Title :
GHz modulation of carbon nanotube cathodes for microwave amplifiers
Author :
Legagneux, P. ; Minoux, E. ; Hudanski, L. ; Teo, K. ; Griening, O. ; Peauger, F. ; Dieumegard, D. ; Schnell, J.P. ; Gangloff, L. ; Amaratunga, G.A.J. ; Milne, W.I.
Author_Institution :
Thales R&T, Orsay, France
Abstract :
Cold cathodes based on carbon nanotubes (CNs) allow to produce a pulsed/directly modulated electron beam. Using an array of vertically aligned CNs that exhibit an aspect ratio of around 200, we demonstrated the modulation of a 1.5 A/cm2 beam at 1.5 GHz frequency. Such CN cathodes are very promising for their use in a new generation of compact and low cost microwave amplifiers that operates between 30 and 100 GHz.
Keywords :
carbon nanotubes; cathodes; electron beams; microwave amplifiers; nanotechnology; nanotube devices; vacuum microelectronics; 1.5 GHz; 30 to 100 GHz; C; GHz modulation; aspect ratio; carbon nanotube cathodes; cold cathodes; microwave amplifiers; modulated electron beam; Carbon nanotubes; Cathodes; Costs; Electron beams; Frequency; Microwave amplifiers; Microwave generation; Optical modulation; Pulse amplifiers; Pulse modulation;
Conference_Titel :
Nanotechnology, 2005. 5th IEEE Conference on
Print_ISBN :
0-7803-9199-3
DOI :
10.1109/NANO.2005.1500670
