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Method of realizing high precision phase shifting of ferr ite phase shifting device

A ferrite and phase shifter technology, which is applied in waveguide devices, electrical components, circuits, etc., can solve the problems of difficult to achieve high-precision numerical control phase shifting, complex structure of phase shifters, difficulty in debugging and manufacturing, etc. , to achieve high-precision phase shifting, reduce manufacturing difficulty, and increase switching time

Inactive Publication Date: 2006-06-28
中国兵器工业第二〇六研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The phase shifter also has the disadvantages of relatively complex structure, difficulty in debugging and production
[0009] To sum up, it can be seen that for digitally controlled phase shifters used in microwave high-frequency bands, whether using saturated digital excitation or magnetic flux excitation, it is difficult to achieve high-precision numerically controlled phase shifting with a phase shift step of no more than 1°.

Method used

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  • Method of realizing high precision phase shifting of ferr ite phase shifting device
  • Method of realizing high precision phase shifting of ferr ite phase shifting device
  • Method of realizing high precision phase shifting of ferr ite phase shifting device

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The maximum required phase shift step is δ=1°.

[0053] The maximum phase shift value  of the first-stage ferrite excited by magnetic flux cmax =30°, the above phase shift accuracy requirements can be met.

[0054] According to relation Determine that the minimum value of n is 4.54, and round n to 5, that is, five sections of ferrite are required;

[0055] According to the relationship (1), (2) and (3), the nominal phase shift value  of each section of ferrite for the remaining 4 sections of saturated digital excitation can be determined i They are 25°, 51.3°, 94°, 184.5° in turn.

[0056] The structure of the phase shifter in this embodiment is as follows figure 1 shown. Among them, 1 represents a ferrite ring rod with a maximum phase shift value of 30°, and the ring rod of this section is magnetized according to the magnetic flux excitation method. 2, 3, 4, and 5 are ferrite ring rods with different lengths, which are used to generate four phase shift values...

Embodiment 2

[0085] The maximum required phase shift step is δ=4°.

[0086] The maximum phase shift value  of the first-stage ferrite excited by magnetic flux cmax =57°, the above phase shift accuracy requirements can be met.

[0087] According to relation Determine that the minimum value of n is 3.58, and round n to 4, that is, four sections of ferrite are required;

[0088] According to the relationship (1), (2) and (3), the nominal value of the phase shift  of each segment of the ferrite for the remaining 3 segments of saturated digital excitation can be determined i They are 51°, 96.4°, and 187.2° in turn.

[0089] In this embodiment, the superimposition mode of phase shift of each section of ferrite is the same as that in Embodiment 1. Table 2 is an excerpt of the phase-shifting state test results of this embodiment. The data in Table 2 shows that the phase-shifting step amount is ≤4°.

[0090] CNC binary code

Phase shift value

CNC binary code

Phase shift...

Embodiment 3

[0105] The maximum required phase shift step is δ=1°.

[0106] The maximum phase shift value  of the first-stage ferrite excited by magnetic flux cmax =30°, the above phase shift accuracy requirements can be met.

[0107] According to relation Determine that the minimum value of n is 4.54, and round n to 5, that is, five sections of ferrite are required;

[0108] According to the relationship (1), (2) and (3), the nominal phase shift value  of each section of ferrite for the remaining 4 sections of saturated digital excitation can be determined i 30°, 60°, 110°, 160° in turn.

[0109] In this embodiment, the superimposition mode of phase shift of each section of ferrite is the same as that in Embodiment 1.

[0110] The test result of the phase shifting accuracy in this embodiment is: the phase shifting step is less than 1°

[0111] In phase shifter engineering, when the saturated digital excitation method is used alone, for a four-bit saturated digital phase shifter, th...

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Abstract

This invention relates to a method for realizing accurate phase shift by a ferrite shifter, which applies a numerical control mode combining a flux excitation and a saturated digital excitation to make the shifter to generate accurate shift including: dividing a ferrite loaded on a waveguide center along the direction of the waves into n sections and the n is greater or equals to 2, the first section of which applies a flux excitation mode, the rest n-1 sections apply a saturation digital mode then overlapping the shift values of them and the shifter carries out digital control shift according to the step volume of the flux excitation section in the sphere greater or equals to 360deg.

Description

technical field [0001] The invention belongs to the field of waveguide transmission lines, and in particular relates to a method for realizing high-precision phase shifting by a ferrite phase shifter, which is applied to improving the phase shifting accuracy of microwave / millimeter wave waveguide ferrite phase shifters. technical background [0002] Compared with diode, MMIC and other types of phase shifters, phase shifters loaded with ferrite ring rods in waveguides in microwave high-frequency bands have absolute advantages in terms of insertion loss indicators, and the insertion loss of the latter is only 1 of the former. / 10 or so. The principle of the ferrite numerically controlled phase shifter is as follows: the ferrite in the phase shifter is remanently magnetized by pulse excitation current, and pulse currents in different directions or different amplitudes correspond to remanent magnetization in different directions or sizes. A change in the direction or magnitude ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/195
Inventor 高昌杰张蔚华鲁小刚杨卓杨景
Owner 中国兵器工业第二〇六研究所
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