TCAS transmitter phase tuning system and method
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United States of America Patent
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Sep 4, 2001
Grant Date -
N/A
app pub date -
Sep 21, 1999
filing date -
Sep 21, 1999
priority date (Note) -
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Abstract
A TCAS receiver/transmitter which uses an improved calibration scheme for improving the ability of the device to transmit in a narrow directional field where the device uses the transmitter frequency source to generate signals for calibration purposes. The calibration uses a technique of simultaneously transmitting from two antennas and manipulating the phase of the signal through successive settings. The signals are monitored by the remaining two antennas and calibration adjustments are made in response thereto.
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