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    • 41. 发明授权
    • Apparatus for enhancing the dynamic range of shockline-based sampling receivers
    • 用于增强基于冲击线的采样接收器的动态范围的装置
    • US08718586B2
    • 2014-05-06
    • US12495280
    • 2009-06-30
    • Jon MartensKaram Michael Noujeim
    • Jon MartensKaram Michael Noujeim
    • H04B7/00
    • G01R27/32
    • Shockline-based samplers of a vector-network analyzer (VNA) have enhanced dynamic range by using a dynamic bias network applied to the non-linear transmission lines (NLTLs) or shocklines. The bias voltage applied to the NLTL provides direct control over the falling-edge shockline compression, and thus the insertion loss and overall RF bandwidth of the sampler. Alternating between a forward bias voltage to turn off a shockline sampler when it is not needed and thereby reducing spurious generation and improving isolation can be alternatively applied with a reverse bias voltage to turn on the shockline sampler in a normal operation mode. By measuring the shockline output and providing feedback in the reverse-bias mode, the bias voltage can be dynamically adjusted to significantly increase the performance of the NLTL based sampler. In the presence of a strong positive bias voltage, the incoming LO and its harmonics experience large ohmic losses thus preventing gating pulses from forming in the shockline. The ohmic losses enable strong isolation between the LO sampling channels and will increase spectral purity at the VNA test ports.
    • 矢量网络分析仪(VNA)的基于Shockline的采样器通过使用应用于非线性传输线(NLTL)或冲击线的动态偏置网络来增强动态范围。 施加到NLTL的偏置电压可以直接控制下降沿冲击线压缩,从而提供采样器的插入损耗和总体RF带宽。 在不需要冲击线采样器的正向偏置电压之间进行交替,从而减少杂散产生和改善隔离,可替代地以反向偏置电压施加以在正常操作模式下打开冲击线采样器。 通过测量冲击线输出并在反向偏置模式下提供反馈,可以动态调整偏置电压,以显着提高基于NLTL的采样器的性能。 在存在强正偏压的情况下,输入LO及其谐波经历大的欧姆损耗,从而防止在冲击线中形成门控脉冲。 欧姆损耗可实现LO采样通道之间的强大隔离,并将提高VNA测试端口的光谱纯度。
    • 44. 发明授权
    • Elimination of fractional N boundary spurs in a signal synthesizer
    • 消除信号合成器中的分数N边界杂散
    • US08305115B2
    • 2012-11-06
    • US12790460
    • 2010-05-28
    • Donald Anthony Bradley
    • Donald Anthony Bradley
    • H03B21/00
    • H03B21/00H03L7/1976H03L7/23
    • A portable frequency synthesizer is provided with fine tuning over a broad bandwidth using a Fractional N type Delta Sum Phase Locked Loop circuit that enables elimination of boundary value spurs. In the system, frequencies where spurs occur are calculated to define a region of fractional N values that cannot be used with a first time base. To avoid the boundary spurs, a second time base reference is selected that can generate boundary spurs that do not overlap with the first time base. Circuitry is provided to select the appropriate time base and the fractional N values to generate desired output frequencies throughout the synthesizer range while avoiding the boundary spurs.
    • 便携式频率合成器通过使用能够消除边界值杂散的分数N型三角积分锁相环电路在宽带宽上进行精细调谐。 在系统中,计算发生杂散的频率,以定义不能与第一个时基一起使用的分数N值的区域。 为了避免边界刺激,选择可以产生不与第一时基重叠的边界刺激的第二时基参考。 提供电路以选择适当的时基和分数N值,以在整个合成器范围内产生期望的输出频率,同时避免边界刺激。
    • 45. 发明授权
    • System and method for collecting, archiving, and accessing data on base transceiver station performance
    • 用于收集,归档和访问基站收发器性能数据的系统和方法
    • US07983668B2
    • 2011-07-19
    • US11847816
    • 2007-08-30
    • Francis A. Tiernan
    • Francis A. Tiernan
    • H04W24/00H04B17/00
    • H04W24/08H04L43/00
    • The present invention is in the field of base station and network infrastructure maintenance. One embodiment is a method, comprising: collecting base transceiver station performance data into a performance analysis and data collection application; transmitting the base transceiver station performance data wirelessly to a mobile application on a mobile device; and uploading the base transceiver station performance data from the mobile application on the mobile device wirelessly over an internet through a mobile network into a web application. One embodiment is a system, comprising: a base station analyzer for measuring base transceiver station performance, wherein the base station analyzer has wireless access to a mobile application on a mobile device; and the mobile application on the mobile device, wherein the mobile application on the mobile device has wireless access through the internet across a mobile network to a web application.
