摘要
中心频率偏差较大是研制278MHz甚高频窄带SAWF碰到的主要困难。由于采用了CAD等措施,这一困难得到了有效的克服。实验结果,主要技术性能指标达到插入损耗约8 dB,中心频率偏差小于60kHz,Q值则超过590.
The main difficulty in fabrication of high frequency and narrow band SAWF is the large centre frequency offset. By using CAD design method and taking some other measures, this difficulty was overcome effectively. Our results of the SAWF ares insertion loss about 8 dB, centre frequency error less than 60 kHz and Q value more than 590.
出处
《光通信研究》
1992年第3期35-41,共7页
Study on Optical Communications
关键词
声表面波
滤波器
频率控制
surface acustic filter
transducer
frequency offset control
