Phase locking of high-power microwave oscillators

Woo, W.; Benford, James; Fittinghoff, D. N.; Harteneck, B.; Price, David L.; Smith, R. R.; Sze, H.

doi:10.1063/1.343079

Cited by 81 publications

(22 citation statements)

References 7 publications

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“…The locked phase difference between the oscillators occurs in two modes: zero-phase difference and /r-phase difference, depending on the connector length. 8 In our experiment r = 5AX and 8.5>, in the K and In modes, respectively. In both cases ~180° phase difference is observed.…”

supporting

confidence: 47%

Phase Locking of Relativistic Magnetrons

Benford¹,

Sze²,

Woo³

et al. 1989

Phys. Rev. Lett.

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143

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Phase locking of relativistic magnetrons has been achieved at power levels of ~3 GW at 2.8 GHz, exceeding previous phase-locking power levels by 3 orders of magnitude. Two relativistic magnetrons interact directly through a short waveguide of length l~~nX/2 to allow locking. Power-density enhancement due to source coherence is directly measured in the radiation field. Phase locking occurs in ~5 ns and is reproducible. Extension to 10-100 GW appears feasible with arrays of oscillators.

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supporting

confidence: 47%

Phase Locking of Relativistic Magnetrons

Benford¹,

Sze²,

Woo³

et al. 1989

Phys. Rev. Lett.

Self Cite

143

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“…Plasmas 20, 033108 (2013) two mirrored cavities on the top and bottom does not vary more than 62 for 50 ns. [21][22][23] Simulations were modeled using a 0.18 T uniform axial magnetic field (B) for 300 ns and the applied voltage (V) was varied to scale the electric field as dictated by Bunemann-Hartree condition for the even p-mode in a planar diode (À150 kV to À500 kV). All simulations, which achieved locking using the MCC, operated in the even p-mode electric field configuration shown in Fig.…”

Section: -5mentioning

confidence: 99%

Passive mode control in the recirculating planar magnetron

et al. 2013

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Preliminary experiments of the recirculating planar magnetron microwave source have demonstrated that the device oscillates but is susceptible to intense mode competition due, in part, to poor coupling of RF fields between the two planar oscillators. A novel method of improving the cross-oscillator coupling has been simulated in the periodically slotted mode control cathode (MCC). The MCC, as opposed to a solid conductor, is designed to electromagnetically couple both planar oscillators by allowing for the propagation of RF fields and electrons through resonantly tuned gaps in the cathode. Using the MCC, a 12-cavity anode block with a simulated 1 GHz and 0.26 c phase velocity (where c is the speed of light) was able to achieve in-phase oscillations between the two sides of the device in as little as 30 ns. An analytic study of the modified resonant structure predicts the MCC's ability to direct the RF fields to provide tunable mode separation in the recirculating planar magnetron. The selfconsistent solution is presented for both the degenerate even (in phase) and odd (180 out of phase) modes that exist due to the twofold symmetry of the planar magnetrons. V

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“…[1][2][3][4][5][6][7][8][9][10][11][12] The regimes of chaotic synchronization in such systems have wide practical applications, for example, for creation of a powerful array of microwave oscillators, secure information transmission, and control of chaos in the microwave devices. [13][14][15][16][17][18][19][20][21][22][23] Several types of the synchronous behavior in coupled chaotic beam-plasma systems are known at present. They are the phase synchronization, complete synchronization, generalized synchronization, and time scale synchronization.…”

Section: Introductionmentioning

confidence: 99%

Amplification through chaotic synchronization in spatially extended beam-plasma systems

Москаленко

Frolov

Короновский

et al. 2017

Chaos: An Interdisciplinary Journal of Nonlinear Science

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In this paper, we have studied the relationship between chaotic synchronization and microwave signal amplification in coupled beam-plasma systems. We have considered a 1D particle-in-cell numerical model of unidirectionally coupled beam-plasma oscillatory media being in the regime of electron pattern formation. We have shown the significant gain of microwave oscillation power in coupled beam-plasma media being in the different regimes of generation. The discovered effect has a close connection with the chaotic synchronization phenomenon, so we have observed that amplification appears after the onset of the complete time scale synchronization regime in the analyzed coupled spatially extended systems. We have also provided the numerical study of physical processes in the chain of beam-plasma systems leading to the chaotic synchronization and the amplification of microwave oscillations power, respectively.

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Phase locking of high-power microwave oscillators

Cited by 81 publications

References 7 publications

Phase Locking of Relativistic Magnetrons

Phase Locking of Relativistic Magnetrons

Passive mode control in the recirculating planar magnetron

Amplification through chaotic synchronization in spatially extended beam-plasma systems

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