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    • 1. 发明授权
    • Low impedance series coupled radio frequency directional power detector
    • 低阻抗串联耦合射频定向功率检测器
    • US07977947B1
    • 2011-07-12
    • US11774972
    • 2007-07-09
    • David E. JonesDerek SchooleyNeal Mains
    • David E. JonesDerek SchooleyNeal Mains
    • G01R31/08
    • G01R21/07
    • The present invention is a low series impedance directional power detector, which may be used to measure either forward or reverse power in a radio frequency (RF) circuit. The directional power detector includes current detection circuitry to directionally measure current, voltage detection circuitry to measure voltage, and combining circuitry to combine the directional RF current measurements and the RF voltage measurements into a combined RF measurement, which is indicative of directional power. The current detection circuitry and voltage detection circuitry apply any phase-shifts that are needed to detect power in the direction of interest and ignore power in the opposite direction when the directional power detector is presented with a complex load.
    • 本发明是一种低串联阻抗定向功率检测器,其可用于测量射频(RF)电路中的正向或反向功率。 定向功率检测器包括用于定向测量电流检测电路以测量电压的电流检测电路,以及组合电路以将定向RF电流测量和RF电压测量结合成指示定向功率的组合RF测量。 电流检测电路和电压检测电路应用在方向功率检测器呈现复杂负载时,在感兴趣的方向上检测功率所需的任何相移,并忽略相反方向的功率。
    • 9. 发明授权
    • Auto loading device for data storage cartridges
    • 数据存储盒的自动装载装置
    • US07672077B2
    • 2010-03-02
    • US11478557
    • 2006-06-29
    • David E. Jones
    • David E. Jones
    • G11B15/68G11B17/22
    • G11B17/223G11B33/125
    • A vertical autoloader design enables multiple data cartridges to be selectively loaded into a drive while minimizing the device footprint. The structure of the vertical autoloader incorporates Geneva steps into the walls of the autoloader. The Geneva steps interface with gearing on a drive carriage to move the drive vertically. The data cartridges are inserted into slots on the front of the vertical autoloader, and the data cartridges not currently loaded into the drive can be removed and replaced while the autoloader is in operation. Further, the vertical autoloader includes prevent devices in the cartridge slots to ensure the data cartridges are loaded correctly.
    • 垂直自动装载机设计可以将多个数据盒带选择性地加载到驱动器中,同时最大限度地减少设备占用空间。 垂直自动装载机的结构将日内瓦步骤融入自动装载机的墙壁。 日内瓦步骤与驱动器托架上的传动装置接合,以垂直移动驱动器。 数据盒式磁带插入垂直自动装载机前面的插槽中,而当自动装载机运行时,可以取出并更换当前未装入驱动器的数据墨盒。 此外,垂直自动装载机包括防止盒槽中的装置确保数据盒被正确地装载。
    • 10. 发明授权
    • Active quadrature radio frequency power detector
    • 有源正交射频功率检测器
    • US07440734B1
    • 2008-10-21
    • US11348104
    • 2006-02-06
    • David E. JonesAndrew F. Folkmann
    • David E. JonesAndrew F. Folkmann
    • H03C1/62H04B17/00
    • G01R21/01H03G3/3042
    • The present invention is a quadrature RF power detector circuit, which is used in conjunction with a quadrature RF power amplifier to detect and combine RF signals from an in-phase amplifier leg and from a quadrature-phase amplifier leg to provide an RF power detection signal. The quadrature RF power detector circuit includes an emitter follower amplifier for each leg of the quadrature RF power amplifier and may include doubler circuitry to detect both half-cycles of an RF signal. The emitter follower detector provides power detection with minimal DC current and without significant RF loading at the point of detection, such as an RF interstage. This balanced detector also provides more accurate power detection under high VSWR conditions due to the quadrature action minimizing peaks and valleys in the detected voltage.
    • 本发明是正交RF功率检测器电路,其与正交RF功率放大器结合使用以检测和组合来自同相放大器支路和正交相位放大器支路的RF信号,以提供RF功率检测信号 。 正交RF功率检测器电路包括用于正交RF功率放大器的每个支路的射极跟随放大器,并且可以包括检测RF信号的两个半周期的倍频电路。 射极跟踪器检测器提供功率检测,具有最小的直流电流,并且在检测点(例如RF级间)没有显着的RF负载。 这种平衡检测器在高VSWR条件下也能提供更准确的功率检测,因为正交作用使检测到的电压中的峰值和谷值最小化。