CN205911412U - Power distribution unit - Google Patents

Abstract

The utility model provides a power distribution unit. Power distribution unit includes input, first output, second output, first transmission line, second transmission line, two third transmission lines, two fourth transmission lines and buffer circuit, the input is connected to second transmission line one end, and first output is connected to the other end, second transmission line and input are connected a parallelly connected third transmission line of one end and parallelly connected fourth transmission line, the other end ground connection of third transmission line, second transmission line and first output are connected a parallelly connected third transmission line of one end and parallelly connected fourth transmission line, the other end ground connection of third transmission line, the input is connected to the one end of first transmission line, and the second output is connected to the other end, be connected with buffer circuit between first output and the second output. Therefore, the utility model provides a technical scheme can solve the problem that current power distribution unit is difficult to realize arbitrary power distribution ratio.

Description

A kind of power divider

[technical field]

This utility model is related to power divider technical field, more particularly, to a kind of power divider.

[background technology]

At present, power divider is widely used in microwave communication, satellite communication, missile guidance, radar, electronic countermeasure, surveys In the systems such as test instrument instrument, Main Function is that subordinate's cascade that the microwave power of working frequency range is distributed to different ways sets Standby, thus realizing distribution or the synthesis of power.

Existing power divider mainly includes using microstrip design broad frequency band wilkinson power divider and adopts The gysel power divider being parallel form with microstrip design and isolation resistance.In order to realize anti-phase power divider Reversed nature, typically adopts micro-strip-slot line structure, coplanar waveguide structure and parallel strips isoequilibrium transmission line mode.

During realizing this utility model, inventor finds that in prior art, at least there are the following problems:

Existing power divider typically realizes power distribution using short-circuit parallel coupled line, is physically difficult to relatively High power-division ratios and relatively low power-division ratios, i.e. the design of existing power divider is difficult to any power distribution Than.

[utility model content]

In view of this, this utility model provides a kind of power divider, is difficult in order to solve existing power divider Realize the problem of any power-division ratios.

On the one hand, this utility model provides a kind of power divider, and described power divider includes input, first defeated Go out end, the second outfan, the first transmission line, the second transmission line, two article of the 3rd transmission line, two article of the 4th transmission line and isolation electricity Road；

Described second transmission line one end connects described input, and the other end connects described first outfan；

One end that described second transmission line is connected with described input one article of the 3rd transmission line of parallel connection and one article the 4th in parallel Transmission line, the other end ground connection of described 3rd transmission line；

One end that described second transmission line is connected with described first outfan one article of the 3rd transmission line of parallel connection and one article in parallel 4th transmission line, the other end ground connection of described 3rd transmission line；

One end of described first transmission line connects described input, and the other end connects described second outfan；

It is connected with described isolation circuit between described first outfan and described second outfan.

Aspect as above and arbitrary possible implementation, it is further provided a kind of implementation, described isolation electricity Road includes: the 5th transmission line, the 6th transmission line and isolation resistance；

One end of described 5th transmission line connects described first outfan, and the other end connects described 6th transmission line；

The other end of described 6th transmission line connects described second outfan.

Aspect as above and arbitrary possible implementation, it is further provided a kind of implementation, described isolation electricity One end ground connection of resistance, the other end is connected between described 5th transmission line and described 6th transmission line.

Aspect as above and arbitrary possible implementation, it is further provided a kind of implementation, described 5th biography Defeated line is identical with described first transmission line.

One of technique scheme technical scheme has the advantages that

In this utility model, power divider adopts the circuit structure of micro-strip, and microstrip circuit structure is planar structure, easily Carry out integrated with other microwave components or circuit, motility is higher, can reduce integrated cost, and, this utility model provides Power divider in, have good reversed nature between the first outfan and the second outfan；And, in this utility model, Only need to reasonably select the characteristic impedance of transmission line specified and electrical length to divide it is possible to realize power in power divider The arbitrary target power-division ratios of orchestration, simple and feasible in terms of physics realization.Therefore, this utility model solves existing work( Rate allotter is difficult to the problem of any power-division ratios.

[brief description]

In order to be illustrated more clearly that the technical solution of the utility model, below by the accompanying drawing to use required in embodiment Be briefly described it should be apparent that, drawings in the following description be only some embodiments of the present utility model, for ability For the those of ordinary skill of domain, without having to pay creative labor, can also be other according to the acquisition of these accompanying drawings Accompanying drawing.

