A Lens Antenna with Reconfigurable Beams for mmWave Wind Profile Radar

Wind profile radar systems require antennas with multiple radiation beams for detecting wind velocity, as well as with a low sidelobe and dual polarization for enhancing the sensitivity for the weak signal reflected from the turbulence. This paper proposes a lens antenna operating at 24 GHz with fou...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2022-04, Vol.22 (9), p.3148
Main Authors: Ding, Yafei, Zou, Ziwen, Luo, Yong, Yang, Guangli
Format: Article
Language:English
Subjects:
Air-turbines
Altitude
Antennas
Antennas (Electronics)
Clean technology
Climate change
Communication
Design
dielectric lens antenna
Green technology
High gain
Horn antennas
Lens antennas
low sidelobe
Millimeter waves
Power efficiency
Radar
Radar beams
Radar equipment
Radar systems
Radiation
reconfigurable beams
Reconfiguration
Sidelobe reduction
Sidelobes
weak signal
Wind profiles
Wind speed
wind turbulence
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Summary:Wind profile radar systems require antennas with multiple radiation beams for detecting wind velocity, as well as with a low sidelobe and dual polarization for enhancing the sensitivity for the weak signal reflected from the turbulence. This paper proposes a lens antenna operating at 24 GHz with four reconfigurable beams for wind profile radars. This lens antenna includes 2 × 2 corrugated horn antennas for radiating 24 GHz waves in two polarizations, and the dielectric lens for modulating four radiation beams with a high gain and low sidelobe. Experiments demonstrate that this lens antenna can realize reconfigurable beams with deflections of ±15° in dual polarizations, meanwhile with the gain of 30.58 dBi and the sidelobe of -20 dB. This proposed lens antenna can be applied to mmWave wind profile radars of wind turbines for enhancing wind power efficiency.
ISSN:1424-8220
1424-8220
DOI:10.3390/s22093148