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US 2004/0106382 A1Published application
Repeater calibration system
AssigneeAndrew Corporation
InventorsBarry Mark Fisher, Jeramy Scott Leonard, James Lyn Alford, Donald G. Jackson
Life of this patent
Estimating the term…
Abstract
A system calibrates the gain of a repeater by determining a value based on the difference between respective amplitude measurements made while the repeater is transmitting and while it is not. The value is compared to threshold data in order to determine whether repeater attenuation should be incrementally adjusted.
Claims40
A repeater, comprising:
- receiving and transmitting antennas and repeater circuitry configured to receive and transmit a plurality of signals;
- a switching circuit configured to switch transmit signals in a first position to the transmitting antenna and in a second position to a load;
- a variable attenuator configured to adjust a gain of the repeater circuitry;
- a power detector configured to detect signal levels of the transmit signals with the switching circuit alternatively in the first and second position;
- and
- controller circuitry configured to compare a value reflective of the detected first position and second position signal levels against threshold values and to vary a setting of the variable attenuator in response to the comparison.
3 more elements
A repeater, comprising:
- receiving and transmitting antennas and repeater circuitry configured to receive and transmit a plurality of signals;
- a switching circuit configured to switch transmit signals in a first position to the transmitting antenna and in a second position to a load;
- a variable attenuator configured to adjust a gain of the repeater circuitry;
- a power detector configured to detect signal levels of the transmit signals with the switching circuit alternatively in the first and second position;
- and
- controller circuitry configured to automatically vary a setting of the variable attenuator in response to the detected signal levels.
3 more elements
A repeater, comprising:
- receiving and transmitting antennas and repeater circuitry configured to receive and transmit a plurality of signals;
- a switching circuit configured to switch transmit signals in a first position to the transmitting antenna and in a second position to a load;
- a variable gain adjusting circuit configured to adjust a gain of the repeater circuitry;
- a power detector configured to detect signal levels of the transmit signals with the switching circuit alternatively in the first and second position;
- and
- controller circuitry configured to compare a value reflective of the detected first position and second position signal levels against threshold values and to vary the gain of the repeater circuitry via the variable gain adjusting circuit in response to the comparison.
3 more elements
A method of calibrating gain in a repeater, comprising:
- detecting a first amplitude measurement of a first incoming signal received by a repeater while the repeater is transmitting;
- detecting a second amplitude measurement of a second incoming signal received by the repeater while the repeater is not transmitting;
- determining a value using both the first and second amplitude measurements;
- comparing the value to a threshold value;
- and
- adjusting an attenuation level in response to the comparison.
3 more elements
A method for calibrating gain within a repeater, comprising
- detecting a peak measurement of an incoming signal received by a repeater;
- detecting a valley measurement of the incoming signal received by the repeater;
- determining a mathematical value using both the peak and valley measurements;
- correlating the mathematical value to a threshold value associated with an attenuation level;
- and
- adjusting the attenuation level in response to the correlation.
3 more elements
Dependencies are inferred from the claim text.