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1. 发明授权

US08433275B2 System and method for DC correction in wireless receivers 失效
标题翻译：无线接收机直流校正系统及方法
公开(公告)号：US08433275B2
公开(公告)日：2013-04-30
申请号：US11549256
申请日：2006-10-13
申请人： William M. Hurley , Lup Meng Loh , Yinong Ding , WeonKi Yoon , Michael L. Brobston , John Alexander Interrante , Jordan Charles Mott
发明人： William M. Hurley , Lup Meng Loh , Yinong Ding , WeonKi Yoon , Michael L. Brobston , John Alexander Interrante , Jordan Charles Mott
IPC分类号： H04B1/10
CPC分类号： H04B1/30
摘要： A system and method for minimizing a DC component of a received signal are disclosed. As one example, a system for minimizing a DC component of a signal in a wireless receiver is disclosed, which includes a programmable filter operable to filter the signal with at least one of a low cutoff frequency and a high cutoff frequency, and a transition unit coupled to the programmable filter, the transition unit operable to transition the programmable filter between the high cutoff frequency and the low cutoff frequency.
摘要翻译：公开了一种用于最小化接收信号的DC分量的系统和方法。作为一个示例，公开了一种用于使无线接收机中的信号的DC分量最小化的系统，其包括可操作以用低截止频率和高截止频率中的至少一个来对信号进行滤波的可编程滤波器，以及转换单元耦合到可编程滤波器，该转换单元可操作以在高截止频率和低截止频率之间转换可编程滤波器。

2. 发明申请

US20080090541A1 SYSTEM AND METHOD FOR DC CORRECTION IN WIRELESS RECEIVERS 失效
标题翻译：无线接收机直流校正系统与方法
公开(公告)号：US20080090541A1
公开(公告)日：2008-04-17
申请号：US11549256
申请日：2006-10-13
申请人： William M. Hurley , Lup Meng Loh , Yinong Ding , WeonKi Yoon , Michael L. Brobston , John Alexander Interrante , Jordan Charles Mott
发明人： William M. Hurley , Lup Meng Loh , Yinong Ding , WeonKi Yoon , Michael L. Brobston , John Alexander Interrante , Jordan Charles Mott
IPC分类号： H04B1/10
CPC分类号： H04B1/30
摘要： A system and method for minimizing a DC component of a received signal are disclosed. As one example, a system for minimizing a DC component of a signal in a wireless receiver is disclosed, which includes a programmable filter operable to filter the signal with at least one of a low cutoff frequency and a high cutoff frequency, and a transition unit coupled to the programmable filter, the transition unit operable to transition the programmable filter between the high cutoff frequency and the low cutoff frequency.
摘要翻译：公开了一种用于最小化接收信号的DC分量的系统和方法。作为一个示例，公开了一种用于使无线接收机中的信号的DC分量最小化的系统，其包括可操作以用低截止频率和高截止频率中的至少一个来对信号进行滤波的可编程滤波器，以及转换单元耦合到可编程滤波器，该转换单元可操作以在高截止频率和低截止频率之间转换可编程滤波器。

3. 发明授权

US07391256B2 System and method for DC correction in wireless receivers 失效
标题翻译：无线接收机直流校正系统及方法
公开(公告)号：US07391256B2
公开(公告)日：2008-06-24
申请号：US11522752
申请日：2006-09-18
申请人： William Milton Hurley , Lup Meng Loh , Yinong Ding , Michael L. Brobston , John Alexander Interrante
发明人： William Milton Hurley , Lup Meng Loh , Yinong Ding , Michael L. Brobston , John Alexander Interrante
IPC分类号： H03F1/02
CPC分类号： H03F3/191
摘要： The present disclosure relates generally to systems and methods for direct current (DC) correction in wireless devices. In one example, a method includes setting a cutoff frequency of a filter at a first frequency, where a signal entering the filter is attenuated based on the cutoff frequency. If a qualified change is detected in a DC component of the signal, the cutoff frequency is set at a second frequency that attenuates more of the signal than the first frequency for a defined time period. The cutoff frequency may then be set to the first frequency after the defined time period.
摘要翻译：本公开一般涉及无线设备中直流（DC）校正的系统和方法。在一个示例中，一种方法包括：以第一频率设置滤波器的截止频率，其中进入滤波器的信号基于截止频率衰减。如果在信号的直流分量中检测到合格的变化，则将截止频率设定在第二频率，该频率在规定的时间段内衰减比第一频率更多的信号。然后可以在限定的时间段之后将截止频率设置为第一频率。

