Oscillators – Automatic frequency stabilization using a phase or frequency... – Particular error voltage control
Reexamination Certificate
2007-10-08
2011-10-25
Johnson, Ryan (Department: 2817)
Oscillators
Automatic frequency stabilization using a phase or frequency...
Particular error voltage control
C331S185000, C327S156000, C455S076000
Reexamination Certificate
active
08044723
ABSTRACT:
Techniques for generating oscillator signals in a wireless communication device are described. A phase-locked loop (PLL) may be used to generate an oscillator signal for a selected frequency channel. Different PLL settings may be used for the blocks in the PLL for different frequency channels. The different PLL settings may be for different PLL loop bandwidths, different amounts of charge pump current, different frequency equations associated with different sets of high and low divider ratios, different frequency division schemes associated with different prescaler ratios and/or different integer divider ratios, high side or low side injection for a super-heterodyne receiver or transmitter, and/or different supply voltages for one or more circuit blocks such as an oscillator. A suitable set of PLL settings may be selected for each frequency channel such that adverse impact due to spurs can be mitigated.
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Translation of Office Action in Japan application 2010-525007 corresponding to US application 11/868,824, citing US20060003722, US20030080817, JP2001160752, US20050080564 and JP2001016103 dated Jan. 25, 2011.
Dunworth Jeremy Darren
Kim Hong Sun
Kim Jin Wook
Pals Timothy Paul
Zhang Gang
Ho Eric
Johnson Ryan
Moskowitz Larry J.
QUALCOMM Incorporated
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