Fast calibration method of microwave high power passive distributor

Abstract

The invention relates to a fast calibration method of a microwave high power passive distributor. On the basis that the distributor is selected, the design frequency is determined, the number of positions in which an admittance slider needs to walk in the x direction and the y direction is determined; firstly, a limited number of positions of given frequency points are measured, and the changing rule of scattering parameters of the distributor is acquired along with the movement of the admittance slider in the x direction and the y direction; then, on the basis of test data, a mathematical function of changes of magnitudes and phase positions of scattering parameters along with positions is acquired through fitting with a data fitting method, on the basis of the mathematical function, scattering parameter data in other positions are derived with a value calculating method, a least square method is selected as the value calculating method, and a calibration table is established and used for subsequent testing. According to the method, testing accuracy and testing efficiency can be both taken into consideration, and high-accuracy fast calibration is achieved.

Description

technical field [0001] The invention relates to a microwave high-power passive adjuster technology, in particular to a rapid calibration method for a microwave high-power passive adjuster. Background technique [0002] The load-pull method is an impedance-dependent measurement technique that uses an automatic adjuster to adjust the source and load impedances, reflecting the measurement of the frequency-dependent load impedance. The principle of this measurement technique is to measure parameters such as input, output, and power-added efficiency by changing the source impedance or load impedance under the condition of a given input power, and record the value of the corresponding source impedance or load impedance at the same time. After appropriate data processing, the optimal source impedance and load impedance required under the state of maximum output power or maximum power-added efficiency are obtained, so as to obtain the optimal design scheme of the input / output matchi...

AI Technical Summary

Problems solved by technology

However, if the diaphragm of the adjuster is to be measured at each moving position, the amount of data to be measured is extremely large, and it will also consume a lot of time and computing resources, which will affect the speed and efficiency of the test. Therefore, it is necessary to study Fast Calibration Method

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