公开(公告)号：US20250105862A1

公开(公告)日：2025-03-27

申请号：US18807791

申请日：2024-08-16

Applicant: Apple Inc.

Inventor： Bradley D. Scoles ,  Qishan Yu ,  Christopher J. Huber

IPC: H04B1/04 ,  H03F3/24

Abstract: An electronic device may include a radio-frequency front end (RFFE) module coupled to antenna(s). The module may have a power amplifier, a transmit switch, a receive switch, low noise amplifiers, and an antenna switch. The transmit switch may be coupled to the antenna switch over transmit paths. The antenna switch may be coupled to the low noise amplifiers over receive paths. Filters on different transmit paths may have passbands overlapping the transmit bands of respective first and second frequency bands. A filter on the receive path may have a passband overlapping the receive bands of the first and second frequency bands. The antenna switch may have multiple throws for concurrently coupling one of the transmit paths and one of the receive paths to the antenna(s). Combining filters and switching in this way may minimize the number of low noise amplifiers and filters on the module without sacrificing performance.

公开(公告)号：US20250096821A1

公开(公告)日：2025-03-20

申请号：US18745278

申请日：2024-06-17

Applicant: Apple Inc.

Inventor： Bradley D. Scoles ,  Qishan Yu ,  Christopher J. Huber

IPC: H04B1/00 ,  H04B1/40

Abstract: In an electronic device, a transmitter and a receiver may each be coupled to one or more antennas to enable the electronic device to both transmit and receive wireless signals. The electronic device may include two or more antennas coupled to a radio frequency front end module that receives different downlink signals on different frequency bands. For example, a switch may couple a first antenna to a first duplexer to support transmitting and/or receiving signals within a first frequency band and a second antenna to a second duplexer to support transmitting and/or receiving signals within a second frequency band. As such, the electronic device may concurrently transmit and/or receive two signals having different frequencies, which may improve downlink throughput and/or support downlink carrier aggregation.

公开(公告)号：US20240364282A1

公开(公告)日：2024-10-31

申请号：US18308505

申请日：2023-04-27

Applicant: Apple Inc.

Inventor： Bradley D. Scoles ,  Qishan Yu ,  Christopher J. Huber

IPC: H03F3/24

CPC classification number: H03F3/245 ,  H03F2200/102 ,  H03F2200/451

Abstract: An electronic device can include a first group of radio-frequency amplifiers coupled to one or more first antenna(s) disposed at a first end of the device, a second group of radio-frequency amplifiers coupled to one or more second antenna(s) disposed at a second opposing end of the device, a first envelope tracking integrated circuit (ETIC) coupled to the first group of radio-frequency amplifiers, and a second envelope tracking integrated circuit (ETIC) coupled to the second group of radio-frequency amplifiers. The first and second ETICs can be coupled together via a bidirectional input-output voltage path and a feedback voltage path. At least the first ETIC can include a first envelope tracking amplifier, a second envelope tracking amplifier, a voltage converter coupled to an output of the first envelope tracking amplifier, and a feedback controller coupled to an output of the second envelope tracking amplifier and configured to adjust the voltage converter.