Phased Array System and Beam Scanning Method
AssigneeHuawei Technologies Co., Ltd.
InventorsHao Long, Fusheng Tang, Yanxing Luo
Life of this patent
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Abstract
A phased array system includes at least two traveling wave antennas arranged in parallel, and each traveling wave antenna includes at least two antenna units sequentially connected. A first end of each traveling wave antenna connects to a corresponding first radio frequency channel. The first end of each traveling wave antenna connects to a signal processing module of the phased array system by using the corresponding first radio frequency channel. A phase and/or an amplitude of a signal inputted by the signal processing module from the first end into the traveling wave antenna may be adjusted by adjusting a configuration of the first radio frequency channel.
Claims19
A phased array system, comprising:
- at least two traveling wave antennas arranged in parallel, wherein each traveling wave antenna comprises at least two sequentially connected antennas;
- at least two first radio frequency channels, wherein a first end of each traveling wave antenna is coupled to a corresponding first radio frequency channel;
- and
- a signal processor coupled to the first end of each of the at least two traveling wave antennas using the corresponding first radio frequency channel of the traveling wave antenna,
- wherein each of the at least two first radio frequency channels is configured to adjust a phase or an amplitude of a first signal inputted by the signal processor into the traveling wave antenna corresponding to the first radio frequency channel from the first end of the traveling wave antenna.
A beam scanning method for implementing beam scanning of a phased array system, wherein the phased array system comprises at least two traveling wave antennas arranged in parallel, at least two first radio frequency channels, and a signal processor, wherein each of the at least two traveling wave antennas comprises at least two sequentially connected antennas, wherein a first end of each of the at least two traveling wave antennas is coupled to a corresponding first radio frequency channel of the at least two first radio frequency channels, wherein the first end of each of the at least two traveling wave antennas is coupled to the signal processor using the corresponding first radio frequency channel of the traveling wave antenna, and wherein the method comprises:
- controlling each of the at least two first radio frequency channels corresponding to each of the at least two traveling wave antennas to adjust a phase, an amplitude, or both, of a first signal inputted by the signal processor into the traveling wave antenna corresponding to the first radio frequency channel from the first end of the traveling wave antenna so that a beam of the phased array system points to an expected direction in a dimension perpendicular to a direction of the traveling wave antenna.
A beam scanning method for implementing beam scanning of a phased array system, wherein the phased array system comprises at least two traveling wave antennas arranged in parallel, at least two first radio frequency channels, at least two second radio frequency channels, and a signal processor, wherein each of the at least two traveling wave antenna comprises at least two sequentially connected antennas, wherein a first end of each of the at least two traveling wave antennas is coupled to a corresponding first radio frequency channel of the at least two first radio frequency channels, wherein the first end of each of the at least two traveling wave antennas is coupled to the signal processor of the phased array system using the corresponding first radio frequency channel of the traveling wave antenna, wherein a second end of each of the at least two traveling wave antennas is coupled to a corresponding second radio frequency channel of the at least two radio frequency channels, wherein the second end of each of the at least two traveling wave antennas is coupled to the signal processor using the corresponding second radio frequency channel of the traveling wave antenna, and wherein the method comprises performing the following so that a beam of the phase array system points to an expected direction:
- controlling each of the at least two first radio frequency channels of each of the at least two traveling wave antennas to adjust a phase, an amplitude, or both, of a first signal inputted by the signal processor into the traveling wave antenna from the first end of the traveling wave antenna;
- and
- controlling each of the at least two second radio frequency channels of each of the at least two second radio frequency channels to adjust a phase, an amplitude, or both, of a second signal inputted by the signal processor into the traveling wave antenna from the second end of the traveling wave antenna,
- wherein a phase difference, an amplitude difference, or both, between the first ends of the at least two traveling wave antennas, and a phase difference, an amplitude difference, or both, between the second ends of the at least two traveling wave antennas are used to control a direction of the beam of the phased array system in a dimension perpendicular to a direction of the traveling wave antenna, and
- wherein a phase difference, an amplitude difference, or both, between the first end and the second end of each of the at least two traveling wave antennas are used to control a direction of the beam of the phased array system in a dimension parallel to the direction of the traveling wave antenna.
Dependencies are inferred from the claim text.