TY - GEN
T1 - Experimental Demonstration of the Huygens' Box
T2 - 2018 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting (APSURSI 2018)
AU - Wong, Alex M. H.
AU - Eleftheriades, George V.
PY - 2018/7
Y1 - 2018/7
N2 - Applying the electromagnetic equivalence principle, we synthesize the necessary electric and magnetic currents along a boundary enclosed by an active Huygens' metasurface, and thereby generate an arbitrary waveform within the area enclosed. We call our contraption the Huygens' box. In this paper, we report the generation of travelling waves inside the Huygens' box: we show calculations, full-wave simulation results and experimental measurements which demonstrate the successful generation of plane waves which travel at an arbitrary direction inside a metallic cavity. These plane waves form unconventional modes in that (i) their existence is forbidden in a typical cavity, and (ii) their linear combination can be used to construct an arbitrary waveform inside the cavity. The ability to construct an arbitrary waveform within an enclosed area by controlling its boundary is a novel concept, with dramatic applications in RF imaging, subwavelength focusing, scattering measurement and waveform control in general.
AB - Applying the electromagnetic equivalence principle, we synthesize the necessary electric and magnetic currents along a boundary enclosed by an active Huygens' metasurface, and thereby generate an arbitrary waveform within the area enclosed. We call our contraption the Huygens' box. In this paper, we report the generation of travelling waves inside the Huygens' box: we show calculations, full-wave simulation results and experimental measurements which demonstrate the successful generation of plane waves which travel at an arbitrary direction inside a metallic cavity. These plane waves form unconventional modes in that (i) their existence is forbidden in a typical cavity, and (ii) their linear combination can be used to construct an arbitrary waveform inside the cavity. The ability to construct an arbitrary waveform within an enclosed area by controlling its boundary is a novel concept, with dramatic applications in RF imaging, subwavelength focusing, scattering measurement and waveform control in general.
KW - antennas
KW - diffraction
KW - metasurface
KW - super-resolution
KW - waveform synthesis
UR - http://www.scopus.com/inward/record.url?scp=85061924542&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85061924542&origin=recordpage
U2 - 10.1109/APUSNCURSINRSM.2018.8609438
DO - 10.1109/APUSNCURSINRSM.2018.8609438
M3 - RGC 32 - Refereed conference paper (with host publication)
T3 - 2018 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting, APSURSI 2018 - Proceedings
SP - 1893
EP - 1894
BT - 2018 IEEE Antennas and Propagation Society International Symposium - Proceedings
PB - IEEE
Y2 - 8 July 2018 through 13 July 2018
ER -