CN104051834A - S-waveband micro-strip anti-phase smoothing power divider - Google Patents

Abstract

The invention relates to an S-waveband micro-strip anti-phase smoothing power divider which comprises four resonators and loads. The coupling coefficient between the first resonator and a source in front of the first resonator is m'S1=1.11, the coupling coefficient between the first resonator and the second resonator is m'12=1.064, the absolute value of the coupling coefficient m'23 between the second resonator and the third resonator is the same as the absolute value of the coupling coefficient m'24 between the second resonator and the fourth resonator, please see the formula in the specification, in other words, absolute values of power distribution branch coupling coefficients are the same, the power distribution branch coupling coefficients are half of the square roots of two times coupling coefficients of the resonators in corresponding filters, the coupling coefficient m'3L1 between the third resonator and the first load L1 is the same as the coupling coefficient M'4L2 between the fourth resonator (4) and the second load L2, m'3L1=M'4L2=1.11, and a coupling coefficient matrix of the smoothing power divider can be accordingly obtained. By means of the anti-phase smoothing power divider, equal distribution of output port power can be achieved, phases of output signals can be opposite, the S-waveband micro-strip anti-phase smoothing power divider is suitable for application occasions needing anti-phase feedback or anti-phase signals, and meanwhile the good inhibiting ability on out-band signals is achieved.

Description

The micro-band inverse filtering of a kind of S-band power splitter

Technical field

The present invention relates to information detection field, relate in particular to the micro-band inverse filtering of a kind of S-band power splitter.

Background technology

Microwave power distributor has extensive use in antenna array, power system etc.There is the much research about microwave power distributor; Common microwave power distributor is Wilkinson power divider, and this power splitter has used impedance transformation line to guarantee that each port identity impedance is identical.

But, the good inhibition of the more difficult realization of this power splitter to working band external signal; The occasion having in addition also needs to export anti-phase, and this power splitter is more difficult realizes anti-phase output.

In view of above-mentioned defect, creator of the present invention has obtained this creation finally through long research and practice.

Summary of the invention

The object of the present invention is to provide the micro-band inverse filtering of a kind of S-band power splitter, in order to overcome above-mentioned technological deficiency.

For achieving the above object, the invention provides the micro-band inverse filtering of a kind of S-band power splitter, it comprises four resonators and load, and wherein, the coupling coefficient between the first resonator and source above thereof is m ' _s1coupling coefficient m ' between the=1.11, first resonator and the second resonator ₁₂coupling coefficient m ' between the=1.064, second resonator and the 3rd resonator ₂₃and the coupling coefficient m ' between the second resonator and the 4th resonator ₂₄order of magnitude is identical, and be that power division branch road coupling coefficient absolute value is identical and for coupling coefficient size between resonator in respective filter

The 3rd resonator and the first load L ₁between coupling coefficient with the 4th resonator and the second load L ₂between coupling coefficient identical, and obtain thus the coupling coefficient matrix of filtering power splitter, as shown in following matrix,

$\left[m1\right]=\left[\begin{array}{ccccccc}0& m_{S1}^{\′}& 0& 0& 0& 0& 0\\ m_{S1}^{\′}& 0& m_{12}^{\′}& 0& 0& 0& 0\\ 0& m_{12}^{\′}& 0& m_{23}^{\′}& m_{24}^{\′}& 0& 0\\ 0& 0& m_{23}^{\′}& 0& 0& m_{3L_1}^{\′}& 0\\ 0& 0& m_{24}^{\′}& 0& 0& 0& m_{4L_2}^{\′}\\ 0& 0& 0& m_{3L_1}^{\′}& 0& 0& 0\\ 0& 0& 0& 0& m_{4L_2}^{\′}& 0& 0\end{array}\right]$

In formula,

$m_{S1}^{\′}=m_{3L_1}^{\′}=m_{4L_2}^{\′}=1.11$

Make m ' ₂₃=-m ' ₂₄, output will be anti-phase.

$m_{12}^{\′}=\sqrt{2}{m}_{23}^{\′}=\sqrt{2}{m}_{24}^{\′}=1.064$

Further, it comprises four modules, and the first module is importation, comprises described the first resonator and input A;

The 3rd module comprises described the second resonator, and by energy, the first resonator coupling from the first module comes for it, then energy is divided equally to the resonator in the second module and four module;

The second module is output, comprises described the 4th resonator and output I;

Four module is output, comprises described the 3rd resonator and output R.

Further, described the second module and four module are symmetrical about the 3rd module, and the first module and the 3rd intermodule are apart from 0.5mm, and the second module and the 3rd intermodule are apart from being 0.4mm, and four module and the 3rd intermodule distance are 0.4mm.

Further, described input A, output I and R width are 1.6mm, and input A length is any, and output I is identical with R length.

Beneficial effect of the present invention is compared with prior art: the present invention can conveniently utilize filter coupled coefficient to obtain the coupling coefficient of filtering power splitter, makes the design of filtering power splitter substantially be similar to design of filter, thereby design process is simplified; Inverse filtering power splitter can not only be realized the mean allocation of output port power, can also make phase of output signal contrary, is applicable to the application scenario of the anti-phase feed of needs or inversion signal; In work band, the flatness of Insertion Loss is better, and out of band signal is had to good inhibition ability.

