Method of calibrating an active antenna and active antenna
First Claim
Patent Images
1. A method of calibrating an active antenna to be used in a base transceiver station for mobile communication, the method comprising:
- correlating at least one receiver of a plurality of receivers of the active antenna to a calibration signal;
analyzing a received phase pattern and adjusting the active antenna until all of the receivers receive substantially in equiphase; and
applying a beam forming function and a phase pattern as forward adjustment to the active antenna.
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Abstract
A method of calibrating an active antenna and an active antenna is disclosed, wherein the active antenna is designed to be used in a base transceiver station for mobile communication. Firstly, at least one receiver of the active antenna is correlated to a calibration signal. Secondly, a received phase pattern is analyzed. Then, the active antenna is adjusted until all receivers receive substantially in equiphase. Finally, a beam forming function and a phase pattern are applied as forward adjustment to the active antenna.
22 Citations
21 Claims
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1. A method of calibrating an active antenna to be used in a base transceiver station for mobile communication, the method comprising:
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correlating at least one receiver of a plurality of receivers of the active antenna to a calibration signal; analyzing a received phase pattern and adjusting the active antenna until all of the receivers receive substantially in equiphase; and applying a beam forming function and a phase pattern as forward adjustment to the active antenna. - View Dependent Claims (2, 3, 4, 16, 17, 18)
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5. A method of calibrating an active antenna to be used in a base transceiver station for mobile communication, comprising:
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turning off all of a plurality of transmitters of the active antenna; switching at least one receiver to a transmit band of at least one transmitter of the active antenna after all the transmitters of the active antenna are turned off; capturing phase and delay of a calibration signal at the transmit band; turning on the transmitters after capturing the phase and the delay of the calibration signal at the transmit band; switching on reflection means of the active antenna so that the at least one receiver receives a signal at the transmit band; calibrating the at least one transmitter using phase and delay values of the reflected transmitter signal read from a digital pre distortion device; and applying a beam forming function and a phase pattern as forward adjustment to the active antenna. - View Dependent Claims (6, 7, 8)
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9. An active antenna, designed to be used in a base transceiver station for mobile communication, the antenna comprising:
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at least one receiver of a plurality of receivers of the active antenna; a correlator correlating the least one receiver to a calibration signal; an analyzer analyzing a received phase pattern and adjusting the active antenna until all the receivers of the active antenna receive signals substantially in equiphase; and means for applying a beam forming function and a phase pattern as forward adjustment to the active antenna. - View Dependent Claims (10, 11, 12, 13, 14, 15, 19, 20, 21)
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Specification