Characteristics of Orotron Oscillation and Amplification. 1. Power and Frequency Characteristics.
Abstract
Power and frequency characteristics of orotron oscillation and amplification are derived from an equivalent circuit representation of the orotron. Feedback in the orotron (beam bunching) is represented by a negative conductance in parallel with a complex admittance representing the passive open resonator. This system is driven by a current source that represents either noise (Smith-Purcell radiation) in the oscillator mode or an external driver in the amplifier mode. Conditions for excitation of the orotron as an oscillator are derived, and the line width of the output radiation is computed below and above threshold. It is shown that the orotron acts as a linear amplifier below threshold and the product delta(o)(Ap) to 1/2 power remains constant as a function of beam current, where to 1/2 power is the half bandwidth of the device and (Ap) is the small-signal power gain. Amplification characteristics are investigated for excitation by a driver with a finite frequency spread. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1979
- Accession Number
- ADA074761
Entities
People
- Richard P. Leavitt
Organizations
- Harry Diamond Laboratories