公开(公告)号：WO2009124145A3

公开(公告)日：2010-01-07

申请号：PCT/US2009039204

申请日：2009-04-01

Applicant: ATHEROS COMM INC ,  CHEN SHUO-WEI ,  SU DAVID KUOCHIEH

Inventor： CHEN SHUO-WEI ,  SU DAVID KUOCHIEH

IPC: H03L7/06

CPC classification number: H03L7/0998 ,  H03K3/03 ,  H03K5/133 ,  H03K2005/00032 ,  H03K2005/00052 ,  H03L7/081 ,  H03L7/093 ,  H03L7/0991 ,  H03L7/0995 ,  H03L7/183 ,  H03L7/1974 ,  H03L2207/50

Abstract: A digital fractional PLL introduces an accumulated phase offset before the digital VCO using a digital accumulator to achieve the fractional part of the division ratio. To provide this phase offset, the digital accumulator can integrate a fractional component ?n. By forcing ?n to zero, the PLL becomes an integer-N PLL. A de-skew timing configuration can be used to remove any time mismatch between integer and fractional counters of the PLL. A digital PLL can merge the function of frequency generation (DVCO) and that of fractional frequency counting into the same circuit block by reusing various phases of the frequency output to generate a fractional frequency count. A digital integer PLL can include a single bit comparator, wherein the feedback loop of this PLL forces the phase difference between the reference clock signal and the feedback signal to approach zero. By changing the duty cycle of feedback signal, the frequency tracking behavior of the loop can be varied.

Abstract translation: 数字分数PLL在使用数字累加器的数字VCO之前引入累积的相位偏移，以实现分数比的分数部分。 为了提供这种相位偏移，数字累加器可以集成小数分量？n。 通过将？n置为零，PLL变为整数N PLL。 可以使用去偏移时序配置来消除PLL的整数和分数计数器之间的任何时间不匹配。 数字PLL可以通过重新使用频率输出的各个相位来将频率产生（DVCO）的功能和分数频率计数的功能合并到相同的电路块中，以产生分数频率计数。 数字整数PLL可以包括单比特比较器，其中该PLL的反馈环路迫使参考时钟信号和反馈信号之间的相位差接近零。 通过改变反馈信号的占空比，可以改变回路的频率跟踪行为。

公开(公告)号：WO2008112526A3

公开(公告)日：2008-11-13

申请号：PCT/US2008056165

申请日：2008-03-07

Applicant: ATHEROS COMM INC ,  ZHANG NING

Inventor： ZHANG NING

IPC: H04W16/14

CPC classification number: H04W16/14 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0228 ,  H04L27/2613 ,  H04L27/2675

Abstract: One method of estimating timing and frequency information of a payload transmitted through two or more frequency separated channels combines training fields from preambles from the two or more frequency separated channels to construct combined values that may be used to estimate the frequency and timing information. In one embodiment, the combined values may be determined by combining self-correlated training fields from the frequency separated channels. Another method of estimating the timing and frequency information selects the training fields from the preamble of one of the frequency separated channels based upon a signal quality metric. In another embodiment, the selection of the training fields based upon a signal quality metric may be biased to favor a particular channel.

Abstract translation: 估计通过两个或更多个频率分离的信道发送的有效载荷的定时和频率信息的一种方法组合来自两个或更多个频率分离的信道的前导的训练字段，以构建可用于估计频率和定时信息的组合值。 在一个实施例中，可以通过组合来自频率分离的信道的自相关训练字段来确定组合值。 估计定时和频率信息的另一方法基于信号质量度量从频率分离的信道之一的前导码中选择训练字段。 在另一个实施例中，基于信号质量度量的训练字段的选择可以偏向偏好特定的信道。

公开(公告)号：WO2005029749A3

公开(公告)日：2007-01-18

申请号：PCT/US2004030315

申请日：2004-09-15

Applicant: ATHEROS COMM INC ,  CHOI WON-JOON ,  GILBERT JEFFREY M ,  WANG YI-HSIU ,  ZHANG XIAORU

Inventor： CHOI WON-JOON ,  GILBERT JEFFREY M ,  WANG YI-HSIU ,  ZHANG XIAORU

IPC: H04K1/10 ,  H04L27/26

CPC classification number: H04L25/0232 ,  H04L1/0045 ,  H04L27/2647

Abstract: Spurs cause significant problems with signal detecting, amplifier gain adjustment, and signal decoding. Various techniques can be used to mitigate the effects of spurs on a received signal. Generally, these techniques work by either canceling or ignoring the spurs. For example, a pilot mask can be used to ignore pilot information in one or more sub-channels. A Viterbi mask can determine the weighting given to bits in a sub-channel based on spur and data rate information. Channel interpolation can compute a pseudo channel estimate for a sub-channel known to have a spur location can be computed by interpolating the channel estimates of adjacent good sub-channels. Filtering of the received signal using a low-pass filter, a growing box filter, or a low-pass filter with self-correlation can be used to cancel a spur.

