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MMW Concepts LLC is the consulting firm of Mr. H. Bruce Wallace, an internationally recognized expert on Millimeterwave (MMW) and Sub-Millimeterwave (SMMW) technologies and applications.

 

Biography

Mr. H. Bruce Wallace retired from the Department of Army in November 2004 where he was most recently acting as Deputy and Director of the Weapons and Materials Research Directorate of the Army Research Laboratory. Previous to that he spent 7 years as Chief of the RF & Electronics Division where he was responsible for the Army’s basic and applied research in RF technologies. His primary area of research involved investigating the application of millimeter-wave techniques to weapon systems. This included studies in electronic components, atmospheric and near-earth propagation, active and passive system designs, and high-resolution polarimetric imaging. Key outcomes from his work was the development of SADARM MMW sensor system, the Army’s High Resolution Radar Imaging facility, which provides state-of-the-art imaging of ground platforms, and the Army’s and the Multifunction Radio Frequency System (MFRF) which has become a key electronic component in the Future Combat Systems (FCS).  He is author of more than 60 government and open literature publications. Mr. Wallace has served on multiple DoD and NATO panels as Chair or Army lead and as lead investigator on several trade studies of DoD radar systems and capabilities. He was also a member of three NASA review panels providing technical and managerial review of basic research programs and the landing radar for the Martian Phoenix program. He is a Fellow of the IEEE Geosciences and Remote Sensing Society.

MMW Systems designed and built in his career:

35, 95, and 140 GHz Radiometers for smart munitions
35, 60, 95, and 140 GHz FMCW radars for smart munitions
A Ka-Band common aperture active/passive sensor for smart munitions
A 95 and 140 GHz common aperture dual band radiometer for smart munitions

35,  95, and 140 GHz common aperture  transmissometer for chaff characterization
2-18 GHz transmissometer for chaff characterization
Atmospheric propagation instrumentation at 35, 60, 95, 140, and 140 GHz

Polarimetric ISAR radars at 10, 35, and 95 GHz with 10 cm resolution
Ka band Monopulse Polarimetric Radar with 7 cm resolution
W-Band 3D imaging radar for signature analysis

140 GHz Coherent monopulse tracking radar
35, 60, 95, 140, 220 Noncoherent tracking radars.
95 and 140 GHz beam riding receivers
High Power Coherent W-Band bistatic FMCW radar

Relevant Publications:

Signatures:

  1. H.B. Wallace, "35 GHz radiometric Signatures of Artillery Pieces and Their Application to Howls," BRL-MR-2727(C), Feb 77.
  2. H.B. Wallace and D. Bauerle, “High Resolution Millimeter Wave Imaging of Ground Vehicles,"  BRL-MR-3821, Aug 1989.
  3. S.R Stratton, H.B. Wallace, R.L. Bender, and A.E.M. Brodeen, “A Comparison of Signature Measurements of Multiple T72M1 Tanks at 35 GHz,” ARL-TR-1421, Apr 97.
  4. S.R. Stratton, H. B. Wallace, and R.L. Bender, “Radar Cross-Section Measurements of the ZSU-23-4 at X-, Ka-, and W-Bands,” ARL-TR-1722, , Sept 1998.
  5. H.B.Wallace, "Three Dimensional Radar Imaging of Targets and Clutter at W-Band," Proceedings of the 48th AGARD Electromagnetic Wave Propagation Panel Symposium, May 1991.
  6. H.B.Wallace, "Ka-Band ISAR Measurements of Countermeasured Vehicles,"  Proceedings of the 52nd AGARD-EPP Specialists and Panel Meeting, 17-21 May 1993, Palma de Mallorca, SP

