Michael H. Francis

Publications

Near-Field, Spherical-Scanning Antenna Measurements With Nonideal Probe Locations

October 12, 2021

Author(s)

Ronald C. Wittmann, Bradley Alpert, Michael H. Francis

We introduce a near-field, spherical-scanning algorithm for antenna measurements that relaxes the usual condition requiring data points to be on a regular

A Possible Advantage of Using Bi-directional S-Parameters in Antenna Measurements

November 30, 2018

Author(s)

Alex Yuffa, Ronald C. Wittmann, Michael H. Francis, Josh Gordon, David R. Novotny

the unknown-thru calibration technique is being used to achieve a system level calibration at milli-meter frequencies (>50 GHz) on the robotic ranges at NIST

The Role of Filtering Higher Order Reflections in Antenna Extrapolation Measurements

September 30, 2017

Author(s)

Rob Horansky, Mohit S. Mujumdar, Dylan Williams, Kate Remley, David R. Novotny, Michael H. Francis

With more and more wireless devices being made with no test ports, and with the need to test these devices in real-world scenarios with no cable interference

Characterization of Millimeter-wave 3D-printed Antennas For CubeSat Applications Using a Robotic Antenna Range

February 21, 2017

Author(s)

Joshua A. Gordon, David R. Novotny, Ronald C. Wittmann, Michael H. Francis, Jeffrey R. Guerrieri, Alexandra Curtin, Miranda L. Butler, Albin Gasiewski, Lavanya Periasamy

3D printing is finding applications across many areas and may also be a useful technology for antenna fab- rication for CubeSats. However, the quality of an

Assessment of a 3D-Printed Aluminum Corrugated Feed Horn at 118.7503 GHz

February 19, 2017

Author(s)

Josh Gordon, David R. Novotny, Ronald C. Wittmann, Michael H. Francis, Jeffrey R. Guerrieri, Periasamy Lavanya, Albin Gasiewski

All-metal 3D printing is investigated as a viable option for millimeter wave applications. 3D printing is finding applications across many areas and may be a

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Michael H. Francis (Assoc)

Publications