US 12,431,620 B2
Phased array antenna
Kiyoshi Kobayashi, Sakura (JP); Ken Sakuma, Sakura (JP); Mark Yeck, Bloomingdale, NJ (US); Bodhisatwa Sadhu, Yorktown Heights, NY (US); and Arun Paidimarri, New York, NY (US)
Assigned to Fujikura Ltd., Tokyo (JP); and International Business Machines Corporation, Armonk, NY (US)
Appl. No. 18/016,723
Filed by Fujikura Ltd., Tokyo (JP); and International Business Machines Corporation, New York, NY (US)
PCT Filed Feb. 8, 2021, PCT No. PCT/US2021/017016
§ 371(c)(1), (2) Date Jan. 18, 2023,
PCT Pub. No. WO2022/169463, PCT Pub. Date Aug. 11, 2022.
Prior Publication US 2023/0282976 A1, Sep. 7, 2023
Int. Cl. H01Q 3/28 (2006.01); H01Q 3/38 (2006.01); H04B 7/06 (2006.01)
CPC H01Q 3/38 (2013.01) [H01Q 3/28 (2013.01); H04B 7/0617 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A phased array antenna comprising:
a plurality of antenna elements;
a plurality of signal paths that are connected to each of the antenna elements;
each of the antenna elements is connected to the plurality of signal paths to function as a transmitter or a receiver,
a storage unit configured to store a set value of at least one of amplitude or phase of a signal passed through at least one predefined reference path among the plurality of signal paths with regard to at least one of the antenna elements, the set value for at least one of antenna beam patterns to be set; and
an amplitude and phase control unit configured to control at least one of the amplitude or the phase of the signal passed through the reference path connected to the one of the antenna elements that the set value thereof is stored in the storage unit, by using the set value stored in the storage unit,
and configured to control amplitude or phase of a signal passed through the signal path other than the reference path connected to the one of the antenna elements by using the set value of the reference path stored in the storage unit,
wherein
the storage unit further stores an inter-path error between the reference path and the signal path other than the reference path, and
the amplitude and phase control unit controls at least one of the amplitude or the phase of the signal passed through the signal path other than the reference path, by using a corrected set value obtained by correcting the set value stored in the storage unit by the inter-path error.