CN114497952A - Power divider with higher harmonic suppression characteristic and design method thereof - Google Patents
Power divider with higher harmonic suppression characteristic and design method thereof Download PDFInfo
- Publication number
- CN114497952A CN114497952A CN202111681354.3A CN202111681354A CN114497952A CN 114497952 A CN114497952 A CN 114497952A CN 202111681354 A CN202111681354 A CN 202111681354A CN 114497952 A CN114497952 A CN 114497952A
- Authority
- CN
- China
- Prior art keywords
- microstrip line
- line group
- transmission line
- isolation
- output port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000001629 suppression Effects 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000013461 design Methods 0.000 title claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 85
- 238000002955 isolation Methods 0.000 claims abstract description 67
- 230000008054 signal transmission Effects 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 5
- PCTMTFRHKVHKIS-BMFZQQSSSA-N (1s,3r,4e,6e,8e,10e,12e,14e,16e,18s,19r,20r,21s,25r,27r,30r,31r,33s,35r,37s,38r)-3-[(2r,3s,4s,5s,6r)-4-amino-3,5-dihydroxy-6-methyloxan-2-yl]oxy-19,25,27,30,31,33,35,37-octahydroxy-18,20,21-trimethyl-23-oxo-22,39-dioxabicyclo[33.3.1]nonatriaconta-4,6,8,10 Chemical compound C1C=C2C[C@@H](OS(O)(=O)=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2.O[C@H]1[C@@H](N)[C@H](O)[C@@H](C)O[C@H]1O[C@H]1/C=C/C=C/C=C/C=C/C=C/C=C/C=C/[C@H](C)[C@@H](O)[C@@H](C)[C@H](C)OC(=O)C[C@H](O)C[C@H](O)CC[C@@H](O)[C@H](O)C[C@H](O)C[C@](O)(C[C@H](O)[C@H]2C(O)=O)O[C@H]2C1 PCTMTFRHKVHKIS-BMFZQQSSSA-N 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 abstract description 3
- 238000004891 communication Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000001914 filtration Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Images
Classifications
-
- 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
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Non-Reversible Transmitting Devices (AREA)
- Microwave Amplifiers (AREA)
Abstract
The invention provides a power divider with higher harmonic suppression characteristic and a design method thereof, wherein the power divider comprises: the microstrip line layer is used for signal transmission in the circuit; the power distribution circuit comprises a cascade structure and an isolation transmission line group, the power distribution circuit is arranged on the microstrip line layer, the cascade structure comprises a transverse transmission line group and a plurality of longitudinal open-circuit line groups, the transverse transmission line group is arranged along the signal transmission direction and used for providing power distribution and signal transmission, the longitudinal open-circuit line group is used for providing higher harmonic suppression characteristics, and the isolation transmission line group is arranged between the transverse transmission line groups; and the isolation resistor is arranged on the isolation transmission line group and used for providing isolation characteristics among the output ports of the microstrip line layer. The invention can solve the problems of radiation loss and miniaturization, and provides theoretical basis and guidance for the design of the power divider with higher harmonic suppression.
Description
Technical Field
The invention belongs to the technical field of power dividers, and particularly relates to a power divider with a higher harmonic suppression characteristic and a design method thereof.
Background
With the development of communication technology, especially 5G communication technology, people have more and more demands on communication systems, and the requirements on the stability and accuracy of the systems are also increasingly increased no matter for civil communication systems or military radar systems. The power divider is a device capable of dividing one path of signal into two paths or multiple paths, and has wide application in communication systems, radar antenna systems and radio frequency front end systems. The performance of the power divider greatly affects the stability of the whole communication system and the quality of signal transmission. As the operating frequency band of the communication system increases and the allocation of spectrum resources is tight, the crosstalk in the communication system increases, the requirements on the power divider are higher and higher, and the requirements on the suppression of out-of-band signals, especially the suppression of higher harmonics, are also higher and higher.
In the prior art, the power divider is mainly divided into a microstrip structure and a waveguide structure. The power divider with the microstrip structure has the advantages that: the circuit has the advantages of simple structure, small volume, low cost and stable performance. Power splitters with higher harmonic suppression for existing microstrip structures are realized mainly by Defected Ground Structures (DGS). However, the defected structure can generate large radiation loss, especially in high frequency band, which is not favorable for integration in complex communication system and high frequency working environment.
