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公开(公告)号：US5483696A
公开(公告)日：1996-01-09
申请号：US188854
申请日：1994-01-31
CPC分类号： H03D7/1433 , H03D7/1408 , H03D7/1425 , H03D7/1458 , H03C1/542 , H03D2200/0043
摘要： A balanced mixer is used as a switch. In digital mode, the balanced mixer receives a digital mode analog waveform and a local oscillator (L.O.). The balanced mixer mixes the waveform and the L.O. to provide a resultant output signal. In analog mode, the L.O. is modulated to contain the communication information. No analog signal is present on the port of the mixer which received the digital mode analog waveform in digital mode. The desired output of the mixer is the modulated L.O. In order to pass the L.O. through the mixer, a DC bias is applied to one of the waveform terminals of the mixer to unbalance it. A diode attenuator is added to the output of the mixer to provide scaling of the analog mode output.
摘要翻译： 平衡混频器用作开关。 在数字模式下，平衡混频器接收数字模拟模拟波形和本地振荡器（L.O.）。 平衡混合器混合波形和L.O. 以提供结果输出信号。 在模拟模式下，L.O. 被调制以包含通信信息。 在数字模式下接收数字模拟模拟波形的混频器端口上没有模拟信号。 混合器的期望输出是调制的L.O. 为了通过L.O. 通过混频器，将DC偏压施加到混频器的一个波形端子以使其不平衡。 二极管衰减器被添加到混频器的输出端以提供模拟模式输出的缩放。
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92.发明授权Temperature-compensated gain-controlled amplifier having a wide linear dynamic range 失效具有宽线性动态范围的温度补偿增益控制放大器
公开(公告)号：US5408697A
公开(公告)日：1995-04-18
申请号：US76228
申请日：1993-06-14
摘要： A high dynamic range linear automatic gain control (AGC) circuit that has independent means for temperature compensation. The temperature compensation circuit of this invention can be used in a closed-loop AGC circuit such as is required in a transceiver for compensating the gains of receiver and transmitter amplifiers to ensure that both track closely over ranges of temperature, frequency and load impedance. The temperature compensation signal is coupled to one of the two gates in a field effect transistor (FET) amplifier to maintain a constant gain function over ranges of temperature, frequency and load impedance. Thermal compensation for the transmitter amplifier is derived from the thermal compensation signal for the receiver amplifier.
摘要翻译： 高动态范围线性自动增益控制（AGC）电路，具有独立的温度补偿装置。 本发明的温度补偿电路可以用在诸如收发器中所需的闭环AGC电路中，用于补偿接收机和发射机放大器的增益，以确保两个轨道紧密接近温度，频率和负载阻抗的范围。 温度补偿信号耦合到场效应晶体管（FET）放大器中的两个栅极中的一个，以在温度，频率和负载阻抗范围内保持恒定的增益函数。 发射机放大器的热补偿来自接收放大器的热补偿信号。
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公开(公告)号：US5267262A
公开(公告)日：1993-11-30
申请号：US773067
申请日：1991-10-08
IPC分类号： H04J13/04 , H04B7/005 , H04B7/26 , H04W52/00 , H04W52/02 , H04W52/06 , H04W52/08 , H04W52/10 , H04W52/12 , H04W52/40 , H04W52/52 , H04L27/30 , H04J13/00 , H04B7/204
CPC分类号： H04W52/52 , H04W52/0245 , H04W52/06 , H04W52/08 , H04W52/10 , H04W52/12 , H04W52/40 , Y02B60/50
摘要： A power control system for a cellular mobile telephone system in which system users communicate information signals between one another via at least one cell site using code division multiple access spread spectrum communication signals. The power control system controls transmission signal power for each cellular mobile telephone in the cellular mobile telephone system wherein each cellular mobile telephone has an antenna, transmitter and receiver and each cell-site also has an antenna, transmitter and receiver. Cell-site transmitted signal power is measured as received at the mobile unit. Transmitter power is adjusted at the mobile unit in an opposite manner with respect to increases and decreases in received signal power. A power control feedback scheme may also be utilized. At the cell-site communicating with the mobile unit, the mobile unit transmitted power is measured as received at the cell-site. A command signal is generated at the cell-site and transmitted to the mobile unit for further adjusting mobile unit transmitter power corresponding to deviations in the cell site received signal power. The feedback scheme is used to further adjust the mobile unit transmitter power so that mobile unit transmitted signals arrive at the cell-site at a desired power level.