4. 发明申请

US20080079498A1 System and method for DC correction in wireless receivers 失效
公开(公告)号：US20080079498A1
公开(公告)日：2008-04-03
申请号：US11522752
申请日：2006-09-18
申请人： William Milton Hurley , Lup Meng Loh , Yinong Ding , Michael L. Brobston , John Alexander Interrante
发明人： William Milton Hurley , Lup Meng Loh , Yinong Ding , Michael L. Brobston , John Alexander Interrante
IPC分类号： H03F3/191
CPC分类号： H03F3/191
摘要： The present disclosure relates generally to systems and methods for direct current (DC) correction in wireless devices. In one example, a method includes setting a cutoff frequency of a filter at a first frequency, where a signal entering the filter is attenuated based on the cutoff frequency. If a qualified change is detected in a DC component of the signal, the cutoff frequency is set at a second frequency that attenuates more of the signal than the first frequency for a defined time period. The cutoff frequency may then be set to the first frequency after the defined time period.

5. 发明授权

US08995569B2 Quadrature digital-IF transmitter without inter-stage SAW filter and devices using same 有权
标题翻译：具有阶跃式SAW滤波器的正交数字中频发射机和使用其的器件
公开(公告)号：US08995569B2
公开(公告)日：2015-03-31
申请号：US13341495
申请日：2011-12-30
申请人： Lup Meng Loh , Imtinan Elahi , Naveen Yanduru , Michael L. Brobston
发明人： Lup Meng Loh , Imtinan Elahi , Naveen Yanduru , Michael L. Brobston
IPC分类号： H04L25/49 , H04L25/03 , H04L27/20 , H04L27/00
CPC分类号： H04L25/03343 , H04L27/20 , H04L2027/0018
摘要： An RF transmitter comprises a digital-to-IF circuit block configured to receive a digital in-phase baseband signal and a digital quadrature baseband signal and to up-convert the digital in-phase and quadrature baseband signals to a digital in-phase IF signal and to a digital quadrature IF signal. The wireless RF transmitter further comprises an IF-to-RF circuit block configured to convert the digital in-phase and quadrature IF signals to analog signals and to up-convert the analog in-phase and quadrature IF signals to an RF output signal. The digital-to-IF circuit block comprises pre-compensation circuitry configured to reduce analog impairments associated with the IF-to-RF circuit block.
摘要翻译： RF发射机包括被配置为接收数字同相基带信号和数字正交基带信号的数/中频电路块，并且将数字同相和正交基带信号上变频到数字同相IF信号和数字正交IF信号。无线RF发射机还包括被配置为将数字同相和正交IF信号转换为模拟信号并将模拟同相和正交IF信号上变频为RF输出信号的IF至RF电路块。数字到中频电路块包括被配置为减少与IF到RF电路块相关联的模拟损伤的预补偿电路。

