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公开(公告)号：US07417517B2
公开(公告)日：2008-08-26
申请号：US11457238
申请日：2006-07-13
IPC分类号： H01P1/20
CPC分类号： H01P1/203
摘要： A method and apparatus for a highpass filter structure using transmission line construction which has multiple output tabs for selection of corner frequencies utilizing a plurality of resonators coupled to the transmission line. The transmission line has a characteristic impedance which increases exponentially with respect to a distance from the input.
摘要翻译： 一种使用传输线结构的高通滤波器结构的方法和装置，其具有多个输出接头，用于利用耦合到传输线的多个谐振器来选择拐角频率。 传输线具有相对于距离输入的距离指数地增加的特性阻抗。
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42.发明授权Procedures for merging the mediation device protocol with a network layer protocol 有权将中介设备协议与网络层协议合并的过程公开(公告)号：US07251222B2
公开(公告)日：2007-07-31
申请号：US10022935
申请日：2001-12-18
申请人： Priscilla Chen , Masahiro Maeda , Edgar H. Callaway, Jr. , Monique Bourgeois , Yan Huang , Jiang Huang , Qicai Shi
发明人： Priscilla Chen , Masahiro Maeda , Edgar H. Callaway, Jr. , Monique Bourgeois , Yan Huang , Jiang Huang , Qicai Shi
CPC分类号： H04L61/2038 , H04J3/0638 , H04L29/12254 , H04L45/02 , H04L45/026 , H04L45/26
摘要： A process for merging and using the Mediation Device Protocol with a network layer protocol. Under the merged protocol, each device joining a network enters into two stages: the Set-Up Stage and the Normal Operational Stage. During the Set-Up Stage, the device identifies its neighbors, builds a neighborhood list, obtains a Logical ID, and picks a parent node in the network. After the Set-Up Stage is complete, the device enters the Normal Operational Stage where it will send/receive control and data messages, invite and help new nodes to join the network, recover from broken links or topology changes, and other normal network operations.
摘要翻译： 用于将中介设备协议与网络层协议合并和使用的过程。 在合并协议下，加入网络的每个设备分为两个阶段：安装阶段和正常运行阶段。 在设置阶段，设备识别其邻居，建立邻居列表，获取逻辑ID，并选择网络中的父节点。 设置阶段完成后，设备进入正常操作阶段，发送/接收控制和数据消息，邀请和帮助新节点加入网络，从断链或拓扑变化恢复，以及其他正常的网络操作 。
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公开(公告)号：US06553060B2
公开(公告)日：2003-04-22
申请号：US09967282
申请日：2001-09-28
IPC分类号： H04L516
CPC分类号： H04W72/0453 , H04L5/0007 , H04L5/0033 , H04L5/0044 , H04L5/0062 , H04L27/0006
摘要： A transceiver device (52 or 10) operates as a source of a data transmission in a communication system (50) capable of dynamically allocating spectrum for transmission of the data transmission between the transceiver device (52) and a second transceiver device (51). The transceiver device (10) includes a transmitter, a receiver coupled to the transmitter and a processor or controller (12) coupled to the transmitter and receiver. The transceiver device is programmed to monitor the spectrum (channels 1-13 of FIG. 3) to determine if a portion (channels 4-8 for example in time slot 8) of the spectrum is available. The transceiver determines what portion of the spectrum is desired for data transmission and then transmits (see time slots 11 and 13) the data transmission within a dynamically selected portion of the available spectrum.
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公开(公告)号：US06519275B2
公开(公告)日：2003-02-11
申请号：US10022942
申请日：2001-12-18
IPC分类号： H04B1707
CPC分类号： H04B1/7075
摘要： A system and method for orthogonal modulation of signals in communication systems. In the transmitter, differentially coded symbols are used to select time-shifted code sequences. The timing, or code position, of a code sequence is determined at the receiver by comparison to the previous code from the same channel, thus eliminating the need for dual-channel transmission and eliminating error due to differences in path propagation time. A fixed preamble code is also used to synchronize the receiver.
摘要翻译： 一种用于通信系统中信号正交调制的系统和方法。 在发射机中，使用差分编码符号来选择时移码序列。 通过与来自相同信道的先前代码进行比较，在接收器处确定码序列的定时或码位置，从而消除了对双信道传输的需要，并消除由于路径传播时间差异引起的误差。 固定的前导码也用于同步接收机。
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45.发明授权Method and apparatus for baud rate detection in an FM receiver using parameters unrelated to baud rate as confirmation 失效使用与波特率无关的参数作为确认，在FM接收机中进行波特率检测的方法和装置
公开(公告)号：US5631924A
公开(公告)日：1997-05-20
申请号：US491827
申请日：1995-06-19
CPC分类号： H03D3/007 , H04L25/0262
摘要： A method for determining whether a baud rate of a frequency modulated (FM) signal received by a receiver matches a predetermined baud rate. A parameter other than the baud rate is detected and used to confirm whether baud rate detection should be made, or whether if made, is reliable. The parameter is frequency deviation of the received FM signal, or other suitable parameters of the received FM signal.
