摘要
本文设计了一种检测引力波天线微弱振动的参量电容电桥换能器,并导出在单一泵频模式下换能器灵敏度的分析表达式,对影响换能器灵敏度的各种因素进行了讨论。
The capacitive para-bridge transducer has large coupling coefficient due to a
parametrical gain factor.By using a quartz resonator in the transducer circuit,
the electrical quality factor and frequency stability of the transducer can be
greatly improved.It is shown that a balance bridge transducer has the advantage of
restraining pump noise effectively,which is a main problem of active transducer.
In addition,the paper gives the sensitivity equation of the transducer,which
shows the relations among the effective noise and other noise sources,and makes
some discussion about the elements of influencing the sensitivity.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
1991年第2期163-167,共5页
Acta Scientiarum Naturalium Universitatis Sunyatseni
基金
国家自然科学基金
关键词
换能器
检测
振动
电容式
引力波
gravitational wave
para-bridge transducer
quartz resonator