Abstract translation: 马刺引起信号检测，放大器增益调整和信号解码的重大问题。 可以使用各种技术来减轻杂散对接收信号的影响。 一般来说，这些技术可以取消或忽略杂散。 例如，可以使用导频掩码来忽略一个或多个子信道中的导频信息。 维特比掩码可以基于分支和数据速率信息来确定子信道中的比特的加权。 可以通过内插相邻的良好子信道的信道估计来计算已知具有支路位置的子信道的信道内插可以计算伪信道估计。 使用低通滤波器，增长盒滤波器或具有自相关的低通滤波器对接收信号进行滤波可用于取消杂散。

公开(公告)号：WO2005036775A3

公开(公告)日：2005-08-11

申请号：PCT/US2004033081

申请日：2004-10-06

Applicant: ATHEROS COMM INC ,  CHOI WON-JOON ,  TEHRANI ARDAVAN M ,  GILBERT JEFFREY M ,  NG SAMUEL

Inventor： CHOI WON-JOON ,  TEHRANI ARDAVAN M ,  GILBERT JEFFREY M ,  NG SAMUEL

IPC: H04B7/06 ,  H04L25/02 ,  H04L27/26

CPC classification number: H04L27/2626 ,  H04B7/0617 ,  H04L25/0206 ,  H04L27/2608 ,  H04L27/2614

Abstract: The present invention provides an apparatus and method of multiple antenna transmitter beamforming of high data rate wideband packetized wireless communication signals, where each of the signals comprises N frequencies, where N is a positive integer. The apparatus, in an exemplary embodiment, includes (1) a transmit beamformer (220) that co-phases and weights the signals for each of the N frequencies across M antennas, thereby generating M co-phased and weighted frequency data and M Inverse Fast Fourier Transform units (IFFTs 230, 232) that convert the M co-phased and weighted frequency data into M digital outputs, and M transmit antennas (260, 262) transmitting the M co-phased and weighted signals, where M is an integer greater than or equal to 2.

Abstract translation: 本发明提供了一种高数据速率宽带分组化无线通信信号的多天线发射机波束成形的装置和方法，其中每个信号包括N个频率，其中N是正整数。 在示例性实施例中，该装置包括：（1）发射波束形成器（220），其跨M个天线对N个频率中的每一个进行信号的相位和加权，从而产生M个同相和加权频率数据，并且M反向快速 将M个相位和加权的频率数据转换成M个数字输出的傅立叶变换单元（IFFT 230，232）以及M个发送天线（260,262），M个发送天线的M个相位和加权的信号，其中M是更大的整数 超过或等于2。

公开(公告)号：WO2004075458A3

公开(公告)日：2005-03-24

申请号：PCT/US2004003468

申请日：2004-02-06

Applicant: ATHEROS COMM INC ,  WANG YI-HSIU

Inventor： WANG YI-HSIU

IPC: G01S1/00 ,  H04L12/28 ,  H04W64/00 ,  G01S3/02

CPC classification number: H04W4/02 ,  G01S5/12 ,  G01S5/14 ,  G01S19/05 ,  G01S19/06 ,  G01S19/252 ,  G01S19/28 ,  G01S19/29 ,  G01S19/48 ,  H04B7/1851 ,  H04W64/00 ,  H04W84/12 ,  H04W88/08

Abstract: Accurate position capability can be quickly provided using a Wireless Local Area Network (WLAN). When associated with a WLAN, a wireless device (102) can quickly determine its relative and/or coordinate position based on information provided by an access point (101) in the WLAN. Before the wireless device (102) disassociates with the access point (101), the WLAN can periodically provide time, location, and decoded GPS data to the wireless device (101). In this manner, the wireless device (102) can significantly reduce the time to acquire the necessary GPS satellite data to determine its coordinate position.

