CN213093323U - One-to-three microstrip power divider - Google Patents
One-to-three microstrip power divider Download PDFInfo
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- CN213093323U CN213093323U CN202021530691.3U CN202021530691U CN213093323U CN 213093323 U CN213093323 U CN 213093323U CN 202021530691 U CN202021530691 U CN 202021530691U CN 213093323 U CN213093323 U CN 213093323U
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Abstract
A one-to-three microstrip power divider comprises an input end In, three branch microstrip transmission lines, an isolation resistor, output ends Out1, Out2 and Out3 and a dielectric substrate, wherein the input end In, the three branch microstrip transmission lines, the isolation resistor and the output ends are all arranged on the dielectric substrate; the input end In is connected to three branch microstrip transmission lines which are respectively connected to output ends Out1, Out2 and Out 3; in three adjacent branch transmission lines, isolation resistors are arranged at corresponding nodes between the adjacent transmission lines to form a cascade structure, the output of the branch microstrip transmission line of the previous stage cascade structure is connected with the input of the branch microstrip transmission line of the next stage cascade structure, the output of the last stage cascade branch microstrip transmission line is connected with output ends Out1, Out2 and Out3, and the output ends Out1 and Out3 are connected in series by resistors at the last stage. Compared with the prior art, the one-to-three microstrip power divider can achieve the effects of low insertion loss, high isolation, high reliability and wide frequency band with simple structure and small volume.
Description
Technical Field
The utility model relates to a ware technical field is divided to the merit, concretely relates to ware is divided to one minute three microstrip merit.
Background
A power divider is a multiport network that divides the input signal power into equal or unequal outputs. In communication equipment, the power divider has very wide application. The main technical parameters of the power divider include power loss, voltage standing wave ratio of each port, isolation between power distribution ports, amplitude balance, phase balance, power capacity, bandwidth and the like. The difficulty of the broadband one-to-three power divider in the modern technology is the contradiction between the isolation and the insertion loss, and if the balance between the isolation and the insertion loss is to be obtained, the size of the power divider is easy to be overlarge.
Disclosure of Invention
The utility model provides a ware is divided to one minute three microstrip merit, the RF signal of the less power of distribution that can be even, the frequency channel within range that is applicable to 1G-3G has small, simple structure, low insertion loss, high isolation, and the reliability is high, the wide characteristics of frequency band.
A one-to-three microstrip power divider comprises an input end In, three branch microstrip transmission lines, an isolation resistor, an output end Out1, an output end Out2, an output end Out3 and a dielectric substrate, wherein the input end In, the three branch microstrip transmission lines, the isolation resistor and the output end are all arranged on the dielectric substrate;
the input end In is connected to three branch microstrip transmission lines which are respectively connected to output ends Out1, Out2 and Out 3;
in the three adjacent branch transmission lines, isolation resistors are arranged at corresponding nodes between the adjacent transmission lines to form a cascade structure, the output of the branch microstrip transmission line of the previous stage cascade structure is connected with the input of the branch microstrip transmission line of the next stage cascade structure, the output of the last stage cascade branch microstrip transmission line is connected with output ends Out1, Out2 and Out3, and the output ends Out1 and Out3 are connected in series by resistors at the last stage.
Further, the microstrip power divider comprises three cascade structures.
Further, each branch transmission line of each stage of the cascade structure is an 1/4 wavelength impedance transformer.
Further, in the cascade structure of the microstrip power divider, each stage of the resistors is 92 Ω, 170 Ω, and 390 Ω, and the resistances of the resistors are the same, and the impedance values of the microstrip branch transmission lines are 93 Ω, 76 Ω, 65 Ω, and 52 Ω in sequence.
Further, the dielectric substrate adopts Rogers RT/duroid 5880, the thickness is 0.5mm, and the surface roughness is 0.02 mm.
Further, the isolation resistor is a 0805 packaged chip resistor. The power part and the output port adopt a 45-degree corner cutting mode.
The utility model has the advantages that: compared with the prior art, the utility model provides a ware is divided to one minute three microstrip merit can realize low insertion loss, high isolation, and the reliability is high, the wide effect of frequency band by simple structure and small ground.
Drawings
Fig. 1 is a schematic structural diagram of a one-to-three microstrip power divider according to an embodiment of the present invention.
In the figure, 1-input end, 2-branch microstrip transmission line, 3-isolation resistor, 4-output end and 5-medium substrate.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings.
