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Research Output 2004 2019

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Article
2019
Open Access
File
coupled modes
copper
tunable filters
backups
periodic variations
1 Citation (Scopus)

Resonant excitation of volume and surface fields on complex electrodynamic surfaces

MacLachlan, A. J., Robertson, C. W., Konoplev, I. V., Cross, A. W., Phelps, A. D. R. & Ronald, K., 14 Mar 2019, In : Physical Review Applied. 11, 3, 8 p., 034034.

Research output: Contribution to journalArticle

Open Access
File
Electrodynamics
electrodynamics
Excitation
excitation
Substrate
2018
2 Citations (Scopus)
Open Access
File
radiation sources
coupled modes
cavities
mesh
configurations
2017
8 Citations (Scopus)
Open Access
File
Periodic structures
3D printers
printing
Printing
Electron beams
1 Citation (Scopus)

Laboratory experiments simulating electron cyclotron masers in space

Ronald, K., Speirs, D. C., King, M., Heelis, T., McConville, S. L., Gillespie, K. M., Bingham, R., Robertson, C. W., Cross, A. W. & Phelps, A. D. R., 4 Aug 2017, In : EPJ Web of Conferences. 149, 2 p., 03015.

Research output: Contribution to journalArticle

Open Access
File
masers
cyclotrons
electrons
2016
3 Citations (Scopus)

Microwave coupler for W-band micro re-entrant square cavities

Paoloni, C., Mineo, M., Yin, H., Zhang, L., He, W., Robertson, C. W., Ronald, K., Phelps, A. D. R. & Cross, A. W., 15 May 2016, In : IET Microwaves, Antennas & Propagation. 10, 7, p. 764-769 6 p.

Research output: Contribution to journalArticle

Open Access
File
Klystrons
Microwaves
Millimeter waves
Microfabrication
Amplification
2015
15 Citations (Scopus)

Experimental study of microwave pulse compression using a five-fold helically corrugated waveguide

Zhang, L., Mishakin, S. V., He, W., Samsonov, S. V., McStravick, M., Denisov, G. G., Cross, A. W., Bratman, V. L., Whyte, C. G., Robertson, C. W., Young, A. R., Ronald, K. & Phelps, A. D. R., 30 Jan 2015, In : IEEE Transactions on Microwave Theory and Techniques . 63, 3, p. 1090-1096 7 p., 7027876.

Research output: Contribution to journalArticle

Open Access
File
corrugated waveguides
Pulse compression
pulse compression
Waveguides
Microwaves
35 Citations (Scopus)
Open Access
File
Beam plasma interactions
Electron beams
oscillators
electron beams
simulation
2014

3D PiC code investigations of auroral kilometric radiation mechanisms

Gillespie, K. M., McConville, S. L., Speirs, D. C., Ronald, K., Phelps, A. D. R., Bingham, R., Cross, A. W., Robertson, C. W., Whyte, C. G., He, W., Vorgul, I., Cairns, R. A. & Kellett, B. J., 1 Jan 2014, In : Journal of Physics: Conference Series . 511, 1, 6 p., 012051.

Research output: Contribution to journalArticle

Open Access
File
radiation
cyclotrons
simulation
radio emission
magnetic dipoles

Scaled experiment to investigate auroral kilometric radiation mechanisms in the presence of background electrons

McConville, S. L., Ronald, K., Speirs, D. C., Gillespie, K. M., Phelps, A. D. R., Cross, A. W., Bingham, R., Robertson, C. W., Whyte, C. G., He, W., King, M., Bryson, R., Vorgul, I., Cairns, R. A. & Kellett, B. J., 1 Jan 2014, In : Journal of Physics: Conference Series . 511, 1, 6 p., 012061.

Research output: Contribution to journalArticle

Open Access
File
magnetic compression
radiation
electrons
distribution functions
waveguides
2013
3 Citations (Scopus)

Circular polariser for use in a gyro-travelling wave amplifier

Robertson, C., Young, A., Ronald, K., Cross, A. & Whyte, C., 20 Aug 2013, In : IET Microwaves, Antennas & Propagation. 7, 11, p. 942-948 7 p.

Research output: Contribution to journalArticle

traveling wave amplifiers
computerized simulation
corrugated waveguides
broadband
polarized radiation
15 Citations (Scopus)

Surface field excitation by an obliquely incident wave

Konoplev, I. V., Phipps, A. R., Phelps, A. D. R., Robertson, C., Ronald, K. & Cross, A. W., Apr 2013, In : Applied Physics Letters. 102, 14, 4 p., 141106.

Research output: Contribution to journalArticle

Open Access
File
excitation
amplifiers
2012
22 Citations (Scopus)

Cylindrical, periodic surface lattice — theory, dispersion analysis, and experiment

Konoplev, I. V., MacLachlan, A. J., Robertson, C. W., Cross, A. W. & Phelps, A. D. R., Sep 2012, In : Applied Physics Letters. 101, 12, 5 p., 121111.

Research output: Contribution to journalArticle

Open Access
File
electromagnetic properties
wave equations
topology
impedance
coatings
1 Citation (Scopus)

Design of a triodelike electron gun for millimeter-wave gyrodevices

Robertson, C., Young, A., Ronald, K., Cross, A. & Whyte, C., Sep 2012, In : IEEE Transactions on Electron Devices. 59, 9, p. 2520 - 2523 4 p.

Research output: Contribution to journalArticle

Electron guns
Millimeter waves
Triodes
78 Citations (Scopus)
File
corrugated waveguides
coupled modes
Waveguides
Microwaves
microwaves
14 Citations (Scopus)

Wideband gyro-amplifiers

Whyte, C. G., Ronald, K., Young, A. R., He, W., Robertson, C. W., Rowlands, D. H. & Cross, A. W., 9 May 2012, In : IEEE Transactions on Plasma Science. 40, 5, p. 1303-1310 8 p.

Research output: Contribution to journalArticle

Open Access
File
amplifiers
corrugated waveguides
broadband
bandwidth
power gain
2011
14 Citations (Scopus)

Auroral magnetospheric cyclotron emission processes: numerical and experimental simulations

Ronald, K., Speirs, D. C., McConville, S. L., Gillespie, K., Phelps, A. D. R., Bingham, R., Vorgul, I., Cairns, R. A., Cross, A. W., Robertson, C., Whyte, C. G., He, W. & Kellett, B. J., Jul 2011, In : Plasma Physics and Controlled Fusion. 53, 7, 11 p., 074015.

Research output: Contribution to journalArticle

Cyclotrons
Magnetosphere
cyclotrons
magnetospheres
Radiation
4 Citations (Scopus)

Characterization of a Penning discharge for investigation of auroral radio wave generation mechanisms

McConville, S., Koepke, M. E., Gillespie, K., Matheson, K., Whyte, C., Robertson, C. & Speirs, D., 14 Nov 2011, In : Plasma Physics and Controlled Fusion. 53, 12, 9 p., 124020.

Research output: Contribution to journalArticle

Penning discharge
Radio waves
wave generation
radio waves
Magnetosphere
12 Citations (Scopus)

Cyclotron maser radiation from inhomogeneous plasmas

Cairns, R. A., Vorgul, I., Bingham, R., Ronald, K., Speirs, D. C., McConville, S. L., Gillespie, K. M., Bryson, R., Phelps, A. D. R., Kellett, B. J., Cross, A. W., Robertson, C., Whyte, C. G. & He, W., Feb 2011, In : Physics of Plasmas. 18, 2, p. 022902 5 p.

Research output: Contribution to journalArticle

masers
cyclotrons
radiation
plasma diffusion
space plasmas
45 Citations (Scopus)
Open Access
File
coherent radiation
cavities
waveguides
Q factors
cut-off
Open Access
File
corrugated waveguides
cusps
electron beams
backward waves
wave interaction
2010
107 Citations (Scopus)

A cusp electron gun for millimeter wave gyrodevices

Donaldson, C. R., He, W., Cross, A. W., Li, F., Phelps, A. D. R., Zhang, L., Ronald, K., Robertson, C., Whyte, C. & Young, A., 5 Apr 2010, In : Applied Physics Letters. 96, 14, 3 p., 141501.

Research output: Contribution to journalArticle

Open Access
File
electron guns
cusps
millimeter waves
thermionics
submillimeter waves
8 Citations (Scopus)

A novel cylindrical TE2,1 mode converter

Constable, D. A., Fampris, X. S., Ronald, K., He, W., Whyte, C. G. & Robertson, C. W., 17 Sep 2010, In : Review of Scientific Instruments. 81, 9, p. 094702 10 p.

Research output: Contribution to journalArticle

converters
Circular waveguides
Rectangular waveguides
Bandwidth
Computer simulation
13 Citations (Scopus)

Experimental results on microwave pulse compression using helically corrugated waveguide

McStravick, M., Samsonov, S. V., Ronald, K., Mishakin, S. V., He, W., Denisov, G. G., Whyte, C. G., Bratman, V. L., Cross, A. W., Young, A. R., MacInnes, P., Robertson, C. W. & Phelps, A. D. R., 15 Sep 2010, In : Journal of Applied Physics. 108, 5, p. - 4 p.

Research output: Contribution to journalArticle

corrugated waveguides
pulse compression
sweep frequency
microwaves
wave packets
26 Citations (Scopus)

Generation of 3 GW microwave pulses in X-band from a combination of a relativistic backward-wave oscillator and a helical-waveguide compressor

Bratman, V. L., Denisov, G. G., Kolganov, N. G., Mishakin, S. V., Samsonov, S. V., Cross, A. W., He, W., Zhang, L., McStravick, M., Whyte, C. G., Young, A. R., Ronald, K., Robertson, C. W. & Phelps, A. D. R., Nov 2010, In : Physics of Plasmas. 17, 11, 3 p., 110703.

Research output: Contribution to journalArticle

backward waves
compressors
superhigh frequencies
oscillators
waveguides
2 Citations (Scopus)
masers
free electrons
high current
electron beams
circumferences
24 Citations (Scopus)

Numerical investigation of auroral cyclotron maser processes

Speirs, D., Ronald, K., McConville, S. L., Gillespie, K. M., Phelps, A. D. R., Cross, A. W., Bingham, R., Robertson, C. W., Whyte, C., He, W., Vorgul, I., Cairns, R. A. & Kellett, B. J., 5 May 2010, In : Physics of Plasmas. 17, 5, 8 p., 056501.

Research output: Contribution to journalArticle

masers
cyclotrons
output
magnetic compression
electron beams
1 Citation (Scopus)

Numerical investigation of auroral cyclotron maser processes: publisher's note

Speirs, D. C., Ronald, K., McConville, S. L., Gillespie, K. M., Phelps, A. D. R., Cross, A. W., Bingham, R., Robertson, C. W., Whyte, C. G., He, W., Vorgul, I., Cairns, R. A. & Kellett, B. J., 1 Jun 2010, In : Physics of Plasmas. 17, 6, 1 p., 056501.

Research output: Contribution to journalArticle

masers
cyclotrons
output
magnetic compression
electron beams
1 Citation (Scopus)

Numerical investigation of auroral cyclotron maser processes (vol 17, 056501, 2010)

Speirs, D. C., Ronald, K., McConville, S. L., Gillespie, K. M., Phelps, A. D. R., Cross, A. W., Bingham, R., Robertson, C. W., Whyte, C. G., He, W., Vorgul, I., Cairns, R. A. & Kellett, B. J., Jun 2010, In : Physics of Plasmas. 17, 6, p. - 1 p., 069901.

Research output: Contribution to journalArticle

masers
cyclotrons
18 Citations (Scopus)

Surface-field cavity based on a two-dimensional cylindrical lattice

Konoplev, I. V., Fisher, L., Ronald, K., Cross, A. W., Phelps, A. D. R., Robertson, C. W. & Thumm, M., 9 Jun 2010, In : Applied Physics Letters. 96, 23, 3 p., 231111.

Research output: Contribution to journalArticle

Open Access
File
cavities
Q factors
masers
electromagnetic fields
37 Citations (Scopus)

Surface wave Cherenkov maser based on a periodic lattice

Konoplev, I. V., Fisher, L., Cross, A. W., Phelps, A. D. R., Ronald, K. & Robertson, C. W., 28 Jun 2010, In : Applied Physics Letters. 96, 26, 3 p., 261101 .

Research output: Contribution to journalArticle

masers
surface waves
cavities
energy sources
Q factors
2009
60 Citations (Scopus)
design optimization
cusps
millimeter waves
electron beams
optimization
64 Citations (Scopus)

Millimeter wave generation from a pseudospark-sourced electron beam

Yin, H., Cross, A. W., He, W., Phelps, A. D. R., Ronald, K., Bowes, D. & Robertson, C. W., 23 Jun 2009, In : Physics of Plasmas. 16, 6, 6 p., 063105.

Research output: Contribution to journalArticle

wave generation
millimeter waves
electron beams
backward waves
masers
11 Citations (Scopus)

Production of powerful spatially coherent radiation in planar and coaxial fem exploiting two-dimensional distributed feedback

Arzhannikov, A. V., Cross, A. W., Ginzburg, N. S., He, W., Kalinin, P. V., Konoplev, I. V., Kuznetsov, S. A., Peskov, N. Y., Phelps, A. D. R., Robertson, C. W., Ronald, K. & Whyte, C. G., 9 Sep 2009, In : IEEE Transactions on Plasma Science. 37, 9, p. 1792-1800 8 p.

Research output: Contribution to journalArticle

coherent radiation
masers
free electrons
relativistic electron beams
microwave frequencies
2008
25 Citations (Scopus)

3D PiC code simulations for a laboratory experimental investigation of Auroral Kilometric Radiation mechanisms

Gillespie, K. M., Speirs, D., Ronald, K., McConville, S. L., Phelps, A. D. R., Bingham, R., Cross, A. W., Robertson, C. W., Whyte, C. G., He, W., Vorgul, I., Cairns, R. A. & Kellett, B. J., Dec 2008, In : Plasma Physics and Controlled Fusion. 50, 12, 11 p., 124038.

Research output: Contribution to journalArticle

Cyclotrons
Radiation
radiation
Magnetosphere
Earth magnetosphere
83 Citations (Scopus)
cusps
traveling wave amplifiers
magnetic coils
electron beams
accelerators
45 Citations (Scopus)

Demonstration of auroral radio emission mechanisms by laboratory experiment

McConville, S. L., Speirs, D., Ronald, K., Phelps, A. D. R., Cross, A. W., Bingham, R., Robertson, C. W., Whyte, C. G., He, W., Gillespie, K. M., Vorgul, I., Cairns, R. A. & Kellett, B. J., Jul 2008, In : Plasma Physics and Controlled Fusion. 50, 7, 13 p., 074010.

Research output: Contribution to journalArticle

radio emission
Demonstrations
Radiation
cyclotron frequency
Cyclotrons

Demonstration of auroral radio emission mechanisms by laboratory experiment

McConville, S. L., Speirs, D. C., Ronald, K., Phelps, A. D. R., Cross, A. W., Bingham, R., Robertson, C. W., Whyte, C. G., He, W., Gillespie, K., Vorgul, I., Cairns, R. A. & Kellett, B. J., 31 Jul 2008, In : Plasma Physics and Controlled Fusion. 50, 7, 13 p., 074010.

Research output: Contribution to journalArticle

Open Access
File
radio emission
Demonstrations
Radiation
cyclotron frequency
Cyclotrons
25 Citations (Scopus)
electron flux
electron beams
magnetic mirrors
electron guns
pitch (inclination)
9 Citations (Scopus)

Free-electron maser based on a cavity with two- and one-dimensional distributed feedback

Konoplev, I. V., Cross, A. W., MacInnes, P., He, W., Phelps, A. D. R., Whyte, C. G., Ronald, K. & Robertson, C. W., 27 May 2008, In : Applied Physics Letters. 92, 21, 3 p., 211501 .

Research output: Contribution to journalArticle

masers
free electrons
electron beams
cavities
pulses
35 Citations (Scopus)

Numerical simulation of auroral cyclotron maser processes

Speirs, D., McConville, S. L., Gillespie, K. M., Ronald, K., Phelps, A. D. R., Cross, A. W., Bingham, R., Robertson, C. W., Whyte, C. G., Vorgul, I., Cairns, R. A. & Kellett, B. J., Jul 2008, In : Plasma Physics and Controlled Fusion. 50, 7, 15 p., 074011 .

Research output: Contribution to journalArticle

Masers
Cyclotrons
masers
Velocity distribution
cyclotrons
33 Citations (Scopus)

Radio frequency resonator structure and diagnostic measurements for a laboratory simulation of Auroral Kilometric Radiation

Ronald, K., Speirs, D., McConville, S. L., Phelps, A. D. R., Robertson, C. W., Whyte, C. G., He, W., Gillespie, K. M. & Bingham, R., May 2008, In : Physics of Plasmas. 15, 5, p. 056503 8 p.

Research output: Contribution to journalArticle

radio frequencies
resonators
cyclotron frequency
radiation
simulation
2007
62 Citations (Scopus)
Coaxial
masers
free electrons
Electron
Cavity
88 Citations (Scopus)
traveling wave amplifiers
thermionic cathodes
corrugated waveguides
electron guns
electron beams
high current
electron beams
microwaves
2006
58 Citations (Scopus)

Experimental study of coaxial free-electron maser based on two-dimensional distributed feedback

Konoplev, I. V., McGrane, P., He, W., Cross, A. W., Phelps, A. D. R., Whyte, C. G., Ronald, K. & Robertson, C. W., 24 Jan 2006, In : Physical Review Letters. 96, 3, p. 035002/1-035002/4

Research output: Contribution to journalArticle

masers
free electrons
high current
tuning
photonics
39 Citations (Scopus)

High-current oversized annular electron beam formation for high-power microwave research

Konoplev, I. V., Cross, A. W., MacInnes, P., He, W., Whyte, C. G., Phelps, A. D. R., Robertson, C. W. & Ronald, K., 23 Oct 2006, In : Applied Physics Letters. 89, 17, p. 171503-1-171503-3

Research output: Contribution to journalArticle

high current
electron beams
microwaves
masers
beam currents
79 Citations (Scopus)
Open Access
File
backward waves
oscillators
waveguides
wave interaction
simulation
2005
35 Citations (Scopus)

A laboratory experiment to investigate auroral kilometric radiation emission mechanisms

Speirs, D., Vorgul, I., Ronald, K., Bingham, R., Cairns, R. A., Phelps, A. D. R., Kellett, B. J., Cross, A. W., Whyte, C. G. & Robertson, C., Oct 2005, In : Journal of Plasma Physics. 71, 5, p. 665-674 9 p.

Research output: Contribution to journalArticle

magnetic compression
electron beams
magnetic field configurations
radiation
masers
74 Citations (Scopus)

Gyro-BWO experiments using a helical interaction waveguide

He, W., Ronald, K., Young, A. R., Cross, A. W., Phelps, A. D. R., Whyte, C. G., Rafferty, E. G., Thomson, J., Robertson, C. W., Speirs, D., Samsonov, S. V., Bratman, V. L. & Denisov, G. G., May 2005, In : IEEE Transactions on Electron Devices. 52, 5, p. 839-844 5 p.

Research output: Contribution to journalArticle

Electron beams
Waveguides
Tuning
Thermionic cathodes
Experiments