摘要翻译： 一种用于蜂窝移动电话系统的功率控制系统，其中系统用户通过使用码分多址扩频通信信号的至少一个小区站点在彼此之间传送信息信号。 功率控制系统控制蜂窝移动电话系统中的每个蜂窝移动电话的传输信号功率，其中每个蜂窝移动电话具有天线，发射机和接收机，并且每个小区站点也具有天线，发射机和接收机。 在移动单元处测量接收到的站点发送信号功率。 相对于接收信号功率的增加和减少，发射机功率在移动单元处以相反的方式被调整。 还可以使用功率控制反馈方案。 在与移动单元通信的小区站点处，移动单元发送的功率在小区站点被接收到。 在小区站点生成指令信号，发送给移动单元，进一步调整与单元现场接收信号功率的偏差对应的移动单元发射机功率。 反馈方案用于进一步调整移动单元发射机功率，使得移动单元发送的信号以期望的功率电平到达小区站点。
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94.发明授权Digital frequency synthesizer with random jittering for reducing discrete spectral spurs 失效具有随机抖动的数字频率合成器，用于减少离散光谱刺激
公开(公告)号：US4410954A
公开(公告)日：1983-10-18
申请号：US195274
申请日：1980-10-08
CPC分类号： G06F7/544
摘要： A digital frequency synthesizer for synthesizing a selected frequency or a library of preselected frequencies in which a selected phase increment is fed at a clock rate to an adder and accumulating register in mutual cooperation as a digital integrator, the resultant period overflow of the register corresponding to the selected frequency of interest. An improvement is provided for reducing discrete spectral spurs in the spectral output of the synthesizer by means of preselectively randomly jittering the input to, or output of, the register, whereby the average periodicity of the register overflow for a selected frequency is not affected.
摘要翻译： 一种数字频率合成器，用于将所选频率或预选频率库以时钟速率馈送到加法器并相互协作的累加寄存器作为数字积分器，所述寄存器对应的周期溢出 选定的兴趣频率。 提供了通过预先选择地随机抖动寄存器的输入或输出到寄存器来减少合成器的频谱输出中的离散频谱杂波的改进，由此对所选频率的寄存器溢出的平均周期性不受影响。
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公开(公告)号：US09118380B2
公开(公告)日：2015-08-25
申请号：US11547698
申请日：2004-04-30
CPC分类号： H04B7/155 , G01S5/0273 , G01S19/06 , H04B7/18554
摘要： This disclosure is directed to a repeater (14) of a wireless communication system (6) that includes a positioning unit (4), such as a GPS receiver, in order to calculate the location of the repeater (14). In addition, various techniques are described that exploit the positioning information generated by the repeater (14) in order to improve the wireless communication system (6).
摘要翻译： 本公开涉及一种包括诸如GPS接收机的定位单元（4）的无线通信系统（6）的中继器（14），以便计算中继器（14）的位置。 此外，描述了利用由中继器（14）生成的定位信息以改进无线通信系统（6）的各种技术。
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公开(公告)号：US08860364B2
公开(公告)日：2014-10-14
申请号：US12951269
申请日：2010-11-22
CPC分类号： H03H7/40 , H02J5/005 , H02J7/0027 , H02J7/025 , H02J50/12 , H02J50/20 , H02J50/90 , H04B5/0037 , H04B5/0081
摘要： Exemplary embodiments are directed to power distribution among a plurality of receivers. A method may include requesting at least one receiver of a plurality of receivers within a charging region of a transmitter to modify an associated load resistance to achieve a desired power distribution among the plurality of receivers. The method may further include requesting each receiver of the plurality of receivers to modify an associated load resistance to achieve a desired total impedance as seen by the transmitter while maintaining the desired power distribution among the plurality of receivers.
摘要翻译： 示例性实施例涉及多个接收器之间的功率分配。 方法可以包括请求发射机的充电区域内的多个接收机的至少一个接收机来修改相关联的负载电阻以在多个接收机之间实现期望的功率分配。 该方法还可以包括请求多个接收机中的每个接收机修改相关联的负载电阻以实现由发射机看到的期望的总阻抗，同时保持多个接收机之间的所需功率分配。
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公开(公告)号：US20100277003A1
公开(公告)日：2010-11-04
申请号：US12713123
申请日：2010-02-25
CPC分类号： H01F38/14 , H02J7/025 , H02J17/00 , H02J50/12 , H02J50/40 , H02J50/60 , H02J50/70 , H02J50/80 , H02J50/90 , H04B5/0037 , H04B5/0093
摘要： Exemplary embodiments are directed to wireless power. A wireless power receiver includes a receive antenna for coupling with near field radiation in a coupling-mode region generated by a transmit antenna operating at a resonant frequency. The receive antenna generates an RF signal when coupled to the near filed radiation and a rectifier converts the RF signal to a DC input signal. A direct current (DC)-to-DC converter coupled to the DC input signal generates a DC output signal. A pulse modulator generate a pulse-width modulation signal to the DC-to-DC converter to adjust a DC impedance of the wireless power receiver by modifying a duty cycle of the pulse-width modulation signal responsive to at least one of a voltage of the DC input signal, a current of the DC input signal, a voltage of the DC output signal, and a current of the DC output signal.
