Design of c-band telecontrol transmitter local oscillator for UAV data link

2017 International Conference on Power and Energy Engineering

Cao, Hui^1 ; Qu, Yu^1 ; Song, Zuxun^1

Institute 365, Northwestern Polytechnical University, 127 YouYi Xilu, Xi'an, Shaanxi

710072, China^1

关键词: Engineering practices;    Frequency resolutions;    Guiding significances;    Phase Locked Loop (PLL);    Prototype measurements;    Radio frequency transmitters;    Simulation and testing;    Spurious suppressions;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/114/1/012012/pdf
DOI  :  10.1088/1755-1315/114/1/012012

来源: IOP

【 摘 要 】

A C-band local oscillator of an Unmanned Aerial Vehicle (UAV) data link radio frequency (RF) transmitter unit with high-stability, high-precision and lightweight was designed in this paper. Based on the highly integrated broadband phase-locked loop (PLL) chip HMC834LP6GE, the system performed fractional-N control by internal modules programming to achieve low phase noise and small frequency resolution. The simulation and testing methods were combined to optimize and select the loop filter parameters to ensure the high precision and stability of the frequency synthesis output. The theoretical analysis and engineering prototype measurement results showed that the local oscillator had stable output frequency, accurate frequency step, high spurious suppression and low phase noise, and met the design requirements. The proposed design idea and research method have theoretical guiding significance for engineering practice.