A Simple And Efficient Design Of Instantaneous Frequency Measurement Encoder With Phase Comparison Method

摘要

This paper presents a simple and efficient design of instantaneous frequency measurement encoder with phase comparison method. Firstly, in order to improve the accuracy of the sampling data, the software filter module is added in the encoder. Secondly, the encoder uses hierarchical lookup table to reduce the complexity of encoder design. Finally, the independent programming makes the encoder have good expansibility and portability. In practical application, the encoder has achieved good effect and has been widely used in frequency measurement receivers.