For example, patent publication No. CN105098303A discloses a power divider with dual-band filtering function, which includes an upper microstrip structure, an isolation resistor, an intermediate dielectric substrate and a bottom metal floor; the upper microstrip structure comprises four resonators, three feeder lines and an isolation resistor. The upper layer microstrip structure is arranged into two band-pass filter circuits which are symmetrical up and down. The characteristic of double-passband filtering with adjustable center frequency can be realized, and the power distribution ratio is 1: 1, power divider characteristics; the resonator adopts a branch on a quarter-wavelength short-circuit line resonator, and realizes the dual-frequency band-pass filtering characteristic with independently controllable central frequency by adjusting the length of each branch. However, it is difficult to satisfy both the integration level and the band-pass characteristic by adjusting the length of the branch, and the requirement for suppressing the higher harmonics of the power divider needs to be continuously studied.
Disclosure of Invention
The present invention is directed to a power divider with higher harmonic suppression and a design method thereof, so as to solve the problems mentioned in the background art.
The invention provides the following technical scheme:
the application provides a power divider with higher harmonic suppression characteristics, includes:
the microstrip line layer is used for signal transmission in the circuit;
the power distribution circuit comprises a cascade structure and an isolation transmission line group, the power distribution circuit is arranged on the microstrip line layer, the cascade structure comprises a transverse transmission line group and a plurality of longitudinal open-circuit line groups, the transverse transmission line group is arranged along the signal transmission direction and used for providing power distribution and signal transmission, the longitudinal open-circuit line group is used for providing higher harmonic suppression characteristics, and the isolation transmission line group is arranged between the transverse transmission line groups;
and the isolation resistor is arranged on the isolation transmission line group and used for providing isolation characteristics among the output ports of the microstrip line layer.
Preferably, the microstrip line further comprises a substrate and a ground metal layer, the microstrip line layer and the ground metal layer are respectively disposed on opposite sides of the substrate, and the ground metal layer is a copper layer.
Preferably, the cascade structure further includes a first input port, a second output port, and a third output port, and the cascade structure includes a first path of three-section pi structure and a second path of three-section pi structure that are set up oppositely, one end of the first path of three-section pi structure and one end of the second path of three-section pi structure are connected to the first input port, and the other ends are connected to the second output port and the third output port, respectively.
Preferably, the transverse transmission line group comprises a fourth microstrip line and a twelfth microstrip line and is in a lateral U shape, two ends of the fourth microstrip line are respectively connected with the first input port and the second output port, and two ends of the twelfth microstrip line are respectively connected with the first input port and the third output port.
Preferably, the longitudinal open circuit line group includes a first microstrip line group and a second microstrip line group, the first microstrip line group is vertically arranged on the fourth microstrip line, the second microstrip line group is vertically arranged on the twelfth microstrip line, and the first microstrip line group and the second microstrip line group have different electrical lengths, and are used for controlling out-of-band rejection through different electrical lengths, breaking the cycle of the power divider, and generating transmission zeros at different frequencies.
Preferably, the isolation transmission line group includes an eighth isolation transmission line and a sixteenth isolation transmission line, the eighth isolation transmission line is vertically disposed at one end of the fourth microstrip line close to the second output port, the sixteenth isolation transmission line is vertically disposed at one end of the twelfth microstrip line close to the third output port, a gap is left between the eighth isolation transmission line and the sixteenth isolation transmission line, and the isolation resistor is disposed between the eighth isolation transmission line and the sixteenth isolation transmission line.