Fig. 1 is the circuit topological structure figure of the power divider that this utility model provides；

Fig. 2 is the even mould schematic equivalent circuit of the power divider in the case of input 11 excitation in this utility model；

Fig. 3 is the power divider that this utility model provides is 2ghz in operating frequency, target power distribution ratio k²During for 1 Frequency response schematic diagram；

Fig. 4 is the power divider that this utility model provides is 2ghz in operating frequency, target power distribution ratio k²During for 1 Output port phase angle schematic diagram；

Fig. 5 is the power divider providing for this utility model is 1ghz in operating frequency, target power distribution ratio k²For 2 When frequency response schematic diagram；

Fig. 6 is the power divider that this utility model provides is 1ghz in operating frequency, target power distribution ratio k²During for 2 Output port phase angle schematic diagram；

Fig. 7 is the power divider that this utility model provides is 2ghz in operating frequency, target power distribution ratio k²During for 4 Frequency response schematic diagram；

Fig. 8 is the power divider that this utility model provides is 2ghz in operating frequency, target power distribution ratio k²During for 4 Output port phase place schematic diagram.

[specific embodiment]

In order to be better understood from the technical solution of the utility model, below in conjunction with the accompanying drawings this utility model is retouched in detail State.

It will be appreciated that described embodiment is only a part of embodiment of this utility model, rather than whole enforcement Example.Based on the embodiment in this utility model, those of ordinary skill in the art are obtained under the premise of not making creative work The all other embodiment obtaining, broadly falls into the scope of this utility model protection.

Term used in this utility model is the purpose only merely for description specific embodiment, and is not intended to be limiting this Utility model." a kind of ", " described " and " being somebody's turn to do " of singulative used in this utility model and appended claims It is also intended to including most forms, unless context clearly shows that other implications.

It should be appreciated that term "and/or" used herein is only a kind of incidence relation of description affiliated partner, represent There may be three kinds of relations, for example, a and/or b, can represent: individualism a, there is a and b simultaneously, individualism b these three Situation.In addition, character "/" herein, typically represent forward-backward correlation to as if a kind of relation of "or".

It will be appreciated that though transmission line may be described using term first, second, third, etc. in this utility model Deng, but these transmission lines should not necessarily be limited by these terms.These terms are only used for transmission line is distinguished from each other out.For example, do not taking off In the case of this utility model scope, the first transmission line can also be referred to as the second transmission line, similarly, the second transmission line The first transmission line can be referred to as.

Depending on linguistic context, word as used in this " if " can be construed to " ... when " or " when ... When " or " in response to determining " or " in response to detection ".Similarly, depending on linguistic context, phrase " if it is determined that " or " if detection (condition of statement or event) " can be construed to " when determining " or " in response to determining " or " when the detection (condition of statement Or event) when " or " in response to detecting (condition of statement or event) ".

Embodiment one

This utility model provides a kind of power divider, refer to Fig. 1, its power distribution providing for this utility model The circuit topological structure figure of device.

As shown in figure 1, this power divider includes input 11, the first outfan 12, second outfan the 13, first transmission Line 14,15, two article of the 3rd transmission line of the second transmission line 16 (including the 3rd transmission line 161 and the 3rd transmission line 162), two article the 4th Transmission line 17 (including the 4th transmission line 171 and the 4th transmission line 172) and isolation circuit 18；

Second transmission line 15 one end connects input 11, and the other end connects the first outfan 12；

One end that second transmission line 15 is connected with input 11, one article of the 3rd transmission line 161 of parallel connection and one article of the 4th biography in parallel Defeated line 171, the other end ground connection of the 3rd transmission line 161；

One end that second transmission line 15 is connected with the first outfan 12, one article of the 3rd transmission line 162 of parallel connection and one article the in parallel Four transmission lines 172, the other end ground connection of the 3rd transmission line 162；

One end of first transmission line 14 connects input 11, and the other end connects the second outfan 13；

It is connected with isolation circuit 18 between first outfan 12 and the second outfan 13.

Specifically, in this utility model, the characteristic impedance of input 11, the characteristic impedance of the first outfan 12 and second are defeated The characteristic impedance going out end 13 is all equal.

During a concrete implementation, the characteristic impedance of the second transmission line 15 is equal to the characteristic of the 6th transmission line 182 Impedance；And, the electrical length of the second transmission line 15 is the electrical length of the 6th transmission line 182 plus 180 °.