Abstract translation: 使用无线局域网（WLAN）可以快速提供准确的定位能力。 当与WLAN相关联时，无线设备（102）可以基于由WLAN中的接入点（101）提供的信息来快速确定其相对和/或坐标位置。 在无线设备（102）与接入点（101）分离之前，WLAN可以周期性地向无线设备（101）提供时间，位置和解码的GPS数据。 以这种方式，无线设备（102）可以显着减少获取必要的GPS卫星数据以确定其坐标位置的时间。

公开(公告)号：WO02091517A8

公开(公告)日：2004-02-19

申请号：PCT/US0214479

申请日：2002-05-07

Applicant: ATHEROS COMM INC

Inventor： SHOR ARIE ,  LABARIC JOVAN E

IPC: H01Q9/28 ,  H01Q21/06 ,  H01Q1/38 ,  H01Q9/38

CPC classification number: H01Q21/062 ,  H01Q9/28

Abstract: The present invention provides a planar antenna (1) having a scalable multi-dipole structure for receiving, and transmitting high-frequency signals, including a plurality of opposing layers of conducting strips disposed upon either side of a dielectric substrate (5). The dipoles (2,4,6,8) are bifurcated between sides of the substrate (5) on wich the dipoles are disposed. A feed line (12) is balanced to a coaxial cable and feeds one half of the bifurcated dioles (2B,4B,6B,8B), and an idependent feed line (10) is connected to the other half of the bifurcated depoles (2A,4A,6A,8A). Sets of the dipoles are arranged symmetrically around a center axis (30) of the feed lines (10,12). The sets of dipoles are in series with other sets of dipoles. The antenna is ideally suited for operation in the 5.15-5.35 GHz. band.

Abstract translation: 本发明提供了一种具有可伸缩的多偶极结构的平面天线（1），用于接收并传输高频信号，所述高频信号包括设置在电介质基片（5）两侧的多个相对的导电条层。 偶极子（2,4,6,8）在配置偶极子的基板（5）的侧面之间分叉。 馈电线（12）与同轴电缆平衡，并馈送一半分叉的双极（2B，4B，6B，8B），并且独立的馈线（10）连接到分叉的沐浴露的另一半（2A ，4A，6A，8A）。 偶极子的集合围绕进给线（10,12）的中心轴线（30）对称布置。 偶极子组与其他偶极子串联。 天线非常适合5.15-5.35 GHz的工作。 带。

公开(公告)号：WO03028327A2

公开(公告)日：2003-04-03

申请号：PCT/US0230016

申请日：2002-09-19

Applicant: ATHEROS COMM INC

Inventor： BAAS BEVAN M ,  GILBERT JEFFREY M ,  MCFARLAND WILLIAM ,  MENG TERESA H ,  TEHRANI ARDAVAN MALEKI

IPC: H03H17/02 ,  H04L5/06 ,  H04L7/00 ,  H04L25/03 ,  H04L27/00 ,  H04L27/26

CPC classification number: H04L25/03012 ,  H03H17/02 ,  H04L27/2628 ,  H04L27/265 ,  H04L2025/03414

Abstract: A circular filtering system which prevents the problem of inter-symbol interference. The circular filtering system utilizes a buffer memory to store samples of a given symbol and provide only these samples to a linear filter such that the output of the filter, for any given symbol is formed by filtering only samples of that input symbol. Each symbol is filtered independent of other symbols hence eliminating inter-symbol interference caused by filtering. Where symbols are tolerant to a fixed phase shift for each symbol, the circular filtering system can be simplified by reducing the size of the buffer and introducing a multiplexer.

Abstract translation: 一种圆形滤波系统，可防止符号间干扰问题。 圆形过滤系统利用缓冲存储器来存储给定符号的样本，并且仅将这些样本提供给线性滤波器，使得对于任何给定符号的滤波器的输出仅通过对该输入符号的样本进行滤波来形成。 每个符号被独立于其他符号进行滤波，从而消除由滤波引起的符号间干扰。 在符号对每个符号进行固定相移的情况下，可以通过减小缓冲器的大小并引入多路复用器来简化圆形滤波系统。

