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11.发明授权公开(公告)号：US08131215B2
公开(公告)日：2012-03-06
申请号：US12335031
申请日：2008-12-15
IPC分类号： H04B7/00
CPC分类号： H04W64/00 , G01S13/767
摘要： A reference device determines its distance from a communication device by first using a training process to determine a calibrated time delay for the communication device when the communication device is at a known distance from the reference device. The calibrated time delay is a steady state internal processing delay for the communication device. Subsequently, when the reference device is at an unknown distance from the communication device, the reference device determines the unknown distance using the previously determined calibrated time delay along with a measured signal travel time at the unknown distance.
摘要翻译： 参考设备通过首先使用训练过程来确定其与通信设备的距离，以便当通信设备距离参考设备已知距离时，确定通信设备的校准时间延迟。 校准的时间延迟是通信设备的稳态内部处理延迟。 随后，当参考设备距离通信设备距离未知距离时，参考设备使用先前确定的校准时间延迟以及在未知距离处的测量信号行进时间来确定未知距离。
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12.发明授权Radio receiver having a multi-state variable threshold automatic gain control (AGC) for fast channel scanning acquisition and mehtod for using same 有权具有用于快速信道扫描采集的多状态可变阈值自动增益控制（AGC）的无线电接收机及其使用方法公开(公告)号：US07689217B2
公开(公告)日：2010-03-30
申请号：US11694697
申请日：2007-03-30
IPC分类号： H04Q7/20
CPC分类号： H03G3/3068
摘要： A radio receiver (300) having a multi-state variable threshold automatic gain control (AGC) for fast channel scanning acquisition includes an amplifier (303) having an automatic gain control (AGC) for controlling the gain of a receiver analog signal. An analog-to-digital converter (ADC) (311) is used for converting the receiving analog signal to a digital signal while a digital signal processor (DSP) (325) operates to process the digital signal. A signal magnitude estimator (315) in an AGC controller (313) provides a signal strength estimate of the received signal. The AGC controller (313) then sets the receiver amplifier (303) for an open-loop AGC operational mode and sets a first threshold for triggering an interrupt service request (ISR). This ISR is provided the DSP (325) and the host processor (327) if a radio frequency (RF) signal is detected above a first threshold during a priority scan of a priority channel to minimize interruptions in audio during priority scan.
摘要翻译： 具有用于快速信道扫描获取的多状态可变阈值自动增益控制（AGC）的无线电接收机（300）包括具有用于控制接收机模拟信号的增益的自动增益控制（AGC）的放大器（303）。 当数字信号处理器（DSP）（325）操作以处理数字信号时，模数转换器（ADC）（311）用于将接收模拟信号转换为数字信号。 AGC控制器（313）中的信号幅度估计器（315）提供接收信号的信号强度估计。 然后，AGC控制器（313）将接收机放大器（303）设置为开环AGC操作模式，并设置触发中断服务请求（ISR）的第一阈值。 如果在优先级信道的优先扫描期间检测到高于第一阈值的射频（RF）信号，则在最优化扫描期间最小化音频中断，则该ISR被提供给DSP（325）和主机处理器（327）。
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公开(公告)号：US5303409A
公开(公告)日：1994-04-12
申请号：US894132
申请日：1992-06-04
CPC分类号： H03G3/344
摘要： A receiver (100) includes an audio section (200) which provides for compensated squelch settings which are automatically adjustable for changes in operating conditions such as changes in temperature or receiver channel spacing. Temperature circuit (128) provides a temperature signal (134) and controller (122) provides a signal indicating the channel spacing being used by receiver (100). The two signals are combined and formed into an address word which is in turn used to look-up a compensation word from memory location (218). The compensation word is then combined to a default squelch word by adder (216) providing for a compensated squelch word. The compensated squelch word automatically adjusts the squelch circuit's threshold level in order to compensate for changes in operational conditions affecting the squelch circuit.
摘要翻译： 接收器（100）包括音频部分（200），该音频部分（200）提供对于诸如温度变化或接收机信道间隔的操作条件的变化而可自动调节的补偿静噪设置。 温度电路（128）提供温度信号（134），并且控制器（122）提供指示由接收器（100）使用的信道间隔的信号。 两个信号被组合并形成地址字，该地址字又用于从存储器位置查找补偿字（218）。 然后通过加法器（216）将补偿字组合到默认静噪字，提供补偿的静噪字。 补偿的静噪字自动调整静噪电路的阈值电平，以补偿影响静噪电路的工作条件的变化。
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14.发明授权Automatically controlled varactor tuned matching networks for a crystal filter 失效用于晶体滤波器的自动控制变容二极管调谐匹配网络
公开(公告)号：US5216392A
公开(公告)日：1993-06-01
申请号：US726414
申请日：1991-07-05
CPC分类号： H03H7/40
摘要： A crystal filter network comprises at least one variable impedance network (103a, 103b), at least one crystal filter (103c), and a control circuit (110). Each variable impedance network (103a, 103b) has a control terminal, a first terminal (37, 39), and a second terminal (38, 40) for connecting a first impedance (113) coupled to the first terminal (37), to a second impedance coupled to the second terminal (38). The crystal filter (103c) is coupled to at least one of the first and second terminals. Coupled to the control terminal, the control circuit (110) electrically varies (V.sub.1 and V.sub.2) the variable impedance network (103a, 103b) to provide a predetermined impedance characteristic to the crystal filter network (103c).
