4、Impedance 阻抗 5、Propagation Delay传输时延 6、Delay Skew 时延偏离 7、Insertion Lose插入损耗/Attenuation衰减 8、RL回波损耗(@主机、@远端) 9、NEXT近端串扰(@主机、@远端) 10、PS NEXT综合近端串扰(@主机、@远端) 11、ACR-N衰减近端串扰比(@主机、@远端) 12、PS ACR-N综合衰减近端串扰比(@主机...
2、时域定义 当信号线的传输延迟(propagation delay)大于1/4信号上升时间(rise time)的时候,该信号线就应视为传输线。 22、什么是微带线和带状线 1.微带线 参考平面(reference plane)只有一个。有些朋友认为微带线就是位于pcb表层的传输线。这种看法不全面。设想一种情形:一个多层板的第一和第二层都是信号层...
2、时域定义 当信号线的传输延迟(propagation delay)大于1/4信号上升时间(rise time)的时候,该信号线就应视为传输线。 22、什么是微带线和带状线 1.微带线 参考平面(reference plane)只有一个。有些朋友认为微带线就是位于PCB表层的传输线。这种看法不全面。设想一种情形:一个多层板的第一和第二层都是信号层...
A fine propagation time is derived using the phase shifts between the spread spectrum chirp signals. A frequency domain despreading window is shifted to reduce the influence of time-delayed near multipath signals in receiving the plurality of spread spectrum chirp signals.Schaffner, Terry M....
In particular, two packets with the same sequence number are synchronized, since they are from the same broadcast packet on the AP and thus received simultaneously, ignoring the insignificant propagation delay. In the case of packet loss, a null CSI is inserted. We would like to point out ...
多径传播(multipath propagation)与时延拓展(delay spread) 从发射端到接收端的电磁波有包括直线,反射等多种路径。不同的路径有不同的电长度,到达接收端的时间也不同,在接收端表现为“时延扩展”。迟到的信号可能干扰先到的信号,引起ISI。 一个载波的比特率越高,多径传播引起的ISI越严重。正交频分复用(OFDM)通过...
Propagation Delay: 5.06 nsec/meter Straight or Right Angle Max Attenuation (cable only): 1.4dB @ 1GHz for 1 meter Conductor Size: END 1 END 2 CONNECTOR 26 AWG, (0,48mm) .019" dia. Conductor Material: Copper Conductor Resistance: 0.14Ω/meter CABLE TYPE CONNECTOR ...
61 、The RF frequency, its propagation mode and the calculation of the electric field are analyzed.───基于隧道壁的特性以及接触网和轨道的存在,对于应用频率、传输模式、场的表示给出了符合实际的分析。 62 、This article describes how to diagnose the fault of aging medical lineal accelerator RF dri...
ans = Ray with properties: PathSpecification: 'Locations' CoordinateSystem: 'Geographic' TransmitterLocation: [3×1 double] ReceiverLocation: [3×1 double] LineOfSight: 1 Frequency: 2.8000e+10 PathLossSource: 'Custom' PathLoss: 104.2656 PhaseShift: 4.6406 Read-only properties: PropagationDelay: 4....
2.2.1.1 Frequency Bands and Applications S band radars operate on a wavelength of 8-15 cm and a frequency of 2-4 GHz which is less attenuated in propagation compared to other higher frequency bands. Lesser attenuation makes them useful for near and far range radars. The drawback to this ...