会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明申请
    • Wireless communication system using surface acoustic wave (SAW) second harmonic techniques
    • 无线通信系统采用声表面波(SAW)二次谐波技术
    • US20050059357A1
    • 2005-03-17
    • US10946420
    • 2004-09-21
    • Peter EdmonsonColin Campbell
    • Peter EdmonsonColin Campbell
    • G01S13/75H03H9/00H03H9/64H01P5/08H01L41/04H01L41/08H01L41/18H02N2/00H03H7/38H04B1/40
    • H03H9/6406G01S13/755H03H9/0028H03H9/0042
    • SAW devices such as interdigital transducers (IDTs) have been widely used in RADAR applications and as filters. An IDT produces a SAW when excited by a single electrical pulse and can be fabricated to embody a code, which code provides for a passive autocorrelation of a SAW input to the IDT and thereby lends itself to further application as a signal generator in a communication device. However, internal dimensions of IDTs are inversely proportional to operating frequency, such that high frequency IDTs present significant manufacturing difficulties. Fabrication of IDTs for high frequency applications is simplified by exploiting a harmonic frequency SAW generated by IDTs. An IDT may therefore be designed according to fundamental frequency internal dimension criteria but can operate at a multiple of the fundamental frequency, thereby providing much higher frequency operation than conventional SAW systems. A communication system based on SAW harmonic techniques would be low-cost, low-power, small and simple alternative to known short range communications schemes, including for example the Bluetooth™ solution. Operation of a second harmonic SAW system at 2.4 GHz based on a fundamental frequency of 1.2 GHz is contemplated.
    • 诸如叉指式换能器(IDT)之类的SAW器件已被广泛应用于雷达应用和滤波器。 IDT在由单个电脉冲激励时产生SAW,并且可以被制造为体现代码,该代码提供SAW输入到IDT的无源自相关,从而使其进一步用作通信设备中的信号发生器 。 然而,IDT的内部尺寸与操作频率成反比,使得高频IDT存在显着的制造困难。 通过开发由IDT产生的谐波频率SAW,可以简化高频应用的IDT的制作。 因此,IDT可以根据基本频率内部尺寸标准设计,但是可以以基频的倍数工作,从而提供比常规SAW系统高得多的频率操作。 基于SAW谐波技术的通信系统将是低成本,低功率,小而简单的替代已知的短距离通信方案,包括例如Bluetooth TM解决方案。 考虑到基于1.2GHz的基频的2.4GHz的二次谐波SAW系统的操作。
    • 2. 发明申请
    • Surface acoustic wave sensor or identification device with biosensing capability
    • 表面声波传感器或具有生物传感能力的识别装置
    • US20060000285A1
    • 2006-01-05
    • US11139477
    • 2005-05-31
    • Peter EdmonsonColin CampbellWilliam Hunt
    • Peter EdmonsonColin CampbellWilliam Hunt
    • G01N29/00
    • G01N29/022G01N2291/0256G01N2291/0422G01N2291/0423H03H9/14552H03H9/6406
    • A surface acoustic wave sensor or identification device has a piezoelectric material, and an interdigitated transducer (IDT) input/output mounted on the piezoelectric material for receiving a radio frequency (RF) signal and propagating a corresponding surface acoustic wave along a surface of the piezoelectric material. An IDT finger electrode array is mounted on the piezoelectric material and is operable to communicate with the IDT input/output for transmission of a modified RF signal from the device. The IDT finger electrode array has at least one finger electrode segment whose propagating characteristics are controlled to control the nature of the modified RF signal. A biolayer is mounted on the piezoelectric material and is associated with the finger electrode segment, and a fluidic chamber is associated with the biolayer. In use, the fluidic chamber contains fluid which, if a predetermined substance to be sensed or detected is present, operates to modify the biolayer which in turn controls the nature of the modified RF signal.