摘要翻译： 晶体滤波器网络包括至少一个可变阻抗网络（103a，103b），至少一个晶体滤波器（103c）和控制电路（110）。 每个可变阻抗网络（103a，103b）具有控制端子，第一端子（37,39）和用于将耦合到第一端子（37）的第一阻抗（113））连接到第一端子（38,40）的第二端子 耦合到所述第二端子（38）的第二阻抗。 晶体滤波器（103c）耦合到第一和第二端子中的至少一个。 控制电路（110）耦合到控制端子，电变化（V1和V2）可变阻抗网络（103a，103b）以向晶体滤波器网络（103c）提供预定的阻抗特性。
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公开(公告)号：US08565145B2
公开(公告)日：2013-10-22
申请号：US12968443
申请日：2010-12-15
申请人： Shakeeb Z. Khan , Joseph J. Medvid, III , Charles R. Ruelke , Richard S. Young , Branko L. Avanic , Lorenzo Cruger , Tan V. Dinh , Mahes M. Ekanayake , Armando J. Gonzalez
发明人： Shakeeb Z. Khan , Joseph J. Medvid, III , Charles R. Ruelke , Richard S. Young , Branko L. Avanic , Lorenzo Cruger , Tan V. Dinh , Mahes M. Ekanayake , Armando J. Gonzalez
IPC分类号： H04B7/14
摘要： A method for transmitting a communication generated by an originating device to a target device using a repeating device is provided. In the method the communication is transmitted from the originating device and received at the repeating device. A repeater request sequence is transmitted from the originating device and retransmitted from the first repeating device to the target device before the repeater request sequence is received at the first repeating device.
摘要翻译： 提供了一种用于使用重复装置将由始发设备生成的通信发送到目标设备的方法。 在该方法中，通信从始发设备发送并在重复设备处接收。 在第一重复设备接收到中继器请求序列之前，从始发设备发送中继器请求序列，并从第一中继设备重传到目标设备。
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公开(公告)号：US08295825B2
公开(公告)日：2012-10-23
申请号：US12957190
申请日：2010-11-30
申请人： Ellis A. Pinder , Branko L. Avanic , Lorenzo J. Cruger , Tan V. Dinh , Mahes M. Ekanayake , Armando J. Gonzalez , Joseph P. Heck , Shakeeb Z. Khan , Joseph J. Medvid, III , Wayne M. Phang , Charles R. Ruelke , Dang N. Vu , Richard S. Young
发明人： Ellis A. Pinder , Branko L. Avanic , Lorenzo J. Cruger , Tan V. Dinh , Mahes M. Ekanayake , Armando J. Gonzalez , Joseph P. Heck , Shakeeb Z. Khan , Joseph J. Medvid, III , Wayne M. Phang , Charles R. Ruelke , Dang N. Vu , Richard S. Young
IPC分类号： H04W4/00
CPC分类号： H04W76/40
摘要： Methods of enabling late entry into an on-going spread spectrum call are described. A late join frame replaces, and has the same size as, a traffic frame. A late join slot in the late join frame contains sufficient information in preamble and sync subframes to permit a target to join the call. The traffic slots in the late join frame replicate data such that call quality of the call is substantially unaffected if one of the remaining traffic frames is not received. The preamble and sync subframes frequencies may be the same as, or different from, preamble and sync frames frequencies during a call establishment phase of the call. If different, the preamble and sync subframes frequencies are selected from one or more frequencies. Use of the preamble and sync subframes frequencies is compensated for when selecting the traffic slot frequencies to obtain uniform utilization of the spectrum.
摘要翻译： 描述了能够延迟进入正在进行的扩频呼叫的方法。 后期连接框架替换并具有与交通帧相同的大小。 晚连接帧中的延迟加入时隙包含前导码和同步子帧中足够的信息，以允许目标方加入呼叫。 后期加入帧中的业务时隙复制数据，使得如果未接收到剩余业务帧之一，则呼叫的呼叫质量基本上不受影响。 前导码和同步子帧频率可以在呼叫的呼叫建立阶段期间与前同步码和同步帧频率相同或不同。 如果不同，则从一个或多个频率中选择前同步码和同步子帧频率。 当选择业务时隙频率以获得频谱的均匀利用时，对前导码和同步子帧频率的使用进行补偿。
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17.发明申请METHOD AND APPARATUS FOR REMOVING DC OFFSET IN A DIRECT CONVERSION RECEIVER 有权用于在直接转换接收器中移除直流偏置的方法和装置公开(公告)号：US20100144303A1
公开(公告)日：2010-06-10
申请号：US12329034
申请日：2008-12-05
IPC分类号： H04B1/10
CPC分类号： H04B1/30 , H04L25/061
摘要： A method and apparatus for correcting direct current (DC) offset errors of a received signal in a direct conversion receiver (DCR) are provided. DC offset correction algorithms are incorporated into the DCR, each algorithm being optimized for a particular receive signal operating environment. The DC offset correction algorithms remove DC offset errors in baseband In-phase and Quadrature-phase signals received within the direct conversion receiver baseband signal path. Individual DC offset correction algorithms are selected for use as determined by a signal quality estimator component. A DC offset correction component of the direct conversion receiver determines an appropriate DC offset correction algorithm suited for a particular operating environment. A criterion for a signal quality estimate is set to control transitioning between DCOC algorithms. A dual threshold strategy may be adopted to transition between one DC offset correction algorithm and another DC offset correction algorithm to provide hysteresis.
