CAJ | 학술논문

根据共模抑制原理,基于一种单基多电极石英晶体谐振器的结构,设计了一种新型的信号处理电路,这种电路将同一晶体基片上不同位置的谐振器对应的谐振频率作混频处理,然后采用差频、求和,最后倍频输出的方式输出,描述了各部分电路的设计.在分析石英谐振器的能限理论及力一频特性的基础上,用此方案设计的电路进行AT切同基三电极石英谐振器的力一频特性实验,记录了不同加力方式下的力一频特性,结果显示这种电路优化了力一频系数,线性度良好.在一定的加力方式下,经求和电路处理后的力一频系数可达139.72 Hz/N.
근거공모억제원리,기우일충단기다전겁석영정체해진기적결구,설계료일충신형적신호처리전로,저충전로장동일정체기편상불동위치적해진기대응적해진빈솔작혼빈처리,연후채용차빈、구화,최후배빈수출적방식수출,묘술료각부분전로적설계.재분석석영해진기적능한이론급력일빈특성적기출상,용차방안설계적전로진행AT절동기삼전겁석영해진기적력일빈특성실험,기록료불동가력방식하적력일빈특성,결과현시저충전로우화료력일빈계수,선성도량호.재일정적가력방식하,경구화전로처리후적력일빈계수가체139.72 Hz/N.
According to a kind of structure of same-base multi-electrode quartz resonator and the commonmode rejection theory, a new circuit design scheme is presented. Three base frequency signals are firstly outputted when different places resonator is vibrated synchronously, and then are sent to mixer, after difference frequency signals are obtained, signals are sent to mixer again, sum frequency signals are obtained through high-pass filter. At last,multiple frequency signals are outputted. Design of each circuit is presented. On the base of analysis of force-frequency characteristic and energy trap theory of quartz resonator, force-frequency characteristic experiments of AT cut same-base three-electrode quartz resonator are performed by using the new circuit scheme, and force-frequency characteristic is recorded when force is added in different direction. The results indicate that force-frequency conversion coefficients are optimized,and linear correlation coefficients are rarely changed. When force is added along a certain direction, forcefrequency conversion coefficient is 139. 72 Hz/N after sum circuit's processing.