Apparatus and method for low power amplification in a wireless communication system
AssigneeSamsung Electronics Co., Ltd.
InventorsCheol-Woo Ahn, Kweon Na, Kae-Oh Sun
Life of this patent
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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.
Claims12
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.
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:
- 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.
Dependencies are inferred from the claim text.