A TWT amplifier with a linear power transfer characteristic and improved efficiency
Abstract
A novel method called "Dynamic Velocity Taper' to linearize the Pout versus Pin transfer characteristic that does not require any extraneous circuitry or tuning, has large bandwidth capabilities ( 10 percent) and offers also an increase in the intrinsic traveling wave tube (TWT) efficiency by 1 to 2 dB is described. In addition, the method permits the TWT to be operated at or near the synchronous voltage (b plus or minus o) which produces a flat small and large signal gain responses and low AM to PM conversion. The physics of the method and experimental verification are given. The implementation should have a significant impact on TWT performance and increase the channel capacity of communication satellites.
- Publication:
-
Proposed for presentation at the 10th Commun. Satellite Systems Conf
- Pub Date:
- January 1984
- Bibcode:
- 1984css..conf...18K
- Keywords:
-
- Linearization;
- Phase Velocity;
- Transfer Functions;
- Traveling Wave Amplifiers;
- Traveling Wave Tubes;
- Communication Satellites;
- Efficiency;
- Electrons;
- Tapering;
- Velocity Distribution;
- Electronics and Electrical Engineering