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A fast three-pin automatic impedance matching system

An automatic impedance and fast three-way technology, applied in the direction of instrumentation, calculation, electrical digital data processing, etc., can solve problems such as low efficiency and huge database, and achieve the effect of avoiding complicated and cumbersome design process and avoiding simulation and measurement

Active Publication Date: 2020-12-01
SICHUAN UNIV
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Problems solved by technology

[0004] The traditional impedance matching system needs to repeatedly simulate or measure the parameters of the waveguide during design, especially when the matching efficiency and precision requirements are high, a large number of calculations are required, the design process is inefficient, and the database to be established is huge, and only Suitable for pin waveguides of the same size, once the waveguide size changes, the entire system needs to be redesigned

Method used

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  • A fast three-pin automatic impedance matching system
  • A fast three-pin automatic impedance matching system
  • A fast three-pin automatic impedance matching system

Examples

Experimental program
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Effect test

Embodiment Construction

[0052] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0053] The impedance matching system can be used in various microwave energy transmission devices, and the impedance adjustment can be performed only by connecting the system between the microwave source and the load.

[0054] Validate the experimental model as figure 2 shown.

[0055] We use diaphragms of different sizes to simulate different load impedances, such as image 3 shown. Each diaphragm has a different impedance, so different diaphragms represent different loads.

[0056] 1. S parameter calculation test

[0057] Set pin 2 and pin 3 at 8mm and 9mm respectively.

[0058] Compare the calculated S-parameters with the measured S-parameters, such as Figure 4 As shown, we found a high agreement between the calculated and measured results.

[0059] 2. Matching effect test

[0060]

[0061] Ta...

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Abstract

The invention relates to the technical field of three-pin automatic impedance matching, in particular to a fast three-pin automatic impedance matching system. The fast three-pin automatic impedance matching system includes the following steps: 1) establishing a three-pin waveguide equivalent circuit; 2) establishing a circuit parameter relationship; 3) designing a matching algorithm. The invention directly establishes the mathematical relationship among the reflection coefficient, load impedance, pin depth and S parameter of the three-pin waveguide, and can quickly calculate the scattering parameter and load impedance according to the reflection coefficient and the pin depth, thereby realizing fast impedance matching calculation. Based on the equivalent circuit method and numerical calculation, the invention can greatly reduce the amount of computation, simplify the design process of automatic impedance matching, does not require a database, and can be widely used in pin waveguides of different sizes.

Description

technical field [0001] The invention relates to the technical field of three-pin automatic impedance matching, in particular to a fast three-pin automatic impedance matching system. Background technique [0002] Impedance matching system is an essential component in high-power microwave industrial applications of kilowatt level. Since the characteristic impedance of each microwave device in the system is different, there is reflection in the system itself. The reflected energy can cause low transmission efficiency and damage to components. In order to eliminate the reflection and make the load obtain the maximum power from the power supply, we need to make the equivalent waveguide impedance and the load impedance into conjugate values. The pin waveguide can adjust the scattering parameters of the waveguide by adjusting the pin depth, so as to achieve impedance matching. The efficiency and accuracy of impedance matching is critical to the efficiency and stability of the ov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/398
Inventor 杨阳朱铧丞黄卡玛
Owner SICHUAN UNIV
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