US 12,323,180 B2
Antenna array with antenna elements interconnected by controllable resistances
Guillaume Alexandre Blin, Carlisle, MA (US); Yu Zhu, Wellesley, MA (US); and Stephen Joseph Kovacic, Newport Beach, CA (US)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by Skyworks Solutions, Inc., Irvine, CA (US)
Filed on Apr. 20, 2022, as Appl. No. 17/659,996.
Claims priority of provisional application 63/201,268, filed on Apr. 21, 2021.
Prior Publication US 2022/0345172 A1, Oct. 27, 2022
Int. Cl. H04B 1/44 (2006.01); H04B 1/00 (2006.01); H04B 7/0413 (2017.01)
CPC H04B 1/44 (2013.01) [H04B 1/0064 (2013.01); H04B 7/0413 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A mobile device comprising:
a front-end system including a plurality of radio frequency circuits each including a power amplifier;
an antenna array including a plurality of controllable antennas each connected to an output of the power amplifier of a corresponding one of the plurality of radio frequency circuits, the plurality of controllable antennas including a first controllable antenna including a plurality of antenna elements interconnected by a plurality of variable resistors, the plurality of antennas elements arranged in a square array and fed by four signal feeds positioned at each of four corners of the square array, the plurality of radio frequency circuits including a first radio frequency circuit including a first power amplifier having an output configured to provide a radio frequency transmit signal to the four signal feeds, the radio frequency transmit signal propagating through the plurality of variable resistors to each of the plurality of antenna elements; and
a control circuit configured to control the plurality of variable resistors to beamform a transmit beam on the first controllable antenna, the control circuit configured to separately control a resistance of each of the variable resistors to a different resistance setting that controls tapering of a side lobe of the transmit beam, the control circuit further configured to individually set a plurality of analog control voltage settings of the plurality of variable resistors to control a signal attenuation level of the radio frequency transmit signal for each of the plurality of antenna elements.