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    • 4. 发明授权
    • Impedance measurement in an active radio frequency transmitter
    • 有源射频发射机中的阻抗测量
    • US08452245B2
    • 2013-05-28
    • US13412661
    • 2012-03-06
    • Brian Walker
    • Brian Walker
    • H03C1/62
    • H04B1/0458H04B17/10
    • A transmitter and method for determining impedance measurement in an active radio frequency transmitter of an antenna are provided. Voltage and current samples are obtained from a modulating signal delivered to an antenna. The voltage and current samples are converted from analog to digital format, and decimation occurs to reduce the number of samples. Complex demodulation is performed of each of the voltage and current samples to baseband levels and decimation of the voltage and current samples is performed to reduce the number of samples. An impedance estimate can then be estimated from the voltage and current samples.
    • 提供了一种用于确定天线的有源射频发射机中的阻抗测量的发射机和方法。 从传送到天线的调制信号获得电压和电流采样。 电压和电流样本从模拟转换为数字格式,并进行抽取以减少样本数量。 执行每个电压和电流采样到基带电平的复杂解调,并执行电压和电流采样的抽取以减少样本数量。 然后可以从电压和电流样本估计阻抗估计。
    • 7. 发明授权
    • Impedance measurement in an active radio frequency transmitter
    • 有源射频发射机中的阻抗测量
    • US08213885B2
    • 2012-07-03
    • US12421519
    • 2009-04-09
    • Brian Walker
    • Brian Walker
    • H03C1/62
    • H04B1/0458H04B17/10
    • A transmitter and method for determining impedance measurement in an active radio frequency transmitter of an antenna are provided. Voltage and current samples are obtained from a modulating signal delivered to an antenna. The voltage and current samples are converted from analog to digital format, and decimation occurs to reduce the number of samples. Complex demodulation is performed of each of the voltage and current samples to baseband levels and decimation of the voltage and current samples is performed to reduce the number of samples. An impedance estimate can then be estimated from the voltage and current samples.
    • 提供了一种用于确定天线的有源射频发射机中的阻抗测量的发射机和方法。 从传送到天线的调制信号获得电压和电流采样。 电压和电流样本从模拟转换为数字格式,并进行抽取以减少样本数量。 执行每个电压和电流采样到基带电平的复杂解调,并执行电压和电流采样的抽取以减少样本数量。 然后可以从电压和电流样本估计阻抗估计。
    • 10. 发明申请
    • REGENERATIVE ADSORPTION GAS DRYER
    • 再生吸附式气体干燥机
    • US20100212505A1
    • 2010-08-26
    • US12682719
    • 2008-10-13
    • Brian WalkerPeter Carney
    • Brian WalkerPeter Carney
    • B01D53/26B01D53/04
    • B01D53/261B01D2259/40001B01D2259/40003B01D2259/40086
    • A regenerative adsorption gas dryer has a wet gas inlet, first and second drying towers, and a dried gas outlet. The inlet, towers and outlet are arranged such that, in use, a flow of purge gas regenerates an off-stream one of the towers, while a stream of wet gas from the wet gas inlet enters an on-stream one of the towers to exit that tower as a stream of dried gas which then continues to the dried gas outlet. The roles of the off-stream and on-stream towers are reversible. The dryer further has a first check valve for controlling a stream of dried gas between the first drying tower and the dried gas outlet, and a second check valve for controlling a stream of dried gas between the second drying tower and the dried gas outlet.
    • 再生吸附式气体干燥器具有湿气入口,第一和第二干燥塔以及干燥气体出口。 进口,塔和出口被布置成使得在使用中,净化气体流再生塔的一个离岸塔,而来自湿气入口的湿气流将进入塔内的一个流入塔 将该塔作为干燥气体流,然后继续进行干燥的气体出口。 离线和视频塔的角色是可逆的。 干燥器还具有用于控制第一干燥塔和干燥气体出口之间的干燥气体流的第一止回阀和用于控制第二干燥塔和干燥气体出口之间的干燥气体流的第二止回阀。