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A dual-anode convergent electron gun with a perveance of 0.14 $\mu \text{p}$ has been designed and developed for a high-efficiency helix traveling-wave tube (TWT), which would ultimately have application in a satellite communication system. The electron gun with an isolated beam forming electrode and an M-type dispenser cathode of 3.1-mm button diameter has been designed using EGUN, OMNITRAK-3-D,...
The fabrication of multi-stage depressed collector for space TWTs involve several complexities due to the stringent space constraints imposed. Few common problems encountered are: (1) high voltage breakdown problems; (2) large size; (3) bulkier; (4) long fabrication time. In order to counteract these problems, single-ceramic technology has been used in the fabrication of the collector. Due to this,...
A dual anode electron gun has been designed using EGUN and TRAK codes for Ku-band 140 W short length space Traveling Wave Tube (TWT). Pierce type electron gun with an electrically isolated beam forming electrode (BFE), a control anode and an ion barrier anode (A0) in addition to ground has been opted. Due considerations have been given in the design of gun assembly to ensure the long life (>10...
In the recent decade there has been a growing interest of the researchers all over the world in the design and development of the high frequency (in terahertz range), moderate power and efficient devices based on MEMS (semiconductor) and vacuum electronics technologies. Development of so-called vacuum microelectronic devices (VMDs) for the mm and sub-mm wave devices surmount the limitations of conventional...
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