Patent ID: 11889436
Assignee: QUALCOMM INCORPORATED
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A mobile device in a wireless network configured for calibration of group delay, the mobile device comprising:
a transceiver;
a plurality of power amplifiers coupled to the transceiver;
a plurality of bandpass filters coupled to the plurality of power amplifiers;
an antenna array coupled to the plurality of bandpass filters; and
at least one processor configured to:
send a first signal on a transmission path through one or more of the transceiver, amplifier, bandpass filters, and the antenna array;
receive the first signal on a reception path, wherein the first signal sent on the transmission path by the mobile device is fed back by the mobile device in a closed loop and received by the mobile device on the reception path through the one or more of the transceiver, amplifier, bandpass filters, and the antenna array, wherein the closed loop comprises a near field radiated closed loop that includes a first antenna of the mobile device that transmits the first signal and a second antenna of the mobile device that receives the first signal;
determine a transmission and reception group delay within the mobile device based on at least (1) a time of transmission of the first signal on the transmission path at a modem, (2) a time of arrival of the first signal on the reception path at the modem, (3) a reduction in a first time between the time of transmission and the time of arrival by a second time associated with a coupling path between the first antenna and the second antenna; and
set a measured processing delay of the mobile device based on the transmission and reception group delay within the mobile device.