Liu Wen et al. A Theoretical and Experimental Study on Centre Frequency Controlling of High Frequency and Narrow Band SAWF[J]. 1992,(3):35-41. DOI: 10.13756/j.gtxyj.1992.03.004.
甚高频窄带SAWF中心频率精确控制研究
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.
Abstract
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.
关键词
声表面波滤波器换能器中心频率控制法
Keywords
surface acustic filtertransducerfrequency offset control