- 专利标题： Specifying SC and IT cut quartz resonators for optimal temperature compensated oscillator performance
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申请号： US17407665申请日： 2021-08-20
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公开(公告)号： US11456700B1公开(公告)日： 2022-09-27
- 发明人: John Day
- 申请人： Rockwell Collins, Inc.
- 申请人地址： US IA Cedar Rapids
- 专利权人： Rockwell Collins, Inc.
- 当前专利权人： Rockwell Collins, Inc.
- 当前专利权人地址： US IA Cedar Rapids
- 代理机构： Suiter Swantz pc llo
- 主分类号： H03B5/04
- IPC分类号： H03B5/04 ; H03B5/32 ; H01L23/00 ; H03H9/205 ; H01L27/20 ; H03L7/099 ; H03L7/085
摘要：
An oscillator includes dual resonators mounted in a helium filled coldweld holder. One resonator operates at anti-resonance into a load capacitance of about 20 picofarads, and operates on a third overtone frequency under noncontrolled temperature conditions. The other resonator operates on a fundamental mode at anti-resonance in a load capacitance of about 32 picofarads. Resonator crystals in a dual-crystal resonator may include a theta-angle shift to equalize frequency versus temperature curves at temperature extremes.