Specifically, in this utility model, the electrical length of the second transmission line 15 is 180 ° of+θ₆, characteristic impedance is z₂, then In the circuit structure of two transmission lines 15 and two article of the 3rd transmission line 16, two articles of the 3rd transmission line 16 meetings at the second transmission line 15 two ends Produce larger admittance in working frequency points, and then have considerable influence to the reversed nature of power divider, therefore, this practicality is new In type, also distinguish one article of the 4th transmission line 17 of parallel connection at the two ends of the second transmission line 15, during offsetting working frequency points, the second biography The admittance that defeated line 15 two ends the 3rd transmission line 16 in parallel produces, thus so that the second transmission line 15 and in parallel two article the 3rd It is 180 ° of+θ that the circuit of transmission line 16 composition can be equivalent to electrical length₆, equivalent characteristic impedance is z₂Transmission line 15, and then, can To realize the reversed nature between the first outfan 12 of power divider and the second outfan 13.

As shown in figure 1, the first outfan 12 is attached by isolation circuit 18 with the second outfan.

During a concrete implementation, as shown in figure 1, isolation circuit 18 includes: the 5th transmission line the 181, the 6th passes Defeated line 182 and isolation resistance 183.One end of 5th transmission line 181 connects the first outfan 12, and the other end connects the 6th transmission line 182；The other end of the 6th transmission line 182 connects the second outfan 13.During concrete implementation, one end of isolation resistance 183 Ground connection, the other end is connected between the 5th transmission line 181 and the 6th transmission line 182.

Specifically, in this utility model, the 5th transmission line 181 is identical with the first transmission line 14.That is, the 5th transmission line 181 characteristic impedance is equal to the characteristic impedance of the first transmission line 14, and the electrical length of the 5th transmission line 181 is equal to the first transmission line 14 Electrical length.

During a concrete implementation, resistance r of resistance is equal to the characteristic impedance z of input₀.

Specifically, in power divider as shown in Figure 1, the parameter of each device includes: the characteristic resistance of the first transmission line 14 Resist and electrical length, the characteristic impedance of the second transmission line 15 and electrical length, the characteristic impedance of the 3rd transmission line 16, the 4th transmission line 17 Characteristic impedance, the characteristic impedance of the 5th transmission line 181 and electrical length, the characteristic impedance of the 6th transmission line 182 and electrical length, every Resistance from resistance 183.

In this utility model, according to target power distribution ratio, obtain two linear electrical parameters, two linear electrical parameters include The characteristic impedance of the first transmission line 14, the electrical length of the first transmission line 14, the characteristic impedance of the 6th transmission line 182 and the 6th transmission Any two in the electrical length of line 182；It is then possible to according to target power distribution ratio and two linear electrical parameters getting, Obtain the parameter of each device in power divider.

Specifically, in this utility model, according to target power distribution ratio, obtain the side of implementing of two linear electrical parameters Formula is not particularly limited.

During a concrete implementation, can preferentially with physics realization more easily as principle, according to target power Distribution ratio, selects two linear electrical parameters in the easy scope of physics realization.For example it is easier to obtain the first of physics realization The characteristic impedance of transmission line 14 may range from [30 ω, 120 ω] it is easier to obtain the 6th transmission line 182 of physics realization May range from more than 150 ω of characteristic impedance.It is understood that above citing is only in order to illustrate this programme, and without To limit this utility model.

Based on this, in this utility model, according to target power distribution ratio and two linear electrical parameters, obtain power divider In each device parameter, may comprise steps of:

According to target power distribution ratio and two linear electrical parameters, obtain the first transmission line 14 and the 6th transmission line 182 removes Other two linear electrical parameters beyond two linear electrical parameters of acquisition；

According to the linear electrical parameter of the 6th transmission line 182, obtain the characteristic impedance of the 3rd transmission line 16；

Linear electrical parameter according to the 6th transmission line 182 and the characteristic impedance of the 3rd transmission line 16, obtain the 4th transmission line 17 characteristic impedance.

Specifically, the characteristic impedance according to the 6th transmission line 182, obtains the characteristic impedance of the 3rd transmission line 16.

Specifically, the characteristic impedance of the electrical length according to the 6th transmission line 182 and the 3rd transmission line 16, obtains the 4th transmission The characteristic impedance of line 17.

