Two-stage dielectric-loading for broadbanding a gyro-TWT
- Resource Type
- Periodical
- Authors
- Rao, S.J.; Jain, R.; Basu, B.N.
- Source
- IEEE Electron Device Letters IEEE Electron Device Lett. Electron Device Letters, IEEE. 17(6):303-305 Jun, 1996
- Subject
- Engineered Materials, Dielectrics and Plasmas
Components, Circuits, Devices and Systems
Dielectrics
Electromagnetic waveguides
Bandwidth
Magnetic fields
Wideband
Frequency
Performance gain
Dispersion
Propagation constant
Broadband amplifiers
- Language
- ISSN
- 0741-3106
1558-0563
A scheme of dielectric-loading for a gyro-traveling wave tube (gyro-TWT) is proposed for a wider bandwidth at a higher gain. The method uses two-section dielectric-loaded cylindrical waveguide as the interaction structure, with the first section overloaded to exhibit a valley between the two peaks in the gain-frequency response, while the other suitably loaded to exhibit a single peak centered at the valley so as to yield an overall wideband response. A bandwidth /spl sim/8.8% at a relatively high small-signal gain /spl sim/30 dB is predicted.