Apparatus and method for low power amplification in a wireless communication system
First Claim
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1. A transmitter of a wireless communication system which comprises at least one antenna, the transmitter comprising:
- a digital signal processor for processing at least one baseband digital signal; and
at least one Radio Frequency (RF) signal processor for converting a respective baseband digital signal of the at least one baseband digital signal into an RF analog signal and for amplifying a power of the RF analog signal for at least two antenna elements of the RF signal processor through which the respective baseband signal is transmitted,wherein each of the at least two antenna elements includes;
a calibrator for calibrating transmission paths of the at least two antenna elements;
a beamformer for changing a phase and a gain of a corresponding divided signal to form a beam;
a power amplifier for amplifying a power of a signal output from the beamformer; and
an antenna part for radiating the power-amplified signal.
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Abstract
An apparatus and a method for beamforming with less heat in a wireless communication system including multiple antennas are provided. The apparatus includes a digital signal processor for processing at least one baseband digital signal, and at least one Radio Frequency (RF) signal processor for converting a respective baseband digital signal of the at least one baseband digital signal into an RF analog signal and for amplifying a power of the RF analog signal for one or more antenna elements constituting a respective antenna of the at least one antenna.
11 Citations
12 Claims
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1. A transmitter of a wireless communication system which comprises at least one antenna, the transmitter comprising:
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a digital signal processor for processing at least one baseband digital signal; and at least one Radio Frequency (RF) signal processor for converting a respective baseband digital signal of the at least one baseband digital signal into an RF analog signal and for amplifying a power of the RF analog signal for at least two antenna elements of the RF signal processor through which the respective baseband signal is transmitted, wherein each of the at least two antenna elements includes; a calibrator for calibrating transmission paths of the at least two antenna elements; a beamformer for changing a phase and a gain of a corresponding divided signal to form a beam; a power amplifier for amplifying a power of a signal output from the beamformer; and an antenna part for radiating the power-amplified signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for forming a beam in a wireless communication system which comprises at least one antenna having at least two antenna elements, the method comprising:
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for each of the at least two antenna elements, generating a phase for the beamforming by calibrating a transmission signal corresponding to each of the at least two antenna elements; changing a phase for forming at least one of a horizontal beam and a vertical beam of a signal to be transmitted over each of the at least two antenna elements using the generated phase; and amplifying a power of the phase-changed signal corresponding to each of the at least two antenna elements, wherein the calibration of the transmission signal comprises calibrating a transmission path and a reception path with respect to each of the at least two antenna elements. - View Dependent Claims (10, 11, 12)
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Specification