Based on the power divider with the higher harmonic suppression characteristic, the application also provides a design method based on the power divider with the higher harmonic suppression characteristic, which comprises the following steps:
s1, normalizing all characteristic impedances and resistances of a transverse transmission line group, a longitudinal open circuit line group and an isolation transmission line group, and normalizing the characteristic impedances of a first input port, a second output port and a third output port to a constant M;
s2, the cascade structure is equivalent to a micro-section transmission line at the central frequency, and the characteristic impedance Z of the cascade structuretotAnd an electrical length of thetatotEquivalent at the center frequency, i.e. both ABCD matrices are equal at the center frequency, the correlation expression of characteristic impedance and electrical length is as follows:
wherein ,
ZT and θTCharacteristic impedance and electrical length, Z, of the fourth and twelfth microstrip lines, respectivelyS1、ZS2、ZS3 and ZS4Respectively is the characteristic impedance theta of four longitudinal open lines in the first microstrip line group and the second microstrip line groupS1、θS2、θS3 and θS4Respectively the electrical length S of the four longitudinal open lines in the first microstrip line group and the second microstrip line group11Representing the reflection coefficient of the first input port; s21Representing a transmission coefficient from the first input port to the second output port; s. the22A reflection coefficient representing a second output port; s32Representing the transmission coefficient from the second output port to the third output port, wherein S11 and S21For measuring the transfer characteristics of the device; s22 and S32For measuring the isolation characteristics of the device;
s3, performing odd-even mode equivalent analysis on the power distribution line to realize matching of the power distribution line at the center frequency, wherein the matching relationship is as follows: zinetot＝1&Zinotot＝0，
wherein ,
Zino1＝jZtottanθ，
Zinetotis the characteristic impedance of the even-mode equivalent circuit, Zine1Equivalent characteristic impedance of a cascade structure in an even mode equivalent circuit; zinototCharacteristic impedance of odd-mode equivalent circuit, Zino1Equivalent characteristic impedance of a cascade structure in an odd-mode equivalent circuit; ziso and θisoCharacteristic impedance and electrical length, R, of the isolated transmission line group, respectivelyisoIs the resistance value of the isolation resistor;
and S4, selecting the electrical length of the longitudinal open-circuit wire group and the electrical length of the isolation transmission wire group in the cascade structure to regulate and control the out-of-band zero point.
The invention has the beneficial effects that:
1. the transmission characteristic of the power distributor at the central frequency is realized through the two-way three-section pi structure, the transverse transmission line group and the longitudinal open-circuit line group, the longitudinal open-circuit line group inhibits higher harmonics of signals, a wide stop band and a better stop band inhibition degree are realized, the radiation loss is smaller compared with a defected ground structure, and the miniaturization of a device is realized;
2. two paths of three-section pi structures close to the two output ports are connected through an isolation resistor, so that higher isolation characteristics are realized in a pass band;
3. by selecting the electric length of the microstrip line which accords with the matching relation, the power divider with any central frequency and any higher harmonic suppression range can be designed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic circuit diagram of the power distribution circuitry of the present invention;
fig. 2 is an equivalent schematic diagram of a three-segment Π structure and isolated transmission line of the present invention;
FIG. 3 is an even mode equivalent circuit diagram of the present invention;
FIG. 4 is an odd-mode equivalent circuit diagram of the present invention;
FIG. 5 is a circuit simulation result parameter S of the present invention11 and S21A schematic diagram;
FIG. 6 is a circuit simulation result parameter S of the present invention22 and S32A schematic diagram; (ii) a
FIG. 7 is a power distribution circuit layout of the present invention;
FIG. 8 is a power divider test result parameter S according to an embodiment of the present invention11 and S21A schematic diagram;
FIG. 9 shows the test result parameter S of the power divider in the embodiment of the present invention22 and S32Schematic representation.
Detailed Description
As shown in fig. 1 and 6, the present application provides a power divider having a higher harmonic suppression characteristic, including:
and the microstrip line layer is used for signal transmission in the circuit.
The power distribution line comprises a cascade structure and an isolation transmission line group, the power distribution line is arranged on the microstrip line layer, the cascade structure comprises a transverse transmission line group and a plurality of longitudinal open-circuit line groups, the transverse transmission line group is arranged along the signal transmission direction and used for providing power distribution and signal transmission, the longitudinal open-circuit line group is used for providing higher harmonic suppression characteristics, and the isolation transmission line group is arranged between the transverse transmission line groups.
As shown in fig. 1, fig. 2, and fig. 7, the cascade structure further includes a first input port 1, a second output port 2, and a third output port 3, the cascade structure includes a first path of three-stage pi structure and a second path of three-stage pi structure, which are set oppositely, one end of the first path of three-stage pi structure and one end of the second path of three-stage pi structure are connected to the first input port 1, and the other ends are connected to the second output port 2 and the third output port 3, respectively.
As shown in fig. 7, the transverse transmission line group includes a fourth microstrip line 4 and a twelfth microstrip line 12, and is in a lateral U shape, two ends of the fourth microstrip line 4 are respectively connected to the first input port 1 and the second output port 2, and two ends of the twelfth microstrip line 12 are respectively connected to the first input port 1 and the third output port 3.
