is 1: 2, are also complex in design.
In a current communication system, multiple sub-band signals are often combined and used in a certain frequency band, and each sub-band needs to have a good frequency band response. The common metal waveguide is often large in size and difficult to meet the structural requirement of miniaturization of the device, so that the design of the microstrip line multifunctional device with a compact structure is very important.
SUMMERY OF THE UTILITY MODEL
To the great problem of current triplexer size, the utility model provides a miniaturized microstrip triplexer.
The utility model relates to a miniaturized microstrip three-power device, which comprises a Wilkinson power divider 1-1, a first filter 1-2, a second filter 1-3, a third filter 1-3 and an isolation resistor,
the Wilkinson power divider 1-1 is of a one-to-three structure, and three microstrip lines of the Wilkinson power divider 1-1 are respectively connected with a first filter 1-2, a second filter 1-3 and a third filter 1-3;
and an output port of the Wilkinson power divider is provided with an isolation resistor.
Preferably, three microstrip lines of the Wilkinson power divider 1-1 are a first microstrip line 2-2-1, a second microstrip line 2-2 and a third microstrip line 2-2-3 respectively, the three microstrip lines are of a broken line structure and are arranged on the ceramic medium 2-1 in parallel, the ceramic medium 2-1 is positioned on the upper surface of the grounding layer 2-3, the head ends of the three microstrip lines are connected with the input microstrip lines together, and the tail ends of the three microstrip lines are connected with the first filter 1-2, the second filter 1-3 and the third filter 1-3 respectively.
Preferably, the isolation resistor comprises a resistor R 1 Resistance R 2 And a resistance R 3 Resistance R 2 A resistor R is welded with the first microstrip line 2-2-1 and the second microstrip line 2-2-2 3 A resistor R is welded with the second microstrip line 2-2-2 and the third microstrip line 2-2-3 1 And the first microstrip line 2-2-1 and the third microstrip line 2-2-3 are welded.
Preferably, the resistance R 1 And a resistor R 2 、R 3 With insulating layers 2-2-4 placed in between.
Preferably, the first filter 1-2, the second filter 1-3 and the third filter 1-3 all adopt parallel coupling microstrip line filters, hairpin filters, quarter-wavelength short stub filters or interdigital microstrip filters.
The utility model has the advantages that:
1) the invention adopts a structure of a Wilkinson power divider and a hairpin filter, the Wilkinson power divider adopts a one-to-three structure, and the volume of the device can be effectively reduced by the lamination welding of the isolation resistors;
2) the Wilkinson power divider adopts a broken line structure, so that the overall size can be effectively reduced;
3) compared with a metal waveguide, the microstrip line structure adopting the ceramic with high dielectric constant as the dielectric substrate has smaller volume.
Drawings
Fig. 1 is a schematic structural view of a miniaturized microstrip triplexer according to the present invention;
fig. 2 is a schematic view of isolation resistance welding in a miniaturized microstrip triplexer according to the present invention;
fig. 3 is a schematic frequency response diagram of a miniaturized microstrip triplexer according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be further described with reference to the accompanying drawings and specific embodiments, which are not intended to limit the present invention.
The first specific implementation way is as follows: the present embodiment is described below with reference to fig. 1 to 3, and the miniaturized microstrip triplexer in the present embodiment includes a Wilkinson power divider 1-1, a first filter 1-2, a second filter 1-3, a third filter 1-3, and an isolation resistor,
the Wilkinson power divider 1-1 is of a one-to-three structure, and three microstrip lines of the Wilkinson power divider 1-1 are respectively connected with a first filter 1-2, a second filter 1-3 and a third filter 1-3;
and an output port of the Wilkinson power divider is provided with an isolation resistor.
