A 47GHz Mixed-Mode FMCW Signal Generator for Fast Triangular Chirp Modulation
| Autor: | Luqiang Duan, Guopei Chen, Mengdi Cao, Ruichang Ma, Baoyong Chi, Wei Deng, Zhiyuan Chen |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Signal generator 020208 electrical & electronic engineering Bandwidth (signal processing) 02 engineering and technology Delta-sigma modulation law.invention Phase-locked loop Modulation law 0202 electrical engineering electronic engineering information engineering Electronic engineering Chirp Radar MATLAB computer computer.programming_language |
| Zdroj: | 2019 IEEE International Conference on Electron Devices and Solid-State Circuits (EDSSC). |
| DOI: | 10.1109/edssc.2019.8754050 |
| Popis: | A 47GHz frequency-modulated continuous-wave (FMCW) radar is presented. A current DAC with a 10bit 1st $\Sigma \Delta$ modulator is utilized to improve the equivalent DCO frequency resolution. A type-II PLL with the polarity-alternation is proposed to remove the frequency error at turning-around points (TAPs). The rms frequency error is improved 10x with 7GHz bandwidth and 200$\mu s$ period, which has been verified by MATLAB/Simulink. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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