Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Reexamination Certificate
2006-04-17
2008-12-16
Wells, Kenneth B. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Synchronizing
C327S157000
Reexamination Certificate
active
07466173
ABSTRACT:
The invention relates to a phase-locked loop circuit (1) in a radio transceiver for the detection of the linear operation of a first voltage controlled oscillator (2), which comprises a frequency divider (8), a reference oscillator (10), a phase detector (12) to compare the phases of the reference oscillator (10) with a divided frequency of the frequency divider (8), and a charge pumping means (14) connected to the phase detector (12) and is characterized in that the connection (13) between the phase detector (12) and the charge pumping means (14) has at least one branch-off line (15) connected to at least one filtering means (22), whose output voltage is related to the linear operation of the voltage controlled oscillator (2).
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Fressola Alfred A.
Jager Ryan C
Nokia Corporation
Ware Fressola Van Der Sluys & Adolphson LLP
Wells Kenneth B.
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