CN115483520A - High-power low-intermodulation power divider - Google Patents
High-power low-intermodulation power divider Download PDFInfo
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- CN115483520A CN115483520A CN202211289991.0A CN202211289991A CN115483520A CN 115483520 A CN115483520 A CN 115483520A CN 202211289991 A CN202211289991 A CN 202211289991A CN 115483520 A CN115483520 A CN 115483520A
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- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 11
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 11
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 11
- 239000003990 capacitor Substances 0.000 claims abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 230000001629 suppression Effects 0.000 abstract description 7
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
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Abstract
The application discloses ware is divided to high-power low intermodulation power, including head rod, second connecting rod and low-pass slow wave structure, be equipped with inserted block and slot on head rod and the second connecting rod terminal surface in opposite directions respectively, the inserted block is pegged graft with the slot cooperation, the parcel has the polytetrafluoroethylene lock ring on the outer wall of inserted block, the outer wall of polytetrafluoroethylene lock ring and the inner wall cooperation butt of slot, low-pass slow wave structure includes a plurality of high impedance lines and the low impedance line of turning right the interval from a left side and linking to each other. The power divider effectively reduces the size of a circuit by adding a polytetrafluoroethylene support form between the first connecting rod and the second connecting rod, and in addition, because the equivalent capacitor has the characteristic of passing alternating current and blocking direct current signals, the circuit can simultaneously realize the blocking of the direct current signals and the reduction of the size of the circuit; the low-pass slow-wave structure is formed by cascading high-low impedance lines, so that the miniaturization of the circuit size and the suppression characteristic of the power divider to out-of-band harmonics are effectively realized.
Description
Technical Field
The application relates to the field of power dividers, in particular to a high-power low-intermodulation power divider.
Background
Along with the continuous development of wireless communication technology, the data flow of various communication systems is continuously increased, the requirements on high-power and broadband transmission equipment are aggravated along with the rapid development of the communication technology and the aggravation of competition of the communication industry, and higher requirements are also put forward on performance indexes of power dividers in a radio frequency microwave communication system. The planar power divider with the wire can only work under the condition of low power and cannot meet the requirements of modern communication. The traditional coaxial power divider can meet the requirements, but with the miniaturization, integration and function compounding of modern communication circuits, the traditional coaxial power divider has larger circuit size and higher cost, and the application of the power divider is limited to a certain extent. Therefore, in recent years, it has become one of the hot spots to research a high-power divider with small volume and low loss.
In addition, with the continuous development of modern communication technology, the competition of the communication industry is aggravated and the requirement on the communication quality of the system is higher, and the signal-to-noise ratio of the system can be effectively improved by integrating the harmonic suppression into the design of the radio frequency device. Therefore, research on the radio frequency device having the harmonic suppression effect has also become another hot spot in the field of research on radio frequency devices. The research on the power divider with wide harmonic suppression characteristics is also receiving more and more attention, so it is especially important to improve the traditional structure and make technical innovation.
At present, in the design of a power divider of a radio frequency device, a traditionally designed coaxial power divider adopts a form of cascade connection of multi-stage quarter-wavelength impedance converters to realize the characteristic of circuit broadband, the size of the designed circuit is large, and in addition, high-frequency harmonic waves exist outside the band of the circuit.
Disclosure of Invention
The invention aims to provide a high-power low-intermodulation power divider to overcome the defects in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
the embodiment of the application discloses a high-power low intermodulation power divider, which is characterized in that: include from a left side turn right the head rod, second connecting rod and the low-pass slow wave structure that connect gradually, the head rod is equipped with the inserted block with concave being equipped with the slot on the terminal surface in opposite directions with the second connecting rod respectively protruding, the inserted block is pegged graft with the slot cooperation, the parcel has the polytetrafluoroethylene lock ring on the outer wall of inserted block, the outer wall of polytetrafluoroethylene lock ring and the inner wall cooperation butt of slot, the low-pass slow wave structure includes from a left side turn right a plurality of high impedance lines and the low impedance line that the interval links to each other, the one end that the second connecting rod deviates from the head rod is connected with the high impedance line of low-pass slow wave structure left end.
Preferably, in the high-power low-intermodulation power divider, the cascade connection of the adjacent high-impedance line and the low-impedance line is equivalent to a cascade connection of a capacitor and an inductor.
Preferably, in the high-power low-intermodulation power divider, the first connecting rod and the second connecting rod are made of aluminum.
Compared with the prior art, the invention has the advantages that:
1. the power divider effectively reduces the size of a circuit by adding the polytetrafluoroethylene support between the first connecting rod and the second connecting rod to realize equivalent capacitance loading effect, and in addition, the circuit can realize the separation of a direct current signal and the reduction of the size of the circuit simultaneously because the equivalent capacitance has the characteristic of passing through an alternating current and blocking the direct current signal.
2. The low-pass slow-wave structure is formed by cascading high-low impedance lines, so that the miniaturization of the circuit size and the suppression characteristic of the power divider to out-of-band harmonics are effectively realized.
3. The circuit structure is simple, the main body structure can be manufactured through a processing technology, the product consistency is good, the tolerance is high, the requirement for large-batch production can be met, and the cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a high-power low-intermodulation power divider according to an embodiment of the present invention;
fig. 2 is an equivalent circuit diagram of a high-power low intermodulation power divider according to an embodiment of the present invention;
fig. 3 is a graph showing a simulation graph of return loss of a high-power low-intermodulation power divider according to an embodiment of the present invention;
fig. 4 is a graph showing simulation graphs of insertion loss of a high-power low intermodulation power divider according to an embodiment of the present invention;
fig. 5 is an enlarged view of a portion of fig. 4.