In this utility model, it is assumed that transmission line inactivity consumes in the case of input 11 excitation, microwave power only passes Defeated in the first outfan 12 and the second outfan 13, therefore, target power distribution ratio is the work(of the output of the second outfan 13 The ratio of the power p1 of the output of rate p2 and the first outfan 12, namely target power distribution ratio k²Expression formula can be expressed as Lower formula:

$k^2=\frac{p_2}{p_1}={\left(\frac{z_6{\mathrm{sin\θ}}_6}{z_1{\mathrm{sin\θ}}_1}\right)}^2$

Wherein, k²For target power distribution ratio, p₁For the power of the first outfan 12, p₂For the power of the second outfan 13, z₆For the characteristic impedance of the 6th transmission line 182, z₁For the characteristic impedance of the first transmission line 14, θ₆Long for the electricity of the 6th transmission line 182 Degree, θ₁Electrical length for the first transmission line 14.

Refer to Fig. 2, it is the even mould equivalent electric of the power divider in the case of input 11 excitation in this utility model Road schematic diagram.

As shown in Fig. 2 will be passed through the second transmission line 15, the first outfan the 12, the 5th by input 11 in power divider As up branch road, the input admittance of this up branch road is y to the branch road of defeated line 181_u；And, by power divider by inputting End 11 through the first transmission line 14, the second outfan 13, the 6th transmission line 182 branch road as downstream branch, downstream branch defeated Entering admittance is y_l.

Based on this, according to transmission line theory, equation below group can be obtained:

$y_u=y_6\frac{y_0-{\mathrm{jy}}_1{\mathrm{ctg\θ}}_1+{\mathrm{jy}}_6{\mathrm{tan\θ}}_6}{y_6+j(y_0-{\mathrm{jy}}_1{\mathrm{ctg\θ}}_1){\mathrm{tan\θ}}_6}$

$y_l=y_1\frac{y_0-{\mathrm{jy}}_6{\mathrm{ctg\θ}}_1+{\mathrm{jy}}_1{\mathrm{tan\θ}}_1}{y_1+j(y_0-{\mathrm{jy}}_6{\mathrm{ctg\θ}}_1){\mathrm{tan\θ}}_1}$

Wherein, y₀For the characteristic admittance of input 11, y₁For the characteristic admittance of the first transmission line 14, y₆For the 6th transmission line 182 characteristic admittance, θ₁For the electrical length of the first transmission line 14, θ₆For the electrical length of the 6th transmission line 182, j is imaginary unit.

It should be noted that existing as the pass between below equation between characteristic admittance and characteristic impedance in this utility model System:

y₀=1/z₀

Wherein, z₀The characteristic impedance of expression system, y₀The characteristic admittance of expression system.

According to above-mentioned formula, the characteristic impedance z of the first transmission line 14 can be obtained₁, the characteristic impedance z of the first transmission line 14₁ Expression formula as shown in below equation:

$z_1=z_0\sqrt{\frac{1+k^2-k^2{({\mathrm{cos\θ}}_1+{\mathrm{cos\θ}}_6/k)}^2}{k^2{\sin }^2{\mathrm{\θ}}_1}}$

Wherein, k²For target power distribution ratio, z₆For the characteristic impedance of the 6th transmission line 182, θ₆For the 6th transmission line 182 Electrical length, z₁For the characteristic impedance of the first transmission line 14, θ₁For the electrical length of the first transmission line 14, z₀Characteristic resistance for system Anti-.

Therefore, according to k²Expression formula formula and z₁Expression formula formula composition formula group, as the spy of the first transmission line 14 Property impedance z₁, electrical length θ of the first transmission line 14₁, the characteristic impedance z of the 6th transmission line 182₆Long with the electricity of the 6th transmission line 182 Degree θ₆When any two parameter determination in this four parameters, combining target power-division ratios k²It is possible to obtain other two Individual parameter.

For example, according to target power distribution ratio k², the electricity of suitable first transmission line 14 can be selected according to actual needs Length θ₁Electrical length θ with the 6th transmission line 182₆, then, by target power distribution ratio k², electrical length θ of the first transmission line 14₁ Electrical length θ with the 6th transmission line 182₆Bring k into²Expression formula formula and z₁Expression formula formula composition formula group, solve should Formula group, you can obtain the characteristic impedance z of the first transmission line 14₁Characteristic impedance z with the 6th transmission line 182₆.May be appreciated Be, this citing only in order to this programme to be described, not in order to limit this utility model.

