As data rates continue increasing, controlled impedance applies to an expanding range of chip-to-chip nets. Constraint driven trace width, spacing and layer planning facilitate quality high-speed signaling. FAQ Why is impedance matching important? Impedance matching means source, transmission line and ...
Microphone signals are AC voltages. Impedance is the “AC resistance” of audio signal voltages. Impedance controls the flow of the audio signal.In order for a mic signal to travel optimally, the microphone output impedance must “match” or “bridge” the input impedance (load impedance) of i...
As it turns out, the voltage value is of less importance; either you’re worried about carrying power, minimizing loss, or trying to balance the two. Low-cost coaxial cables with air or low-Dk dielectric filler can shoot for 77 Ohm impedance for long cables runs, but the reason for roun...
Impedance: What it is, and why it must be matched All probes in NMR spectrometers must be "tuned" and "matched" to obtain optimum sensitivity. In the simplest electronic circuits, tuning and matching are a... Daniel,D.,Traficante - 《Concepts in Magnetic Resonance》 被引量: 80发表: 1989...
PCB materials, dielectric constant, trace height and width affect the controlled impedance of a transmission line.
They offer impedance matching: The impedance of various circuit components may be matched using passive components. To ensure that the most power is delivered from the source to the amplifier, a transformer can be employed, for instance, to match the impedance of an audio signal to the input ...
aThe membrane resistance was obtained by extrapolating the linear part of the spectra to the real axis of the impedance 膜抵抗通过外推光谱的线性部分获得对阻抗的真正的轴 [translate] a一方面,物流需求预测是物流系统规划中的重要环节,为制定物流发展政策、确定物流基础设施建设规模、分析物流市场态势提供了...
SOS Technical Editor Hugh Robjohns replies: It’s the ‘characteristic impedance’ of the cable, and the value is specified because it’s important for the driver and receiver at each end of the cable to have the same (matching) impedances. If they are not correctly matched, the interface...
The only way you get a reflected signal is when the incident signal encounters a change in the impedance somewhere along its path. It’s the combination of reflections from every discontinuity that contributes to the return loss at each frequency. ...
This model type represents an output buffer that is not only represented in its driving high and driving low state, but also in its high impedance state, since this type of buffer can be disabled. As with an output model type, it also includes the timing test ...