| 摘要 |
<p>A switching matrix for telecommunication, with change-over switches which can be used both for analog and digital signal transmission. The change-over switch is designed in the form of an amplifier with a control stage and an output stage. The output stage has the configuration of a push-pull stage with two coupled emitters which is connected directly to the supply voltage, allowing the ever present capacitive load of the switch to be charged and discharged rapidly. Also the Miller effect of the internal base-selector capacitance is absent. Consequently, a large frequency range (to approximately 3 GHz) is realized for analog use, whilst for digital use a switch rate of the order of 2 Gb/s is attainable.</p> |
