Telecommunications – Transmitter and receiver at same station – With frequency stabilization
Reexamination Certificate
2007-01-23
2007-01-23
Moe, Aung (Department: 2618)
Telecommunications
Transmitter and receiver at same station
With frequency stabilization
C455S260000, C455S180300, C455S313000, C327S156000
Reexamination Certificate
active
10883641
ABSTRACT:
The invention relates to a method of operating a frequency divider. The frequency divider includes a plurality of divider cells arranged in a chain. Each divider cell is adapted to divide a frequency of an input signal with one of two enabled division ratios in accordance with an applied division ratio control signal, and each divider cell but the last is adapted to provide a frequency divided signal as an input signal for a respective next divider cell. In order to enable a Fractional-N division, the method comprises receiving and buffering a new division ratio control signal for each of the divider cells, and synchronizing an application of the buffered division ratio control signals to the divider cells with a status of a current division cycle. The invention relates equally to a corresponding frequency divider, PLL frequency synthesizer, RF front end, device and system.
REFERENCES:
patent: 4271531 (1981-06-01), Torii et al.
patent: 5257294 (1993-10-01), Pinto et al.
patent: 5471502 (1995-11-01), Ishizeki
patent: 7102399 (2006-09-01), Wu
patent: 2006/0087350 (2006-04-01), Ruffieux
patent: 2006/0170464 (2006-08-01), Muller
patent: 38 10705 (1989-10-01), None
patent: 195 03 052 (1996-08-01), None
patent: 0 537 616 (1993-04-01), None
patent: 2 231 136 (1990-11-01), None
“A Family of Low-Power Truly Modular Programmable Dividers in Standard 0.35- μm CMOS Technology”, Vaucher et al., IEEE Journal of Solid-State Circuits, vol. 35, No. 7, Jul. 2000, pp. 1039-1045.
Böcker Stephan
Kakerow Ralf
Möller Markus
LandOfFree
Frequency division does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Frequency division, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency division will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3768835