During a concrete implementation, for power divider as shown in Figure 1 in this utility model, it is possible to use Equation below, according to the linear electrical parameter of the 6th transmission line 182, obtains the characteristic impedance of the 3rd transmission line 16:

$z_{oe}=z_6\frac{c}{1-c}$

Wherein, z_oeFor the characteristic impedance of the 3rd transmission line 16, z₆For the characteristic impedance of the 6th transmission line 182, c is coupled systemes Number.

In this utility model, coefficient of coup c can carry out value according to actual needs, and this utility model does not carry out spy to this Do not limit.

During a concrete implementation, coefficient of coup c can carry out value in the range of less than 0.45.

During another concrete implementation, coefficient of coup c can be with value 0.3.

In this utility model, as shown in figure 1, also utilizing formula below, according to the linear electrical parameter of the 6th transmission line 182 With the characteristic impedance of the 3rd transmission line 16, obtain the second transmission line 16 characteristic impedance:

z₄=z_oetanθ₄tanθ₆

Wherein, z₄For the characteristic impedance of the 4th transmission line 17, z_oeFor the characteristic impedance of the 3rd transmission line 16, θ₄For the 4th biography The electrical length of defeated line 17, θ₆Electrical length for the 6th transmission line 182.

It should be noted that the characteristic impedance z of the 4th transmission line 17₄Can be selected according to actual needs, this practicality New this is not particularly limited.

During a concrete implementation, resistance r of isolation resistance 183 is equal to the characteristic impedance z of system₀.

The power divider that this utility model provides, can obtain arbitrary target power-division ratios.Below with shown in Fig. 1 It is illustrated as a example power divider.

For example, if the operating frequency of power divider is 2ghz, target power distribution ratio k²For 1, the first biography in this circuit Electrical length θ of defeated line 14₁For 90 °, electrical length θ of the 6th transmission line 182₆For 20 °, the characteristic impedance z of the first transmission line 14₁For 52.84 ω, the characteristic impedance z of the 6th transmission line 182₆For 154.5 ω, the coefficient of coup c of selection is 0.3, according to above-mentioned formula The characteristic impedance z of the 3rd transmission line 16 that group obtains_oeFor 66.21 ω, the electrical length of the 4th transmission line 17 of selection is 70 °, logical Cross the characteristic impedance z of the 4th transmission line 17 that above-mentioned formula obtains₄For 66.21 ω, the isolation resistance 183 in isolation circuit 18 Resistance r is 50 ω.

Refer to Fig. 3, the power divider that it provides for this utility model is 2ghz in operating frequency, target power distributes Compare k²For frequency response schematic diagram when 1.

As shown in figure 3, the curve 1a in Fig. 3 and curve 1b is to represent scattering parameter (s-parameter, s parameter) s23, Represent isolation situation between the first outfan 12 and the second outfan 13；Curve 2a in Fig. 3 and curve 2b represents scattering parameter S33, s33 represent the return loss/reflection coefficient of the second outfan 13；Curve 3a in Fig. 3 and curve 3b represents scattering parameter S11, s11 represent the return loss/reflection coefficient of input 11；Curve 4a in Fig. 3 and curve 4b represents scattering parameter S22, s22 represent the return loss/reflection coefficient of the firstth outfan 12；Curve 5 in Fig. 3 represents scattering parameter s21, s21 Represent the power ratio of the first outfan 12 output and input 11 input, s21 represents that the insertion of the first outfan 12 is damaged Consumption；Curve 6 in Fig. 3 represents that scattering parameter s31, s31 represent the work(of the second outfan 13 output and input 11 input The ratio of rate, s31 represents the insertion loss of the second outfan 13.

As shown in figure 3, in curve 1a and curve 1b 6 curves in figure 3, numerical value is minimum, and, in operating frequency Tend to negative infinite during 2ghz, this first outfan 12 that power divider provided by the utility model is described and the second outfan Port isolation between 13 is in order.

Refer to Fig. 4, the power divider that it provides for this utility model is 2ghz in operating frequency, target power distributes Compare k²Phase angle schematic diagram for output port when 1.

As shown in figure 4, the curve 6 in Fig. 4 is the phase angle of the second outfan 13, the curve 7 in Fig. 4 is the first outfan 12 phase angle, the curve 8 in Fig. 4 is the difference with the phase angle of the second outfan 13 for the phase angle of the first outfan 12.