Three microstrip lines of the Wilkinson power divider 1-1 are a first microstrip line 2-2-1, a second microstrip line 2-2-2 and a third microstrip line 2-2-3 respectively, the three microstrip lines are of a zigzag line structure and are arranged on the ceramic medium 2-1 in parallel, the ceramic medium 2-1 is positioned on the upper surface of the grounding layer 2-3, the head ends of the three microstrip lines are connected with the input microstrip lines together, and the tail ends of the three microstrip lines are connected with the first filter 1-2, the second filter 1-3 and the third filter 1-3 respectively.
The isolation resistor comprises a resistor R 1 Resistance R 2 And a resistance R 3 Resistance R 2 A resistor R is welded with the first microstrip line 2-2-1 and the second microstrip line 2-2-2 3 A resistor R is welded with the second microstrip line 2-2-2 and the third microstrip line 2-2-3 1 And the first microstrip line 2-2-1 and the third microstrip line 2-2-3 are welded.
The isolated resistance welding mode is shown in figure 3,
resistance R 1 And a resistor R 2 、R 3 With insulating layers 2-2-4 placed in between. Can effectively prevent short circuit caused by wrong welding.
The first filter 1-2, the second filter 1-3 and the third filter 1-3 all adopt parallel coupling microstrip line filters, hairpin filters, quarter-wavelength short-circuit stub filters or interdigital microstrip filters.
Fig. 1 is a schematic structural diagram of a microstrip multi-functional device provided by the present invention, in which 1-1 shows a divide-by-three Wilkinson power divider, which is a power divider for dividing energy of one input signal into two or more paths and outputting equal or unequal energy. Because the self structural feature of Wilkinson merit branch ware, Wilkinson merit divides the ware to have advantages such as broadband, high isolation, insertion loss are little, when dividing the ware as the signal processing network of microstrip multi-functional ware with Wilkinson merit, can design the microstrip multi-functional ware of various levels or the multi-functional ware of broadband, and each subband has good frequency band response, like high isolation etc. the passband that can handle each microstrip filter even has the situation of overlap. In the embodiment of the invention, the Wilkinson power divider with a one-to-three structure is used, and three microstrip lines forming the power divider use a broken line structure, so that the size and the volume of the power divider can be reduced. Three microstrip lines at the output ends 1-5 of the triplexer directly need to be welded with isolation resistors two by two, please refer to fig. 2, fig. 2 is a schematic diagram of welding isolation resistors of a Wilkinson power divider, and a resistor R 2 Is an isolation resistor between the first microstrip line 2-2-1 and the second microstrip line 2-2-2, a resistor R 3 Is an isolation resistor between the second microstrip line 2-2-2 and the third microstrip line 2-2-3, a resistor R 1 Is an isolation resistor and a welding resistor R between the first microstrip line 2-2-1 and the third microstrip line 2-2-3 1 When R is present, R may be 1 Left end pad and R 2 Left end pad bonding, R 1 Right terminal pad and R 3 Soldering to the right-hand end pad, possibly at the resistor R 1 And R 2 、R 3 An insulating layer 2-2-4 is arranged at the contact position to avoid R caused by welding operation error 1 Left end pad and R 2 Right terminal pad or R 1 Right terminal pad and R 3 The left end bonding pad is in a phenomenon of short circuit caused by wrong welding.
The parts 1-2, 1-3 and 1-4 in fig. 1 represent the first filter 1-2, the second filter 1-3 and the third filter 1-3, respectively, and the three filters can be parallel coupling microstrip line filters, hairpin filters, quarter-wave short stub filters or interdigital microstrip filters, etc. The preferable scheme is a hairpin filter, which is formed by arranging and coupling hairpin resonators side by side and is formed by folding half-wavelength coupled resonators into a U-shaped structure, and the coupling topological structure belongs to cross coupling. The greatest advantage of cross coupling is that transmission zeros can be generated at finite frequencies near the passband, and thus the out-of-band rejection capability of the filter will be greatly improved.
The first filter 1-2, the second filter 1-3 and the third filter 1-3 are respectively designed with different passbands to meet the overall requirement.
