Next Generation Spaceborne Wind Scatterometer and CubeSat Antennas: Lightweight 3D Printed Inhomogeneous Lens Antennas and Dual Reflectarray Antennas
The IEEE Southeastern Michigan Section Chapter IV, the IEEE Geoscience and Remote Sensing Southeast Michigan Chapter, and the Radiation Laboratory, University of Michigan invites you to attend an upcoming lecture titled "Next Generation Spaceborne Wind Scatterometer and CubeSat Antennas: Lightweight 3D Printed Inhomogeneous Lens Antennas and Dual Reflectarray Antennas” by Jordan Budhu.
Mr. Budhu is a Ph.D. candidate at the University of California Los Angeles (UCLA) under the advisement of Professor Yahya Rahmat-Samii in the Antenna Research, Analysis, and Measurement (ARAM) Laboratory. He was also selected to be the Head EE Department TA at UCLA for the Fall 2018 quarter, a position selected to be awarded to a single candidate of nearly 100 TA’s in the department. He was also an employee at the NASA Jet Propulsion Laboratory in 2011 and 2012. He is the author of numerous publications in various IEEE antennas and propagation society journals. He is also a member of both IEEE APS and the Bioelectromagnetics Societies.
Date and Time
Location
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Registration
- Date: 05 Jun 2018
- Time: 09:00 AM to 10:00 AM
- All times are (GMT-05:00) US/Michigan
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- 1301 Beal Avenue
- Ann Arbor, Michigan
- United States 48109
- Building: Electrical Engineering Building
- Room Number: 1005
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- Contact Event Host
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Leland Pierce : lep@umich.edu
Adib Nashashibi : nuha@umich.edu - Co-sponsored by IEEE Southeastern Michigan Section Chapter IV, IEEE Geoscience and Remote Sensing Southeastern Michigan Chapter, and the Radiation Laboratory, University of Michigan.
Speakers
Jordan Budhu of The University of California, Los Angeles (UCLA)
Next Generation Spaceborne Wind Scatterometer and CubeSat Antennas: Lightweight 3D Printed Inhomogeneous Lens Antennas
Our approach to achieving such a design is a shaping algorithm based on geometrical optics (GO) and particle swarm optimization (PSO). The GO is equipped with the capability to trace rays through inhomogeneous media, thus allowing the synthesis of both shape and material. The extra degree of freedom allows one to obtain even thinner, more lightweight lenses, with superior scan performance. The bounding surface and permittivity filling the volume of the lens is parameterized using power series expansions with unknown coefficients. Each set of coefficients defines a unique design for characterization through the GO Analysis routine. By integrating the GO algorithm with the PSO method, the optimum set of coefficients are converged upon quickly. This design meets the goals of light-weight and conically scanned revolving beam via electronic means, thus achieving the original project goals. However, the obtained design specifies a material permittivity variation which is difficult to manufacture. To address this issue, we take advantage of the 3D printing revolution to ‘print’ the resultant complex materials on demand. However, once again, this approach brings its own challenges. Materials must be accurately characterized electromagnetically and evaluated for spaceborne use. We present our analyses of two such materials and highlight the advantages and disadvantages of each material in terms of loss, print quality, and mechanical strength.
Several breadboard models of 3D printed lenses which meet the design goals are presented along with measurement validation. Measurements are performed in both the UCLA plane bi-polar near field and the UCLA spherical near field measurement range.
Also presented is recent work on reflectarray antennas for CubeSat applications. To obtain the design of the reflectarray antenna system, complex computer codes must be developed. These codes are based on the SDMoM employing the Infinite Array Analysis Technique commonly used for periodic structure and phased array analysis.
Biography:
Agenda
9:00 AM - 10:00 AM Lecture