Abstract: This article analyzes the impact of reflection on SDH equipment and the factors generated by receiver R-point reflection Background technology: 2. Reflection coefficient is a parameter used to characterize the matching state between the receiving instrument and the excitation signal in the measurement system. Usually, the smaller the reflection coefficient, the higher the signal transmission efficiency. For the field of microwave measurement, network analyzers are generally used to measure the scattering parameters (s parameters) of devices or instruments, achieving the measurement of their reflection coefficients. 3. As the power source can only truly reflect its reflection coefficient characteristics when measuring its reflection coefficient in working state. However, the network analyzer can only measure the reflection coefficient of passive components, otherwise it will burn out the receiver of the network analyzer. For active devices, only a certain frequency offset can be used. For example, if you want to measure the reflection coefficient at a frequency of 1 GHz, you need to measure it at 1.1 GHz, which results in the inability to obtain true measurement results. Technical implementation elements: 4. The embodiment of the present invention provides a measurement method and system for the reflection coefficient of a power source to solve the problem of existing technologies being unable to accurately measure the reflection coefficient of active devices. 5. In the first aspect, the embodiment of the present invention provides a measurement method for the reflection coefficient of a power source, which includes: 6. calibrating the two ports of a vector network analyzer, and using the calibrated vector network analyzer to measure the s parameters of impedance allocators in different impedance states; 7. Measure the reflection coefficient of the power probe using the calibrated vector network analyzer; 8. Based on the different output powers of the power source and impedance regulators in different impedance states, read the power values corresponding to the output power from the power meter; 9. Solve the overdetermined equation based on the s parameter, reflection coefficient, and power value to obtain the reflection coefficient of the power source. In one possible implementation, the overdetermined equation is:
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