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Toward a tunable mode-mixing cavity for computational imaging

Publication ,  Conference
Sleasman, T; Imani, MF; Gollub, JN; Smith, DR
Published in: 2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Proceedings
October 25, 2016

A mode-mixing cavity, consisting of an electrically-large rectangular cavity with one deformed corner, supports distinct modes as a function of driving frequency. Perforating one side of this cavity, the modes formed within can be projected into an imaging domain, multiplexing the scene's spatial content into backscattered signals that is post-processed to obtain high-quality images. While this device has shown great promise as a platform for computational imaging at microwave frequencies, its premise necessitates a large bandwidth, a requirement that complicates circuit design and may not be readily available. In this presentation, we propose and report preliminary experimental results for a cavity containing a tunable artificial impedance surface in one of its walls. By varying the electromagnetic response of the cavity's boundary the field distribution within the cavity can be altered, thus generating distinct radiation patterns without a large bandwidth.

Duke Scholars

Published In

2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Proceedings

DOI

ISBN

9781509028863

Publication Date

October 25, 2016

Start / End Page

1901 / 1902
 

Citation

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Sleasman, T., Imani, M. F., Gollub, J. N., & Smith, D. R. (2016). Toward a tunable mode-mixing cavity for computational imaging. In 2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Proceedings (pp. 1901–1902). https://doi.org/10.1109/APS.2016.7696657
Sleasman, T., M. F. Imani, J. N. Gollub, and D. R. Smith. “Toward a tunable mode-mixing cavity for computational imaging.” In 2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Proceedings, 1901–2, 2016. https://doi.org/10.1109/APS.2016.7696657.
Sleasman T, Imani MF, Gollub JN, Smith DR. Toward a tunable mode-mixing cavity for computational imaging. In: 2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Proceedings. 2016. p. 1901–2.
Sleasman, T., et al. “Toward a tunable mode-mixing cavity for computational imaging.” 2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Proceedings, 2016, pp. 1901–02. Scopus, doi:10.1109/APS.2016.7696657.
Sleasman T, Imani MF, Gollub JN, Smith DR. Toward a tunable mode-mixing cavity for computational imaging. 2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Proceedings. 2016. p. 1901–1902.

Published In

2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Proceedings

DOI

ISBN

9781509028863

Publication Date

October 25, 2016

Start / End Page

1901 / 1902