As shown in fig. 7, the longitudinal open circuit line group includes a first microstrip line group and a second microstrip line group, the first microstrip line group is vertically disposed on the fourth microstrip line 4, the second microstrip line group is vertically disposed on the twelfth microstrip line 12, and the first microstrip line group and the second microstrip line group have different electrical lengths, and are used for controlling out-of-band rejection through different electrical lengths, breaking the cycle of the power divider, and generating transmission zeros at different frequencies.
As shown in fig. 7, the first path three-segment Π structure includes a fourth microstrip line 4, a fifth microstrip line 5, a sixth microstrip line 6, a seventh microstrip line 7, and a tenth microstrip line 10, where the fourth microstrip line 4 serves as a transverse transmission line, and the rest serve as a longitudinal open-circuit line. The second three-section pi structure comprises a twelfth microstrip line 12, a fifteenth microstrip line 15, a fourteenth microstrip line 14, a thirteenth microstrip line 13 and an eleventh microstrip line 11, the fourth microstrip line 4 is used as a transverse transmission line, the rest are used as longitudinal open-circuit lines, and the characteristic impedance and the electrical length of the microstrip lines at the symmetrical positions are the same.
As shown in fig. 7, the isolation transmission line group includes an eighth isolation transmission line 8 and a sixteenth isolation transmission line 16, the eighth isolation transmission line 8 is vertically disposed on one end of the fourth microstrip line 4 close to the second output port 2, the sixteenth isolation transmission line 16 is vertically disposed on one end of the twelfth microstrip line 12 close to the third output port 3, and a gap is left between the eighth isolation transmission line 8 and the sixteenth isolation transmission line 16.
And the isolation resistor 9 is arranged on the isolation transmission line group and used for providing isolation characteristics among the output ports of the microstrip line layer. An isolation resistor 9 is provided between the eighth isolated transmission line 8 and the sixteenth isolated transmission line 16.
The microstrip line layer and the grounding metal layer are respectively arranged on the opposite sides of the substrate, and the grounding metal layer is a copper layer.
Based on the power divider with the higher harmonic suppression characteristic, the application also provides a design method based on the power divider with the higher harmonic suppression characteristic, which comprises the following steps:
s1, normalizing all characteristic impedances and resistances of a transverse transmission line group, a longitudinal open circuit line group and an isolation transmission line group, and normalizing the characteristic impedances of a first input port 1, a second output port 2 and a third output port 3 to a constant M, wherein M is 1 omega;
s2, the cascade structure is equivalent to a section of transmission line at the central frequency, and the characteristic impedance Z of the cascade structuretotAnd an electrical length of thetatotEquivalent at the center frequency, i.e. both ABCD matrices are equal at the center frequency, the correlation expression for characteristic impedance and electrical length is as follows:
wherein ,
ZT and qTCharacteristic impedance and electrical length, Z, of the fourth microstrip line 4 and the twelfth microstrip line 12, respectivelyS1、ZS2、ZS3 and ZS4The characteristic impedances of the four longitudinal open paths in the first microstrip line group and the second microstrip line group are respectively, namely the characteristic impedances of a tenth microstrip line 10, a fifth microstrip line 5, a sixth microstrip line 6 and a seventh microstrip line 7 in sequence, or the characteristic impedances of an eleventh microstrip line 11, a thirteenth microstrip line 13, a fourteenth microstrip line 14 and a fifteenth microstrip line 15 in sequence; thetaS1、θS2、θS3 and θS4The electrical lengths of the four longitudinal open paths in the first microstrip line group and the second microstrip line group are respectively, namely the electrical lengths of a tenth microstrip line 10, a fifth microstrip line 5, a sixth microstrip line 6 and a seventh microstrip line 7 in sequence, or the electrical lengths of an eleventh microstrip line 11, a thirteenth microstrip line 13, a fourteenth microstrip line 14 and a fifteenth microstrip line 15 in sequence; s11Represents the reflection coefficient of the first input port 1; s21Representing the transmission coefficient from the first input port 1 to the second output port 2; s22Representing the reflection coefficient of the second output port 2; s32Represents the transmission coefficient from the second output port 2 to the third output port 3, wherein S11 and S21For measuring the transfer characteristics of the device; s22 and S32For measuring the isolation characteristics of the device;
as shown in fig. 3-4, s3, performing parity-module equivalent analysis on the power distribution line to implement matching of the power distribution line at the center frequency, where the matching relationship is: zinetot＝1&Zinotot＝0，
wherein ,
Zino1＝jZtottanθ，
Zinetotis the characteristic impedance of the even-mode equivalent circuit, Zine1Is equivalent characteristic impedance of cascade structure in even-mode equivalent circuit；ZinototCharacteristic impedance of odd-mode equivalent circuit, Zino1Equivalent characteristic impedance of a cascade structure in an odd-mode equivalent circuit; ziso and θisoCharacteristic impedance and electrical length, R, of the isolated transmission line group, respectivelyisoIs the resistance value of the isolation resistor 9;
and S4, selecting the electrical length of the longitudinal open-circuit wire group and the electrical length of the isolation transmission wire group in the cascade structure to regulate and control the out-of-band zero point.