    • 本发明在基站和网络基础设施维护领域。 一个实施例是一种方法,包括:将基站收发台性能数据收集到性能分析和数据采集应用中; 将基站收发台性能数据无线地发送到移动设备上的移动应用; 以及通过移动网络将来自移动设备上的移动应用的基站收发台性能数据通过因特网无线地上传到web应用中。 一个实施例是一种系统,包括:用于测量基站收发器性能的基站分析器,其中所述基站分析器具有对移动设备上的移动应用的无线接入; 和移动设备上的移动应用,其中移动设备上的移动应用通过移动网络通过因特网无线地访问到web应用。
    • 46. 发明授权
    • Apparatus for extending the bandwidth of a spectrum analyzer
    • 用于扩展频谱分析仪带宽的装置
    • US07746052B2
    • 2010-06-29
    • US11873169
    • 2007-10-16
    • Karam Michael Noujeim
    • Karam Michael Noujeim
    • G01R23/00
    • G01R23/16
    • A spectrum analyzer is provided with frequency-scalable circuit architectures that extend the bandwidth of the spectrum analyzer using an array of couplers. The array of couplers is distributed along the RF signal path at one end, and interfaced to one or more frequency-translation devices such as mixers or samplers at the other. In a first architecture, a single mixer is employed with an LO signal applied to one input and coupler outputs providing RF signals to another input, with switching controlled to select one coupler's RF output to provide to the mixer. In a second architecture, a separate mixer is used, one for each coupler RF signal, with switches selecting one of the mixer IF outputs to select a desired output frequency. Both the first and second embodiments eliminate switching and its associated loss and frequency limitations from the main RF signal path to enable wideband high-dynamic-range spectrum analysis.
    • 频谱分析仪具有频率可升级的电路架构,可使用耦合器阵列扩展频谱分析仪的带宽。 耦合器阵列在一端沿着RF信号路径分布,并且在另一端与一个或多个频率转换装置(例如混频器或采样器)相连。 在第一架构中,使用单个混频器,其中LO信号施加到一个输入端,耦合器输出向另一个输入端提供RF信号,开关控制选择一个耦合器的RF输出以提供给混频器。 在第二架构中,使用单独的混频器,一个用于每个耦合器RF信号,开关选择混频器IF输出之一以选择期望的输出频率。 第一和第二实施例都从主RF信号路径消除了切换及其相关联的损耗和频率限制,以实现宽带高动态范围频谱分析。
    • 47. 发明授权
    • Broadband micro-machined thermal power sensor
    • 宽带微加工热功率传感器
    • US07705582B2
    • 2010-04-27
    • US11735879
    • 2007-04-16
    • Karam Michael Noujeim
    • Karam Michael Noujeim
    • G01R23/04G01R25/02G01N25/00G01J5/00
    • G01K17/00G01J5/12G01K17/006G01R21/04
    • A power sensor includes a substrate, an aperture within the substrate, a membrane formed over at least a portion of the substrate and extending over the aperture, and an electro-thermal transducer partially supported by the insulating membrane. The electro-thermal transducer includes an impedance matched, bifurcated load supported over the aperture by the insulating membrane, and a thermopile extending over the aperture and supported by the insulating membrane, the thermopile being adapted to generate a voltage in response to heat generated in the impedance matched, bifurcated load. A signal conductor is electrically connected with one end of the impedance matched, bifurcated load to guide electromagnetic signals to the load, and a conductive under-layer stratified from the signal conductor by an intermediary dielectric is connected with an opposite end of the impedance matched, bifurcated load to act as a ground plane.