公开(公告)号：WO02091104A3

公开(公告)日：2003-02-06

申请号：PCT/US0210868

申请日：2002-04-05

Applicant: ATHEROS COMM INC

Inventor： HUSTED PAUL J ,  THON LARS E ,  MCFARLAND WILLIAM ,  NG TAO-FEI SAMUEL

IPC: H03G5/16 ,  H04B1/10 ,  H04B17/00 ,  H04B7/00

CPC classification number: H04B1/109 ,  H03G5/165 ,  H04B1/1036

Abstract: An embodiment of the present invention provides an automatic gain control system for a wireless receiver that quickly differentiates desired in-band signals from high power out-of-band signals that overlap into the target band. The system measures power before and after passing a received signal through a pair of finite impulse response filteres (205-IP), (210-IP), (205-Q), (210-Q) and (220) that largely restrict the signal's power to that which is in-band. By comprising the in-band energy of the received signal after filtering to the total signal energy prior to filtering (215), it is possible to determine whether a new in-band signal has arrived. The presence of this new in-band signal is then verified by a multi-threshold comparison of the normalized self-correlation (225) to verify the presence of a new, desired in-band signal.

Abstract translation: 本发明的实施例提供了一种用于无线接收机的自动增益控制系统，其快速地将期望的带内信号与重叠到目标频带中的高功率带外信号区分开来。 系统通过一对有限脉冲响应码（205-IP），（210-IP），（205-Q），（210-Q）和（220）在接收到的信号通过之前和之后测量功率， 信号的功率是带内的。 通过在滤波之前将接收信号的带内能量过滤到总信号能量（215）之后，可以确定新的带内信号是否已经到达。 然后通过归一化自相关（225）的多阈值比较来验证这种新的带内信号的存在，以验证是否存在新的期望的带内信号。

公开(公告)号：WO0250848A3

公开(公告)日：2002-08-29

申请号：PCT/US0146575

申请日：2001-11-06

Applicant: ATHEROS COMM INC

Inventor： YUE CHIK PATRICK

IPC: H01F41/04 ,  H01F17/00 ,  H01F27/36

CPC classification number: H01F17/0006 ,  H01F27/362

Abstract: An integrated circuit inductor structure has a substrate disposed below an inductor. The structure also has plural conductive segments located between the substrate and the inductor. The conductive segments connect at substantially a point below the center of the inductor. An insulating layer lies between the inductor and the conductive segments.

Abstract translation: 集成电路电感器结构具有设置在电感器下方的衬底。 该结构还具有位于衬底和电感器之间的多个导电段。 导电段大致在电感器中心的下方连接。 绝缘层位于电感器和导电段之间。

公开(公告)号：WO0249148A2

公开(公告)日：2002-06-20

申请号：PCT/US0146901

申请日：2001-12-06

Applicant: ATHEROS COMM INC

Inventor： LEBARIC JOVAN E ,  DAO ANDY

IPC: H01Q1/38 ,  H01Q9/36 ,  H01Q9/42 ,  H01Q

CPC classification number: H01Q9/42 ,  H01Q1/38 ,  H01Q9/36

Abstract: Systems and methods of mounting an antenna on a printed circuit board (PCB) are presented. In accordance with the method, an antenna is inserted into an opening formed through a PCB and makes electrical contract with a transmission feed on a top side of the PCB. The antenna is secured to the PCB at the bottom side of the PCB. Methods of manufacturing an antenna capable of being mounted on a PCB are presented. In accordance with the method, the antenna is formed by stamping out a unitary piece of material is stamped out from a larger section of material according to design dimensions of the unitary piece of material selected according to an operating wavelength. The unitary piece of material includes a circular area having a center and an outer region, and a stem area having a first end and a second end. In a side stem antenna, the first end is joined with the outer region and the unitary piece is bendable at the first end and the outer region. In a central stem antenna, the first end is joined with the center and the unitary piece is bendable at the first end and the center.

Abstract translation: 提出了将天线安装在印刷电路板（PCB）上的系统和方法。 根据该方法，将天线插入到通过PCB形成的开口中，并与PCB的顶侧上的传输馈电进行电收缩。 天线固定在PCB底部的PCB上。 提出了能够安装在PCB上的天线的制造方法。 根据该方法，通过冲压形成天线，根据根据工作波长选择的整体材料的设计尺寸，从较大部分的材料冲压出整体材料。 整体材料包括具有中心和外部区域的圆形区域，以及具有第一端和第二端的杆部区域。 在侧杆天线中，第一端与外部区域连接，整体件可在第一端和外部区域弯曲。 在中央杆天线中，第一端与中心连接，整体件可在第一端和中心弯曲。