Small Wideband Planar Scanning Arrays
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The need for novel, small wideband arrays is being driven by the ever shrinking size of communication platforms. The complexity of achieving wideband performance in a small array of finite number requires that several constraints be considered simultaneously; these considerations include the bandwidth of the array elements, element spacing with optimal coupling and avoidance of grating lobes and development of a wideband feeding network. This project is intended to provide insight into the critical barriers to achieve wideband scanning performance and to develop new methodologies for realizing it.
Example Approaches
The technical opportunities of this research could include:
- Organizing all relevant literature and related patents on small wideband scanning in order to obtain an understanding of the state-of-the-art and a baseline by which to compare array performance
- Designing the individual array elements resulting in the largest possible impedance bandwidths while maintaining sufficient spacing to avoid grating lobes. These elements should be considerably thinner than those typically employing air substrates or artificial magnetic ground planes.
- Considering the effects of element coupling to increase the array bandwidth beyond that of the individual elements.
- Building several planar scanning array prototypes with wideband performance.
- Developing a low-profile wideband feed network
Good examples include the tightly coupled dipole arrays recently published out of the Ohio State University Electroscience Laboratory and the planar ultrawideband modular antenna arrays published out of the University of Massachusetts, Amherst as potential candidate approaches.
- Citizenship: U.S. Citizen Only
- Degree: Doctoral Degree.
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