As shown in figure 4, when operating frequency is for 2ghz, the numerical value of curve 8 is 180 °, the phase of this explanation the first outfan 12 The difference at the phase angle of parallactic angle and the second outfan 13 is 180 °, has good anti-between the first outfan 12 and the second outfan 13 Phase behaviour, this power divider has good reversed nature.

Or, and for example, if the operating frequency of power divider is 1ghz, target power distribution ratio k²For 2, in this circuit Electrical length θ of the first transmission line 14₁For 90 °, electrical length θ of the 6th transmission line 182₆For 30 °, the characteristic resistance of the first transmission line 14 Anti- z₁For 53 ω, the characteristic impedance z of the 6th transmission line 182₆For 150 ω, the coefficient of coup c of selection is 0.3, according to above-mentioned public affairs The characteristic impedance z of the 3rd transmission line 16 that formula group obtains_oeFor 64.28 ω, the electrical length of the 4th transmission line 17 of selection is 60 °, The characteristic impedance z of the 4th transmission line 17 being obtained by above-mentioned formula₂For 64.28 ω, the isolation resistance 183 in isolation circuit 18 Resistance r be 50 ω.

Refer to Fig. 5, the power divider that it provides for this utility model is 1ghz in operating frequency, target power distributes Compare k²For frequency response schematic diagram when 2.

As shown in figure 5, the curve 1a in Fig. 5 and curve 1b is to represent scattering parameter (s-parameter, s parameter) s23, Represent the isolation situation between the first outfan 12 and the second outfan 13；Curve 2a in Fig. 5 and curve 2b represents scattering ginseng Number s33, s33 represent the return loss/reflection coefficient of the second outfan 13；Curve 3a in Fig. 5 and curve 3b represents scattering ginseng Number s11, s11 represent the return loss/reflection coefficient of input 11；Curve 4a in Fig. 5 and curve 4b represents scattering parameter S22, s22 represent the return loss/reflection coefficient of the firstth outfan 12；Curve 5 in Fig. 5 represents scattering parameter s21, s21 Represent the power ratio of the first outfan 12 output and input 11 input, s21 represents that the insertion of the first outfan 12 is damaged Consumption；Curve 6 in Fig. 5 represents that scattering parameter s31, s31 represent the work(of the second outfan 13 output and input 11 input The ratio of rate, s31 represents the insertion loss of the second outfan 13.

As shown in figure 5, in curve 1a and curve 1b 6 curves in Figure 5, numerical value is minimum, and, in operating frequency Tend to negative infinite during 2ghz, this first outfan 12 that power divider provided by the utility model is described and the second outfan Isolation between 13 is in order.

Refer to Fig. 6, the power divider that it provides for this utility model is 1ghz in operating frequency, target power distributes Compare k²Phase angle schematic diagram for output port when 2.

As shown in fig. 6, the curve 6 in Fig. 6 is the phase angle of the second outfan 13, the curve 7 in Fig. 6 is the first outfan 12 phase angle, the curve 8 in Fig. 6 is the difference with the phase angle of the second outfan 13 for the phase angle of the first outfan 12.

As shown in fig. 6, when operating frequency is for 2ghz, the numerical value of curve 8 is 180 °, the phase of this explanation the first outfan 12 The difference at the phase angle of parallactic angle and the second outfan 13 is 180 °, has good anti-between the first outfan 12 and the second outfan 13 Phase behaviour, this power divider has good reversed nature.

Or, and for example, if the operating frequency of power divider is 2ghz, target power distribution ratio k²For 4, in this circuit Electrical length θ of the first transmission line 14₁For 90 °, electrical length θ of the 6th transmission line 172₆For 20 °, the characteristic resistance of the first transmission line 14 Anti- z₁For 52.84 ω, the characteristic impedance z of the 6th transmission line 172₆For 154.5 ω, the coefficient of coup c of selection is 0.3, according to above-mentioned The characteristic impedance z of the 3rd transmission line 16 that obtains of formula group_oeFor 66.21 ω, the electrical length of the 4th transmission line 17 of selection is 70 °, the characteristic impedance z of the 4th transmission line 17 being obtained by above-mentioned formula₂For 66.21 ω, the isolation electricity in isolation circuit 18 Resistance r of resistance 183 is 50 ω.

Refer to Fig. 7, the power divider that it provides for this utility model is 2ghz in operating frequency, target power distributes Compare k²For frequency response schematic diagram when 4.

