发明名称 |
FREQUENCY DETERMINATION CIRCUIT AND METHOD |
摘要 |
<p>Circuits and methods for identifying or verifying frequencies are disclosed herein. A frequency verification circuit comprises: an input port for receiving an input signal; a phase frequency difference detector for determining a difference in phase and frequency between the input signal and a feedback signal and for providing a control signal based on the detected difference; a voltage controlled crystal oscillator for producing an output signal based on the control signal; and a feedback loop including a feedback divider for frequency dividing the output signal by a factor R to produce the feedback signal, the feedback divider being programmable to a plurality of values of the factor R to correspond to a plurality of different test frequencies.</p> |
申请公布号 |
CA2879226(A1) |
申请公布日期 |
2014.01.23 |
申请号 |
CA20132879226 |
申请日期 |
2013.07.08 |
申请人 |
NANOWAVE TECHNOLOGIES INC. |
发明人 |
NICHOLLS, CHARLES WILLIAM TREMLETT;HAMDANE, WALID |
分类号 |
G01R23/12 |
主分类号 |
G01R23/12 |
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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