6. 发明申请

US20130170581A1 QUADRATURE DIGITAL-IF TRANSMITTER WITHOUT INTER-STAGE SAW FILTER AND DEVICES USING SAME 有权
标题翻译：不具有间隔SAW滤波器的数字数字数字发射器和使用相同的器件
公开(公告)号：US20130170581A1
公开(公告)日：2013-07-04
申请号：US13341495
申请日：2011-12-30
申请人： Lup Meng Loh , Imtinan Elahi , Naveen Yanduru , Michael L. Brobston
发明人： Lup Meng Loh , Imtinan Elahi , Naveen Yanduru , Michael L. Brobston
IPC分类号： H04L25/49 , H04L25/03
CPC分类号： H04L25/03343 , H04L27/20 , H04L2027/0018
摘要： An RF transmitter comprises a digital-to-IF circuit block configured to receive a digital in-phase baseband signal and a digital quadrature baseband signal and to up-convert the digital in-phase and quadrature baseband signals to a digital in-phase IF signal and to a digital quadrature IF signal. The wireless RF transmitter further comprises an IF-to-RF circuit block configured to convert the digital in-phase and quadrature IF signals to analog signals and to up-convert the analog in-phase and quadrature IF signals to an RF output signal. The digital-to-IF circuit block comprises pre-compensation circuitry configured to reduce analog impairments associated with the IF-to-RF circuit block.
摘要翻译： RF发射机包括被配置为接收数字同相基带信号和数字正交基带信号的数/中频电路块，并且将数字同相和正交基带信号上变频到数字同相IF信号和数字正交IF信号。无线RF发射机还包括被配置为将数字同相和正交IF信号转换为模拟信号并将模拟同相和正交IF信号上变频为RF输出信号的IF至RF电路块。数字到中频电路块包括被配置为减少与IF到RF电路块相关联的模拟损伤的预补偿电路。

7. 发明授权

US07466972B2 System and method for optimized receiver performance in a low intermediate frequency architecture for edge 失效
标题翻译：用于边缘低中频架构优化接收机性能的系统和方法
公开(公告)号：US07466972B2
公开(公告)日：2008-12-16
申请号：US11708850
申请日：2007-02-21
申请人： Michael L. Brobston , Lup Meng Loh
发明人： Michael L. Brobston , Lup Meng Loh
IPC分类号： H04B1/18
CPC分类号： H04B1/30
摘要： The present disclosure relates generally to systems and methods for optimized receiver performance in a low intermediate frequency (IF) architecture for EDGE (Enhanced Data rates for GSM Evolution). In one example, a method includes mixing a received analog signal with a local oscillator signal to create a mixed signal having an intermediate frequency between 101 kHz and 199 kHz. The mixed signal is compensated to minimize a direct current (DC) component introduced into the mixed signal by the local oscillator signal and an interferer image portion of the mixed signal is rejected. DC introduced into the mixed signal is minimized before final downconverting of the mixed signal, and DC remaining at the intermediate frequency after downconverting the mixed signal is minimized.
摘要翻译：本公开一般涉及用于EDGE（用于GSM演进的增强数据速率）的低中频（IF）架构中用于优化接收机性能的系统和方法。在一个示例中，一种方法包括将接收的模拟信号与本地振荡器信号进行混合，以产生具有101kHz至199kHz之间的中频的混合信号。补偿混合信号以使通过本地振荡器信号引入混合信号的直流（DC）分量最小化，并且混合信号的干扰源图像部分被拒绝。引入到混合信号中的DC在混合信号的最终下变频之前被最小化，并且在下变频混合信号之后剩余的中间频率的DC被最小化。

8. 发明授权

US07369873B2 Apparatus and method for remotely modifying reconfigurable hardware in a mobile station 失效
标题翻译：用于在移动台中远程修改可重配置硬件的装置和方法
公开(公告)号：US07369873B2
公开(公告)日：2008-05-06
申请号：US11055030
申请日：2005-02-10
申请人： Michael L. Brobston , Weon-Ki Yoon , William M. Hurley
发明人： Michael L. Brobston , Weon-Ki Yoon , William M. Hurley
IPC分类号： H04Q7/20 , H04Q7/32
CPC分类号： H04B1/0028 , H04W88/06
摘要： A multi-mode mobile station comprising 1) reconfigurable transceiver circuitry for communicating with wireless networks operating under different air interface standards; 2) a memory for storing at least a download configuration file and a home configuration file; and 3) a main controller for configuring the reconfigurable transceiver circuitry to operate according to a home network wireless standard using home configuration data retrieved from the home configuration file. If the main controller determines that a network operating according to the home network wireless standard cannot be found, the main controller is further capable of configuring the reconfigurable transceiver circuitry to operate according to a download channel wireless standard using download configuration data retrieved from the download configuration file. The main controller then establishes a download channel with a local roaming wireless network and downloads a roaming network configuration file from the roaming wireless network over the download channel.
摘要翻译：一种多模移动台，包括：1）可重配置收发器电路，用于与在不同空中接口标准下工作的无线网络进行通信; 2）用于至少存储下载配置文件和归属配置文件的存储器; 以及3）主控制器，用于根据从家庭配置文件检索的家庭配置数据，配置可重新配置的收发器电路以根据家庭网络无线标准进行操作。如果主控制器确定不能找到根据家庭网络无线标准操作的网络，则主控制器还能够使用从下载配置检索的下载配置数据，根据下载频道无线标准来配置可重新配置的收发器电路进行操作文件。然后，主控制器建立与本地漫游无线网络的下载频道，并通过下载频道从漫游无线网络下载漫游网络配置文件。

