CN217983631U - Ultra-wideband power divider capable of expanding to low frequency - Google Patents
Ultra-wideband power divider capable of expanding to low frequency Download PDFInfo
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- CN217983631U CN217983631U CN202222023382.2U CN202222023382U CN217983631U CN 217983631 U CN217983631 U CN 217983631U CN 202222023382 U CN202222023382 U CN 202222023382U CN 217983631 U CN217983631 U CN 217983631U
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Abstract
An ultra-wideband power divider expanded to low frequency comprises a dielectric slab, wherein an input port 1 is arranged at one end of the dielectric slab, a first output microstrip line 2 and a second output microstrip line 3 which are symmetrical are arranged at the other end of the dielectric slab, a first branch line 41 and a second branch line 42 which are symmetrical are arranged between the first output microstrip line 2 and the input port 1 and between the second output microstrip line 3 and the input port 1, the input port 1 is respectively connected with one end of the first branch line 41 and one end of the second branch line 42, the other end of the first branch line 41 and the other end of the second branch line 42 are respectively connected with the first output microstrip line 2 and the second output microstrip line 3, and an isolation resistor R is arranged between the first branch line 41 and the second branch line 42; the utility model discloses simple structure, frequency band low frequency extend to 350MHz, and the high frequency reaches 6GHz, realizes broadband and high isolation, is a big innovation on the merit divides the ware, has good society and economic benefits.
Description
Technical Field
The utility model relates to a ware, especially an ultra wide band merit that extends to low frequency are divided to merit.
Background
With the rapid development of wireless communication technology, the bandwidth used in microwave radio frequency systems is also getting larger and larger, and then microwave devices such as broadband antennas, broadband filters and the like are appeared. The demand for wideband power splitters is also increasing. The Wilkinson power divider has the advantages of simple design, easy manufacture, high isolation and the like, and is widely applied to microwave systems such as radars, microwave communication, electronic reconnaissance, countermeasure and the like.
However, due to the structural defects, the wilkinson power divider uses a lambda/4 microstrip line matching mode after being divided into two paths, and the single-order wilkinson power divider is only suitable for narrow bands and is difficult to achieve for low-frequency parts. In the theoretical calculation of the multi-order Wilkinson power divider, after the order exceeds 7, the calculation result of the isolation resistance of the multi-order Wilkinson power divider has a negative value, and the result is obviously incorrect. Therefore, whether an ultra-wideband power divider covering low frequency exists or not is not reported in public.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned condition, for overcoming prior art's defect, the utility model aims at providing an extend to the ultra wide band merit of low frequency and divide the ware, can effectively solve current merit and divide the ware can not compromise the problem of broadband and low frequency simultaneously.
In order to realize the above-mentioned purpose, the utility model provides a technical scheme be, an extend ultra wide band merit to low frequency divides ware, including the dielectric-slab, the dielectric-slab on one end be equipped with input port 1, the other end is equipped with first output microstrip line 2 and the second output microstrip line 3 of symmetry, first branch line 41, the second branch line 42 of symmetry are equipped with between first output microstrip line 2 and second output microstrip line 3 and the input port 1, input port 1 is connected with the one end of first branch line 41 and second branch line 42 respectively, the first branch line 41 and the second branch line 42 other end link to each other with first output microstrip line 2 and second output microstrip line 3 respectively, be equipped with isolation resistance R branch line between first branch line 41 and the second branch line 42.
The utility model discloses simple structure, frequency band low frequency extend to 350MHz, and the high frequency reaches 6GHz, realizes broadband and high isolation, is a big innovation on the merit divides the ware, has good society and economic benefits.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is the utility model discloses input reflection coefficient actual measurement result curve chart.
Fig. 3 is the utility model discloses output reflection coefficient actual measurement result curve chart.
Fig. 4 is the utility model discloses output isolation actual measurement result curve chart.
Fig. 5 is a graph of the insertion loss actual measurement result of the output microstrip line of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
The ultra-wideband power divider expanded to low frequency comprises a dielectric plate, wherein an input port 1 is arranged at one end of the dielectric plate 5, a first output microstrip line 2 and a second output microstrip line 3 which are symmetrical are arranged at the other end of the dielectric plate, a first branch line 41 and a second branch line 42 which are symmetrical are arranged between the first output microstrip line 2 and the input port 1 and between the second output microstrip line 3 and the input port 1, the input port 1 is respectively connected with one end of the first branch line 41 and one end of the second branch line 42, the other end of the first branch line 41 and the other end of the second branch line 42 are respectively connected with the first output microstrip line 2 and the second output microstrip line 3, and an isolation resistor R is arranged between the first branch line 41 and the second branch line 42.
