Abstract
To achieve modular integration of relativistic triaxial klystron amplifier (TKA) devices and reduce the energy consumption of the whole high-power microwave (HPM) system, a compact Ku-band TKA packaged with permanent magnets is proposed and investigated in this paper. By optimizing the electromagnetic structure and utilizing TEM mode energy coupling, the length of the uniform magnetic field area required for the Ku-band TKA is reduced from 32 cm to 19.6 cm, with a reduction rate of 39%. By utilizing the NdFeB-N50M mainly magnetized in the <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">${R}$ </tex-math></inline-formula> direction, a permanent magnet guiding system weighing 90 kg is proposed. Besides, the length of the uniform zone is 20 cm with a longitudinal magnetic field of 0.5 T. Verified by the PIC simulation software CHPIC, an HPM with power of 430 MW and frequency of 14.25 GHz is generated when the diode voltage, current, and the injected microwave power are 340 kV, 4.2 kA, and 15 kW, respectively. The phase jitter of the output microwave is controlled within <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">${\pm } 5{^\circ }$ </tex-math></inline-formula> , which is beneficial to the coherent power combination of modular integrated TKA devices
Highlights
RELATIVISTIC triaxial klystron amplifier (TKA), with the advantages of high output power, stable frequency and controllable phase, is one of the most promising high-power microwave (HPM) generators for coherent power combination [1, 2]
To achieve modular integration of TKA devices, a compact Ku-band TKA packaged with permanent magnets is proposed and investigated in this paper
For an HPM modular integration system of TKA devices, the equivalent output power density can be improved by increasing the number of TKA modules, which means that the output power for a single TKA module does not need to be very high
Summary
RELATIVISTIC triaxial klystron amplifier (TKA), with the advantages of high output power, stable frequency and controllable phase, is one of the most promising high-power microwave (HPM) generators for coherent power combination [1, 2]. The electron beam in TKA devices is constrained by external electromagnetic solenoids These solenoids and their affiliated power supply systems and watercooling systems further increase the volume of a single TKA module. Replacing electromagnet solenoids with permanent magnets can eliminate the need of affiliated power supply systems and water-cooling systems for solenoids, which reduces the size of a single TKA module significantly, and brings down the energy consumption of the whole HPM system dramatically. To achieve modular integration of TKA devices, a compact Ku-band TKA packaged with permanent magnets is proposed and investigated in this paper. Color versions of one or more of the figures in this article are available online at http://ieeexplore.ieee.org.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