    • 功率传感器包括衬底,衬底内的孔,形成在衬底的至少一部分上并在孔上方延伸的膜以及由绝缘膜部分支撑的电热换能器。 电热换能器包括由绝缘膜支撑在孔上的阻抗匹配的分叉载荷,以及在孔上延伸并由绝缘膜支撑的热电堆,热电堆适于响应于在 阻抗匹配,分叉负载。 信号导体与阻抗匹配的分叉负载的一端电连接以将电磁信号引导到负载,并且通过中间介质从信号导体分层的导电下层与阻抗匹配的相对端连接, 分叉负载作为地平面。
    • 48. 发明申请
    • MINIATURE RF CALIBRATOR UTLIIZING MULTIPLE POWER LEVELS
    • 微型射频校准器UTLIIZING多功率电平
    • US20090072915A1
    • 2009-03-19
    • US11856325
    • 2007-09-17
    • Donald Anthony Bradley
    • Donald Anthony Bradley
    • H03L1/00
    • H03L1/022
    • A small light-weight battery operated calibrator device provides a precise sine wave output for use in calibration of test equipment, such as a RF Power Meter or a Spectrum Analyzer. The calibration device includes two power levels, one −40 dBm and one 0 dBm. The purpose of the two power levels is to obtain a slope and offset for correction of the RF power measuring device being calibrated. Operation indication LED lights are provided to indicate which of the two powers are in use, and if battery power is below acceptable levels. Miniature low power components including a crystal oscillator and a divide by 2 integrated circuit that generates a precise square wave and a low pass filter for converting the square wave into a precise sine wave allows the calibrator to be battery operated and stored as a calibration component.
    • 小型轻巧的电池校准器设备提供精确的正弦波输出,用于校准测试设备,如RF功率计或频谱分析仪。 校准装置包括两个功率电平,一个-40 dBm和一个0 dBm。 两个功率电平的目的是获得正在校准的RF功率测量装置的校正的斜率和偏移。 提供操作指示LED指示灯,以指示两个电源中的哪一个正在使用,以及电池电量是否低于可接受的水平。 包括晶体振荡器和产生精确方波的2个集成电路的微型低功率组件和用于将方波转换成精确的正弦波的低通滤波器允许校准器被电池操作并存储为校准组件。
    • 49. 发明申请
    • ANALOG PSEUDO RANDOM BIT SEQUENCE GENERATOR
    • 模拟PSEUDO随机位序列发生器
    • US20080290912A1
    • 2008-11-27
    • US11752739
    • 2007-05-23
    • Donald Anthony Bradley
    • Donald Anthony Bradley
    • H03B19/00
    • H03K3/84
    • A Pseudo Random Bit Sequence (PRBS) generator is provided with components to enable operation at very high microwave frequencies with inexpensive components. The PRBS generator initially replaces the D flip-flops of a conventional PRBS generator with delay lines connected in a similar manner. Further, an exclusive OR (EXOR) gate used in a conventional device is replaced in one embodiment by a mixer and amplifier. In another embodiment, the EXOR gate is replaced by a Gilbert Cell. In some embodiments, complementary outputs of an EXOR gate are connected to separate delay lines to reduce components needed for the PRBS generator.
    • 伪随机比特序列(PRBS)发生器具有能够在非常高的微波频率下以便宜的组件进行操作的组件。 PRBS发生器最初用类似方式连接的延迟线代替常规PRBS发生器的D触发器。 此外,在一个实施例中,通过混频器和放大器替换在常规器件中使用的异或(EXOR)门。 在另一个实施例中,EXOR门由Gilbert Cell代替。 在一些实施例中,EXOR门的互补输出连接到单独的延迟线,以减少PRBS发生器所需的组件。