专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明授权

US08908575B2 Methods and systems for calibrating a frequency-division duplexing transceiver 有权
标题翻译：用于校准频分双工收发器的方法和系统
公开(公告)号：US08908575B2
公开(公告)日：2014-12-09
申请号：US13747339
申请日：2013-01-22
申请人： QUALCOMM Incorporated
发明人： Masoud Zargari , Shahram Abdollahi-Alibeik
IPC分类号： H04L5/14 , H04B1/50 , H04B17/00
CPC分类号： H04L5/14 , H04B1/50 , H04B17/11 , H04B17/14 , H04B17/21 , H04L27/368
摘要： A frequency-division duplexing (FDD) transceiver includes a first mixer to up-convert a transmit signal and a first switch, coupled to the first mixer, to selectively provide a transmit local oscillator signal or a receive local oscillator signal to the first mixer. The transmit local oscillator signal has a first frequency and the receive local oscillator signal has a second frequency distinct from the first frequency. The FDD transceiver also includes a second mixer to down-convert a receive signal and a second switch, coupled to the second mixer, to selectively provide the transmit local oscillator signal or the receive local oscillator signal to the second mixer.
摘要翻译：频分双工（FDD）收发器包括耦合到第一混频器的发送信号上变频的第一混频器和第一开关，以选择性地向第一混频器提供发送本地振荡器信号或接收本地振荡器信号。发送本地振荡器信号具有第一频率，并且接收本地振荡器信号具有与第一频率不同的第二频率。 FDD收发器还包括第二混频器以对接收信号进行下变频和耦合到第二混频器的第二开关，以选择性地向第二混频器提供发送本地振荡器信号或接收本地振荡器信号。

12. 发明授权

US09781673B2 Adaptive control of RF low power modes in a multi-rate wireless system using device mode 有权
公开(公告)号：US09781673B2
公开(公告)日：2017-10-03
申请号：US14287670
申请日：2014-05-27
申请人： QUALCOMM Incorporated
发明人： Sandip Homchaudhuri , Paul Husted , MeeLan Lee , Srenik Mehta , Kai Shi , Shahram Abdollahi-Alibeik , Zhanfeng Jia , Soraya Kasnavi , Ning Zhang , David Kuochieh Su , Subramania Sharma Thandaveswaran , Kenneth Gainey , Ian David O'Donnell
IPC分类号： G06F1/32 , H04W52/02
CPC分类号： H04W52/0235 , G06F1/3206 , G06F1/3234 , H04W52/0229 , Y02D70/1262 , Y02D70/142 , Y02D70/22
摘要： Methods, systems, and devices are described for power conservation in a wireless communications system. In embodiments, power conservation may be achieved by adaptively controlling power modes of a wireless communication device, and implementing lower power modes with various modes of the device. According to one aspect, the mode of the device may be a beacon monitoring mode or a delivery traffic indication message (DTIM) mode. In such a mode, the device may receive a portion of a beacon in a first power mode. The device may transition to a second, different (e.g., higher) power mode using information contained in the received portion of the beacon as guidance.

13. 发明授权

US09401801B1 Multi-chip TX beamforming for per-packet switching with reduced LO leakage 有权
标题翻译：用于每分组交换的多芯片TX波束成形，减少LO泄漏
公开(公告)号：US09401801B1
公开(公告)日：2016-07-26
申请号：US14863057
申请日：2015-09-23
申请人： QUALCOMM Incorporated
发明人： Hyunsik Park , Lalitkumar Nathawad , Shahram Abdollahi-Alibeik
IPC分类号： H04B1/40 , H04L7/04 , H04L7/00
CPC分类号： H04B1/40 , H04B15/06
摘要： 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.
摘要翻译：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。

14. 发明授权

US09077445B2 Temperature compensated RF peak detector 有权
标题翻译：温度补偿RF峰值检测器
公开(公告)号：US09077445B2
公开(公告)日：2015-07-07
申请号：US13939076
申请日：2013-07-10
申请人： QUALCOMM Incorporated
发明人： Yashar Rajavi , Shahram Abdollahi-Alibeik
IPC分类号： H04B1/38 , H04B17/00 , H04B17/10 , H04B17/11 , H04B17/16 , H04B17/318 , H04B17/345 , G01R21/01
CPC分类号： H04B17/318 , G01R21/01 , H04B17/104 , H04B17/11 , H04B17/16 , H04B17/345
摘要： A temperature compensated RF peak detector is disclosed. In an exemplary embodiment, an apparatus includes a first RF peak detector configured to generate a reference signal, a temperature compensated threshold generator configured to generate a temperature compensated detection threshold based on the reference signal, and a comparator configured to generate a peak detection output based on the temperature compensated detection threshold.
摘要翻译：公开了一种温度补偿RF峰值检测器。在示例性实施例中，一种装置包括被配置为产生参考信号的第一RF峰值检测器，被配置为基于参考信号产生温度补偿检测阈值的温度补偿阈值发生器，以及配置成基于参考信号产生基于峰值检测输出的比较器对温度补偿检测阈值。

15. 发明授权

US08736329B1 Systems and methods for providing duty cycle correction 有权
标题翻译：提供占空比校正的系统和方法
公开(公告)号：US08736329B1
公开(公告)日：2014-05-27
申请号：US13760896
申请日：2013-02-06
申请人： QUALCOMM Incorporated
发明人： Yashar Rajavi , Shahram Abdollahi-Alibeik , Hakan Dogan
IPC分类号： H03K3/017
CPC分类号： G06F1/04 , H03K5/1565
摘要： Systems and methods are disclosed including a duty cycle module having two timer circuits to measure pulse widths of a clock signal. Two comparators are used to generate control signals depending upon comparisons of the pulse width measurements. In response to the control signals, either the clock signal or an inverted clock signal may be programmably delayed such that combination of the clock signal and the inverted clock signal results in a corrected clock signal. Systems and methods are also disclosed for verifying operation of a duty cycle module.
摘要翻译：公开了包括具有两个定时器电路以测量时钟信号的脉冲宽度的占空比模块的系统和方法。两个比较器用于根据脉冲宽度测量的比较来产生控制信号。响应于控制信号，时钟信号或反相时钟信号可以可编程地延迟，使得时钟信号和反相时钟信号的组合导致校正的时钟信号。还公开了用于验证占空比模块的操作的系统和方法。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式