US 12,284,020 B2
Amplitude and phase alignment of phased array elements
Arun Paidimarri, South Salem, NY (US); Wooram Lee, Briarcliff Manor, NY (US); Armagan Dascurcu, New York, NY (US); Bodhisatwa Sadhu, Peekskill, NY (US); Alberto Valdes Garcia, Chappaqua, NY (US); and Caglar Ozdag, White Plains, NY (US)
Assigned to International Business Machines Corporation, Armonk, NY (US)
Filed by International Business Machines Corporation, Armonk, NY (US)
Filed on Sep. 19, 2022, as Appl. No. 17/947,223.
Prior Publication US 2024/0097772 A1, Mar. 21, 2024
Int. Cl. H04B 7/08 (2006.01); H04B 1/30 (2006.01); H04B 7/06 (2006.01)
CPC H04B 7/086 (2013.01) [H04B 1/30 (2013.01); H04B 7/0682 (2013.01); H04B 2001/307 (2013.01)] 19 Claims
OG exemplary drawing
 
14. A system comprising:
a beamforming circuit including a plurality of transmitting elements and a plurality of receiving elements;
a mixer;
at least one processor configured to:
activate a transmitting element among the plurality of transmitting elements;
activate a receiving element among the plurality of receiving elements;
the mixer being configured to mix an input of the activated transmitting element and an output of the activated receiving element to generate a DC signal that represents phase and amplitude of the activated transmitting element and the activated receiving element;
the at least one processor is further configured to:
receive the DC signal from the mixer;
adjust a setting of the beamforming circuit to receive additional DC signals from the mixer, wherein the additional DC signals represent phases and amplitudes of the activated transmitting element and the activated receiving element under the adjusted setting, wherein adjustment of the setting of the beamforming circuit comprises sweeping a phase shifter in at least one of the activated transmitting element and the activated receiving element and the sweeping includes setting the phase shifter to a plurality of different phase settings within a predefined amount of time; and
determine calibration values for the beamforming circuit based on the DC signal and the additional DC signals.