US 12,436,254 B2
Systems and methods for object detection by radio frequency systems
Berke Cetinoneri, Palo Alto, CA (US); Ioannis Sarkas, San Carlos, CA (US); and Qishan Yu, San Jose, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Sep. 22, 2023, as Appl. No. 18/472,939.
Application 18/472,939 is a continuation of application No. 17/543,374, filed on Dec. 6, 2021, granted, now 11,828,833.
Application 17/543,374 is a continuation of application No. 16/362,124, filed on Mar. 22, 2019, granted, now 11,194,032, issued on Dec. 7, 2021.
Prior Publication US 2024/0012124 A1, Jan. 11, 2024
Int. Cl. G01S 13/04 (2006.01); G01S 7/02 (2006.01); G01S 7/03 (2006.01); G01S 13/00 (2006.01)
CPC G01S 13/04 (2013.01) [G01S 7/024 (2013.01); G01S 7/03 (2013.01); G01S 13/003 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
a radio frequency integrated circuit (RFIC) configured to
form a first beam using a first phased antenna array, the first phased antenna array configured to transmit and receive first cellular signals, and
form a second beam using a second phased antenna array, the second phased antenna array configured to transmit and receive second cellular signals;
a transmission chain and a receiving chain coupled between the first phased antenna array, the second phased antenna array, and a modem; and
processing circuitry communicatively coupled to the transmission chain and to the receiving chain, the processing circuitry configured to
transmit, using the first phased antenna array, a reference signal at an output power,
receive, using the second phased antenna array, a reflection signal based on the reference signal,
cause the transmission chain to adjust the output power based on the reference signal, the reflection signal, and a comparison threshold, and
transmit, using the first phased antenna array, a cellular signal at the adjusted output power to a cellular network.