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Sheet beam is employed in THz devices as the beam offers an effective interaction with the RF signal. Sheet beam gun design is a challenge in achieving required flatness and laminarity over the length of RF-beam interaction. As per the published literature, sheet beam shape is obtained by using complicated shapes of cathode, BFE and anode. In the present work a planar gun geometry has been proposed...
A complete microwave characterization of the small-signal properties in terms of S-parameters behaviors of a flip-chip triode geometry device has been studied with CST simulator. The simulation results of a single triode and 10times10 triode array have been proposed.
Design and characterization of a new generation of single-photon avalanche diodes (SPAD) array, manufactured by ST-Microelectronics in Catania, Italy, are presented. Device performances, investigated in several experimental conditions and here reported, demonstrate their suitability in many applications. SPADs are thin p-n junctions operating above the breakdown condition in Geiger mode at low voltage...
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