Detailed Characterization of a Lenster-A mm-Wave Flat Lens

Detailed Characterization of a Lenster-A mm-Wave Flat Lens

We perform detailed free-space measurements of a previously published metal-mesh thin flat gradient index lens using a vector network analyzer. Direct measurements of the transmission and phase of the lens are made over the frequency band of 75-220 GHz, including off-axis performance. Beam patterns...

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Veröffentlicht in:IEEE transactions on antennas and propagation 2019-05, Vol.67 (5), p.3178-3184
Hauptverfasser: Moseley, Paul, Savini, Giorgio, Saenz, Elena, Zhang, Jin, Ade, Peter A. R.
Format: Artikel
Sprache:eng
Schlagworte:
Absorption
Broadband
Extraterrestrial measurements
Frequencies
Frequency measurement
Frequency-selective surface
gradient index (GRIN)
Indexes
lens
Lenses
Metamaterials
Millimeter waves
Network analysers
Refractive index
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Beschreibung
Zusammenfassung:We perform detailed free-space measurements of a previously published metal-mesh thin flat gradient index lens using a vector network analyzer. Direct measurements of the transmission and phase of the lens are made over the frequency band of 75-220 GHz, including off-axis performance. Beam patterns at 110 and 160 GHz show good agreement with the Airy pattern expectation and demonstrate its relative broadband performance. We also show that the beam profiles are not affected when it is rotated by ±6° with the receiver demonstrating its usability under nonnormal illumination.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2019.2902435