公开(公告)号：US10985793B1

公开(公告)日：2021-04-20

申请号：US16595337

申请日：2019-10-07

Applicant: QUALCOMM Incorporated

Inventor： Chan Hong Park ,  Charles James Persico ,  Beomsup Kim ,  Yongwang Ding ,  Jin-Su Ko

IPC: H04B1/68 ,  H04B1/40 ,  H04M1/02 ,  H03F3/213 ,  H03F3/68 ,  H03F1/56

Abstract: An advantageously fast and asynchronous interface is disclosed for the tuning of an RF frontend. The interface transmits a tuning word to the RF frontend that controls a tuning of the RF frontend responsive to a channel index.

公开(公告)号：US09547324B2

公开(公告)日：2017-01-17

申请号：US14244321

申请日：2014-04-03

Applicant: QUALCOMM Incorporated

Inventor： Mohammad Bagher Vahid Far ,  Abbas Komijani ,  Chan Hong Park

IPC: G05F3/26 ,  G05F3/02

CPC classification number: G05F3/02 ,  G05F3/262

Abstract: Certain aspects of the present disclosure provide voltage regulating circuits which are power efficient, low noise, and substantially insensitive to changes in process technology, power supply voltage, and temperature. Such circuits may be used to provide the regulated voltage for a voltage-controlled oscillator (VCO), for example, as found in a radio frequency front end (RFFE). One example voltage regulating circuit generally includes a current source configured to supply or sink a reference current and a current mirror having a bias branch and a main branch, wherein the bias branch is connected with the current source, wherein the main branch includes a source follower to provide the regulated voltage, and wherein the reference current is available at a node for the regulated voltage.

Abstract translation: 本公开的某些方面提供了功率有效，低噪声并且对工艺技术，电源电压和温度变化基本上不敏感的电压调节电路。 可以使用这样的电路来为例如在射频前端（RFFE）中找到的压控振荡器（VCO）提供调节电压。 一个示例性电压调节电路通常包括被配置为提供或吸收参考电流的电流源和具有偏压支路和主支路的电流镜，其中偏压支路与电流源连接，其中主支路包括源极跟随器 以提供调节电压，并且其中参考电流在用于调节电压的节点处可用。

公开(公告)号：US11967983B2

公开(公告)日：2024-04-23

申请号：US17934513

申请日：2022-09-22

Applicant: QUALCOMM Incorporated

Inventor： Yi Zeng ,  Cheng-Han Wang ,  Emanuele Lopelli ,  Chan Hong Park ,  Liang Zhao ,  Le Nguyen Luong ,  Koorosh Akhavan

IPC: H04B1/717 ,  H03F3/24

CPC classification number: H04B1/7174 ,  H03F3/245 ,  H03F2200/09 ,  H03F2200/451

Abstract: Aspects described herein include devices and methods for smart ultra wideband transmissions. In one aspect, an apparatus includes pulse generation circuitry configured to output a plurality of transmission (TX) pulse samples at a selected signal sample rate, where each pulse sample of the plurality of TX pulse samples comprises a value associated with a pulse amplitude at a corresponding sample time The apparatus includes a plurality of power amplifier (PA) cells, with each PA cell of the plurality of PA cells comprising a corresponding current source and associated gates, and where the associated gates of a PA cell are selectable to configure an on state and an off state. Logic circuitry of the apparatus is configured to set the on state or the off state for each PA cell.