公开(公告)号：US09794091B1

公开(公告)日：2017-10-17

申请号：US15254663

申请日：2016-09-01

Applicant: QUALCOMM Incorporated

Inventor： Tevfik Yucek ,  Felix Bitterli ,  Shahram Abdollahi-Alibeik ,  Lalitkumar Nathawad ,  James Gardner ,  Christopher Pisz ,  Patrick Kelliher ,  Burcin Baytekin ,  Suresh Chandrasekaran ,  Mani Krishnan Venkatachari

IPC: H04L27/00 ,  H04B7/0413 ,  H04L12/933

CPC classification number: H04L27/0002 ,  G01S7/021 ,  H04B7/0413 ,  H04K3/226 ,  H04K3/822 ,  H04K2203/18 ,  H04L49/101

Abstract: A method and apparatus are disclosed for a wireless communication device capable of scanning for radar signals while detecting and/or receiving a wireless communication signal. The wireless communication device may include a plurality of local oscillator synthesizers to allow distinct frequency bands to be used for wireless communication signals and radar detection. In some embodiments, the wireless communication device may include a radar detection physical layer (PHY) circuit to detect the presence of radar signals within a received RF signal. The radar detection PHY may have limited functionality suitable primarily for radar signal analysis and not suitable for processing (decoding) communication signals.

公开(公告)号：US09210535B2

公开(公告)日：2015-12-08

申请号：US13645346

申请日：2012-10-04

Applicant: QUALCOMM Incorporated

Inventor： Alireza Kheirkhahi ,  Shahram Abdollahi-Alibeik ,  Lalitkumar Nathawad ,  Ke Gong ,  Ali Agah

IPC: H04W4/00 ,  H04B1/525 ,  H04J11/00

CPC classification number: H04W4/80 ,  H04B1/525 ,  H04J11/0023

Abstract: This disclosure describes techniques for providing active interference cancellation in a wireless communication system having a Bluetooth transmit chain and a WLAN receive chain. A signal sampled from the Bluetooth transmit chain is gain and phase adjusted to offset interference in the WLAN receive chain. A quadrature phase shifter may be used to generate quadrature components of the sampled signal that are selectively combined to achieve a desired phase adjustment. The phase shifter may be stabilized by a variable capacitor. These techniques may be extended to MIMO systems.

Abstract translation: 本公开描述了在具有蓝牙发射链和WLAN接收链的无线通信系统中提供主动干扰消除的技术。 从蓝牙发射链采样的信号是增益和相位调整以抵消WLAN接收链中的干扰。 正交移相器可以用于产生被选择性地组合以获得期望的相位调整的采样信号的正交分量。 移相器可以由可变电容器稳定。 这些技术可以扩展到MIMO系统。

公开(公告)号：US09548767B2

公开(公告)日：2017-01-17

申请号：US14532309

申请日：2014-11-04

Applicant: QUALCOMM Incorporated

Inventor： Abbas Komijani ,  Mohammad Bagher Vahid Far ,  Amirpouya Kavousian ,  Alireza Khalili ,  Yashar Rajavi ,  Lalitkumar Nathawad ,  Mohammad Mahdi Ghahramani

IPC: H04L27/06 ,  H03F3/191 ,  H04B1/00 ,  H04B1/16 ,  H04B5/00

CPC classification number: H04B1/0064 ,  H04B1/16 ,  H04B5/0031 ,  H04B5/0087 ,  H04B5/0093

Abstract: A multi-band amplifier may operate in a first frequency band and a second frequency band. The multi-band amplifier may include a first amplifier, a second amplifier, and a coupler. The coupler may couple a signal, such as a communication signal, to a selected amplifier. In some embodiments, the coupler may include one or more inductive elements to couple the signal to the first or the second amplifier. In some embodiments, the inductive elements may include a balun.

Abstract translation: 多频带放大器可以在第一频带和第二频带中操作。 多频带放大器可以包括第一放大器，第二放大器和耦合器。 耦合器可以将诸如通信信号的信号耦合到所选择的放大器。 在一些实施例中，耦合器可以包括一个或多个感应元件以将信号耦合到第一或第二放大器。 在一些实施例中，感应元件可包括平衡 - 不平衡转换器。

公开(公告)号：US09401801B1

公开(公告)日：2016-07-26

申请号：US14863057

申请日：2015-09-23

Applicant: QUALCOMM Incorporated

Inventor： Hyunsik Park ,  Lalitkumar Nathawad ,  Shahram Abdollahi-Alibeik

IPC: H04B1/40 ,  H04L7/04 ,  H04L7/00

CPC classification number: H04B1/40 ,  H04B15/06

Abstract: A wireless communications device that produces phase-synchronized local oscillator (LO) signals. The device includes a first transceiver chain to receive a first timing signal and a second transceiver chain to receive the first timing signal and a second timing signal. The first transceiver chain includes a first frequency divider to convert the first timing signal to a first LO signal. The second transceiver chain includes a multiplexer to select one of the timing signals based at least in part on a mode select signal. A second frequency divider in the second transceiver chain converts the selected timing signal to a second LO signal, and a phase alignment circuit aligns a phase of the second LO signal with a first alignment signal. The first alignment signal is activated, for a limited duration, in response to a change in state of the mode select signal.

Abstract translation: 一种产生相位同步的本地振荡器（LO）信号的无线通信设备。 所述设备包括用于接收第一定时信号的第一收发器链和用于接收第一定时信号的第二收发器链和第二定时信号。 第一收发器链包括第一分频器，用于将第一定时信号转换为第一LO信号。 第二收发器链包括至少部分地基于模式选择信号来选择定时信号之一的多路复用器。 第二收发器链中的第二分频器将所选定时信号转换为第二LO信号，并且相位对准电路使第二LO信号的相位与第一对准信号对准。 响应于模式选择信号的状态改变，第一对准信号在有限的持续时间内被激活。