公开(公告)号：US11923901B2

公开(公告)日：2024-03-05

申请号：US17834695

申请日：2022-06-07

Applicant: Apple Inc.

Inventor： Zdravko Boos ,  Bertram R Gunzelmann

IPC: H04B10/112 ,  H04B10/50 ,  H04B10/54

CPC classification number: H04B10/112 ,  H04B10/501 ,  H04B10/541

Abstract: An electronic device may include an antenna that conveys wireless signals at frequencies greater than 100 GHz. The antenna may include a radiating element coupled to a uni-travelling-carrier photodiode (UTC PD). An optical path may illuminate the UTC PD using a first optical local oscillator (LO) signal and a second optical LO signal. An optical phase shift may be applied to the first optical LO signal. A Mach-Zehnder modulator (MZM) may be interposed on the optical path. During signal transmission, the MZM may modulate wireless data onto the second optical LO signal while control circuitry applies a first bias voltage to the UTC PD. During signal reception, the control circuitry may apply a second bias voltage to the UTC PD that configures the UTC PD to convert received wireless signals into intermediate frequency signals and/or optical signals.

公开(公告)号：US20230421241A1

公开(公告)日：2023-12-28

申请号：US18322950

申请日：2023-05-24

Applicant: Apple Inc.

Inventor： Stefan Meyer ,  Jan Ellenbeck ,  Bertram R Gunzelmann ,  Norman Goris

IPC: H04B7/145 ,  H04B7/04

CPC classification number: H04B7/145 ,  H04B7/04013

Abstract: A wireless access point (AP) may communicate with a user equipment (UE) device via reflection off a reflective device having an array of fixed or adjustable reflectors in different orientations. The AP may illuminate different portions of an area by pointing a signal beam to different reflectors and/or by controlling the reflective device to electrically rotate the reflectors. The AP may calibrate the position of the reflective device and may establish wireless communications with the UE device by performing a sweep of signal beams over the reflectors and/or by controlling the reflective device to sweep over different reflector orientations. The AP may track movement of the UE device over time. The AP may sweep the AP beam over a subset of the reflectors around an active reflector to maintain communications with the UE device even as the UE device moves over time.

公开(公告)号：US20230327690A1

公开(公告)日：2023-10-12

申请号：US18184555

申请日：2023-03-15

Applicant: Apple Inc.

Inventor： Zdravko Boos ,  Bertram R Gunzelmann ,  Nedim Muharemovic ,  Ramin Khayatzadeh

IPC: H04B1/04 ,  H04B1/18 ,  H03F3/195 ,  H03F1/56

CPC classification number: H04B1/0458 ,  H04B1/18 ,  H03F2200/451 ,  H03F1/565 ,  H03F3/195

Abstract: An electronic device may include wireless circuitry with light sources, a set of photodiodes, a resonating element, and a common gate amplifier (CGA). In a transmit mode, the photodiodes may use optical local oscillators to generate equal portions of an antenna current amplified by the CGA for transmission by the resonating element. In a receive mode, the resonating element may generate an antenna current which is amplified by the amplifier and passed to the photodiodes. Including multiple photodiodes coupled to the amplifier in a current sharing configuration may serve to boost power. The amplifier may exhibit a wide bandwidth, may perform impedance matching between the resonating element and the photodiodes, and may isolate the photodiodes from antenna mismatch. The antenna may be integrated into a phased antenna array to further boost power.

公开(公告)号：US20230101322A1

公开(公告)日：2023-03-30

申请号：US17827329

申请日：2022-05-27

Applicant: Apple Inc.

Inventor： Bertram R Gunzelmann

IPC: H04B10/61 ,  H01Q9/06

Abstract: A first device may generate optical signals of different polarizations. Photodiodes may use the optical signals to transmit wireless signals at different polarizations and at a frequency greater than 100 GHz using the optical signals. A second device may receive the wireless signals and may convert the wireless signals into optical signals. A Stokes vector receiver on the second device may generate Stokes vectors based on the optical signals. Control circuitry on the second device may use the Stokes vectors generated for a series of training data in the wireless signals to generate a rotation matrix that characterizes polarization rotation between the first and second devices. The control circuitry may multiply wireless data in subsequently received wireless signals by the rotation matrix to mitigate the polarization rotation and other transmission impairments while using minimal resources.

公开(公告)号：US20230087648A1

公开(公告)日：2023-03-23

申请号：US17827120

申请日：2022-05-27

Applicant: Apple Inc.

Inventor： Bertram R Gunzelmann

IPC: H01Q3/26 ,  H01Q15/24 ,  H04B10/50

Abstract: A wireless system may include a central processor and an access point. The central processor may generate an optical signal on an optical fiber. The optical signal may include an optical local oscillator (LO) signal and one or more carriers. The central processor may modulate different combinations of transverse optical modes, orbital angular momentum, polarization, and/or carrier frequency of the optical signal to concurrently convey respective wireless data streams. The orthogonality of the transverse optical modes, orbital angular momentum, polarization, and carrier frequency may allow many wireless data streams to be modulated onto the optical signal and concurrently transmitted and propagated on the optical fiber independent of each other for transmission to one or more external devices.