基于树莓派的频率合成器系统设计  

Frequency synthesizer system design based on Raspberry Pi

作　　者：薛海彬 彭小苗 颜锦奎[1] Xue Haibin;Peng Xiaomiao;Yan Jinkui(School of Communication ＆ Information Engineering,Shanghai University,Shanghai 200436,China)

机构地区：[1]上海大学通信与信息工程学院

出　　处：《电子测量技术》2018年第16期125-131,共7页Electronic Measurement Technology

摘　　要：当前频率合成器系统多采用单片机控制和C语言编程,往往控制速度慢,而且程序复杂、调试繁琐、开发周期较长。为改善这些问题,采用树莓派zero-w单板作为核心控制模块,树莓派系统使用开源的Raspbian操作系统,采用开源的Python语言对HMC837LP6CE寄存器进行读写实现频率合成功能,并在OLED显示屏显示锁定状态信息及频率信息。用频谱仪测试了系统在基频和二分频模式下输出不同频率的频谱图,得到在10kHz频偏处的相位噪声性能在-112dBc/Hz左右,与理论结果相符。结果表明,输出频率的信号稳定、相噪低,能够实现与传统频率合成器系统同样的性能,同时相较传统频率合成器系统而言,程序简单、开发周期缩短,节约成本。The current frequency synthesizer system adopts single-chip microcomputer control and C language programming, often with slow control speed, complicated program, involuted debugging, and long development cycle. To solve these issues, the method of this paper is to use a Raspberry Pi Zero-W hoard as the core control module, a Raspberry Pi system to use the open-source Raspbian operating system, and an open-source Python language to read and write the HMC837LP6CE register to implement the frequency synthesis function. , and an OLED to display lock status information and frequency information. The spectrum diagrams of the different output frequencies of the system in the fundamental frequency and the divide-by -- 2 mode were tested with a spectrum analyzer. The phase noise performance at a frequency offset of 10 kHz was about -- 112 dBc/Hz, which is in accordance with the theoretical results. The results show that the output frequency signal is stable and the phase noise is low, which can achieve the same performance as the traditional frequency synthesizer system. Compared with the traditional frequency synthesizer system, the program is simple, the development cycle is shortened, and the cost is s^vocl

关 键 词：树莓派 PYTHON语言 开源 频率合成器 

分 类 号：TN742[电子电信—电路与系统]