A one-to-three microstrip power divider comprises an input end In, a branch microstrip transmission line and an isolation resistor, wherein an output end 4 comprises Out1, Out2, Out3 and a dielectric substrate. The input end 1 is marked as In and is connected to three branch microstrip transmission lines 2, the three branch microstrip transmission lines 2 are respectively connected to the output ends 4Out1, Out2 and Out3, a circuit formed by three adjacent branch transmission lines and isolation resistors 3 at corresponding nodes between the adjacent transmission lines forms a cascade structure, the output of the branch microstrip transmission line of the upper-stage cascade structure is connected with the input of the branch microstrip transmission line of the lower-stage cascade structure, the output of the branch microstrip transmission line of the last-stage cascade structure is connected with the output ends Out1, Out2 and Out3, resistors are connected between the output ends Out1 and Out3 In series at the last section, and the microstrip power divider comprises three cascade structures. Each branch transmission line of each stage of the cascade structure is an 1/4 wavelength impedance transformer.
The dielectric substrate 5 was Rogers RT/duroid 5880, 0.5mm thick and 0.02mm surface roughness. The isolation resistor adopts a 0805 packaged chip resistor. The power division and the output port adopt a 45-degree corner cutting mode so as to realize better matching, the bandwidth is widened in a cascading mode, the isolation between the output ends Out1 and Out3 is improved, and due to the fact that excessive cascading is added, the insertion loss is increased, the size is increased, and therefore only three cascading structures are adopted. The isolation is further improved by connecting the output ends Out1 and Out3 in series through resistors at the last section, and the structural change of the microstrip line is reduced, so that the microstrip line is easier to manufacture.
The working frequency of the one-to-three microstrip power divider is as follows: 1G-3 Ghz. Referring to fig. 1, in the resistors of each stage, R1 is 92 Ω, R2 is 170 Ω, R3 is 390 Ω, and the resistance values of the resistors in the same stage are the same. For the impedance of each microstrip branch transmission line, Rl1 is 93 Ω, Rl2 is 76 Ω, Rl3 is 65 Ω, and Rl4 is 52 Ω.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment, but all equivalent modifications or changes made by those skilled in the art according to the present invention should be included in the protection scope of the claims.
Claims (6)
1. A one-to-three microstrip power divider is characterized in that:
the microstrip power divider comprises an input end In, three branch microstrip transmission lines, an isolation resistor, output ends Out1, Out2 and Out3 and a dielectric substrate, wherein the input end In, the three branch microstrip transmission lines, the isolation resistor and the output ends are all arranged on the dielectric substrate;
the input end In is connected to three branch microstrip transmission lines which are respectively connected to output ends Out1, Out2 and Out 3;
in three adjacent branch transmission lines, isolation resistors are arranged at corresponding nodes between the adjacent transmission lines to form a cascade structure, the output of the branch microstrip transmission line of the previous stage cascade structure is connected with the input of the branch microstrip transmission line of the next stage cascade structure, the output of the last stage cascade branch microstrip transmission line is connected with output ends Out1, Out2 and Out3, and the output ends Out1 and Out3 are connected in series by resistors at the last stage.
2. The one-to-three microstrip power divider according to claim 1, characterized in that: the microstrip power divider comprises three cascade structures.
3. The one-to-three microstrip power divider according to claim 1, characterized in that: each branch transmission line of each stage of the cascade structure is an 1/4 wavelength impedance transformer.
4. The one-to-three microstrip power divider according to claim 1, characterized in that: in the cascade structure of the microstrip power divider, each stage of resistors are respectively 92 omega, 170 omega and 390 omega, the resistance values of the resistors in the same stage are the same, and the impedance values of the microstrip branch transmission lines are sequentially 93 omega, 76 omega, 65 omega and 52 omega.
5. The one-to-three microstrip power divider according to claim 1, characterized in that: the dielectric substrate adopts Rogers RT/duroid 5880, the thickness is 0.5mm, and the surface roughness is 0.02 mm.
6. The one-to-three microstrip power divider according to claim 1, characterized in that: the isolation resistor is a 0805 packaged chip resistor; the power part and the output port adopt a 45-degree corner cutting mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021530691.3U CN213093323U (en) | 2020-07-29 | 2020-07-29 | One-to-three microstrip power divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021530691.3U CN213093323U (en) | 2020-07-29 | 2020-07-29 | One-to-three microstrip power divider |
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| Publication Number | Publication Date |
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| CN213093323U true CN213093323U (en) | 2021-04-30 |
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| CN202021530691.3U Active CN213093323U (en) | 2020-07-29 | 2020-07-29 | One-to-three microstrip power divider |
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| CN (1) | CN213093323U (en) |
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2020
- 2020-07-29 CN CN202021530691.3U patent/CN213093323U/en active Active
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