Telecommunications – Transmitter and receiver at same station – With frequency stabilization
Patent
1991-10-18
1993-10-26
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at same station
With frequency stabilization
4551651, 4551831, 455260, 455265, 331 25, 332127, H04B 140
Patent
active
052574091
ABSTRACT:
This disclosure discusses a programmable frequency synthesizer arrangement having programming feedback capability used to avoid undesirable operation due to random hard and soft faults. The arrangement operates by supplying appropriate programming information, receiving the same, subject to random hard or soft faults, and, in response, directing the operation of a frequency synthesizer (10). The feedback capability is accomplished by generating a feedback signal (35, 36) indicative of the programming information as applied to the frequency synthesizer, generating a reference signal representative of the appropriate programming information, comparing the two signals, and blocking undesirable operation of the frequency synthesizer if the comparison indicates the occurrence of a random hard or soft fault. Further disclosed is a wireless communications transceiver with the programmable frequency synthesizer arrangement.
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Manczko Tim J.
Neperud David D.
Sarocka Robert J.
Spensley, Jr. David H.
Walter Peter P.
Belzer Christine K.
Bethards Charles W.
Eisenzopf Reinhard J.
Motorola Inc.
Southard Donald B.
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