9. 发明授权

US08428650B2 Reconfigurable base station using mobile station RF ASIC 失效
标题翻译：可重配置基站采用移动台RF ASIC
公开(公告)号：US08428650B2
公开(公告)日：2013-04-23
申请号：US11078808
申请日：2005-03-11
申请人： Warren T. Pottenger , Michael L. Brobston , John A. Interrante , Lup M. Loh , William M. Hurley
发明人： Warren T. Pottenger , Michael L. Brobston , John A. Interrante , Lup M. Loh , William M. Hurley
IPC分类号： H04M3/00 , H04B1/38
CPC分类号： H04W88/08 , H04B1/0003 , H04B1/40
摘要： A reconfigurable RF transceiver for use in either a base station or a mobile station Of a wireless network. The reconfigurable RF transceiver comprises a first receive path that down-converts an incoming RF signal to analog and digital baseband signals. The first receive path in a first mode down-converts the incoming RF signal in a receive frequency band for the base station and in a second mode down-converts the incoming RF signal in a receive frequency band for the mobile station. The reconfigurable RF transceiver further comprises a transmit path for up-converting an outgoing baseband signal to an outgoing RF signal. The transmit path in the first mode up-converts the outgoing baseband signal in a transmit frequency band for the base station and in the second mode up-converts the outgoing baseband signal in a transmit frequency band for the mobile station.
摘要翻译：用于无线网络中的基站或移动台中的可重构RF收发器。可重构RF收发器包括将输入RF信号下变频为模拟和数字基带信号的第一接收路径。在第一模式中的第一接收路径对基站的接收频带中的输入RF信号进行下变频，并且在第二模式中，对移动台的接收频带中的输入RF信号进行降频转换。可重构RF收发器还包括用于将输出基带信号上变频到出射RF信号的发送路径。第一模式中的发送路径对基站的发送频带中的输出基带信号进行上变频，在第二模式中，对移动台的发送频带中的输出基带信号进行上变频。

10. 发明授权

US06304762B1 Point to multipoint communication system with subsectored upstream antennas 失效
标题翻译：具有次上行天线的点对多点通信系统
公开(公告)号：US06304762B1
公开(公告)日：2001-10-16
申请号：US08996258
申请日：1997-12-22
申请人： William K. Myers , Eugene A. Robinson , Hatcher E. Chalkley , Michael L. Brobston , Douglas B. Weiner
发明人： William K. Myers , Eugene A. Robinson , Hatcher E. Chalkley , Michael L. Brobston , Douglas B. Weiner
IPC分类号： H04B138
CPC分类号： H04W88/08 , H04W16/24 , H04W84/14
摘要： A point-to-multipoint communication system wherein the base station broadcasts the same frequency band signals over multiple sectors of given node. The base station includes a plurality of channel receivers (ch. 1-ch. n) for each sector and a plurality of antennas 36a and 36b selectively coupled to said channel receivers. The subsector antennas have these radiation centers offset from each other to present different coverage over the node.
摘要翻译：一种点对多点通信系统，其中基站在给定节点的多个扇区上广播相同的频带信号。基站包括用于每个扇区的多个信道接收机（ch.1-ch.n）和选择性地耦合到所述信道接收机的多个天线36a和36b。这些子天线具有这些辐射中心彼此偏移以呈现节点上的不同覆盖。

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