声表面波振荡器 meaning in Chinese
sound surface wave oscillator
surface acoustic wave oscillator
Examples
- For very high frequency clocks , a surface acoustic wave ( saw ) oscillator is preferable
对于非常高的频率时钟，用声表面波振荡器更好。 - Surface transverse wave has the 1 . 6 high frequency than rayleigh type surface acoustic wave ( using the same technology the frequency of devices of stw has about 1 . 6 high frequency than rayleigh type surface acoustic wave ) . the paper introduces the theory , design parament , technology and result expeiment of surface acoustic wave ( includes rayleigh surface acoustic wave and surface transverse wave , simple stw ) with low insertion loss , high q and researches the high frequency , low phase noise oscillator with 1ghz stw resonator as frequency element . and describes measurement method and finally experimantal result of the low phase noise surface acoustic wave oscillator
本文研究了以低损耗、高q值声表面波(其中包括声表面瑞利波- - rayleighsurfaceacousticwave ,和声表面横波等)谐振器的工作原理、设计参数、制作工艺及其实验结果,并且研究了以1ghzstw谐振器为频控元件的高频率、低相位噪声声表面波振荡器,以及低相位噪声声表面波振荡器的测试方法和最终的测试结果。 - At present the manufacture of surface acoustic wave use the technology of the final submicron . a series of the devices of low insertion loss , high q saw rayleigh surface acoustic wave resonators or stws that insertion loss has less than 5db , load quality factor ( ql ) is more than 1000 on the quartz piezoelectric with zero of first temperature factor in the research . these difference frequencies are 60mhz , 280mhz , 739mhz and 1ghz of normal frequency and at also surface acoustic wave . using 1 . 25db noise factor amplifier , careful design curcuit , good setting printed curcuit board , and using the 1ghz surface transverse wave resonator as frequency element , researching the low phase noise surface acoustic wave with sideband phase noise near ? 120dbc / hz deviating 1khz on carrier , spurious suppress with 80db
本研究采用一阶温度系数为零的压电石英基片上制作出损耗小于5db 、有载品值因素( ql值)超过1000的一系列低损耗、高q值声表面波rayleigh波或stw谐振器,频率分别为60mhz 、 280mhz 、 739mhz和1ghz等不同频率的高性能声表面波谐振器。并采用噪声系数为1 . 25db的低噪声系数放大器,精心设计电路,优化设计布置印制电路板,用标称频率为1ghz的声表面波谐振器为频率控制元件,制作出在偏离载频1khz处的单边带相位噪声近- 120dbc / hz 、杂波抑制达80db以上的低相位噪声声表面波振荡器。