Fractional-division synthesizer for a voice/data communications

Details Fractional-division synthesizer for a voice/data communications Fractional-division synthesizer for a voice/data communications

1990-04-26

1991-11-12

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

331 1A, 455 76, 455 87, H04B 140

Patent

active

050654080

ABSTRACT:
A fractional-division synthesizer for a digital transceiver is disclosed in which the fractional divisor may be separated into an integer, N, and a fraction made up of two integers, [n/d]. The integer n is the numerator of the fraction part of the fractional divisor. The integer N is the whole number portion of the fractional divisor. The integer d multiplied by the value of the transceiver channel spacing is algebraically related to the frequency of the reference oscillator. A bit rate clock is also derived from the reference oscillator.

REFERENCES:
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patent: 4458214 (1984-07-01), Lakomy
patent: 4549302 (1985-10-01), Heatherington
patent: 4567603 (1986-01-01), Howell et al.
patent: 4648060 (1987-03-01), Allen et al.
patent: 4758802 (1988-07-01), Jackson
patent: 4816774 (1989-03-01), Martin
Brewerton et al., "Defining the Elements of Good Design", Microwaves and RF, Jun., 1984, pp. 79-86 and 124-125.

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