In order to ensure better implementation effect, the first branch line 41 is an integral structure formed by a first curved branch first step 411, a first branch second step 412, a first branch third step 413, a first branch fourth step 414, a first branch fifth step 415, a first branch sixth step 416, a first branch seventh step 417, a first branch eighth step 418, a first branch ninth step 419 and a first branch tenth step 41A which are connected together in sequence, the first branch first step 411 is connected with the input port 1, and the first branch tenth step 41A is connected with the first output microstrip line 2.
The second branch line 42 is an integrated structure formed by a first bent branch 421, a second branch second step 422, a second branch third step 423, a second branch fourth step 424, a second branch fifth step 425, a second branch sixth step 426, a second branch seventh step 427, a second branch eighth step 428, a second branch ninth step 429 and a second branch tenth step 42A which are connected together in sequence, the first branch 421 is connected with the input port 1, and the second branch tenth step 42A is connected with the second output microstrip line 3.
The first branch line 41 and the second branch line 42 are symmetrically arranged, and the corresponding microstrip lines have equal line length and same characteristic impedance.
The first branch first step 411 is symmetrical to the second branch first step 421 to form a branch line first step; the first branch second stage 412 is symmetrical to the second branch second stage 422 to form a branch line second stage; the first branch third stage 413 is symmetrical to the second branch third stage 423 to form a branch line third stage; the first branch fourth step 414 is symmetrical with the second branch fourth step 424 to form a branch line fourth step; the first branch fifth step 415 is symmetrical to the second branch fifth step 425 to form a branch line fifth step; the sixth branch 416 is symmetrical to the sixth branch 426 to form the sixth branch; the seventh step 417 of the first branch and the seventh step 427 of the second branch are symmetrical to form the seventh step of the branch line; the first branch eighth-step 418 is symmetrical to the second branch eighth-step 428 to form a branch line eighth-step; the ninth step 419 of the first branch is symmetrical to the ninth step 429 of the second branch to form the ninth step of the branch line; the tenth step 41A of the first branch is symmetrical to the tenth step 42A of the second branch to form a tenth step of the branch line.
The isolation resistor R comprises a first-order isolation resistor R1, a second-order isolation resistor R2, a third-order isolation resistor R3, a fourth-order isolation resistor R4, a fifth-order isolation resistor R5, a sixth-order isolation resistor R6, a seventh-order isolation resistor R7, an eighth-order isolation resistor R8, a ninth-order isolation resistor R9 and a tenth-order isolation resistor R10, wherein the first-order isolation resistor R1 is positioned at the tail end of the first order of the branch line; the second-stage isolation resistor R2 is positioned at the tail end of the second stage of the branch line; the third-order isolation resistor R3 is positioned at the tail end of the third order of the branch line; the fourth-order isolation resistor R4 is positioned at the tail end of the fourth order of the branch line; the fifth-order isolation resistor R5 is positioned at the tail end of the fifth order of the branch line; the sixth-order isolation resistor R6 is positioned at the tail end of the sixth order of the branch line; the seventh-order isolation resistor R7 is positioned at the tail end of the seventh order of the branch line; the eighth-order isolation resistor R8 is positioned at the tail end of the eighth order of the branch line; the ninth-order isolation resistor R9 is positioned at the tail end of the ninth order of the branch line; the tenth-order isolation resistor R10 is located at the end of the tenth order of the branch line.
The input port 1, the first output microstrip line 2 and the second output microstrip line 3 are all 50 Ω microstrip lines.
The utility model discloses simple structure, frequency band low frequency extend to 350MHz, and the high frequency reaches 6GHz, tests through actual system board, has obtained very good effect, is given by following embodiment, and used method is conventional method if not having the particular description in the embodiment.
Example 1:
in the present embodiment, the characteristic impedances of the input port 1, the first output microstrip line 2 and the second output microstrip line 3 are all 50 Ω; the dielectric plate is a high-speed plate Roger4350, the dielectric constant of the dielectric plate is 3.48 +/-0.05, the loss tangent is 0.0037, and the thickness of the dielectric plate is 0.762mm; the microstrip line thickness is 1oz.
