Bifrequency Magnetically Insulated Transmission Line Oscillator

Chen, Dai-Bing; Wang, Dong; Fanbao, Meng; Fan, Zhongwei

doi:10.1109/tps.2008.2007731

Cited by 41 publications

(21 citation statements)

References 8 publications

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“…This SWS is designed originally according to the working principle of a bifrequency MILO, [7][8][9] and has been modified to make it applicable in RBWOs. The original structure parameters are close to those in.…”

Section: Design Of the Swsmentioning

confidence: 99%

X band bifrequency coaxial relativistic backward wave oscillator

et al. 2011

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An idea of azimuthally dividing the slow wave structure (SWS) of a relativistic backward wave oscillator (RBWO) into two parts is introduced to realize a bifrequency oscillation. To enhance the stability of this device, two sectorial waveguides are inserted into the SWS specially. The synchronization condition that is necessary to get a sustainable microwave output is derived. In Particle in cell simulation, bifrequency microwave at frequencies of 9.7 GHz and 9.87 GHz is generated with average power of 0.66 GW, conversion efficiency is 15.8% when beam voltage is 520 kV and current 8 kA

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Section: Design Of the Swsmentioning

confidence: 99%

X band bifrequency coaxial relativistic backward wave oscillator

et al. 2011

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“…Significant progress had been achieved in pursuing high power, high efficiency, high-power microwave (HPM) devices (Chen et al, 2002;Eltchaninov et al, 2003;Li et al, 2010;Xiao et al, 2010;Zhang et al, 2010), and the study of HPM relativistic Cherenkov oscillators with the capability of generating dual and multiple microwave frequencies simultaneously in one beam shot is becoming a novel and attractive topic recently (Chen et al, 2009;Ginzburg et al, 2003a;2003b;He et al, 2011;Ju et al, 2009;Ryskin et al, 2001;Tang et al, 2012;Wang et al, 2010;Yang et al, 1999), for the radiation beating radio-frequency waves could be used for electronic warfare systems, and various communication and sounding systems. Chen et al (2009) investigated the dual-frequency magnetically insulated transmission line oscillator (MILO) with azimuthal partition operating at L-band, the particle-in-cell (PIC) simulation results indicated that the power conversion efficiency was only about 8.1%.…”

Section: Introductionmentioning

confidence: 99%

“…Chen et al (2009) investigated the dual-frequency magnetically insulated transmission line oscillator (MILO) with azimuthal partition operating at L-band, the particle-in-cell (PIC) simulation results indicated that the power conversion efficiency was only about 8.1%. Yang et al (1999) designed a T-type structured dual-band Cherenkov oscillator with a relativistic orotron and a relativistic backward-wave oscillator (RBWO), the radiation microwave signals traveled perpendicular to each other, operating at Ka-band and X-band, respectively.…”

Section: Introductionmentioning

confidence: 99%

Design of a high-efficiency dual-band coaxial relativistic backward wave oscillator with variable coupling impedance and phase velocity

Tang

Meng

et al. 2012

Laser Part. Beams

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A dual-band high-efficiency coaxial relativistic backward wave oscillator (CRBWO) with asymmetric resonant reflector is designed and presented in this paper. Improved sectioned coaxial slow wave structure (SWS) with stepwise variation of coupling impedance and phase velocity is employed, and the performance of the dual-band CRBWO is investigated by use of a 2.5-D particle-in-cell (PIC) simulation code. When the diode voltage is 510 kV and beam current is 9.03 kA, an average microwave power of 1.0 GW with power conversion efficiency of 21.7% is obtained. Synchronously radiating dual-band frequencies of 8.1 GHz and 9.9 GHz are obtained, corresponding to C-band and X-band, respectively. A more clear and stable beating radiation microwave power with beating frequency of 1.8 GHz is acquired.

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“…With the rapid progress of HPM technologies in recent years, HPMs with dual output frequencies are becoming more and more attractive and can be considered an enhancement in the spectrum of HPMs. [2][3][4][5][6][7] This is perhaps because dual-frequency HPMs have the following advantages. First, microwaves with different frequencies can be generated simultaneously at one burst, which is a huge advancement in comparison of the conventional HPMs with a single frequency.…”

Section: Introductionmentioning

confidence: 99%

“…Second, in properly designed dualfrequency HPMs, only one wideband antenna, such as a ridged antenna, 8 is needed as the radiation system, so the whole system will be compact. At present, dual-frequency MILOs have been investigated by several researchers [2][3][4] but only a few dual-frequency RBWOs have been reported. 6,9 Therefore, in this paper, two types of dual-band RBWOs, which generate dual-frequency microwaves of different wave bands, are designed based on single and dual annular beams.…”

Section: Introductionmentioning

confidence: 99%

Dual-band relativistic backward wave oscillators based on a single beam and dual beams

Ting,

Jian-de,

Bao-liang

et al. 2010

Physics of Plasmas

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Two types of relativistic backward wave oscillators ͑RBWOs͒ used to produce dual-band microwaves are proposed and investigated by use of the particle-in-cell ͑PIC͒ simulation code KARAT ͓V. P. Tarakanov, User's Manual for Code Karat ͑Berkeley Research Associates, Springfield, VA, 1992͔͒. The first type of RBWO, for generation of C-band and X-band microwaves, is designed based on a single beam and a sectioned structure. With an electron beam of 650 keV and 5.0 kA guided by a magnetic field of 2.0 T, an average power of 380 MW with a total power conversion efficiency of 11.7% is obtained and the frequencies are 5.48 and 9.60 GHz, respectively. By changing the distance between the two sections, single-band oscillations are realized with higher power conversion efficiency than that of the dual-band oscillation. The second type, based on a coaxial structure and dual parallel annular beams, is a dual-band RBWO designed with separated beam-wave interaction regions for generation of C-band and X-band microwaves. With a dual beam of 650 keV and 11.8 kA ͑the outer beam current is 6.4 kA and inner beam current is 5.4 kA͒ guided by a magnetic field of 2.0 T, an output power of 1400 MW with a total power conversion efficiency of 18.3% is generated and the frequencies are 4.60 and 8.40 GHz, respectively. PIC simulations demonstrate that the two beam-wave interaction regions operate independently. The two types of dual-band RBWO are also compared and analyzed.

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Bifrequency Magnetically Insulated Transmission Line Oscillator

Cited by 41 publications

References 8 publications

X band bifrequency coaxial relativistic backward wave oscillator

X band bifrequency coaxial relativistic backward wave oscillator

Design of a high-efficiency dual-band coaxial relativistic backward wave oscillator with variable coupling impedance and phase velocity

Dual-band relativistic backward wave oscillators based on a single beam and dual beams

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