In the embodiment, values of each characteristic impedance and electrical length are shown in table 1, the isolation resistor 9 is normalized to 1.3334 Ω, and four electrical lengths of 7 °, 10 °, 17 °, and 25 ° are adopted in selecting the electrical length of the longitudinal open-circuit line set, so that the period of the whole circuit is improved while the out-of-band zero point is generated, and good higher harmonic suppression characteristics are provided. The simulation results are shown in fig. 5-6, and at the center frequency of 1GHz, the power divider of the application has good power distribution characteristics and isolation characteristics; in the frequency range of 3 GHz-10 GHz, S21Has 6 transmission zeros, and S21Is lower than-20 dB, good higher harmonic suppression characteristics can be achieved.
TABLE 1 values for characteristic impedances and electrical lengths
| Characteristic impedance (W) | Electrical length (°) |
| ZT＝2.1701 | θT＝20 |
| Ziso＝1.1547 | θiso＝30 |
| ZS1＝0.5248 | θS1＝7 |
| ZS2＝0.3768 | θS2＝10 |
| ZS3＝0.6534 | θS3＝17 |
| ZS4＝1.9931 | θS4＝25 |
Meanwhile, the power divider is prepared and tested. The layout of the power distribution circuit using the Rogers board with a dielectric constant of 2.2 and a thickness of 0.787mm is shown in FIG. 7, and the test results are shown in FIGS. 8-9. As shown in fig. 8-9, the method proposed in this example can design a power divider with good out-of-band higher harmonic suppression characteristics, and the prepared power divider has good transmission characteristics and isolation in the pass band, the frequency of the out-of-band suppression for the higher harmonics can reach 10 times the center frequency, and the out-of-band suppression degree reaches-25 dB.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A power divider having higher harmonic rejection characteristics, comprising: the method comprises the following steps:
the microstrip line layer is used for signal transmission in the circuit;
the power distribution circuit comprises a cascade structure and an isolation transmission line group, the power distribution circuit is arranged on the microstrip line layer, the cascade structure comprises a transverse transmission line group and a plurality of longitudinal open-circuit line groups, the transverse transmission line group is arranged along the signal transmission direction and used for providing power distribution and signal transmission, the longitudinal open-circuit line group is used for providing higher harmonic suppression characteristics, and the isolation transmission line group is arranged between the transverse transmission line groups;
and the isolation resistor is arranged on the isolation transmission line group and used for providing isolation characteristics among the output ports of the microstrip line layer.
2. A power divider with higher harmonic rejection characteristics as claimed in claim 1, wherein: the microstrip line layer and the grounding metal layer are respectively arranged on the opposite sides of the substrate, and the grounding metal layer is a copper layer.
3. A power divider with higher harmonic rejection characteristics as claimed in claim 1 or 2, wherein: the cascade structure further comprises a first input port, a second output port and a third output port, the cascade structure comprises a first path of three-section n structure and a second path of three-section n structure which are oppositely arranged, one end of the first path of three-section n structure and one end of the second path of three-section n structure are connected with the first input port, and the other ends of the first path of three-section n structure and the second path of three-section n structure are respectively connected with the second output port and the third output port.
4. A power divider with higher harmonic rejection characteristics as claimed in claim 3, wherein: the transverse transmission line group comprises a fourth microstrip line and a twelfth microstrip line and is in a lateral U shape, two ends of the fourth microstrip line are respectively connected with the first input port and the second output port, and two ends of the twelfth microstrip line are respectively connected with the first input port and the third output port.
5. A power divider with higher harmonic rejection characteristics as claimed in claim 4, wherein: the longitudinal open circuit line group comprises a first microstrip line group and a second microstrip line group, the first microstrip line group is vertically arranged on the fourth microstrip line, the second microstrip line group is vertically arranged on the twelfth microstrip line, the first microstrip line group and the second microstrip line group are different in electrical length and are used for controlling out-of-band suppression through different electrical lengths, the period of the power distributor is broken, and transmission zero points are generated at different frequencies.
