公开(公告)号：US20210067163A1

公开(公告)日：2021-03-04

申请号：US16958034

申请日：2018-03-30

Applicant: Intel IP Corporation

Inventor： Niranjan Karandikar ,  Mohammed Alam ,  Gregory Chance ,  Armando Cova ,  Michael Milyard ,  John J. Parkes, JR. ,  Ashoke Ravi ,  Daniel Schwartz ,  Dong-Jun Yang

IPC: H03L7/085 ,  H04B1/12 ,  H04L25/03 ,  H04B1/18 ,  H04L25/08

Abstract: A wireless communication device can include an antenna configured to sense a radio frequency (RF) signal. The wireless communication device can include signal estimation circuitry configured to generate estimates of amplitude and frequency for unmodulated spurs within the RF signal. The wireless communication device can further include multi-tone generator circuitry coupled to the signal estimation circuitry and configured to generate a composite spur cancellation signal based on the estimates of amplitude and frequency for unmodulated spurs within the RF signal. The wireless communication device can further include adder circuitry configured to subtract the spur cancellation signal from the RF signal to generate a spur cancelled signal.

公开(公告)号：US20200321994A1

公开(公告)日：2020-10-08

申请号：US16956738

申请日：2018-03-28

Applicant: Intel IP Corporation

Inventor： Mohammed Alam ,  Yiwen Chen ,  Ricardo Fernandez ,  John J. Parkes, JR. ,  James Riches ,  Werner Schelmbauer ,  Daniel Schwartz ,  Michael David Vicker ,  Dong-Jun Yang

IPC: H04B1/26 ,  H04B1/18 ,  H04B7/0413 ,  H04B7/08 ,  H04L25/02

Abstract: A wireless communication device can include an antenna array configured to receive a plurality of radio frequency (RF) signals, RF circuitry, and digital baseband receive circuitry. The RF circuitry is configured to process the plurality of RF signals received via the antenna array to generate a single RF signal. The digital baseband receive circuitry is coupled to the RF circuitry and is configured to generate a downconverted signal based on the single RF signal, amplify the downconverted signal to generate an amplified downconverted signal, and convert the amplified downconverted signal to generate a digital output signal for processing by a wireless modem. The digital baseband receive circuitry further includes at least a first filtering system configured to filter the downconverted signal prior to amplification.

公开(公告)号：US09735894B2

公开(公告)日：2017-08-15

申请号：US14665818

申请日：2015-03-23

Applicant: Intel IP Corporation

Inventor： Mohammed Alam ,  Patrick Rakers

IPC: H04B1/26 ,  H04B15/02 ,  H03D7/14

CPC classification number: H04B15/02 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1466 ,  H03D2200/0088

Abstract: A user equipment (UE), receiver and method are generally described herein. The UE may include a mixer, a local oscillator (LO) and an analog-to-digital converter (ADC). The mixer may downconvert a differential radio frequency (RF) signal using LO signals and provide downconverted signals to the ADC. The mixer may provide decoupled lowpass filtering. The lowpass filter capacitors may retain charge when discharging is completed. For each differential signal, the mixer may have an input pullup resistor, first switches receiving the signal and driven by different LO signals, second switches receiving signals from the first switches such that connected pairs of switches may have driven by different LO signals, an ADC input resistor, charging capacitors each connected between first switches driven by the same LO signal, and grounding capacitors each connected to second switches associated with different RF signal outputs and driven by different LO signals.

公开(公告)号：US20160285567A1

公开(公告)日：2016-09-29

申请号：US14665818

申请日：2015-03-23

Applicant: Intel IP Corporation

Inventor： Mohammed Alam ,  Patrick Rakers

IPC: H04B15/02 ,  H03D7/14

CPC classification number: H04B15/02 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1466 ,  H03D2200/0088

Abstract: A user equipment (UE), receiver and method are generally described herein. The UE may include a mixer, a local oscillator (LO) and an analog-to-digital converter (ADC). The mixer may downconvert a differential radio frequency (RF) signal using LO signals and provide downconverted signals to the ADC. The mixer may provide decoupled lowpass filtering. The lowpass filter capacitors may retain charge when discharging is completed. For each differential signal, the mixer may have an input pullup resistor, first switches receiving the signal and driven by different LO signals, second switches receiving signals from the first switches such that connected pairs of switches may have driven by different LO signals, an ADC input resistor, charging capacitors each connected between first switches driven by the same LO signal, and grounding capacitors each connected to second switches associated with different RF signal outputs and driven by different LO signals.

Abstract translation: 本文一般地描述用户设备（UE），接收机和方法。 UE可以包括混频器，本地振荡器（LO）和模数转换器（ADC）。 混频器可以使用LO信号对差分射频（RF）信号进行下变频，并向ADC提供下变频信号。 混频器可以提供解耦的低通滤波。 当放电完成时，低通滤波电容可能会保持充电。 对于每个差分信号，混频器可以具有输入上拉电阻，首先接收信号并由不同的LO信号驱动，第二开关从第一开关接收信号，使得连接的开关对可以由不同的LO信号驱动，ADC 输入电阻器，每个连接在由相同LO信号驱动的第一开关之间的充电电容器以及各自连接到与不同RF信号输出相关联的第二开关并由不同LO信号驱动的接地电容器。