Method for detecting an oscillation in an on-frequency repeater
First Claim
1. A method of detecting oscillation in an on-frequency repeater having an RF signal path coupled between an input antenna and an output antenna, the method comprising steps of:
- detecting a first RF signal power level within the RF signal path during an un-muted period in which transmission of an output RF signal through the output antenna is enabled;
detecting a second RF signal power level within the RF signal path during a mute period in which transmission of an RF signal through the output antenna is disabled;
comparing a difference between the first and second detected RF signal power levels to a predetermined threshold; and
determining a likelihood of oscillation based on the comparison result.
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Abstract
A method of detecting oscillation in an on-frequency repeater having an RF signal path coupled between an input antenna and an output antenna. In accordance with the present invention, a first RF signal power level within the RF signal path is detected during an un-muted period in which transmission of an output RF signal through the output antenna is enabled. A second RF signal power level within the RF signal path is detected during a mute period in which transmission of an RF signal through the output antenna is disabled. The first and second detected RF signal power levels are then compared, which provides an indication of signal leakage, and thus oscillation.
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Citations
15 Claims
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1. A method of detecting oscillation in an on-frequency repeater having an RF signal path coupled between an input antenna and an output antenna, the method comprising steps of:
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detecting a first RF signal power level within the RF signal path during an un-muted period in which transmission of an output RF signal through the output antenna is enabled; detecting a second RF signal power level within the RF signal path during a mute period in which transmission of an RF signal through the output antenna is disabled; comparing a difference between the first and second detected RF signal power levels to a predetermined threshold; and determining a likelihood of oscillation based on the comparison result. - View Dependent Claims (2, 3, 4)
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5. A method of controlling oscillation in an on-frequency repeater having an RF signal path coupled between an input antenna and an output antenna, the method comprising steps of:
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detecting a first RF signal power level within the RF signal path during an un-muted period in which transmission of an output RF signal through the output antenna is enabled; detecting a second RF signal power level within the RF signal path during a mute period in which transmission of an RF signal through the output antenna is disabled; comparing the first and second detected RF signal power levels; and adjusting oscillation in the repeater by adjusting a gain of the RF signal path based on the comparison result. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification