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51.发明授权Methods for implementing a dynamic frequency selection (DFS) and a temporary channel selection feature for WLAN devices 有权用于实现WLAN设备的动态频率选择（DFS）和临时信道选择功能的方法公开(公告)号：US06870815B2
公开(公告)日：2005-03-22
申请号：US10730883
申请日：2003-12-08
IPC分类号： H04L1/22 , H04L5/06 , H04L12/28 , H04L12/56 , H04L29/06 , H04W16/10 , H04W16/14 , H04W24/04 , H04W72/08 , H04W84/12 , H04W99/00 , H04J3/16
CPC分类号： H04W16/14 , G01S7/021 , H04L1/22 , H04L5/06 , H04L63/08 , H04L63/162 , H04W12/06 , H04W16/10 , H04W24/00 , H04W24/04 , H04W36/06 , H04W72/02 , H04W72/08 , H04W84/12
摘要： Various regulatory domains promulgate standards to define how wireless devices should operate in certain frequency bands. The 5 GHz spectrum is of particular importance to certain regulatory domains because of radar systems also operating in this spectrum. To avoid interference with such radar systems, wireless devices operating in this spectrum should be able to detect radar and quickly vacate any channels currently used by the radar systems. In a channel switching technique, if the new channel is radar-exempt, then normal operation commences on the new channel. If the new channel is non-radar-exempt, then normal operation commences on a temporary radar-exempt channel and an aggregate background scan can be performed on the new channel. If no radars are detected using the aggregate background scan, then operation is switched from the temporary radar-exempt channel to the new channel. This channel switching technique minimizes disruption to users during a radar event.
摘要翻译： 各种监管领域公布了无线设备如何在某些频段中运行的标准。 5 GHz频谱对某些监管领域尤其重要，因为雷达系统也在这一频谱范围内运行。 为了避免对这种雷达系统的干扰，在该频谱中工作的无线设备应能够检测雷达并迅速腾出雷达系统当前使用的任何通道。 在频道切换技术中，如果新频道是免雷达的，则在新频道上开始正常的操作。 如果新的频道是无雷达的，那么在临时的无雷达信道上开始正常的操作，并且可以在新的频道上进行综合的后台扫描。 如果没有使用总体背景扫描检测到雷达，则将操作从临时雷达免除通道切换到新通道。 这种信道切换技术在雷达事件期间最大限度地减少了用户的干扰。
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公开(公告)号：US5978206A
公开(公告)日：1999-11-02
申请号：US940847
申请日：1997-09-30
IPC分类号： H01G4/33 , H01L21/02 , H01L21/822 , H01L23/522 , H01L27/04 , H01L27/08 , H01L29/92 , H01G4/005 , H01G4/228
CPC分类号： H01L27/0805 , H01L23/5223 , H01L28/82 , H01L2924/0002
摘要： A capacitor that is adapted for construction over a substrate in the metal interconnect layers provided by conventional integrated circuit processes. The capacitor includes a first conducting layer separated from the substrate by a first dielectric layer and a second conducting layer separated from the first conduction layer by a second dielectric layer. The second conducting layer is divided into a plurality of electrically isolated conductors in an ordered array. Every other one of the conductors is connected to a first terminal, and the remaining conductors are connected to a second terminal. The first conducting layer includes at least one conductor which is connected to the first terminal. In one embodiment of the invention, the first conducting layer also includes a plurality of electrically isolated conductors in an ordered array, every other one of the conductors being connected to the first terminal and the remaining conductors being connected the second terminal.
摘要翻译： 适用于通过常规集成电路工艺提供的金属互连层中的衬底上的结构的电容器。 电容器包括通过第一电介质层与衬底分离的第一导电层和通过第二电介质层与第一导电层分离的第二导电层。 第二导电层被分成多个以有序阵列的电绝缘导体。 导体中的每一根连接到第一端子，其余的导体连接到第二端子。 第一导电层包括连接到第一端子的至少一个导体。 在本发明的一个实施例中，第一导电层还包括有序阵列中的多个电绝缘导体，每个导体中的每一个连接到第一端子，其余的导体与第二端子连接。
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公开(公告)号：US5138287A
公开(公告)日：1992-08-11
申请号：US522287
申请日：1990-05-11
CPC分类号： H01P5/12
摘要： A choke for reducing common mode signals in high frequency circuits. A microstrip transmission line includes a pair of conductors spaced above a ground plane conductor. In input and output regions the conductors are spaced relatively far apart from each other such that each conductor presents a characteristic impedance that is similar for common mode and for differential mode signals. Between the input and output regions the conductors are located much closes together such that they present different characteristic impedances to common mode and to differential mode signals so as to reflect the common mode signal but not the differential mode signal. In another version a hole in the ground plane beneath the conductors is partially occupied by a conductive island that is coupled to the ground plane through a resistance to absorb the common mode signal rather than reflecting it. Other versions are realized in a pair of parallel coaxial cables and in a coplanar transmission line.
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54.发明授权System and method for providing antenna diversity in multiple sub-carrier communication systems 有权用于在多个子载波通信系统中提供天线分集的系统和方法公开(公告)号：US09136937B1
公开(公告)日：2015-09-15
申请号：US12706141
申请日：2010-02-16
CPC分类号： H04B7/18545 , H04B7/01 , H04B7/0602 , H04B7/0802 , H04B7/0805 , H04B7/0811 , H04B7/1855
摘要： A system and method to provide antenna diversity by switching between antenna feeds to optimize signal quality. Antenna conditions are determined during an OFDM guard interval to minimize disruption of symbol transmission. When the signal quality assessment determines that an improved signal is available on an alternative antenna, an antenna change is performed to switch to the alternative antenna, also during a GI, again minimizing disruption in information transmission. Preferably, the process is continually applied, so that antenna conditions are monitored for changing conditions and the antenna experiencing the best signal is selected.
摘要翻译： 通过在天线馈线之间切换来提供天线分集以优化信号质量的系统和方法。 在OFDM保护间隔期间确定天线条件以最小化符号传输的中断。 当信号质量评估确定改进的信号在替代天线上可用时，执行天线改变以在GI期间切换到替代天线，同时最小化信息传输的中断。 优选地，该过程被连续地应用，使得监视天线条件以改变条件，并且选择经历最佳信号的天线。
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55.发明授权公开(公告)号：US08675651B2
公开(公告)日：2014-03-18
申请号：US13008570
申请日：2011-01-18
CPC分类号： H04B3/54 , H04B2203/5425 , H04L69/18
摘要： A powerline network may comprise powerline communication (PLC) devices of a first class of PLC devices that are incompatible with PLC devices of a second class of PLC devices. This can result in interference between communications of the first and the second classes of PLC devices. A dual mode PLC device that is compatible with the first and the second classes of PLC devices can be implemented for coexistence with both classes of PLC devices. The dual mode PLC device can determine whether the powerline network comprises a combination of PLC devices of the first and the second classes of PLC devices. One of a plurality of packet headers that is compatible with both the classes of PLC devices can be selected for transmission in response to determining that the powerline network comprises a combination of PLC devices of the first and the second classes of PLC devices.
摘要翻译： 电力线网络可以包括与第二类PLC设备的PLC设备不兼容的第一类PLC设备的电力线通信（PLC）设备。 这可能导致第一类和第二类PLC设备的通信之间的干扰。 可以实现与PLC设备的第一类和第二类兼容的双模式PLC设备，用于与两类PLC设备共存。 双模式PLC设备可以确定电力线网络是否包括第一类和第二类PLC设备的PLC设备的组合。 响应于确定电力线网络包括第一类和第二类PLC设备的PLC设备的组合，可以选择与两个类型的PLC设备兼容的多个分组报头中的一个。
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56.发明授权Method and system for optimizing gain changes by identifying modulation type and rate 有权通过识别调制类型和速率来优化增益变化的方法和系统公开(公告)号：US08498368B1
公开(公告)日：2013-07-30
申请号：US10367049
申请日：2003-02-14
IPC分类号： H04L27/08
CPC分类号： H03G3/3052 , H03G3/3073 , H03G3/3078 , H04L1/0003 , H04L1/0046 , H04L1/0054 , H04L23/00 , H04L27/0012 , H04L27/2605 , H04L27/2647
摘要： In some wireless local area networks (WLANs), signals of different modulation types and rates can be received. To operate optimally, the gain of an amplifier in a receiver can be set based on a specific modulation type and rate. For example, the gain of a receive path amplifier can be changed based on one or more unique identifying characteristics in a received data packet. Once the unique identifying characteristics are located, they can be analyzed to determine which modulation type and rate are represented. The appropriate gain of the amplifier can be set based on the modulation type and rate. Advantageously, subsequent data symbols can be amplified with the set gain, thereby ensuring that the receiver optimally receives those data symbols.
摘要翻译： 在一些无线局域网（WLAN）中，可以接收不同调制类型和速率的信号。 为了最佳地操作，可以基于特定的调制类型和速率来设置接收机中的放大器的增益。 例如，接收路径放大器的增益可以基于接收的数据分组中的一个或多个唯一的识别特征来改变。 一旦找到了唯一的识别特征，就可以对它们进行分析，以确定哪种调制类型和速率被表示。 可以根据调制类型和速率设置放大器的适当增益。 有利地，随后的数据符号可以用设定的增益进行放大，从而确保接收机最佳地接收那些数据符号。
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公开(公告)号：US08451918B1
公开(公告)日：2013-05-28
申请号：US12272629
申请日：2008-11-17
IPC分类号： H04K1/10
CPC分类号： H04K3/228
摘要： A spur detection and spur cancellation apparatus in a multiple sub-carrier digital communication receiver includes a spur detection block that estimates, using one or more Fourier transforms, a frequency location of a narrowband interference spur in a received digital signal that includes a plurality of sub-carriers, and a spur cancellation block that attenuates the estimated narrowband interference spur. The spur detection block may use a fast Fourier transform (FFT) and/or a discrete Fourier transform (DFT) to locate a frequency and to measure a discrete power spectra of the narrowband interference spur. A channel state information block in the receiver may adjust a channel state information metric based on the located frequency and/or the measured discrete power spectra of the narrowband interference spur.
摘要翻译： 多子载波数字通信接收机中的支线检测和杂散消除装置包括一个支线检测块，其使用一个或多个傅里叶变换来估计接收到的数字信号中的窄带干扰杂波的频率位置，所述数字信号包括多个子载波 载波，以及减弱估计的窄带干扰刺激的支线消除块。 支线检测块可以使用快速傅里叶变换（FFT）和/或离散傅里叶变换（DFT）来定位频率并测量窄带干扰刺激的离散功率谱。 接收机中的信道状态信息块可以基于所定义的频率和/或窄带干扰支线的测量离散功率谱来调整信道状态信息度量。
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公开(公告)号：US20130090057A1
公开(公告)日：2013-04-11
申请号：US13269063
申请日：2011-10-07
CPC分类号： H04W12/06 , H01Q1/2291 , H04W12/08 , H04W88/08
摘要： The present application describes a system and method for validating a detachable antenna which may include, coupling a detachable antenna to a wireless device, providing an antenna identification code of the detachable antenna to the wireless device, determining if the antenna identification code of the detachable antenna is a valid antenna identification code for the wireless device and enabling operation of the wireless device if the antenna identification code of the detachable antenna is a valid antenna identification code for the wireless device. The operation of the wireless device may additionally be disabled if it is subsequently determined that the detachable antenna connected to the wireless device is no longer a valid antenna or if it is determined that the detachable antenna has been previously used by another wireless device.
摘要翻译： 本申请描述了一种用于验证可拆卸天线的系统和方法，其可以包括将可拆卸天线耦合到无线设备，向无线设备提供可拆卸天线的天线识别码，确定可拆卸天线的天线识别码 是用于无线设备的有效天线识别码，并且如果可拆卸天线的天线识别码是用于无线设备的有效天线识别码，则能够对无线设备进行操作。 如果随后确定连接到无线设备的可拆卸天线不再是有效天线，或者如果确定可拆卸天线先前已被另一无线设备使用，则可以另外禁用无线设备的操作。
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59.发明授权Method and apparatus for selective disregard of Co-channel transmissions on a medium 有权用于选择性地忽视介质上的同频道传输的方法和装置公开(公告)号：US08391374B2
公开(公告)日：2013-03-05
申请号：US12402341
申请日：2009-03-11
IPC分类号： H04B14/06
CPC分类号： H04W24/00 , H03G3/3068 , H04B1/1027 , H04B17/309 , H04W16/14 , H04W52/0232 , H04W52/0245 , Y02D70/142 , Y02D70/20 , Y02D70/40
摘要： A method and apparatus to selectively disregard co-channel transmissions on a medium uses an automatic gain control/clear channel assessment (AGC/CCA) circuit to gather signal power information, which is used to establish receiver sensitivity thresholds. Raw and cyclical power measurements of a received signal are processed by the AGC/CCA circuit to determine whether a current received signal process should be halted, and a new signal acquisition sequence begun.
摘要翻译： 选择性地忽略介质上的同频道传输的方法和装置使用自动增益控制/清除信道评估（AGC / CCA）电路来收集用于建立接收机灵敏度阈值的信号功率信息。 接收信号的原始和周期功率测量由AGC / CCA电路处理，以确定是否应该停止当前的接收信号处理，并且开始新的信号采集序列。
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公开(公告)号：US08260222B2
公开(公告)日：2012-09-04
申请号：US13419375
申请日：2012-03-13
CPC分类号： H03C5/00 , H03C1/62 , H03F3/24 , H03F2200/324 , H04B2001/0408
摘要： A polar transmitter includes a phase monitoring unit for monitoring input modulating data. When a phase transition exceeds a phase transition threshold, the phase monitor unit can signal an amplitude negation unit to invert the amplitude data coupled to the polar amplifier. The phase monitoring unit can also add an offset to the phase data that is provided to a frequency synthesizer. In another embodiment, when the phase transition threshold is exceeded, the phase monitoring unit can trigger inverting differential frequency data coupled to the polar amplifier. In one embodiment, the phase offset and the amplitude negation are applied until a second phase transition value exceeding the phase transition threshold is detected. If such an event is detected, then the input amplitude data is no longer inverted and the phase offset value is no longer added to the modulating data.
摘要翻译： 极性发射器包括用于监控输入调制数据的相位监控单元。 当相变超过相变阈值时，相位监控单元可以向振幅否定单元发信号，以反转与极性放大器耦合的振幅数据。 相位监视单元还可以向提供给频率合成器的相位数据添加偏移。 在另一个实施例中，当超过相变阈值时，相位监视单元可以触发耦合到极性放大器的反相差分频率数据。 在一个实施例中，施加相位偏移和振幅否定，直到检测到超过相变阈值的第二相位转变值。 如果检测到这样的事件，则输入幅度数据不再被反转，并且不再将相位偏移值加到调制数据中。
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