US 12,431,947 B2
Beam steering method and device using frequency modulation and phase shift
Jiwoong Yu, Sejong-si (KR)
Assigned to KOREA ASTRONOMY AND SPACE SCIENCE INSTITUTE, Daejeon (KR)
Filed by KOREA ASTRONOMY AND SPACE SCIENCE INSTITUTE, Daejeon (KR)
Filed on Feb. 8, 2024, as Appl. No. 18/507,691.
Prior Publication US 2024/0178890 A1, May 30, 2024
Int. Cl. H04L 5/12 (2006.01); H04B 7/0426 (2017.01); H04B 7/06 (2006.01)
CPC H04B 7/043 (2013.01) [H04B 7/06958 (2023.05)] 14 Claims
OG exemplary drawing
 
1. A beam steering device, comprising:
a plurality of antenna elements each that output a received signal to an outside in a predetermined beam direction and receive the signal received from the outside;
a plurality of phase shifters each that are connected to the plurality of antenna elements to adjust and output a phase of the signal received by the antenna elements or receive the signal from the antenna elements to adjust and output the phase;
a signal processor that generates an IQ signal of a baseband waveform and outputs the generated IQ signal to the phase shifter or extracts the IQ signal from the signal received from the phase shifter; and
a control unit that controls the plurality of antenna elements, the plurality of phase shifters, and the signal processor so that the signal is output or received in a predetermined beam direction,
wherein the control unit sets the array of the plurality of antenna elements during transmission and the array of the plurality of antenna elements during reception to be different from each other so that a grating lobe generated during the transmission through the plurality of antenna elements and a grating lobe or a side lobe generated during the reception do not overlap each other.