摘要翻译： 提供一种用于校正直接转换接收机（DCR）中的接收信号的直流（DC）偏移误差的方法和装置。 DC偏移校正算法被并入到DCR中，每个算法针对特定的接收信号操作环境进行优化。 DC偏移校正算法消除了在直接转换接收机基带信号路径内接收的基带同相和正交相信号中的直流失调误差。 选择单个DC偏移校正算法以由信号质量估计器组件确定使用。 直接转换接收机的DC偏移校正分量确定适合于特定操作环境的适当DC偏移校正算法。 设置信号质量估计的标准来控制DCOC算法之间的转换。 可以采用双阈值策略来在一个DC偏移校正算法和另一个DC偏移校正算法之间转换以提供滞后。
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公开(公告)号：US07474711B2
公开(公告)日：2009-01-06
申请号：US11123291
申请日：2005-05-06
CPC分类号： H04L25/20
摘要： A method for correcting I/Q imbalance in a received signal is disclosed. The method includes the steps of grouping (202) the received signal into a predetermined number of clusters, and determining (204) at least one coefficient value by feeding the predetermined number of clusters into a nested loop. The method further includes computing (206) a compensation value based on the at least one coefficient value, and correcting (208) the I/Q imbalance in the received signal by using the compensation value.
摘要翻译： 公开了一种用于校正接收信号中的I / Q不平衡的方法。 该方法包括以下步骤：将接收到的信号分组（202）到预定数量的聚类中，并且通过将预定数量的聚类馈送到嵌套循环来确定（204）至少一个系数值。 该方法还包括基于至少一个系数值来计算（206）补偿值，并通过使用补偿值来校正（208）接收信号中的I / Q不平衡。
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公开(公告)号：US5576669A
公开(公告)日：1996-11-19
申请号：US431177
申请日：1995-04-28
申请人： Charles R. Ruelke
发明人： Charles R. Ruelke
CPC分类号： H01P5/184 , H01P5/18 , H05K1/0237 , H05K1/0298
摘要： A coupling device (100) for coupling RF energy on a transmission line (101) to a forward coupler (107) and a reverse coupler (113). The coupling device (100) includes a first coupling structure (121) and second coupling structure (125) which are parallel plate structures positioned a predetermined distance in a plane parallel to the transmission line (101), forward coupler (107) and reverse coupler (113). The first coupling structure (121) and second coupling structure (125) are used to increase the coupling coefficient and directivity of the forward coupler (107) and reverse coupler (113). One or more vias (139, 141) are used to connect forward coupler (107) and reverse coupler (113) to the first coupling structure (121) and the second coupling structure (125). The addition of the first coupling structure (121) and the second coupling structure (125) allow for a greater coupling efficiency without physically moving transmission line (101) towards either forward coupler (107) or reverse coupler (113).
摘要翻译： 一种用于将传输线（101）上的RF能量耦合到前向耦合器（107）和反向耦合器（113）的耦合装置（100）。 耦合装置（100）包括第一耦合结构（121）和第二耦合结构（125），它们是平行于平行于平行于传输线（101）的平面中的预定距离的平行板结构，前向耦合器（107）和反向耦合器 （113）。 第一耦合结构（121）和第二耦合结构（125）用于增加正向耦合器（107）和反向耦合器（113）的耦合系数和方向性。 一个或多个通孔（139,141）用于将前向耦合器（107）和反向耦合器（113）连接到第一耦合结构（121）和第二耦合结构（125）。 第一耦合结构（121）和第二耦合结构（125）的添加允许更大的耦合效率，而不向物理上移动传输线（101）朝向正向耦合器（107）或反向耦合器（113）。
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公开(公告)号：US5564094A
公开(公告)日：1996-10-08
申请号：US479582
申请日：1995-06-07
IPC分类号： H04B1/10
CPC分类号： H04B1/109
摘要： A radio receiver (10) comprises a plurality of stages and means for selectively adjusting the stages (16, 18, and 22), as a function of the received signal strength to reduce intermodulation distortion. In still another aspect of the invention, a receiver determines the signal strength of a received signal and uses this information to selectively control stages of the receiver in order to reduce the receiver's current drain.
摘要翻译： 无线电接收器（10）包括多个级和用于根据接收信号强度有选择地调节级（16,18和22）的装置，以减少互调失真。 在本发明的另一方面，接收机确定接收信号的信号强度，并使用该信息来选择性地控制接收机的级，以便减少接收机的电流消耗。
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