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Electric field enhancement and power absorption in microwave TR-switches

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3 Author(s)
Semenov, V. ; Inst. of Appl. Phys., Acad. of Sci., Nizhny Novgorod, Russia ; Lisak, M. ; Anderson, D.

An analytical and numerical investigation is made of electric field enhancement due to scattering of an incident plane wave by a biconical conductor. An application to microwave transmit-receive switches (TR) shows that field enhancement factors of the order of 20 to 40 are to be expected in the region close to the keep-alive contacts. An analysis of the microwave absorption by a small plasma sphere located in the vertex of the biconical conductor is also presented, showing that the plasma sphere absorbs a significant fraction of the incident power independently of the plasma size. This explains the observed absorption properties during the turn-on phase of TR switches

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:43 ,  Issue: 2 )