公开(公告)号：US20240413845A1

公开(公告)日：2024-12-12

申请号：US18641901

申请日：2024-04-22

Applicant: Apple Inc.

Inventor： Bradley D Scoles ,  Christopher J Huber ,  Stephan Henzler ,  Qishan Yu

IPC: H04B1/00 ,  H04B1/04

Abstract: An electronic device may include transceivers, radio-frequency front end (RFFE) circuitry, antennas, and a feedback receiver. The RFFE circuitry may include power amplifier (PA) modules that each transmits radio-frequency signals in a corresponding group of frequency bands. The modules may include power amplifiers, a band selection switch, and an antenna selection switch coupled to the band selection switch over a signal path. A radio-frequency coupler may be disposed on the signal path between the band selection switch and the antenna selection switch. A PA module may include a feedback receiver aggregation switch. The aggregation switch may be coupled to the radio-frequency coupler on its PA module and radio-frequency coupler(s) on other PA modules over feedback paths. The aggregation switch may pass coupled signals from the couplers to the feedback receiver for measurement.