    • 表面声波传感器或识别装置具有压电材料和安装在压电材料上的交错式传感器(IDT)输入/输出,用于接收射频(RF)信号并沿着压电体的表面传播对应的声表面波 材料。 IDT手指电极阵列安装在压电材料上,并且可操作以与IDT输入/输出通信,用于传输来自装置的经修改的RF信号。 IDT手指电极阵列具有至少一个手指电极段,其传播特性被控制以控制经修改的RF信号的性质。 生物层安装在压电材料上并与指状电极段相关联,并且流体室与生物层相关联。 在使用中,流体腔室含有流体,如果存在要检测或检测到的预定物质,则操作以改变生物层,其继而控制经修改的RF信号的性质。
    • 3. 发明申请
    • WIRELESS COMMUNICATION SYSTEM USING SURFACE ACOUSTIC WAVE (SAW) SECOND HARMONIC TECHNIQUES
    • 使用表面声波(SAW)的无线通信系统第二和谐技术
    • US20080020709A1
    • 2008-01-24
    • US11863330
    • 2007-09-28
    • Peter EdmonsonColin Campbell
    • Peter EdmonsonColin Campbell
    • H04B7/00H04M1/00H04Q7/20
    • H03H9/6406G01S13/755H03H9/0028H03H9/0042
    • An IDT produces a SAW when excited by a single electrical pulse and can be fabricated to embody a code, which code provides for a passive autocorrelation of a SAW input to the IDT and thereby lends itself to further application as a signal generator in a communication device. However, internal dimensions of IDTs are inversely proportional to operating frequency, such that high frequency IDTs present significant manufacturing difficulties. Fabrication of IDTs for high frequency applications is simplified by exploiting a harmonic frequency SAW generated by IDTs. An IDT may therefore be designed according to fundamental frequency internal dimension criteria but can operate at a multiple of the fundamental frequency, thereby providing much higher frequency operation than conventional SAW systems. Operation of a second harmonic SAW system at 2.4 GHz based on a fundamental frequency of 1.2 GHz is contemplated.
    • IDT在由单个电脉冲激励时产生SAW,并且可以被制造为体现代码,该代码提供SAW输入到IDT的无源自相关,从而使其进一步用作通信设备中的信号发生器 。 然而,IDT的内部尺寸与操作频率成反比,使得高频IDT存在显着的制造困难。 通过利用由IDT产生的谐波频率SAW来简化高频应用的IDT的制作。 因此,IDT可以根据基本频率内部尺寸标准设计,但是可以以基频的倍数工作,从而提供比常规SAW系统高得多的频率操作。 考虑到基于1.2GHz的基频的2.4GHz的二次谐波SAW系统的操作。
    • 7. 发明授权
    • Fast switching for power inverter
    • 电源逆变器快速开关
    • US08760898B2
    • 2014-06-24
    • US13018387
    • 2011-01-31
    • Ryan KroezeColin CampbellNicholas Robert Kalayjian
    • Ryan KroezeColin CampbellNicholas Robert Kalayjian
    • H02M7/538
    • H02M7/487
    • An apparatus includes an inverter including a high-side switch coupled to a low-side switch, the inverter generating a time-varying drive current from a plurality of drive control signals, a positive rail voltage, and a negative rail voltage wherein controlling the switches to generate the time-varying drive current produces a potential transitory overshoot condition for one of the switches of the inverter; a drive control, coupled to the inverter, to generate the drive control signals and to set a level of each of the rail voltages responsive to a plurality of controller signals; and a controller monitoring one or more parameters indicative of the potential transitory voltage overshoot condition, the controller dynamically adjusting, responsive to the monitored parameters, the controller signals to reduce a risk of occurrence of the potential transitory voltage overshoot condition.
    • 一种装置包括:逆变器,包括耦合到低侧开关的高侧开关,所述逆变器从多个驱动控制信号,正轨电压和负轨电压产生时变驱动电流,其中控制开关 以产生时变驱动电流产生逆变器的一个开关的潜在的瞬时过冲条件; 驱动控制,耦合到所述逆变器,以产生所述驱动控制信号,并响应于多个控制器信号设置每个所述轨电压的电平; 以及控制器,其监测指示潜在的瞬时电压过冲条件的一个或多个参数,所述控制器响应于所监视的参数动态地调整所述控制器信号以减少所述潜在的瞬时电压过冲状况的发生的风险。