发明名称 |
Method and apparatus for highly accurate higher frequency signal generation and related level gauge |
摘要 |
An apparatus includes a stable local oscillator, which includes a first control loop. The first control loop includes a first voltage-controlled oscillator configured to generate a first output signal and a first phase-locked loop. The apparatus also includes a frequency up-converter configured to increase a frequency of the first output signal. The apparatus further includes a second control loop configured to receive the up-converted first output signal. The second control loop includes a second voltage-controlled oscillator configured to generate a second output signal and a second phase-locked loop. The second control loop may further include a mixer having a first input coupled to the frequency up-converter, a second input coupled to the second voltage-controlled oscillator, and an output coupled to the second phase-locked loop. A reference frequency source may be configured to generate a signal identifying a reference frequency and to provide that signal to the phase-locked loops. |
申请公布号 |
US8659472(B2) |
申请公布日期 |
2014.02.25 |
申请号 |
US20090534723 |
申请日期 |
2009.08.03 |
申请人 |
SAI BIN;SEHRIER RONALD C.;ENRAF B.V. |
发明人 |
SAI BIN;SEHRIER RONALD C. |
分类号 |
G01S13/08;G01F23/22;G01F23/284;G01S7/35;G01S13/00 |
主分类号 |
G01S13/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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