6. A power divider with higher harmonic rejection characteristics as claimed in claim 5, wherein: the isolation transmission line group comprises an eighth isolation transmission line and a sixteenth isolation transmission line, the eighth isolation transmission line is vertically arranged at one end, close to the second output port, of the fourth microstrip line, the sixteenth isolation transmission line is vertically arranged at one end, close to the third output port, of the twelfth microstrip line, a gap is reserved between the eighth isolation transmission line and the sixteenth isolation transmission line, and the isolation resistor is arranged between the eighth isolation transmission line and the sixteenth isolation transmission line.
7. A design method using the power divider with higher harmonic suppression characteristics according to any one of claims 1 to 6, characterized in that: the method comprises the following steps:
s1, normalizing all characteristic impedances and resistances of a transverse transmission line group, a longitudinal open circuit line group and an isolation transmission line group, and normalizing the characteristic impedances of a first input port, a second output port and a third output port to a constant M;
s2, the cascade structure is equivalent to a micro-section transmission line at the central frequency, and the characteristic impedance Z of the cascade structuretotAnd an electrical length of thetatotEquivalent at the center frequency, i.e. both ABCD matrices are equal at the center frequency, the correlation expression of characteristic impedance and electrical length is as follows:
wherein ,
ZT and θTCharacteristic impedance and electrical length, Z, of the fourth and twelfth microstrip lines, respectivelyS1、ZS2、ZS3 and ZS4Respectively is the characteristic impedance theta of four longitudinal open lines in the first microstrip line group and the second microstrip line groupS1、θS2、θS3 and θS4Respectively the electrical length S of the four longitudinal open lines in the first microstrip line group and the second microstrip line group11Representing the reflection coefficient of the first input port; s21Representing a transmission coefficient from the first input port to the second output port; s22A reflection coefficient representing a second output port; s32Representing the transmission coefficient from the second output port to the third output port, wherein S11 and S21For measuring the transfer characteristics of the device; s22 and S32For measuring the isolation characteristics of the device;
s3, performing odd-even mode equivalent analysis on the power distribution line to realize matching of the power distribution line at the center frequency, wherein the matching relationship is as follows: z is a linear or branched memberinetot＝1&Zinotot＝0，
wherein ,
Zino1＝jZtottanθ，
Zinetotcharacteristic impedance of even-mode equivalent circuit, Zine1Equivalent characteristic impedance of a cascade structure in an even mode equivalent circuit; zinototFor the characteristic impedance of the odd-mode equivalent circuit,Zino1equivalent characteristic impedance of a cascade structure in an odd-mode equivalent circuit; ziso and θisoCharacteristic impedance and electrical length, R, of the isolated transmission line group, respectivelyisoIs the resistance value of the isolation resistor;
and S4, selecting the electrical length of the longitudinal open-circuit wire group in the cascade structure and the electrical length of the isolation transmission line to regulate and control the out-of-band zero point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111681354.3A CN114497952B (en) | 2021-12-31 | 2021-12-31 | Power divider with higher harmonic suppression characteristic and design method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111681354.3A CN114497952B (en) | 2021-12-31 | 2021-12-31 | Power divider with higher harmonic suppression characteristic and design method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114497952A true CN114497952A (en) | 2022-05-13 |
| CN114497952B CN114497952B (en) | 2023-05-16 |
Family
ID=81510531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111681354.3A Active CN114497952B (en) | 2021-12-31 | 2021-12-31 | Power divider with higher harmonic suppression characteristic and design method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114497952B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117497989A (en) * | 2024-01-03 | 2024-02-02 | 南京迈矽科微电子科技有限公司 | Power distributor and electronic equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2300750A1 (en) * | 2000-03-16 | 2001-09-16 | Itf Optical Technologies Inc.-Technologies Optiques Itf Inc. | All-fiber machzehnder interferometer and method of making the same |