In the present embodiment, the width of the input port 1, the first output microstrip line 2 and the second output microstrip line 3 is 1.63mm, and the length thereof is 4mm. The first-order microstrip line width of the branch line is 0.5mm, the second-order microstrip line width is 0.56mm, the third-order microstrip line width is 0.65mm, the fourth-order microstrip line width is 0.74mm, the fifth-order microstrip line width is 0.85mm, the sixth-order microstrip line width is 0.95mm, the seventh-order microstrip line width is 1.08mm, the eighth-order microstrip line width is 1.21mm, the ninth-order microstrip line width is 1.35mm, and the tenth-order microstrip line width is 1.5mm.
In this embodiment, the isolation resistor R1 has a resistance of 56 Ω, the isolation resistor R2 has a resistance of 220 Ω, the isolation resistor R3 has a resistance of 430 Ω, the isolation resistor R4 has a resistance of 750 Ω, the isolation resistor R5 has a resistance of 750 Ω, the isolation resistor R6 has a resistance of 910 Ω, the isolation resistor R7 has a resistance of 820 Ω, the isolation resistor R8 has a resistance of 1k Ω, the isolation resistor R9 has a resistance of 1.2k Ω, the isolation resistor R10 has a resistance of 560 Ω, and the isolation resistor packages are all 0603.
In this embodiment, the first branch line 41, the second branch line 42, the first output microstrip line 2, and the second output microstrip line 3 are welded to the input port and the two output ports using SMA.
Referring to fig. 2, it is a graph of the actual measurement result of the reflection coefficient (S11) of the input port of this embodiment. The abscissa represents frequency in GHz and the ordinate represents amplitude in decibels (dB). As can be seen in fig. 3, the reflections are all less than-15 dB, indicating that the input port is well matched within the frequency band.
Fig. 3 is a diagram of actually measured reflection coefficients (S22, S33) of the first output microstrip line and the second output microstrip line in this embodiment. The abscissa represents frequency in GHz and the ordinate represents amplitude in decibels (dB). As can be seen from fig. 4, the reflection coefficients of the first output microstrip line and the second output microstrip line are both smaller than-15 dB in the operating frequency band, which indicates that the two output ports are well matched in the frequency band.
Referring to fig. 4, which is a graph of the actually measured result of the microstrip line isolation (S23) output in this embodiment, the abscissa represents frequency in GHz, and the ordinate represents amplitude in decibel (dB). As can be seen from fig. 4, the isolation between the first output microstrip line and the second output microstrip line is greater than 16dB within the operating frequency band, which indicates that the isolation between the two output ports is good.
Referring to fig. 5, a graph of the actual measurement result of the insertion loss (S21, S31) of the output microstrip line of the present embodiment is shown. The abscissa represents frequency in GHz and the ordinate represents amplitude in decibels (dB). As can be seen from the figure, the loss is small in the operating band. At 6GHz, the port loss is maximum and is 4dB, 3dB of power distribution is subtracted, and the actual insertion loss is 1dB.
To sum up, the utility model discloses simple structure provides an ultra wide band merit that extends to low frequency and divides the ware, uses 10 th order Wilkinson merit to divide the ware, makes the frequency band low frequency extend to 350MHz, and the high frequency reaches 6GHz, realizes broadband and high isolation. And the microstrip line is bent, and the longitudinal size is reduced through the coupling relation, so that the microstrip power divider is a great innovation on power dividers and has good social and economic benefits.
Claims (7)
1. The ultra-wideband power divider expanded to low frequency comprises a dielectric plate and is characterized in that an input port 1 is arranged at one end of the dielectric plate (5), a first output microstrip line 2 and a second output microstrip line 3 which are symmetrical are arranged at the other end of the dielectric plate, a first branch line 41 and a second branch line 42 which are symmetrical are arranged between the first output microstrip line 2 and the input port 1 and between the second output microstrip line 3 and the input port 1, the input port 1 is respectively connected with one end of the first branch line 41 and one end of the second branch line 42, the other ends of the first branch line 41 and the second branch line 42 are respectively connected with the first output microstrip line 2 and the second output microstrip line 3, and an isolation resistor R is arranged between the first branch line 41 and the second branch line 42.
