Study on a discal TEM-TE{sub 11} mode converter loaded high-efficiency magnetically insulated transmission line oscillator

Journal Article · Tue Dec 15 00:00:00 EST 2015 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4936983· OSTI ID:22482659

Zhang, Xiaoping; Yuan, Chengwei; Li, Yangmei; Zhang, Jiande; Zhang, Qiang ^[1]

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1. College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073 (China)

An integrative high power microwave device is proposed, which consists of a high-efficiency L-band Magnetically Insulated Transmission Line Oscillator (MILO) and a discal TEM–TE{sub 11} mode converter. The MILO with a shrunken load composed of a step-like cathode and a ladder-like beam collector can generate a 1.58 GHz, 5.7 GW microwave with the efficiency of 20.8% at the diode voltage of 560 kV in simulation. The discal converter utilizes a pair of sectorial two-double radial waveguides and a pair of sectorial cross section waveguides to adjust the phase-difference and realizes the mode conversion in a length of less than half wavelength at 1.58 GHz. In the preliminary experiment, the proposed device generates over 2 GW, 1.575 GHz microwave with the pulse duration of over 50 ns in a 420 kV diode voltage; the corresponding efficiency is 14.9%; the radiation pattern is the ideal TE{sub 11} mode.

• OSTI ID: 22482659
• Journal Information: Review of Scientific Instruments, Vol. 86, Issue 12; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CATHODES
EFFICIENCY
ELECTRIC POTENTIAL
GHZ RANGE
LENGTH
MICROWAVE RADIATION
MODE CONVERSION
OSCILLATORS
PULSES
SIMULATION
TRANSMISSION ELECTRON MICROSCOPY
WAVEGUIDES