公开(公告)号：US20240097324A1

公开(公告)日：2024-03-21

申请号：US17947006

申请日：2022-09-16

Applicant: Apple Inc.

Inventor： Yuancheng Xu ,  Thomas E Biedka ,  Jingni Zhong ,  Hongfei Hu ,  Simran Singh ,  Allen S Kwon ,  Carlo Di Nallo ,  Jayesh Nath ,  Mattia Pascolini

IPC: H01Q3/24 ,  H01Q1/24 ,  H01Q5/35 ,  H01Q5/378

CPC classification number: H01Q3/24 ,  H01Q1/241 ,  H01Q5/35 ,  H01Q5/378

Abstract: An electronic device may be provided with a first antenna fed by a first path and a second antenna fed by a second path. A first coupler may be disposed on the first path, a second coupler may be disposed on the second path, and a feedback path may couple the couplers to a receiver. A low-pass filter may be disposed on the second path. The first antenna may transmit signals in a low band. Some of the signals may couple onto the second antenna. The second coupler may pass the coupled signals to the receiver. Control circuitry may generate a scattering parameter value characterizing the coupling of the signals from the first antenna onto the second antenna. The scattering parameter value may be used to determine when to switch the first antenna out of use and the second antenna into use for covering the low band.