Method and circuit arrangement for offset correction in a TDMA radio receiver
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United States of America Patent
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-
Sep 2, 1997
Grant Date -
N/A
app pub date -
Jan 14, 1993
filing date -
Jan 18, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The levels of received time-division multiple access (TDMA) signals may vary widely from section to section. In DC-coupled amplifier circuits, the received signals are distorted by offset voltages. Conventional correcting or balancing methods use control mechanisms which do not allow for level variations or offset drift and tend to result in miscompensation of individual signal sections. Other methods depend on time intervals defined in the received signal and having a known average value. It is the object of the invention to provide a correcting method and a circuit arrangement for carrying out the same which achieve a self-adjusting, not widely varying (floating) correction value, thus avoiding miscompensation. This is accomplished by selecting the individual time slots in a comparator with the aid of limit value.
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