| CN101034898A (en) * | 2007-02-23 | 2007-09-12 | 鞍山吉兆电子有限公司 | Micro-band technical broadband power allocation/synthesizer |
| CN102544675A (en) * | 2012-01-13 | 2012-07-04 | 重庆邮电大学 | Double-frequency unequal power divider |
| US20150280305A1 (en) * | 2014-03-27 | 2015-10-01 | Hon Hai Precision Industry Co., Ltd. | Power processing circuit and multiplex amplification circuit |
| CN113193322A (en) * | 2021-04-09 | 2021-07-30 | 电子科技大学 | Improved Wilkinson power divider |
-
2021
- 2021-12-31 CN CN202111681354.3A patent/CN114497952B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2300750A1 (en) * | 2000-03-16 | 2001-09-16 | Itf Optical Technologies Inc.-Technologies Optiques Itf Inc. | All-fiber machzehnder interferometer and method of making the same |
| CN101034898A (en) * | 2007-02-23 | 2007-09-12 | 鞍山吉兆电子有限公司 | Micro-band technical broadband power allocation/synthesizer |
| CN102544675A (en) * | 2012-01-13 | 2012-07-04 | 重庆邮电大学 | Double-frequency unequal power divider |
| US20150280305A1 (en) * | 2014-03-27 | 2015-10-01 | Hon Hai Precision Industry Co., Ltd. | Power processing circuit and multiplex amplification circuit |
| CN113193322A (en) * | 2021-04-09 | 2021-07-30 | 电子科技大学 | Improved Wilkinson power divider |
Non-Patent Citations (1)
| Title |
|---|
| SAEEDEH LOTFI等: "Wilkinson Power Divider with Band-pass Filtering Response and Harmonics Suppression Using Open and Short Stubs", 《FREQUENZ 2020》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117497989A (en) * | 2024-01-03 | 2024-02-02 | 南京迈矽科微电子科技有限公司 | Power distributor and electronic equipment |
| CN117497989B (en) * | 2024-01-03 | 2024-03-08 | 南京迈矽科微电子科技有限公司 | Power distributor and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114497952B (en) | 2023-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Deng et al. | New Wilkinson power dividers based on compact stepped-impedance transmission lines and shunt open stubs | |
| KR20100004440A (en) | Power divider and combiner using lumped elements | |
| EP2984702A1 (en) | Miniature radio frequency directional coupler for cellular applications | |
| CN113193316B (en) | Non-reflection band-pass filter based on double-sided parallel strip lines | |
| KR102289944B1 (en) | Composite L-Type TL for Spurious Band Suppression in Dual Band Power Divider | |
| CN108123196B (en) | Broadband filtering integrated stereo balun based on vertical double-sided parallel strip lines | |
| CN107634294A (en) | A kind of new wideband power distributor with filtering characteristic | |
| CN114497952B (en) | Power divider with higher harmonic suppression characteristic and design method thereof | |
| CN112838840B (en) | Broadband equal-power distribution/synthesis circuit topology with broadband deep isolation | |
| Wang et al. | Miniaturized coupled-line couplers using uniplanar synthesized coplanar waveguides | |
| CN114512779B (en) | High-selectivity broadband LTCC (low temperature co-fired ceramic) filtering power divider integrated chip | |
| CN111682292B (en) | Four-way power division filter based on four-mode resonator | |
| CN115173014A (en) | Broadband and hybrid one-to-four power divider | |
| CN113659297A (en) | High-power microwave equalizer | |
| Mohamed et al. | Compact Wilkinson power divider with Inductive loaded microstrip line for harmonics suppression | |
| CN112713378A (en) | Ultra-wideband miniaturized power divider, design method and multi-channel communication network terminal | |
| CN105762477A (en) | X-waveband high-temperature superconducting triplexer with multi-branch coupling structure and manufacturing method thereof | |
| Kumar et al. | Miniaturization and Harmonic Suppression of Power Divider using Coupled Line Section for High Power Applications. | |
| Farah et al. | A DESIGN OF COMPACT MICROWAVE DIPLEXER IN MICROSTRIP TECHNOLOGY BASED ON BAND-STOP FILTERS USING STEPPED IMPEDANCE RESONATOR | |
| KR100261039B1 (en) | Directional coupler having high directivity | |
| Wang et al. | Design and performance of a novel miniaturized LTCC Wilkinson power divider | |
| Heidari et al. | DGS for a Wilkinson power divider using a symmetric butterfly comb | |
| CN112994641B (en) | LTCC-based dual-frequency band-pass filter chip | |
| CN115548621B (en) | On-chip parallel line coupler based on silicon substrate process | |
| CN217590766U (en) | Low-pass filter chip based on IPD technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |