Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synthesizer
Patent
1994-08-30
1995-09-05
Grimm, Siegfried H.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Synthesizer
327107, 327 48, 331 2, 331 45, 331 74, 377 48, H03B 1900
Patent
active
054481910
ABSTRACT:
A frequency synthesizer provides a synthesized signal. The synthesizer includes an oscillator that supplies a fast clock signal to a divider programmable by a digital data. The most significant bits of the digital data are provided to the programmable divider, and the least significant bits are provided to an accumulator that cooperates with the programmable divider to increment by one unit its division rank when the accumulator overflows. The synthesizer further includes a generator for generating n increasing delay phases of the synthesized signal; a comparator for comparing the content of the accumulator with n ranges of possible increasing values; and circuits for selecting, as the synthesized signal, the phase whose rank corresponds to the rank of the range within which the content of the accumulator is comprised.
REFERENCES:
patent: 3928813 (1975-12-01), Kingsford-Smith
patent: 3976945 (1976-08-01), Cox
patent: 5093632 (1992-03-01), Hietala et al.
Grimm Siegfried H.
SGS-Thomson Microelectronics S.A.
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