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In both Ar and air, UV radiation increases the localization of the radionuclides in the bubblers, simultaneously decreasing practically by half the amount of 137Cs penetrating across the combined filter.
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The hypotheses were not valid for smaller bream as these acted as particulate or combined filter- and particulate feeders.
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Calculation of the duration of the drying step in combined filter-dryer equipment
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A combined filter membrane for the separation of crystals of prednisone from culture fluid
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As the centroid approach is not applicable for partial similarity search, we cannot use the combined filter for this purpose.
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In view of reasonable explanation of intermittent subharmonics and chaos that can be gained from coupling filter between circuits, this paper discusses a method that maps time bifurcation with parameter bifurcation.
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| Alongside the growth of power supply in 220kV network in Anhui province (jn China) .intermediate substations were set up on several long transmission lines, thus breaking the whole line into shorter ones. Correspondingly, the number of double circuit lines increased.with regard to power line carrier communication, the number of broad band width line traps and coupling filters installed at terminals and intermediate bridging circuits should also increase. As a result, the quality of carrier channel declined.... Alongside the growth of power supply in 220kV network in Anhui province (jn China) .intermediate substations were set up on several long transmission lines, thus breaking the whole line into shorter ones. Correspondingly, the number of double circuit lines increased.with regard to power line carrier communication, the number of broad band width line traps and coupling filters installed at terminals and intermediate bridging circuits should also increase. As a result, the quality of carrier channel declined. In bad weather condition, the PLC communication may be interrupted.This paper makes a survey of the causes of the increase of Overall attenuation of PLC channel due to the change of line configuration, For this purpose, the following factors are analyzed in delail:(1) the mismatch between input and load impedances dut to the shortening of direct transmission distance, (2) terminal states (in overhaul or cold stand by vs.in operation); (3) the operation mode of double-circuit lines; (4)the effect of broad baudwidth line traps and coupling filter. | 随着220千伏电网供电密度的扩大,在一些长距离的输电线路上多处开断,新建了一些中间变电所,线路距离变短。平行(或同杆)架设的输电线路也相应增多。在网络结线复杂的220千伏线路上组建载波通道,终端和中间桥路所采用的宽频结合加工设备(指阻波器和结合滤波器)数量随之增多。由电网结线变化所产生的电气短线、线路终端状态、平行线路运行方式的变化和宽频结合加工设备附加衰耗对载波通道总衰耗的影响,致使部分电路的实际通道衰耗远远超过了计算值。造成电路质量和运行可靠性下降。在恶劣的气候条件下,甚至会中断通信电路。针对这种情况,我们结合近年来的220千伏线路载波通道的运行实践,对电网结线变化所造成的载波通道总衰耗普遍增大的几个因素进行了分析。 | In order to obtain high out-of-band rejection,a filter struccture has been designed,which combines single phase unidirectional transducer(SPUDT)with mirror impedance connection transducer.The structure consists of double paths and each path is composed of a EWC apodized weighting transducer and a withdrawal weighting transducer.The structure bas the advantanges of high out-of-banb rejection, small loss, small size and easy manufacture, and overcomes the prob-lems of large loss and match difficult caused by cascade... In order to obtain high out-of-band rejection,a filter struccture has been designed,which combines single phase unidirectional transducer(SPUDT)with mirror impedance connection transducer.The structure consists of double paths and each path is composed of a EWC apodized weighting transducer and a withdrawal weighting transducer.The structure bas the advantanges of high out-of-banb rejection, small loss, small size and easy manufacture, and overcomes the prob-lems of large loss and match difficult caused by cascade connection for conventional SAW filters.At last,the results of the SAW filter with high out-of-band rejection are given with the oenter fre-quency of 70MHz,bandwidth of 1.5MHz,out-of-band>70dB,insertion loss<13dB,the size of chip<5mm×10mm | 为了获得高的带外抑制，我们设计了一种单相单向换能器与镜像阻抗连结换能器结合的滤波器结构。该结构由双通道组成，每通道上由一个电级宽度控制单相单向端变迹加权换能器和一个抽指加权换能器组成，它具有带外抑制高、插损小、体积小和制作容易等优点，克服了常规滤波器级联带来的插损大，难匹配的问题。最后给出了我们制作在１２７．８６°Ｙ－ＸＬｉＮｂＯ＿３基片上的高带外抑制声表面波滤波器结果，其中心频率为７０ＭＨｚ，带宽为１．５ＭＨｚ，带外抑制大于７０ｄＢ，插损小于１３ｄＢ，芯片尺寸小于５ｍｍ×１０ｍｍ。 | This paper discussed the uniform under-sampling of multiple bandpass signals in digital receiver. For these multiple real or complex bandpass signals having arbitrary band position and bandwidth, the acceptable sampling rate has been given. Using this sampling rate to sample the input bandpass signal, an efficient data compression can be gotten. In the same time using band pass filter, these multiple bandpass signals can be transferred to the lower frequency. Finally, an example is given to show the correctness... This paper discussed the uniform under-sampling of multiple bandpass signals in digital receiver. For these multiple real or complex bandpass signals having arbitrary band position and bandwidth, the acceptable sampling rate has been given. Using this sampling rate to sample the input bandpass signal, an efficient data compression can be gotten. In the same time using band pass filter, these multiple bandpass signals can be transferred to the lower frequency. Finally, an example is given to show the correctness of the uniform sampling method of multiple bandpass signals. | 该文讨论了宽带数字接收机中对多个复或实的带通信号的直接均匀采样。对这多个通带位置及带宽均是任意的实或复的带通信号给出了采样率应满足的关系,用此采样率采样使输入数据得到有效的压缩,同时结合滤波器将频谱进行搬移,最后给出了实例。 | | | | << 更多相关文摘 |
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结合滤波器
combined filter
查询“结合滤波器”译词为用户自定义的双语例句
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