The invention mainly aims at the design of the three-power device, and the design adopts a ceramic material with higher dielectric constant on the material selection of the dielectric substrate, so that the structure size can be reduced relative to a metal cavity structure; on structural design, choose for use the Wilkinson merit to divide the structure of ware plus hairpin type wave filter, can satisfy better isolation between the port, realize better frequency band response, wherein, the Wilkinson merit divides the ware to use one minute three structure, adopts stromatolite formula resistance welding mode, compares the structure of traditional one minute two subdivides two, can effectively reduce the structure size.
The three-power device shown in the figure 1 is adopted and provided with four ports, wherein an input microstrip line connected with a Wilkinson power divider 1-1 is a port 1, output ends of a first filter 1-2, a second filter 1-3 and a third filter 1-3 are a port 2, a port 3 and a port 4 respectively, a frequency response curve in practical application of the three-power device is shown in the figure 3, wherein the abscissa is frequency, the ordinate is insertion loss, an S12 curve is a dotted line in the figure and represents the insertion loss from the port 1 to the port 2, and a band-pass range of the filter formed by the curve is between 1.27GHz and 1.57 GHz; the curve of S13 is a solid line in the figure, represents the insertion loss from 1 port to 3 ports, and the bandwidth range of the filter formed by the curve is between 1.98GHz and 2.01 GHz; the S14 curve is shown as a dashed line, representing a 1-port to 4-port insertion loss, and constitutes a filter having a bandwidth in the range of 2.17GHz to 2.2 GHz. The out-of-band inhibition of the three curves is-15 dB, and the normal use can be met.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (5)
1. A miniaturized microstrip triplexer is characterized by comprising a Wilkinson power divider (1-1), a first filter (1-2), a second filter (1-3), a third filter (1-3) and an isolation resistor,
the Wilkinson power divider (1-1) is of a one-to-three structure, and three microstrip lines of the Wilkinson power divider (1-1) are respectively connected with a first filter (1-2), a second filter (1-3) and a third filter (1-3);
and an output port of the Wilkinson power divider is provided with an isolation resistor.
2. The miniaturized microstrip triplexer of claim 1, wherein three microstrip lines of the Wilkinson power divider (1-1) are a first microstrip line (2-2-1), a second microstrip line (2-2-2) and a third microstrip line (2-2-3), the three microstrip lines are all of a zigzag structure and are arranged on the ceramic medium (2-1) in parallel, the ceramic medium (2-1) is located on the upper surface of the ground layer (2-3), the head ends of the three microstrip lines are connected with the input microstrip lines together, and the tail ends of the three microstrip lines are connected with the first filter (1-2), the second filter (1-3) and the third filter (1-3) respectively.
3. The microstrip triplexer of claim 2 wherein the isolation resistor comprises a resistor R 1 Resistance R 2 And a resistance R 3 Resistance R 2 And a first microstrip line (2-1) Welded with the second microstrip line (2-2-2), and a resistor R 3 Welded with the second microstrip line (2-2-2) and the third microstrip line (2-2-3), and a resistor R 1 Is welded with the first microstrip line (2-2-1) and the third microstrip line (2-2-3).
4. The microstrip triplexer of claim 3 wherein the resistor R is a resistor 1 And a resistor R 2 、R 3 An insulating layer (2-2-4) is placed between them.
5. The miniaturized microstrip triplexer of any one of claims 1-3 wherein the first filter (1-2), the second filter (1-3) and the third filter (1-3) are parallel coupled microstrip filters, hairpin filters, quarter-wave short stub filters or interdigital microstrip filters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221421884.4U CN217361873U (en) | 2022-06-07 | 2022-06-07 | Miniaturized microstrip three-power device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221421884.4U CN217361873U (en) | 2022-06-07 | 2022-06-07 | Miniaturized microstrip three-power device |
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| CN217361873U true CN217361873U (en) | 2022-09-02 |
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| CN202221421884.4U Active CN217361873U (en) | 2022-06-07 | 2022-06-07 | Miniaturized microstrip three-power device |
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- 2022-06-07 CN CN202221421884.4U patent/CN217361873U/en active Active
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