NDLI: Research activities on high-power microwave sources in National University of Defense Technology of China

Content Provider	IEEE Xplore Digital Library
Author	Jiande Zhang Xingjun Ge Jun Zhang Juntao He Yuwei Fan Zhiqiang Li Zhenxing Jin Liang Gao Junpu Ling Zumin Qi
Copyright Year	2015
Description	Author affiliation: Lab. of High Power Microwave Technol., Nat. Univ. of Defense Technol., Changsha, China (Jiande Zhang; Xingjun Ge; Jun Zhang; Juntao He; Yuwei Fan; Zhiqiang Li; Zhenxing Jin; Liang Gao; Junpu Ling; Zumin Qi)
Abstract	Research activities on High-power microwave (HPM) sources in National University of Defense Technology (NUDT) of China are presented. The research issues are focused on following aspects. (1) Suppression of pulse-shortening phenomenon in O-type Cerenkov HPM devices. (2) Enhancement of the power efficiency in M-Type HPM tubes without guiding magnetic field. (3) Enhancement of the power efficiency in Space-charge device with multi-cavity. (4) Development of the compact coaxial relativistic backward-wave oscillator (RBWO) at low bands. (5) Enhancement of the power capacity and power efficiency in triaxial klystron amplifier (TKA) at higher frequencies. (6) Enhancement of the power capacity and power efficiency in relativistic transit-time oscillator (TTO) at higher frequencies. In experiments, some exciting results were obtained. The X-band source generated 2GW microwave power with pulse duration of 110ns in 30Hz repetition mode. A 1.755GHz MILO produced 3.1GW microwave power with power efficiency of 10.4%. Furthermore, the experimental waveforms for a 10 pulse, 2Hz shot series are obtained. A 4.1GHz multi-cavity VCO produced 1GW microwave power with power efficiency of 6.6%. Both L- and P-band compact RBWOs generated over 2GW microwave power with power efficiency of over 30%. There is approximately a 75% decline of the volume compared with that of conventional RBWO under the same power level. A 9.37GHz RKA produced the 240MW microwave power with the gain of 34dB. A 14.3GHz TTO produced 1GW microwave power with power efficiency of 20%.
Starting Page	1
Ending Page	20
File Size	2815020
Page Count	20
File Format	PDF
e-ISBN	9781479984039
DOI	10.1109/PPC.2015.7297023
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-05-31
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Decision support systems Neck transit-time oscillator (TTO) High-power microwave (HPM) long-pulse O-type Cerenkov source magnetically insulated line oscillator (MILO) virtual cathode oscillator (VCO) coaxial relativistic backward-wave oscillator (RBWO) triaxial klystron amplifier (TKA)
Content Type	Text
Resource Type	Article

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Frequency Control of a Klystron-Type Relativistic Cerenkov Generator

Successful Suppression of Pulse Shortening in an $X$ -Band Overmoded Relativistic Backward-Wave Oscillator With Pure $mathrm{TM}_{01}$ Mode Output

Analysis of Electromagnetic Pulse Effects Under High-Power Microwave Sources

Experimental Study on X-band Relativistic Backward Wave Oscillator (RBWO)

Experimental Study on 100MW X-band Relativistic Backward Wave Oscillator

Bifrequency Magnetically Insulated Transmission Line Oscillator

Bifrequency HPM Generation in a MILO With Azimuthal Partition

Experimental Study on Dynamics of Mode Competition in Magnetically Insulated Transmission Line Oscillator (MILO)

Power estimation of electromagnetic coupling effectiveness by a X-band backward wave oscillator with mode conversion

Research activities on high-power microwave sources in National University of Defense Technology of China

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