TRANSIT TIME
Every electronic product with two or more terminals will have inter-electrodes capacitance across the terminals and inductance in series with the terminals. Both effects limit the usefullness of the device at high frequencies. Values of 2 pF and 0.02 μ are typical interelectrode reactances that erode the high-frequency signals.
Fig. 50.1 (a) The wave reflector system (WRS) (b) The dual-wave emission system (DES)
A second limitation is the time it takes for the electron to travel from one electrode to another electrode called the transit time. At microwave frequencies the time for one cycle of RF energy is often shorter than ...
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