Oscillators – Automatic frequency stabilization using a phase or frequency... – Afc with logic elements
Patent
1986-09-30
1987-12-22
LaRoche, Eugene R.
Oscillators
Automatic frequency stabilization using a phase or frequency...
Afc with logic elements
331 16, 331 17, 331 25, 455260, H03L 706, H03L 710
Patent
active
047148993
ABSTRACT:
A programmable frequency synthesizer is disclosed having most components implemented on a single large scale integration (LSI) chip, which facilitates rapid frequency acquisition. Provision is made by the present invention to configure the frequency synthesizer for use in either a receiver or a transmitter. In the transmitter mode, modulation cancelling allows modulation down to approximate DC. A serial programming protocol is provided to program the frequency synthesizer.
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Motorola Syntor X FM Two-Way Radio--Instruction Manual 68P81044E40-B.
Electronic Components and Applications, vol. 3, No. 1 (Nov. 1980, entitled Frequency Synthesiser Using LSI Devices, pp. 47-61--P. R. Brennand and B. Murray.
IEEE Journal of Solid-State Circuits, vol. SC-15, No. 6, Dec. 1980, entitled An Eight-Channel 8 Bit Microprocessor Compatible NMOS D/A Converter with Programmable Scaling--Luc A. Bienstman and Hugo J. DeMan, pp. 1051-1059.
IEEE Journal of Solid-State Circuits, vol. SC-14, No. 4, Aug. 1979, entitled Low-Frequency Noise Considerations for MOS Amplifiers Design, pp. 773-778, Jean-Claude Bertails.
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Enderby Ralph
Hansen Kenneth A.
Heck Joseph P.
Kurtzman Gary
Vidugiris Bronis
Berry Thomas G.
LaRoche Eugene R.
Mis David
Motorola Inc.
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