Accompanying drawing explanation

Fig. 1 is the three rank filter topologies figure that the present invention utilizes;

Fig. 2 is the topological diagram of filtering power splitter of the present invention;

Fig. 3 is the filtering power divider structure schematic diagram that the present invention has anti-phase output.

Embodiment

Below in conjunction with accompanying drawing, to the present invention is above-mentioned, be described in more detail with other technical characterictic and advantage.

Refer to shown in Fig. 1, it is the present invention three rank filter topologies figure, "●" representation signal source and load in figure, and " zero " represents resonator, for three rank filters, has 3 resonators here; The coupling coefficient matrix of this three rank filter is N+2=5 rank, as shown in formula (1),

$\left[m\right]=\left[\begin{array}{ccccc}0& 1.11& 0& 0& 0\\ 1.11& 0& 1.064& 0& 0\\ 0& 1.064& 0& 1.064& 0\\ 0& 0& 1.064& 0& 1.11\\ 0& 0& 0& 1.11& 0\end{array}\right]---\left(1\right)$

Refer to shown in Fig. 2, it is the topological diagram of filtering power splitter of the present invention, source S in this topological diagram, the first resonator 1, the second resonator 2 and coupling coefficient is identical with Fig. 1 therebetween; In order to carry out power division, load L given energy again by feed the 3rd resonator 3 and the 4th resonator 4, the three resonators 3 of the energy equal proportion of the second resonator 2 ₁, the 4th resonator 4 is given load L by amount ₂.

The present invention adopts analytic method, the parameter between the second resonator 2 and source above and load etc. remain unchanged (m ' _s1=1.11, m ' ₁₂=1.064), the coupling coefficient m ' of 3 of the second resonator 2 and the 3rd resonators ₂₃and the coupling coefficient m ' that the second resonator 2 and the 4th resonator are 4 ₂₄order of magnitude is identical, and (be that power division branch road coupling coefficient absolute value is identical and for coupling coefficient size between resonator in respective filter );

The 3rd resonator 3 and the first load L ₁between coupling coefficient with the 4th resonator 4 and the second load L ₂between coupling coefficient identical, and identical with the coupling coefficient between the 3rd resonator and load L in Fig. 1, obtain the coupling coefficient matrix of filtering power splitter, this filtering power splitter coefficient matrix is N+4=7 rank, as shown in following formula (2),

$\left[m1\right]=\left[\begin{array}{ccccccc}0& m_{S1}^{\′}& 0& 0& 0& 0& 0\\ m_{S1}^{\′}& 0& m_{12}^{\′}& 0& 0& 0& 0\\ 0& m_{12}^{\′}& 0& m_{23}^{\′}& m_{24}^{\′}& 0& 0\\ 0& 0& m_{23}^{\′}& 0& 0& m_{3L_1}^{\′}& 0\\ 0& 0& m_{24}^{\′}& 0& 0& 0& m_{4L_2}^{\′}\\ 0& 0& 0& m_{3L_1}^{\′}& 0& 0& 0\\ 0& 0& 0& 0& m_{4L_2}^{\′}& 0& 0\end{array}\right]---\left(2\right)$

In formula,

$m_{S1}^{\′}=m_{3L_1}^{\′}=m_{4L_2}^{\′}=1.11$

$m_{12}^{\′}=\sqrt{2}{m}_{23}^{\′}=\sqrt{2}{m}_{24}^{\′}=1.064$

In calculating, do not consider outbound course above, m ' 23=m ' 24, if make m ' 23=-m ' 24, output will be anti-phase (what in the present invention, adopt is anti-phase output, m ' ₂₃=-m ' ₂₄, if seek common ground output, m ' mutually ₂₃=m ' ₂₄); In the present invention, working medium plate relative dielectric constant is 2.2, and thickness is 0.508mm.

Refer to shown in Fig. 3, it has the filtering power divider structure schematic diagram of anti-phase output for the present invention, and the micro-band inverse filtering of this S-band power splitter comprises four modules altogether, and the first module 1 is importation, containing the first resonator 1 and input A;

The 3rd module 3 is the second resonator, and by energy, the first resonator 1 coupling from the first module 1 comes for it, then energy is divided equally to resonator in the second module 2 and four module 4;

The second module 2 is output, containing the 4th resonator 4 and output I;

Four module 4 is output, containing the 3rd resonator 3 and output R.

As shown in Figure 3, wherein the second module 2 and four module 4 are about the 3rd module 3 symmetries, and the first module 1 and the 3rd module 3 spacing are 0.5mm, and the second module 2 and the 3rd module 3 spacing are 0.4mm, and four module 4 and the 3rd module 3 spacing are 0.4mm.

In the first module 1, A is input, and in the second module 2, in I and four module 4, R is output, and R and I output signal constant amplitude anti-phase.