As shown in fig. 7, the curve 1a in Fig. 7 and curve 1b is to represent scattering parameter (s-parameter, s parameter) s23, Represent the isolation situation between the first outfan 12 and the second outfan 13；Curve 2a in Fig. 7 and curve 2b represents scattering ginseng Number s33, s33 represent the return loss/reflection coefficient of the second outfan 13；Curve 3a in Fig. 7 and curve 3b represents scattering ginseng Number s11, s11 represent the return loss/reflection coefficient of input 11；Curve 4a in Fig. 7 and curve 4b represents scattering parameter S22, s22 represent the return loss/reflection coefficient of the firstth outfan 12；Curve 5 in Fig. 7 represents scattering parameter s21, s21 Represent the power ratio of the first outfan 12 output and input 11 input, s21 represents that the insertion of the first outfan 12 is damaged Consumption；Curve 6 in Fig. 7 represents that scattering parameter s31, s31 represent the work(of the second outfan 13 output and input 11 input The ratio of rate, s31 represents the insertion loss of the second outfan 13.

As shown in fig. 7, in curve 1a and curve 1b 6 curves in the figure 7, numerical value is minimum, and, in operating frequency Tend to negative infinite during 1ghz, this first outfan 12 that power divider provided by the utility model is described and the second outfan Port isolation between 13 is in order.

Refer to Fig. 8, the power divider that it provides for this utility model is 2ghz in operating frequency, target power distributes Compare k²Phase place schematic diagram for output port when 4.

As shown in figure 8, the curve 6 in Fig. 8 is the phase angle of the second outfan 13, the curve 7 in Fig. 8 is the first outfan 12 phase angle, the curve 10 in Fig. 8 is the difference with the phase angle of the second outfan 13 for the phase angle of the first outfan 12.

As shown in figure 8, when operating frequency is for 2ghz, the numerical value of curve 8 is 180 °, the phase of this explanation the first outfan 12 The difference at the phase angle of parallactic angle and the second outfan 13 is 180 °, has good anti-between the first outfan 12 and the second outfan 13 Phase behaviour, this power divider has good reversed nature.

It is understood that above citing is only in order to illustrate this programme, not in order to limit this utility model.This practicality is new Type no longer repeats to specific solution procedure.

One of technique scheme technical scheme has the advantages that

In this utility model, power divider adopts the circuit structure of micro-strip, and microstrip circuit structure is planar structure, easily Carry out integrated with other microwave components or circuit, motility is higher, can reduce integrated cost, and, this utility model provides Power divider in, have good reversed nature between the first outfan and the second outfan；And, in this utility model, Only need to reasonably select the characteristic impedance of transmission line specified and electrical length to divide it is possible to realize power in power divider The arbitrary target power-division ratios of orchestration, simple and feasible in terms of physics realization.Therefore, this utility model solves existing work( Rate allotter is difficult to the problem of any power-division ratios.

Those skilled in the art can be understood that, for convenience and simplicity of description, the system of foregoing description, Device and the specific work process of unit, may be referred to the corresponding process in preceding method embodiment, will not be described here.

The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all this Within the spirit of utility model and principle, any modification, equivalent substitution and improvement done etc., should be included in this utility model Within the scope of protection.

Claims (4)

1. a kind of power divider is it is characterised in that described power divider includes input, the first outfan, the second output End, the first transmission line, the second transmission line, two article of the 3rd transmission line, two article of the 4th transmission line and isolation circuit；

Described second transmission line one end connects described input, and the other end connects described first outfan；

One end that described second transmission line is connected with described input one article of the 3rd transmission line of parallel connection and one article of the 4th transmission in parallel Line, the other end ground connection of described 3rd transmission line；

One end that described second transmission line is connected with described first outfan one article of the 3rd transmission line of parallel connection and one article the 4th in parallel Transmission line, the other end ground connection of described 3rd transmission line；

One end of described first transmission line connects described input, and the other end connects described second outfan；

It is connected with described isolation circuit between described first outfan and described second outfan.

2. power divider according to claim 1 is it is characterised in that described isolation circuit includes: the 5th transmission line, Six transmission lines and isolation resistance；

One end of described 5th transmission line connects described first outfan, and the other end connects described 6th transmission line；

The other end of described 6th transmission line connects described second outfan.

3. power divider according to claim 2 it is characterised in that described isolation resistance one end ground connection, the other end It is connected between described 5th transmission line and described 6th transmission line.

4. power divider according to claim 2 is it is characterised in that described 5th transmission line and described first transmission line Identical.