Oscillators – With frequency calibration or testing
Reexamination Certificate
2009-03-17
2011-10-25
Johnson, Ryan (Department: 2817)
Oscillators
With frequency calibration or testing
C331S016000, C331S179000, C331S00100A
Reexamination Certificate
active
08044726
ABSTRACT:
A method for self testing a multiband voltage controlled oscillator (VCO) is described. A first frequency band in a VCO is selected. An N value is selected for a frequency divider that produces a tuning voltage for the VCO that is between a low tuning voltage limit and a high tuning voltage limit for the VCO. The N value is adjusted in one direction until the tuning voltage reaches one of the tuning voltage limits. This N value at the tuning voltage is a first limit value. The frequency bands are switched from the first frequency band to a second frequency band that is adjacent to the first frequency band.
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International Search Report and Written Opinion—PCT/US2010/027701, International Search Authority—European Patent Office—May 25, 2010.
Hall Tracy
Kim Jin Wook
Stockstad Troy
Johnson Ryan
QUALCOMM Incorporated
Xu Jiayu
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