Multiple accumulator fractional N synthesis with series recombin

Details Multiple accumulator fractional N synthesis with series recombin Multiple accumulator fractional N synthesis with series recombin

1982-02-18

1992-11-24

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Afc with logic elements

331 16, 331 25, 332127, 375120, 455 76, 455119, 455260, H03C 309, H03L 7197

Patent

active

051666421

ABSTRACT:
A fractional-N type frequency synthesizer (700) for use in a radiotelephone (901). The synthesizer (700) utilizes multiple latched accumulators (401, 403, 405, 407), within an accumulator network, to perform multiple integrals of an input signal (439). The outputs of the accumulators are combined in series to form a data output signal (453). The data output signal (453) is input to a divider network (703) and used as a variable divisor of the frequency input from a variable oscillator (701) into the divider network (703).

REFERENCES:
patent: 4609881 (1986-09-01), Wells
patent: 4816774 (1989-03-01), Martin
patent: 5038117 (1991-08-01), Miller
patent: 5070310 (1991-12-01), Hietala et al.

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