Douglas (Doug) Henke

Roles and responsibilities

Research Council Officer

Research and design engineering to support radio astronomy, including component design and instrumentation development for radio telescopes.

Current research and/or projects

Receiver Component Design

  • Orthomode transducers (OMT)
  • Waveguide feeds
  • Ridge waveguide front-end design
  • Millimetre-wave optics
  • SIS mixers
  • EM simulation and optimisation

Receiver Architectures

  • Balanced and image rejection receiver topologies
  • Focal plane array implementation


  • 3-D printing and additive manufacturing of waveguide components
  • Silicon micro-machining for waveguide platelet structures

Research and/or project statements

  • Focal plane array development for future single-dish instruments
  • Octave bandwidth receiver development using ridge waveguide front-ends
  • Feed horn and OMT development for ngVLA
  • Design for manufacturability


M.A.Sc., Electrical Engineering, University of Victoria, 2005

B.Eng., Electrical Engineering, University of Victoria, 2001

Professional activities/interests

  • URSI senior member
  • Interests in low-noise receiver design for radio astronomy
  • Interests in RF/microwave/millimetre-wave component design
  • Interests in EM simulation and modeling


Donald C. Morton Fellowship (2003-2005)

Key publications

D. Henke, N. Kelly, K. Marshall, I. Wevers and L. B. G. Knee, "A Turnstile Quad-Ridge Orthomode Transducer (OMT) for Octave-Bandwidth Receiver Front-Ends (24–51 GHz)," IEEE Trans. Microw. Theory Tech., vol. 71, no. 11, pp. 4906-4921, Nov. 2023. 

D. Henke, F. Jiang, S. Salem Hesari, A. Seyfollahi, B. Veidt, L. B. G. Knee, "Octave bandwidth receiver technology for radio and millimetre-wave telescopes," Proc. SPIE 12190, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI, 121901Y, Aug. 31, 2022.

D. Henke and C. Groppi, "Focal Plane Array Concept for ALMA 2030," ALMAFED2021, Oct. 1, 2021.

D. Henke, S. S. Hesari and L. B. G. Knee, "Axial Ring Feed Horn with Logarithmic Flare for Offset Gregorian Optics," 2021 XXXIVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS), 2021, pp. 1-4.

D. Henke, D. Johnstone, L. B. G. Knee, S. Chapman, C. Ross, M. Fich, T. Nikola, S. K. Choi, M. D. Niemack, S. C. Parshley, G. J. Stacey, E. Vavagiakis, "Optical design study for an 850 GHz commissioning camera module for CCAT-prime," Proc. SPIE 11453, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X, 114532K, Dec. 13, 2020.

D. Henke, G. Lacy, P. Niranjanan, and D. Chalmers, “Measurements of Composite Reflectors across Q-Band (33–50 GHz) and W-Band (75–115 GHz),” in 18th Int. Symp. Antenna Technol. Appl. Electromagn. (ANTEM), Aug. 19–22, 2018.

D. Henke, J. Di Francesco, L. Knee, and S. Claude, “Coherent Multi-Beam Arrays using a Cold Aperture Stop,” IEEE Trans. THz Sci. Technol., vol. 6, no. 4, pp. 601–610, July 2016.

D. Henke and S. Claude, “Minimizing RF Performance Spikes in a Cryogenic Orthomode Transducer (OMT),” IEEE Trans. Microw. Theory Tech., vol. 62, no. 4, pp. 840–850, Apr. 2014.

D. Henke and S. Claude, “Design of a 70–116 GHz W-band turnstile OMT,” in 44th Eur. Microw. Conf., Rome, Italy, Oct. 6–9, 2014, pp. 456–459.

D. Henke, F. Jiang, S. Claude, "Mode suppressing packaging for 50 GHz cryogenic low-noise amplifiers," 42nd European Microwave Conference (EuMC), pp.1003-1006, Oct. 29-Nov. 1, 2012.

D. Henke, S. Claude, and F. Jiang, “Component development for ALMA band 1 (31–45 GHz),” in Proc. SPIE 7741, Millim., Submillim., Far-Infrared Detectors Instrum. Astron. V, Jul. 15, 2010, vol. 7741, pp. 774123-1–774123-13.

D. Henke, D. Meledin, R. Monje, and V. Belitsky, “Modeling SIS Junction Arrays for APEX Band 3 (385–500 GHz),” 21st Int. Symp. on Space Terahertz Tech., Oxford, UK, Mar. 23–25, 2010. 

Previous work experience

Feb. 2006 - Mar. 2009

Group for Advanced Receiver Development (GARD)

Chalmers University, Gothenburg, Sweden

Receiver and Test Engineer



Daniels Electronics (now Codan Limited)

RF Test Engineer

International experience and/or work

Receiver and Test Engineer, GARD, Chalmers University, Sweden (2006-2009)

Douglas (Doug) Henke

Research Council Officer, RF
Herzberg Astronomy and Astrophysics
5071 West Saanich Road
Victoria, British Columbia V9E 2E7
Preferred language: English
Telephone: 250-363-6937


Sciences, Engineering