公开(公告)号：US10958306B2

公开(公告)日：2021-03-23

申请号：US16818191

申请日：2020-03-13

Applicant: Apple Inc.

Inventor： Xiaoming Yu ,  Alejandro J. Marquez ,  Lei Li ,  Peter M. Agboh ,  Shang-Te Yang ,  Vusthla Sunil Reddy ,  Pradeep K. Marri ,  Manjit S. Walia ,  Ali Pourghorban Saghati

IPC: H04B1/7176 ,  H04B1/7163 ,  H04B1/717

Abstract: Some embodiments include a system, method, and computer program product for managing the Ultra Wideband (UWB) systems, especially when the UWB system is collocated with another wireless system (e.g., WiFi) to transmit and/or receive UWB signals with an occupied bandwidth (OBW) that satisfies a UWB OBW standard (e.g., a UWB OBW>=500 MHz.) In some embodiments a TailBit signal (e.g., a periodic signal at a selected frequency) is added to a UWB packet to generate frequency components at the selected frequency that enables the power spectrum of the TailBit UWB signal to satisfy the UWB OBW standard. In some embodiments an altered code sequence is used to generate an altered spread signal, where the altered code sequence reduces or removes a frequency component peak near DC frequency of the power spectrum of an altered UWB signal, resulting in altered UWB OBW that satisfies the UWB OBW standard.

公开(公告)号：US10886781B2

公开(公告)日：2021-01-05

申请号：US15997508

申请日：2018-06-04

Applicant: Apple Inc.

Inventor： Soumya Mantha ,  Manjit S. Walia ,  Rahul A. Sabnani ,  Yiling Xu

IPC: H02J50/12 ,  H02M7/537 ,  H01F38/14 ,  H02J7/02

Abstract: A wireless power transmitting device includes a plurality of coils and respective wireless power transmitting circuitry coupled to each coil. The wireless power transmitting circuitry coupled to each coil may include an inverter and adjustable circuitry that is configured to mitigated radiated emissions in nominally passive coils in the power transmitting device. The wireless power transmitting circuitry coupled to each coil in the wireless power transmitting device may include adjustable circuitry coupled to an inverter output terminal in parallel or in series with the coil. The adjustable circuitry may have a variable capacitance that is controlled based on whether the coil is in an active or passive mode. The capacitance of the adjustable circuitry may be varied in a repeating cycle when the coil is in a passive mode. The adjustable circuitry may include one or more capacitors coupled between the inverter output terminal and ground.

公开(公告)号：US09560601B2

公开(公告)日：2017-01-31

申请号：US14641145

申请日：2015-03-06

Applicant: APPLE INC.

Inventor： Jianjian Li ,  Vikas O. Jain ,  Peter M. Agboh ,  Kaushal K. Mangtani ,  Manjit S. Walia ,  Mohit Narang ,  Abhishek Mehta ,  Ruben Caballero

IPC: H04W52/22

CPC classification number: H04W52/226 ,  H04W52/367 ,  H04W52/52

Abstract: Systems and method for improving design and/or operation of a radio frequency system are provided. One embodiment provides a radio frequency system, which includes a first look-up table that describes a static reference value, association between a maximum output power and a first specification level, and association between a first back off value and a second specification level, in which the first back off value is defined in relation to the static reference value and used to determine a first reduced output power; and a second look-up table that describes association between the maximum output power and a first set of operational parameters and association between the first reduced output power and a second set of operational parameters. The radio frequency system wirelessly transmits the analog electrical signal in compliance with an instructed specification level instruction by determining a desired output power based on the instructed specification level using the first look-up table and implementing operational parameters determined based on the desired output power using the second look-up table.

Abstract translation: 提供了改善射频系统的设计和/或操作的系统和方法。 一个实施例提供一种射频系统，其包括描述静态参考值的第一查找表，最大输出功率和第一规范级之间的关联以及第一退避值和第二规范级之间的关联， 其中第一退避值相对于静态参考值定义并用于确定第一减小输出功率; 以及第二查找表，其描述了最大输出功率与第一组操作参数之间的关联以及第一降低输出功率与第二组操作参数之间的关联。 无线电频率系统通过使用第一查找表根据所指示的规格级别确定期望的输出功率并根据所指示的规范级别指令无线地发送模拟电信号，并且使用第一查询表确定基于期望输出功率确定的操作参数 第二查表。