摘要翻译： 一种用于确定由接收机接收的调频（FM）信号的波特率是否匹配预定波特率的方法。 检测波特率以外的参数，用于确认是否进行波特率检测，或者确定是否可靠。 该参数是接收到的FM信号的频率偏差，或接收到的FM信号的其他合适的参数。
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46.发明授权Zerox-IF receiver with tracking second local oscillator and demodulator phase locked loop oscillator 失效具有跟踪第二本地振荡器和解调器锁相环振荡器的Zerox-IF接收器
公开(公告)号：US5606731A
公开(公告)日：1997-02-25
申请号：US399805
申请日：1995-03-07
摘要： A zero-intermediate frequency receiver circuit (11) for receiving a radio frequency signal detected by an antenna (14). The receiver circuit (10) comprises a second local oscillator circuit (25) and an oscillator circuit (60) of a phase locked loop demodulator (36) which are identical and track each other so as to provide a more accurate reference for processing a demodulated signal. A current reference (39) providing a current reference signal utilized by the second local oscillator circuit (25) and the oscillator circuit (60) of the phase locked loop demodulator (36).
摘要翻译： 一种用于接收由天线（14）检测的射频信号的零中频接收机电路（11）。 接收机电路（10）包括第二本地振荡器电路（25）和锁相环解调器（36）的振荡器电路（60），它们彼此相同并相互跟踪，以便提供更准确的参考用于处理解调的 信号。 提供由第二本地振荡器电路（25）和锁相环解调器（36）的振荡器电路（60）使用的电流参考信号的电流参考（39）。
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公开(公告)号：US5604926A
公开(公告)日：1997-02-18
申请号：US399784
申请日：1995-03-07
摘要： A phase locked loop (PLL) circuit for use as a demodulator and other applications. The PLL circuit (200) comprises a phase detector (210), a transconductance amplifier (212) and a current controlled oscillator (ICO) (214). The phase detector has two signal inputs and two outputs, and detects a phase difference between signals at its inputs. A capacitor C1 is connected to the output of phase detector (210) and develops an output voltage signal vo(t). A transconductance amplifier (212) is coupled to the capacitor C1 and converts the output voltage signal vo(t) to an output current signal. The ICO (214) is coupled to the transconductance amplifier (212) and the second output of the phase detector (210) and generates an output signal having a frequency which is proportional to an input current signal. The output signal of the ICO (214) is coupled to the second signal input of the phase detector (212).
摘要翻译： 用作解调器和其他应用的锁相环（PLL）电路。 PLL电路（200）包括相位检测器（210），跨导放大器（212）和电流控制振荡器（ICO）（214）。 相位检测器具有两个信号输入和两个输出，并检测其输入信号之间的相位差。 电容器C1连接到相位检测器（210）的输出端并产生输出电压信号vo（t）。 跨导放大器（212）耦合到电容器C1，并将输出电压信号vo（t）转换成输出电流信号。 ICO（214）耦合到跨导放大器（212）和相位检测器（210）的第二输出端，并产生具有与输入电流信号成比例的频率的输出信号。 ICO（214）的输出信号耦合到相位检测器（212）的第二信号输入端。
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48.发明授权
公开(公告)号：US5063357A
公开(公告)日：1991-11-05
申请号：US562361
申请日：1990-08-03
IPC分类号： H03L7/07
CPC分类号： H03L7/07
摘要： A high stability oscillator circuit 100 having an output 150 and a multiple of reference oscillators 102, 104, and 106 for enhanced stability and reliability is disclosed. The output signals of these oscillators 108, 110, and 112 are mixed and analyzed for determination of excessive frequency shift including component failure. Additionally a switch 148 decouples the shifted oscillator signal from the output of the circuit 150 and couples another one of the oscillators in its place.
摘要翻译： 公开了一种具有输出150和多个参考振荡器102,104和106的高稳定性振荡器电路100，用于增强稳定性和可靠性。 对这些振荡器108,110和112的输出信号进行混合和分析，以确定包括组件故障在内的过大的频移。 此外，开关148将移位的振荡器信号与电路150的输出分离，并将另一个振荡器耦合到其位置。
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