Phenomenology

  1. H.B. Wallace, "140 GHz Capture Antenna Multipath Experiment," ARBRL-MR-02855(U), Aug 78.
  2. H.B. Wallace, "140 GHz Multipath Measurements Over Varied Ground Covers," EASCON 1979 Rec, Oct 79.
  3. H.B. Wallace, "Millimeter-wave Propagation through Snow, "Proc. of the SPIE Symposium '83, Vol 414, Apr 1983.
  4. H.B. Wallace, "Millimeter-wave Propagation Measurements at the Ballistic Research Laboratory,"  Trans. on Geosci. Remote Sensing, Vol 26, No. 3, May 1988.
  5. V.W. Richard, J.E. Kammerer, and H.B. Wallace, "Rain Backscatter Measurements at Millimeter Wavelengths,"  Trans. on Geosci. Remote Sensing, Vol 26, No. 3, May 1988.
  6. F.T. Ulaby, et al, “95-GHz Scattering by Terrain at Near-grazing Incidence,” IEEE Trans. Antennas Propagat., Vol 46, No. 1, Jan 1998.
  7. “Millimeter-Wave Scattering by Terrain at Near Grazing Incidence”, Ulaby, Nashashibi, El-Rouby, Li, DeRoo, Sarabandi, Wellman, and Wallace, IEEE-AP Transactions Special Issue on “Low Grazing Angle Backscatter for Rough Surfaces”, Feb 98.
  8. H. Bruce Wallace, "Atmospheric Phenomenology in the 10 to 10000 GHz Spectral Region," The 4th International Aviation Security Technology Symposium, November 27 – December 1, 2006

 Devices

  1. "On the Use of an IMPATT Oscillator as an Amplifier and Upconverter," Master's Thesis, Univ. of Del., June 1984
  2. J.R. Crowley, et.al, "140 GHz Indium Phosphide Gunn Diode,"  IEE Electronic Letters, Vol 30, No. 6, Mar 1994.
  3. J. Hesler, k. Hui. R. Dahlstrom, R. Weikle, T. Crowe, C. Mann, and H. Wallace, “Analysis of an Octagonal Micromachined Horn Antenna for Submillimeter-Wave Applications,” , Trans on A & P, June 2001
  4. R.T. Kemerley, H.B. Wallace, and M. Yoder, ‘Impact of Wide Bandgap Microwave Devices on DoD Systems,’ Proc. IEEE, Vol 90, No 6, Jun 2002.
  5. G. Borsuk, R.T. Kemerley, H.B. Wallace, ’DoD Investment Strategy for Vacuum Electronics R&D & Investment Balance for RF Power Vacuum Electronics and Solid State R&D,’ NRL-MR-01-8570, August 2001

Systems:

  1. D.G. Bauerle, H.B. Wallace, ‘A New Radar Concept for Top Attack Weapon Systems,’ ARBRL-03268, May 1983.
  2. H. B. Wallace, "Three Dimensional Radar Imaging of Targets and Clutter at W-Band," 48th AGARD Electromagnetic Wave Propagation Panel Symposium, May 1991.
  3. S.R. Stratton, D.G. Bauerle, and H.B. Wallace, "Multipath Induced, Low-Angle Tracking Errors at 140 GHz," ARL-MR-140, Jun 94.
  4. H. B. Wallace and T.J. Pizzillo, “A Technique for Calibrating the Phase Detector of a Wideband Radar Using an External Target,” ARL-TR-1521, Mar 98
  5. T.J. Pizzillo, H. B. Wallace, “A Technique for Calibrating the Phase Detector of Wideband Radars Using a Phase Modulation and Demodulation Scheme,” ARL-TR-1567,  May 1998
  6. “Future Targeting Systems for Army After Next,” N. Powell, R. Buser, B. Wallace, A. Tarbell, Proceedings of the National Military Sensing Symposium, 16 Nov 1999
  7. ”Report on Technology for Multifunction RF Systems,” HB Wallace, NATO final report of SET-043/RTG-24, Feb 2004
  8. Wallace, H.B., “Millimeter waves: Myths and reality,” Plenary talk at the SPIE Defense and Security Symposium, 2006.
  9. H. B. Wallace, M. J. Rosker, "An Analysis of Three Applications for an EHF Sub-Aperture, " 2006 International Antennas and Propagation Symposium, June 2006.
  10. "Assessment of Millimeter-wave and Terahertz Technology for Detection and Identification of Concealed Explosives and Weapons", The National Academies Press, 2007
  11. Rosker, M.J., and Wallace H.B., “Imaging Through the Atmosphere at Terahertz Frequencies,” IMS2007 Proceedings, June 2007.
  12. R. Appleby and H.B. Wallace, “Standoff Detection of Weapons and Contraband in the 100 GHz to 1 THz Region,” in IEEE Trans. Antennas Propag., vol. 55, no. 11, pp. 2944-2956, Nov. 2007