Input A, output I and R width are 1.6mm, and input A length is any, and output I needs identical with R length.

In described the first module 1, each several part size is as follows:

B: long 7.6mm, wide 0.5mm, the part that B is first resonator, A is directly connected with input;

C: long 5.9mm, wide 0.5mm, is the part of the first resonator;

D: long 3mm, wide 3.1mm, is the part of the first resonator;

E: long 2.9mm, wide 3.1mm, is the part of the first resonator;

F: long 6.3mm, wide 0.5mm, is the part of the first resonator;

Spacing 1.4mm between D and E;

Output terminals A right side is apart from B right side 5.8mm;

Wherein D, C, B, F, E connect in turn, and A is connected with B, as shown in Figure 3,

In module 2, each several part size is as follows:

G: long 3.1mm, wide 2.7mm, is the part of the second resonator;

H: long 0.5mm, wide 6.3mm, is the part of the second resonator;

J: long 7.6mm, wide 0.5mm, is the part of the second resonator;

K: long 0.5mm, wide 6.2mm, is the part of the second resonator;

L: long 3.1mm, wide 2.8mm, is the part of the second resonator;

L and G interval 1.4mm;

Output I upper end is apart from J upper end 5.7mm.

Wherein G, H, J, K, L connect in turn, and I is connected with J, as shown in Figure 3.

In the 3rd module 3, each several part size is as follows:

M: long 2.2mm, wide 3.2mm, is the part of the 3rd resonator;

N: long 0.5mm, wide 6.1mm, is the part of the 3rd resonator;

O: long 10mm, wide 0.5mm, is the part of the 3rd resonator;

P: long 0.5mm, wide 6.1mm, is the part of the 3rd resonator;

Q: long 2.2mm, wide 3.2mm, is the part of the 3rd resonator;

M, N, O, P, Q connect in turn.

Four module 4 is identical with the second module 2 structures, and about the symmetrical placement of the 3rd module 3.

The foregoing is only preferred embodiment of the present invention, is only illustrative for invention, and nonrestrictive.Those skilled in the art is understood, and in the spirit and scope that limit, can carry out many changes to it in invention claim, revise, and even equivalence, but all will fall within the scope of protection of the present invention.

Claims (4)

1. the micro-band inverse filtering of a S-band power splitter, is characterized in that, it comprises four resonators and load, and wherein, the coupling coefficient between the first resonator and source above thereof is m ' _s1coupling coefficient m ' between the=1.11, first resonator and the second resonator ₁₂coupling coefficient m ' between the=1.064, second resonator and the 3rd resonator ₂₃and the coupling coefficient m ' between the second resonator and the 4th resonator ₂₄order of magnitude is identical, and be that power division branch road coupling coefficient absolute value is identical and for coupling coefficient size between resonator in respective filter

The 3rd resonator 3 and the first load L ₁between coupling coefficient with the 4th resonator 4 and the second load L ₂between coupling coefficient identical, and obtain thus the coupling coefficient matrix of filtering power splitter, as shown in following matrix,

$\left[m1\right]=\left[\begin{array}{ccccccc}0& m_{S1}^{\′}& 0& 0& 0& 0& 0\\ m_{S1}^{\′}& 0& m_{12}^{\′}& 0& 0& 0& 0\\ 0& m_{12}^{\′}& 0& m_{23}^{\′}& m_{24}^{\′}& 0& 0\\ 0& 0& m_{23}^{\′}& 0& 0& m_{3L_1}^{\′}& 0\\ 0& 0& m_{24}^{\′}& 0& 0& 0& m_{4L_2}^{\′}\\ 0& 0& 0& m_{3L_1}^{\′}& 0& 0& 0\\ 0& 0& 0& 0& m_{4L_2}^{\′}& 0& 0\end{array}\right]$

In formula,

$m_{S1}^{\′}=m_{3L_1}^{\′}=m_{4L_2}^{\′}=1.11$

, make m ' ₂₃=-m ' ₂₄, output will be anti-phase.

$m_{12}^{\′}=\sqrt{2}{m}_{23}^{\′}=\sqrt{2}{m}_{24}^{\′}=1.064$

2. the micro-band inverse filtering of S-band according to claim 1 power splitter, is characterized in that, it comprises four modules, and the first module is importation, comprises described the first resonator and input A;

The 3rd module comprises described the second resonator, and by energy, the first resonator coupling from the first module comes for it, then energy is divided equally to the resonator in the second module and four module;

The second module is output, comprises described the 4th resonator and output I;

Four module is output, comprises described the 3rd resonator and output R.

3. the micro-band inverse filtering of S-band according to claim 2 power splitter, it is characterized in that, described the second module and four module are symmetrical about the 3rd module, the first module and the 3rd intermodule are apart from 0.5mm, the second module and the 3rd intermodule are apart from being 0.4mm, and four module and the 3rd intermodule distance are 0.4mm.

4. according to the micro-band inverse filtering of the S-band described in claim 2 or 3 power splitter, it is characterized in that, described input A, output I and R width are 1.6mm, and input A length is any, and output I is identical with R length.