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This paper proposes a new configuration for power oscillator based on the combined power amplifier. The focus is on power combining as a oscillator structure with a positive feedback loop line. The proposed configuration consists of a harmonic-tuned combined power amplifier using two Gallium Nitride High Electron Mobility Transistors (CGH40025), 3dB Wilkinson divider/combiner, a directional coupler,...
The 3-D particle-in-cell (PIC) simulations of a Ka-band coupled-cavity traveling-wave tube (CCTWT) are shown. The computational analysis of the Ka-band coupled-cavity slow-wave structure was conducted through the use of an electromagnetic PIC code MAGIC3D. The choice of a double-slot staggered RF cavity circuit was made because of a wide frequency bandwidth, moderate interaction impedance, and excellent...
This paper focuses on PIC simulations of Ka-band, double-slot staggered coupled-cavity TWT. The coordinate system used in the simulation is a rectangular coordinate system (x, y, z). The paper shows a MAGIC3D model of a double-slot staggered CCTWT circuit. Coupling slots are cut into the wall to separating the cavities. There are two slots rotated 180 degrees about the beam axis in the same wall....
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