Detailed Description
The technical solutions in the embodiments of the present invention will be described in detail below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1, the high-power low-intermodulation power divider in this embodiment includes a first connecting rod 1, a second connecting rod 2 and a low-pass slow-wave structure 3 which are sequentially connected from left to right, the opposite end surfaces of the first connecting rod 1 and the second connecting rod 2 are respectively provided with an inserting block 4 and a slot 5, the inserting block 4 is inserted and connected with the slot 5 in a matched manner, the outer wall of the inserting block 4 is wrapped with a polytetrafluoroethylene supporting ring 6, the outer wall of the polytetrafluoroethylene supporting ring 6 is abutted to the inner wall of the slot 8 in a matched manner, the low-pass slow-wave structure 3 includes a plurality of high-impedance lines 301 and low-impedance lines 302 which are connected at intervals from left to right, and one end of the second connecting rod 2, which deviates from the first connecting rod 1, is connected with the high-impedance line 301 at the left end of the low-pass slow-wave structure 3.
Furthermore, the cascade connection of the adjacent high-impedance line and the low-impedance line is equivalent to the cascade connection of a capacitor and an inductor.
Furthermore, the first connecting rod 1 and the second connecting rod 2 are made of aluminum.
In the technical scheme, a polytetrafluoroethylene support is added between a first connecting rod and a second connecting rod to form an equivalent capacitor C0, the capacitor can effectively reduce the electrical length size of a circuit and realize the function of alternating current and direct current, in addition, a high-impedance transmission line (corresponding to an inductor) can ignore the capacitance to ground and is equivalent to a series inductor Ls, a low-impedance transmission line (corresponding to a capacitor) can ignore the series inductor per se and is directly equivalent to a capacitance to ground Cs, and high-low impedance transmission lines are cascaded to form a low-pass slow-wave structure (due to the harmonic suppression characteristic of a low-pass filter), so that the size of a product can be effectively reduced, and the low-pass slow-wave structure has a good harmonic suppression effect on the out-band high frequency of a power divider.
Referring to fig. 3 to 5, from simulation results and test results, the two goodness of fit is high, the insertion loss of the high-power four-power divider is actually measured to be less than 0.2dB at 0.35 to 2.75GHz within a working frequency band, the return loss is less than 19dB, and meanwhile, the out-of-band rejection to 8.5GHz can reach less than-27 dB, and a good wide-out-of-band rejection characteristic is shown.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is merely a detailed description of the present application and it should be noted that modifications and embellishments could be made by those skilled in the art without departing from the principle of the present application and should also be considered as within the scope of the present application.
Claims (3)
1. A high-power low intermodulation power divider is characterized in that: include from a left side turn right the head rod, second connecting rod and the low-pass slow wave structure that connect gradually, the head rod is equipped with the inserted block with concave being equipped with the slot on the terminal surface in opposite directions with the second connecting rod respectively protruding, the inserted block is pegged graft with the slot cooperation, the parcel has the polytetrafluoroethylene lock ring on the outer wall of inserted block, the outer wall of polytetrafluoroethylene lock ring and the inner wall cooperation butt of slot, the low-pass slow wave structure includes from a left side turn right a plurality of high impedance lines and the low impedance line that the interval links to each other, the one end that the second connecting rod deviates from the head rod is connected with the high impedance line of low-pass slow wave structure left end.
2. A high power low intermodulation power divider as claimed in claim 1, characterized in that: and the cascade connection of the adjacent high-impedance line and the low-impedance line is equivalent to the cascade connection of a capacitor and an inductor.
3. The high power low intermodulation power divider as claimed in claim 1, wherein: the first connecting rod and the second connecting rod are made of aluminum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211289991.0A CN115483520A (en) | 2022-10-17 | 2022-10-17 | High-power low-intermodulation power divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211289991.0A CN115483520A (en) | 2022-10-17 | 2022-10-17 | High-power low-intermodulation power divider |
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| CN115483520A true CN115483520A (en) | 2022-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211289991.0A Pending CN115483520A (en) | 2022-10-17 | 2022-10-17 | High-power low-intermodulation power divider |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040160293A1 (en) * | 2003-02-13 | 2004-08-19 | Young-Joon Ko | Transmission line having photonic band gap coplanar waveguide structure and method for fabricating power divider using the same |
| CN103915669A (en) * | 2014-03-07 | 2014-07-09 | 华南理工大学 | Filtering power divider with double passing bands |
| CN106099298A (en) * | 2016-06-24 | 2016-11-09 | 西安电子科技大学 | Ultra broadband filter response power divider |
| CN108206321A (en) * | 2018-01-15 | 2018-06-26 | 南京福客通信设备有限公司 | A kind of coaxial power splitter of ultra wide band |
-
2022
- 2022-10-17 CN CN202211289991.0A patent/CN115483520A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040160293A1 (en) * | 2003-02-13 | 2004-08-19 | Young-Joon Ko | Transmission line having photonic band gap coplanar waveguide structure and method for fabricating power divider using the same |
| CN103915669A (en) * | 2014-03-07 | 2014-07-09 | 华南理工大学 | Filtering power divider with double passing bands |
| CN106099298A (en) * | 2016-06-24 | 2016-11-09 | 西安电子科技大学 | Ultra broadband filter response power divider |
| CN108206321A (en) * | 2018-01-15 | 2018-06-26 | 南京福客通信设备有限公司 | A kind of coaxial power splitter of ultra wide band |
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