Method and device for improving efficiency of frequency...

Details Method and device for improving efficiency of frequency... Method and device for improving efficiency of frequency...

2005-02-08

2005-02-08

Nguyen, Linh My (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C331S018000

Reexamination Certificate

active

06853224

ABSTRACT:
A method and a device for reducing cycle slips resulting from frequency hops in a wireless communication device. In the method, a first signal pulse is received, which first signal pulse is either said reference signal pulse or said signal pulse to be compared, a second signal pulse is received, which second signal pulse is from another source than said first signal pulse, a control voltage is generated for controlling a voltage controlled oscillator in response to a phase difference between said first received and said second received signal pulses. At a time instant between the reception of said first and said second signal pulses, a constant voltage is added to said control voltage on receiving additionally one signal pulse, which is the same type as said first signal pulse. After receiving said second signal pulse, said constant voltage is removed from said control voltage on receiving at least one signal pulse, which is the same type as said second signal pulse.

REFERENCES:
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patent: 5055803 (1991-10-01), Hietala
patent: 5952853 (1999-09-01), Willingham et al.
patent: 6100721 (2000-08-01), Durec et al.
patent: 6329847 (2001-12-01), Chabas

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