发明名称 |
Frequency measuring and control apparatus with integrated parallel synchronized oscillators |
摘要 |
A frequency measuring and control apparatus includes a plurality of synchronized oscillators integrated in parallel into one programmable logic device. |
申请公布号 |
US8914909(B2) |
申请公布日期 |
2014.12.16 |
申请号 |
US201113583952 |
申请日期 |
2011.03.17 |
申请人 |
RHK Technology, Inc. |
发明人 |
Porthun Steffen |
分类号 |
G01Q30/00;H03L7/08;G01R23/02;G01Q30/04;G01Q10/06;B82Y35/00;G01R23/06;G01R23/12;G01R23/15 |
主分类号 |
G01Q30/00 |
代理机构 |
Reising Ethington P.C. |
代理人 |
Reising Ethington P.C. |
主权项 |
1. An electronic frequency measuring and control apparatus, comprising:
an oscillating element; an oscillation sensor to sense oscillation of the oscillating element and generate an analog oscillation signal corresponding to the sensed oscillation of the oscillating element; an analog-to-digital converter in communication with the oscillation sensor to convert the analog oscillation signal to a digital oscillation signal; and a phase locked loop to compare the digital oscillation signal from the analog-to-digital converter with a digital reference oscillation signal and generate a digital phase difference signal; and a plurality of oscillators in parallel downstream communication with the phase locked loop to receive the digital phase difference signal, wherein the oscillators include a plurality of phase accumulators to generate a plurality of digital phase signals for a corresponding plurality of channels and a plurality of phase-to-amplitude converters downstream of the phase accumulators to convert the plurality of digital phase signals into a plurality of digital amplitude signals for the corresponding plurality of channels; wherein the phase locked loop and the plurality of oscillators are defined by a single programmable logic device in communication with the analog-to-digital converter and configured to apply a plurality of channel-specific synchronization factors to the digital phase difference signal upstream of the phase accumulators. |
地址 |
Troy MI US |