摘要翻译： 示例性实施例涉及无线电力。 无线电力接收机包括用于以由谐振频率工作的发射天线产生的耦合模式区域中的近场辐射耦合的接收天线。 当耦合到近场辐射时，接收天线产生RF信号，并且整流器将RF信号转换成DC输入信号。 耦合到DC输入信号的直流（DC）到DC转换器产生DC输出信号。 脉冲调制器通过修改脉冲宽度调制信号的占空比来响应于以下中的至少一个：DC至DC转换器产生脉冲宽度调制信号以调整无线功率接收机的DC阻抗， 直流输入信号，直流输入信号的电流，直流输出信号的电压和直流输出信号的电流。
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98.发明申请METHOD AND APPARATUS FOR TIME-ALIGNING TRANSMISSIONS FROM MULTIPLE BASE STATIONS IN A CDMA COMMUNICATION SYSTEM 有权CDMA通信系统中多个基站的时间调度传输方法与装置公开(公告)号：US20100260155A1
公开(公告)日：2010-10-14
申请号：US12772792
申请日：2010-05-03
IPC分类号： H04W56/00
CPC分类号： H04W56/002 , H04B7/2668 , H04B2201/70702 , H04W56/001 , H04W56/0015 , H04W56/0045 , H04W92/20
摘要： Schemes to time-align transmissions from multiple base stations to a terminal. To achieve time-alignment, differences between the arrival times of transmissions from the base stations, as observed at the terminal, are determined and provided to the system and used to adjust the timing at the base stations such that terminal-specific radio frames arrive at the terminal within a particular time window. In one scheme, a time difference between two base stations is partitioned into a frame-level time difference and a chip-level time difference. Whenever requested to perform and report time difference measurements, the terminal measures the chip-level timing for each candidate base station relative to a reference base station. Additionally, the terminal also measures the frame-level timing and includes this information in the time difference measurement only if required. Otherwise, the terminal sets the frame-level part to a predetermined value (e.g., zero).
摘要翻译： 将来自多个基站的传输时间对齐到终端的方案。 为了实现时间对准，确定在终端观察到的来自基站的传输的到达时间之间的差异，并将其提供给系统，并用于调整基站处的定时，使得终端专用无线帧到达 终端在特定的时间窗口内。 在一个方案中，两个基站之间的时差被划分为帧级时间差和码片级时间差。 无论何时请求执行和报告时差测量，终端测量每个候选基站相对于参考基站的芯片级定时。 此外，终端还测量帧级定时，并且仅在需要时在时差测量中包括该信息。 否则，终端将帧级部分设置为预定值（例如，零）。
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公开(公告)号：US20090184777A1
公开(公告)日：2009-07-23
申请号：US12411278
申请日：2009-03-25
IPC分类号： H03L5/00
CPC分类号： H03L1/022 , H03B5/06 , H03B5/1265 , H03B2200/0066 , H03B2200/0094 , H03L3/00 , H04B2001/6908
摘要： An apparatus for generating an oscillating signal that includes a circuit to accelerate the time in which an oscillating signal reaches a defined steady-state condition from a cold start. The apparatus includes an oscillating circuit to generate an oscillating signal; a first circuit to supply a first current to the oscillating circuit; and a second circuit to supply a second current to the oscillating circuit, wherein the first and second currents are adapted to reduce the time duration for the oscillating signal to reach a defined steady-state condition. The apparatus may be useful in communication systems that use low duty cycle pulse modulation to establish one or more communications channels, whereby the apparatus begins generating an oscillating signal at approximately the beginning of the pulse and terminates the oscillating signal at approximately the end of the pulse.
摘要翻译： 一种用于产生振荡信号的装置，其包括用于加速从冷启动振荡信号达到确定的稳态状态的时间的电路。 该装置包括产生振荡信号的振荡电路; 向振荡电路提供第一电流的第一电路; 以及向振荡电路提供第二电流的第二电路，其中第一和第二电流适于减小振荡信号达到所定义的稳态条件的持续时间。 该装置在使用低占空比脉冲调制以建立一个或多个通信信道的通信系统中可能是有用的，由此该装置在大约开始的脉冲处开始产生振荡信号，并在脉冲的大致末端终止振荡信号 。
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公开(公告)号：US20090053993A1
公开(公告)日：2009-02-26
申请号：US11547698
申请日：2004-04-30
IPC分类号： H04B7/14
CPC分类号： H04B7/155 , G01S5/0273 , G01S19/06 , H04B7/18554
摘要： This disclosure is directed to a repeater (14) of a wireless communication system (6) that includes a positioning unit (4), such as a GPS receiver, in order to calculate the location of the repeater (14). In addition, various techniques are described that exploit the positioning information generated by the repeater (14) in order to improve the wireless communication system (6).
摘要翻译： 本公开涉及一种包括诸如GPS接收机的定位单元（4）的无线通信系统（6）的中继器（14），以便计算中继器（14）的位置。 此外，描述了利用由中继器（14）生成的定位信息以改进无线通信系统（6）的各种技术。
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