Two-point modulator comprising a PLL circuit and a...

Details Two-point modulator comprising a PLL circuit and a... Two-point modulator comprising a PLL circuit and a...

2006-11-28

2006-11-28

Kinkead, Arnold (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Tuning compensation

C331S00100A, C332S127000, C332S128000, C327S157000, C327S159000, C375S376000

Reexamination Certificate

active

07142063

ABSTRACT:
A two-point modulator includes a PLL circuit and a simplified digital pre-filtering system. The two-point modulator includes a first circuit path for impressing an analog modulation signal into a first point in the PLL circuit, and a second circuit path for impressing a digital modulation signal into a second point in the PLL circuit. The second circuit path actuates a frequency divider in the feedback path in the PLL circuit and contains a digital filter which has a square-wave pulse response.

REFERENCES:
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Copy of the International Search Report, International Application No. PCT/DE02/01914, International Filing Date May 24, 2002, 6 pgs.

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