声表面波脉冲编码调制振荡器  

Pulse Encoding Modulation SAW Oscillator

作　　者：李国选[1] 

机构地区：[1]四川压电与声光技术研究所

出　　处：《压电与声光》1996年第5期289-292,297,共5页Piezoelectrics & Acoustooptics

摘　　要：论述了一种直接式声表面波脉冲编码调制振荡器的工作原理及设计方法。实际制作了工作频率为３９４ＭＨｚ、调制频偏大于２００ｋＨｚ、调制信号码速率大于４００ｋｂｉｔ／ｓ、输出功率大于５０ｍＷ。The operation principle and design method of a direct pulse encoding modulation SAW oscillator are elaborated.A good pulse encoding modulation SAW oscillator was produced in practice.The device operates at the frequency of 394 MHz,with modulated frequency deviation >200 kHz, rate of modulated signal code in excess of 400 kbit/s, output power>50 mW,temperature stability of ±50×10 -6 (-20 °C～+60 °C).

关 键 词：声表面波 调频振荡器 脉冲编码调制 移相器 

分 类 号：TN761.94[电子电信—电路与系统] TN752