SWITCH AND ITS USAGE

A high−frequency line constituting a switcher (SW) is provided with a switch circuit. A plurality of switch circuits are provided per high−frequency line. Shunt circuits (S1, S2) are used for the switch circuits provided at the same point. Reliability is enhanced by providing a plurality of switch circuits at the same point and simultaneously distributing drive circuits by the switch circuit. Input−output isolation is enhanced by a multistaged constitution wherein a plurality of switch circuits are provided at different points of the same high−frequency line. The facilitation of operation with a decrease in maintenance chances and maintenance stuffs, miniaturization, low cost, and speed up are attained by use of semiconductor devices such as a PIN diode as the switching device in the switch circuit. Maintenance and handleability are improved by introduction of a U link comprising a unit of switching circuits and their peripheries with rigid lines. A high-frequency line constituting a switcher SW is provided with a switch circuit. A plurality of switch circuits are provided per high-frequency line. Shunt circuits S1, S2 are used for the switch circuits provided at the same point. Reliability is enhanced by providing a plurality of switch circuits at the same point and simultaneously distributing drive circuits by the switch circuit. Input-output isolation is enhanced by a multistaged constitution wherein a plurality of switch circuits are provided at different points of the same high-frequency line. The facilitation of operation with a decrease in maintenance chances and maintenance stuffs, miniaturization, low cost, and speed up are attained by use of semiconductor devices such as a PIN diode as the switching device in the switch circuit. Maintenance and handleability are improved by introduction of a U link comprising a unit of switching circuits and their peripheries with rigid lines. L'invention concerne une ligne haute fréquence ayant une fonction de commutateur (SW), équipée d'un circuit de commutation. Chaque ligne haute fréquence comprend une pluralité de circuits de commutation. Des circuits en parallèle (S1, S2) sont utilisés pour les circuits de commutation, au même point. L'utilisation d'une pluralité de circuits de commutation au même point et la répartition simultanée des circuits d'attaque par le circuit de commutation permettent d'améliorer la fiabilité globale. Un agencement multi-étagé permet d'obtenir une isolation en entrée et en sortie