System and method for providing a non-invasively tunable transceiver synthesizer
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United States of America Patent
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Dec 9, 1997
Grant Date -
N/A
app pub date -
Jun 15, 1995
filing date -
Jun 15, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A transceiver synthesizer includes components that enable it to be tuned non-invasively by software. The transceiver synthesizer includes a non-volatile memory (30) that can be non-invasively programmed with a digital value for each of a number of tuning variables. The digital values are converted by digital to analog converters (37, 38, 39) into tuning voltages. The tuning voltages are applied to voltage variable devices (60, 80, 95) that respond to changes in the applied tuning voltage to vary an operating characteristic thereof. The operating characteristics of the voltage variable devices (60, 80, 95) are non-invasively adjustable to tune the transceiver synthesizer for high and low port modulation deviation, reference oscillator make tolerance, automatic frequency control, reference oscillator temperature compensation etc.
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