Power Combiner for High Power Cerenkov Devices

Two Cherenkov devices are effectively combined using a circular waveguide T-junction in a simulation study. The microwave sources are driven by the same high voltage pulser to prevent phase difference at the output of the power combiner. This passive power combiner not only combines the microwave po...

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Bibliographic Details
Published in:IEEE transactions on plasma science 2016-10, Vol.44 (10), p.2268-2271
Main Authors: Elfrgani, Ahmed, Seidfaraji, Hamide, Yurt, Sabahattin C., Fuks, Mikhail I., Schamiloglu, Edl
Format: Article
Language:English
Subjects:
Couplings
Electric breakdown
Electric currents
Energy efficiency
Gaussian radiation
high power microwave (HPM)
Microwave imaging
Microwave oscillators
microwave power combiner/divider
mode converter
multimode circular waveguide
Normal distribution
Power combiners
Power generation
relativistic backward wave oscillator (RBWO)
Simulation
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Summary:Two Cherenkov devices are effectively combined using a circular waveguide T-junction in a simulation study. The microwave sources are driven by the same high voltage pulser to prevent phase difference at the output of the power combiner. This passive power combiner not only combines the microwave power, but also outputs a Gaussian beam when a TM 01 mode is used as the input. An efficient serpentine mode converter has been used as the basis of the power combiner design where the fields sum up at the common section of the two mode converters. A combined summation/conversion efficiency was ~90% when the output power was more than 1.8 times the input power with a Gaussian output pattern. The combined microwave power was more than 600 MW at 10.2 GHz.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2016.2601015