Temperature compensation system and method for an array antenna system
First Claim
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1. An antenna system, comprising:
- a remote temperature sensor configured to provide a remote temperature signal;
a plurality of signal paths, wherein each signal path comprises;
a local temperature sensor configured to provide a local temperature signal indicative of a temperature in a signal path of the signal paths, wherein the remote temperature signal is indicative of a temperature outside of the signal paths;
an antenna element;
a phase shifter or time delay unit;
a variable gain power amplifier; and
a temperature compensation circuit comprising a slope control circuit and a temperature variable gain amplifier; and
wherein the temperature variable gain amplifier, the antenna element, the phase shifter, and the variable gain power amplifier are disposed in series in the signal path of the plurality of signal paths, wherein the slope control circuit is configured to receive the remote temperature signal and the local temperature signal and provide a gain control signal to the temperature variable gain amplifier to compensate for gain variation due to temperature variation in the signal path.
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Abstract
A system and method compensates for temperature in a signal path of an antenna array. The signal path includes an antenna element, a first phase shifter or a time delay unit, and a first variable gain power amplifier. The system and method can provide at least one of a local temperature signal, a remote temperature signal, and both the local temperature signal and the remote temperature signal to a slope control circuit, and provide a phase control signal or a gain control signal using the slope control circuit at least partially in response to the at least one of the local temperature signal, the remote temperature signal, and both the local temperature signal and the remote temperature signal.
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Citations
20 Claims
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1. An antenna system, comprising:
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a remote temperature sensor configured to provide a remote temperature signal; a plurality of signal paths, wherein each signal path comprises; a local temperature sensor configured to provide a local temperature signal indicative of a temperature in a signal path of the signal paths, wherein the remote temperature signal is indicative of a temperature outside of the signal paths; an antenna element; a phase shifter or time delay unit; a variable gain power amplifier; and a temperature compensation circuit comprising a slope control circuit and a temperature variable gain amplifier; and wherein the temperature variable gain amplifier, the antenna element, the phase shifter, and the variable gain power amplifier are disposed in series in the signal path of the plurality of signal paths, wherein the slope control circuit is configured to receive the remote temperature signal and the local temperature signal and provide a gain control signal to the temperature variable gain amplifier to compensate for gain variation due to temperature variation in the signal path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of compensating for temperature in a signal path of an antenna array, the method comprising:
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providing a remote temperature signal and a local temperature signal to a slope control circuit in the signal path, the signal path comprising an antenna element, a first phase shifter or a time delay unit, and a first variable gain power amplifier, the local temperature signal being indicative of a local temperature in the signal path and the remote temperature signal being indicative of a remote temperature outside of the signal path; and providing a gain control signal using the slope control circuit at least partially in response to the remote temperature signal and the local temperature signal to a second variable gain control amplifier in the signal path. - View Dependent Claims (12, 13, 14, 15)
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16. A method of compensating for temperature in a signal path of an antenna array, the method comprising:
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providing a local temperature signal and a remote temperature signal to a slope control circuit in the signal path, the signal path comprising an antenna element, a first phase shifter or time delay unit, and a first variable gain power amplifier, the local temperature signal being indicative of a local temperature in the signal path and the remote temperature signal indicative of being a remote temperature outside of the signal path; and providing a phase control signal using the slope control circuit at least partially in response both the local temperature signal and the remote temperature signal to a second phase shifter or a second time delay unit in the signal path. - View Dependent Claims (17, 18, 19, 20)
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Specification