Open Access
A Microfabricated 8-40 GHz Dual-Polarized Reflector Feed
Kenneth Vanhille,Tim Durham,William Stacy,David Karasiewicz,Aaron Caba,Christopher Trent,Kevin M. Lambert,Felix A. Miranda +7 more
TLDR
In this article, a 6x6 element, dual-linear polarized array with beamformer that operates from 8 to 40 GHz is described. And the beamformer includes baluns that feed the dual-polarized differential antenna elements and reactive splitter networks that also cover the full frequency range of operation.Abstract:
Planar antennas based on tightly coupled dipole arrays (also known as a current sheet antenna or CSA) are amenable for use as electronically scanned phased arrays. They are capable of performance nearing a decade of bandwidth. These antennas have been demonstrated in many implementations at frequencies below 18 GHz. This paper describes the implementation using a relatively new multi-layer microfabrication process resulting in a small, 6x6 element, dual-linear polarized array with beamformer that operates from 8 to 40 GHz. The beamformer includes baluns that feed the dual-polarized differential antenna elements and reactive splitter networks that also cover the full frequency range of operation. This antenna array serves as a reflector feed for a multi-band instrument designed to measure snow water equivalent (SWE) from airborne platforms. The instrument has both radar and radiome try capability at multiple frequencies. Scattering-parameter and time-domain measurements have been used to characterize the array feed. Radiation patterns of the antenna have been measured and are compared to simulation. To the best of the authors' knowledge, this work represents the most integrated multi-octave millimeter-wave antenna feed fabricated to date.read more
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Patent
Batch fabricated microconnectors
David Sherrer,Jean-Marc Rollin +1 more
TL;DR: In this article, the authors present a fabrication method for high power connectors with high frequency capability at frequencies up to approximately 110 GHz and provide a detailed analysis of the fabrication process and interconnects.
Proceedings ArticleDOI
Antenna characterization for the Wideband Instrument for Snow Measurements (WISM)
TL;DR: Experimental characterization of the antenna for the Wideband Instrument for Snow Measurement (WISM) under development for the NASA Earth Science Technology Office (ESTO) Instrument Incubator Program (IIP), is discussed.
Patent
Devices and methods for solder flow control in three-dimensional microstructures
David Sherrer,James R. Reid +1 more
TL;DR: In this paper, structural, materials, and methods to control the spread of a solder material or other flowable conductive material in electronic and/or electromagnetic devices are provided, as well as structures, materials and methods.
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Multi-layer digital elliptic filter and method
TL;DR: In this paper, the present invention relates generally to digital elliptic filters, and more particularly, but not exclusively, to multi-layer DFFs and methods for their fabrication and fabrication.
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Multilayer build processes and devices thereof
TL;DR: In this article, a process to form devices may include applying a temporary patterned passivation layer on a conductive substrate, selectively forming an image-wise mold layer on and/or over a substrate, forming a first material on or over at least one of the exposed conductive areas, and removing a portion of a sacrificial image wise mold layer.
References
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Patent
Wideband phased array antenna and associated methods
TL;DR: In this article, a wideband phased array antenna with a wide frequency bandwidth and a wide scan angle is obtained by utilizing tightly packed dipole antenna elements with large mutual capacitive coupling.
Journal Article
An enabling new 3d architecture for microwave components and systems
Popovic Zoya,Rondineau Sebastien,Filipovic Dejan,Sherrer David,Nichols Chris,Rollin Jean-Marc,Vanhille Ken +6 more
Journal ArticleDOI
Earth science and applications from space: A community assessment and strategy for the future
TL;DR: The Space Studies Board, in consultation with other units of the U.S. National Research Council (NRC), has begun a study to generate prioritized recommendations from the Earth and environmental science and applications community regarding a systems approach to the space-based and complimentary observations that encompasses the research programs of NASA and the related operational programs of the National Oceanic and Atmospheric Administration (NOAA) as mentioned in this paper.
Journal ArticleDOI
Micro-Coaxial Fed 18 to 110 GHz Planar Log-Periodic Antennas With RF Transitions
TL;DR: In this paper, the design, fabrication, measurement setup, and performance of a surface micromachined 18 to 110 GHz planar log-periodic antenna is discussed, and three measurement transitions are developed to characterize the impedance and far-field performance of the antenna over the full operational bandwidth.