2. The ultra-wideband power divider expanded to low frequency according to claim 1, wherein the first branch line 41 is an integrated structure formed by a first branch first step 411, a first branch second step 412, a first branch third step 413, a first branch fourth step 414, a first branch fifth step 415, a first branch sixth step 416, a first branch seventh step 417, a first branch eighth step 418, a first branch ninth step 419 and a first branch tenth step 41A which are sequentially connected together, the first branch first step 411 is connected to the input port 1, and the first branch tenth step 41A is connected to the first output microstrip line 2.
3. The ultra-wideband power splitter expanded to a low frequency according to claim 1, wherein the second branch line 42 is an integrated structure formed by a first curved branch line 421, a second branch line 422, a third curved branch line 423, a fourth curved branch line 424, a fifth curved branch line 425, a sixth curved branch line 426, a seventh curved branch line 427, an eighth curved branch line 428, a ninth curved branch line 429 and a tenth curved branch line 42A, which are connected together in sequence, the first branch line 421 is connected to the input port 1, and the tenth curved branch line 42A is connected to the second output microstrip line 3.
4. The ultra-wideband power divider extended to low frequency according to claim 1, wherein the first branch line 41 and the second branch line 42 are symmetrically arranged, and the corresponding microstrip lines have equal line length and equal characteristic impedance.
5. The ultra-wideband power divider extended to low frequencies of claim 4, wherein the first branch first step 411 is symmetrical to the second branch first step 421 to form a branch line first step; the first branch second stage 412 is symmetrical to the second branch second stage 422 to form a branch line second stage; the first branch third stage 413 and the second branch third stage 423 are symmetrical to form a branch line third stage; the first branch fourth step 414 is symmetrical with the second branch fourth step 424 to form a branch line fourth step; the first branch fifth step 415 is symmetrical to the second branch fifth step 425 to form a branch line fifth step; the sixth branch 416 is symmetrical to the sixth branch 426 to form the sixth branch; the seventh step 417 of the first branch and the seventh step 427 of the second branch are symmetrical to form the seventh step of the branch line; the first branch eighth-step 418 is symmetrical to the second branch eighth-step 428 to form a branch line eighth-step; the ninth step 419 of the first branch is symmetrical to the ninth step 429 of the second branch to form the ninth step of the branch line; the tenth step 41A of the first branch is symmetrical to the tenth step 42A of the second branch to form a tenth step of the branch line.
6. The ultra-wideband power divider expanded to low frequency according to claim 1, wherein the isolation resistor R includes a first-order isolation resistor R1, a second-order isolation resistor R2, a third-order isolation resistor R3, a fourth-order isolation resistor R4, a fifth-order isolation resistor R5, a sixth-order isolation resistor R6, a seventh-order isolation resistor R7, an eighth-order isolation resistor R8, a ninth-order isolation resistor R9, and a tenth-order isolation resistor R10, and the first-order isolation resistor R1 is located at the end of the first order of the branch line; the second-stage isolation resistor R2 is positioned at the tail end of the second stage of the branch line; the third-order isolation resistor R3 is positioned at the tail end of the third order of the branch line; the fourth-order isolation resistor R4 is positioned at the tail end of the fourth order of the branch line; the fifth-order isolation resistor R5 is positioned at the tail end of the fifth order of the branch line; the sixth-order isolation resistor R6 is positioned at the end of the sixth order of the branch line; the seventh-order isolation resistor R7 is positioned at the tail end of the seventh order of the branch line; the eighth-order isolation resistor R8 is positioned at the tail end of the eighth order of the branch line; the ninth-order isolation resistor R9 is positioned at the tail end of the ninth order of the branch line; the tenth-step isolation resistor R10 is located at the end of the tenth step of the branch line.
7. The ultra-wideband power divider extended to low frequency according to claim 1, wherein the input port 1, the first output microstrip line 2 and the second output microstrip line 3 are all 50 Ω microstrip lines.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222023382.2U CN217983631U (en) | 2022-08-03 | 2022-08-03 | Ultra-wideband power divider capable of expanding to low frequency |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222023382.2U CN217983631U (en) | 2022-08-03 | 2022-08-03 | Ultra-wideband power divider capable of expanding to low frequency |
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| CN217983631U true CN217983631U (en) | 2022-12-06 |
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| CN202222023382.2U Active CN217983631U (en) | 2022-08-03 | 2022-08-03 | Ultra-wideband power divider capable of expanding to low frequency |
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