A study of the characteristics of microstrip reflectarrays as a function of the number and type of basis functions
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microstrip reflectarrays basis functions relection↗
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Results for “reflectarray”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Historical review of the printed reflectarray antenna
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antenna reflectarray review↗
A dual-band reflectarray for X- and Ka-bands
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reflectarray dual band antenna x-band ka-band↗
Microstrip reflectarrays with multi-layer grounded substrates and superstrates
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reflectarray microstrip multi-layer printed antenn↗
An inflatable/self-rigidizable structure for the reflectarray antenna
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inflatable reflectarray antenna↗
Element design methodology for printed reflectarray antennas
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reflectarray antenna radiating element↗
On the Bandwidth of Microstrip Reflectarrays
Several factors that govern the bandwidth performance of the.
microstrip reflectarrays bandwidth antenna array m↗
Bandwidth Enhancement Techniques for Microstrip Reflectarray
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flat reflector printed reflectarray narrow bandwid↗
3-Meter Ka-Band Inflatable Microstrip Reflectarray
In order to meet the increasingly stringent budget constraints for space missions, NASA is currently developing lightweight spacecrafts with reduced stowed volume but with increased capabilities.
inflatable reflectarray microstrip antenna↗
The design of H- and V-pol waveguide slot array feeds for a scanned offset dual-polarized reflectarray
While the design of waveguide slot arrays in not new, this particular design effort shows that very good results can be achieved on a first attempt using established slot array design techniques and commercial software for the waveguide power divider network. The presentation will discuss this design process in detail.
array↗
A dual-band reflectarray for X- and Ka-bands
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antenna↗
Inflatable Microstrip Reflectarray Antennas at X and Ka-band Frequencies
Inflatable antenna technology is being developed by JPL/NASA to enable the capabilities of low mass, high packaging efficiency, and low-cost deployment for future spacecraft high-grain and large aperture antennas.
Inflatable↗
Concept for a Low-Cost, High-Efficiency Precipitation Radar System Based on Ferroelectric Reflectarray Antenna
This work proposes a concept on a novel scanning phased array, based on thin film ferroelectric phase shifters, for an X-band precipitation monostatic radar.
Romanofsky, Robert↗
Evaluation of the Reflection Coefficient of Microstrip Elements for Reflectarray Antennas
Basis functions were studied and identified that provide efficient and accurate solutions for the induced patch currents and the reflection phase in microstrip reflect arrays. The integral equation of an infinite array of microstrip elements in the form of patches or crossed dipoles excited by a uniform plane wave is solved by the method-of-moments. Efficient choices of entire domain basis functions that yield accurate results have been described.
Rengarajan, Sembiam↗
Thermal Deformation and RF Performance Analyses for the SWOT Large Deployable Ka-Band Reflectarray
A large deployable antenna technology for the NASA Surface Water and Ocean Topography (SWOT) Mission is currently being developed by JPL in response to NRC Earth Science Tier 2 Decadal Survey recommendations. This technology is required to enable the SWOT mission due to the fact that no currently available antenna is capable of meeting SWOT's demanding Ka-Band remote sensing requirements. One of the key aspects of this antenna development is to minimize the effect of the on-orbit thermal distortion to the antenna RF performance. An analysis process which includes: 1) the on-orbit thermal analysis to obtain the temperature distribution; 2) structural deformation analysis to get the geometry of the antenna surface; and 3) the RF performance with the given deformed antenna surface has been developed to accommodate the development of this antenna technology. The detailed analysis process and some analysis results will be presented and discussed by this paper.
thermal distorsion↗