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Integrated method for power divider with band-pass frequency response

A power divider and frequency response technology, which is applied to waveguide devices, circuits, connection devices, etc., can solve problems such as long optimization time, difficulty in power divider coupling matrix, and unreliable convergence.

Inactive Publication Date: 2012-07-04
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of optimization method has disadvantages such as long optimization time and not necessarily convergence in the specific implementation process; or the actual realization of the optimized power divider coupling matrix may be difficult.
For example, the diagonal array element of the coupling matrix of the obtained power divider is not 0, that is, the case of asynchronous tuning will greatly increase the 3D simulation time in the actual design process

Method used

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  • Integrated method for power divider with band-pass frequency response
  • Integrated method for power divider with band-pass frequency response
  • Integrated method for power divider with band-pass frequency response

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1, an n-order filter such as figure 1 As shown, the black dots represent the coupled resonators in the filter, and the solid line between the black dots represents the coupling value between the resonators, that is, the reciprocal of the value of the impedance transformer. The topology of the corresponding power divider uses the first K resonant units that constitute the filter, and according to the number of branch lines of the power divider, (n-k) resonances are used to form the corresponding branches, as shown in figure 2 shown. According to the design indicators such as the return loss of the power divider, the power distribution ratio, the number of output branches, and the position of the zero point of out-of-band transmission, firstly, according to the ideal Chebyshev normalized frequency response, the polynomial synthesis is carried out according to the design indicators, and the result that satisfies The normalized coupling matrix of the generaliz...

Embodiment 2

[0062] Example 2, such as Figure 12 given the adoption Figure 10 The algorithm flow described and Figure 11 topology, the normalized frequency response of the conventional 5th order Chebyshev filter is obtained. The corresponding normalized input and output coupling values ​​a=b=1.06, and the normalized coupling matrix is:

[0063] M=[0 0.842 0 0 0 ;

[0064] 0.842 0 0.62 0 0 ;

[0065] 0 0.62 0 0.62 0 ;

[0066] 0 0 0.62 0 0.842 ;

[0067] 0 0 0 0.842 0 ;].

[0068] Implement column 3, such as Figure 14 given the adoption Figure 10 The algorithm flow described and Figure 13 The topology structure of the normalized frequency response of the power distribution of the two-way equal power distribution, and the corresponding normalized input and output coupling values ​​a=b 1 =b 2 =1.06, the corresponding normalized coupling matrix is:

[0069] M=[0 0.842 0 0 0 0;

[0070] 0.842 0 0.62 0 0 0;

[0071] 0 0.62 0 0.62 0 0;

[...

Embodiment 5

[0085] Embodiment 5, such as Figure 18 given the adoption Figure 10 The algorithm flow described and Figure 17 The normalized frequency response of the two-way power splitter with a power ratio of 2:1 obtained from the topological structure, and the corresponding normalized input and output coupling values ​​a=b 1 = b 2 =1.06, the corresponding normalized coupling matrix is:

[0086] M= [0 0.842 0 0 0 0;

[0087] 0.842 0 0.62 0 0 0;

[0088] 0 0.62 0 0.62 0 0;

[0089] 0 0 0.62 0 0.69 0.488;

[0090] 0 0 0 0.69 0 0;

[0091] 0 0 0 0.488 0 0;].

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Abstract

The invention discloses an integrated method for a power divider with band-pass frequency response. The method comprises the following steps of: on the basis of the input port return loss and out-of-band suppression index for design of the power divider, integrating a corresponding normalized coupling matrix of a general Chebyshev filter; and according to the number of branches of the power divider and the power dividing ratio of each branch, by using an equivalent circuit principle, changing the coupling coefficients of the last common node of a network and a first node in each branch and the coupling coefficients of the branches including cross coupling to obtain the normalized coupling matrix of the power divider of this type, so that the aim of quickly integrating a band-pass type power divider is fulfilled. By adoption of the method, optimization of the normalized coupling matrix of the whole power divider is not required. The method is easy to implement and high in feasibility. The problem of non-convergence of the acquired normalized coupling matrix of the power divider by using an optimization algorithm or long computation time in the prior art can be solved.

Description

technical field [0001] The invention relates to a comprehensive method of a power divider that shares a common coupling resonator to realize a bandpass frequency response. It specifically involves using the generalized Chebyshev filter synthesis method to obtain the coupling matrix of the filter, and then obtaining the normalized coupling matrix of the power divider according to the circuit equivalent method of different power distribution ratios and different output channels of the power divider, Therefore, instead of using an optimization method to obtain the normalized coupling matrix of the band-pass power divider according to the design index of the power divider. It belongs to the technical field of microwave power dividers. Background technique [0002] Microwave power splitters are widely used in microwave communication, satellite communication, missile guidance, radar, electronic countermeasures, test instruments and other systems, mainly to distribute microwave po...

Claims

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Application Information

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IPC IPC(8): H01P5/12
Inventor 陈世勇吴玉成唐可然吕茂婷
Owner CHONGQING UNIV
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