TY - GEN
T1 - Application of near-field phase transformation to steer the beam of high-gain antennas in two dimensions
AU - Afzal, Muhammad U.
AU - Esselle, Karu P.
PY - 2017
Y1 - 2017
N2 - Low-cost and efficient methods of steering highly directive antenna beams will play a major role in emerging communication systems. This paper outlines a method based on near-field phase transformation, to steer the beam of a fixed high-gain antenna. It has been implemented and tested using two rotating metasurfaces placed at sub-wavelength spacing in the near-field region of a base antenna. This method yields low-profile and planar antenna systems that can steer beam to any direction within a large conical region. Unlike mechanically-steered dish antennas, the height and volume of the antenna system remain constant while steering. Only two thin metasurface require rotation; the rest of the antenna system, including the high-gain base antenna, is totally stationary. Due to lack of active devices, these antenna systems are more efficient, do not suffer from thermal issues and non-linear distortion, and can handle more power.
AB - Low-cost and efficient methods of steering highly directive antenna beams will play a major role in emerging communication systems. This paper outlines a method based on near-field phase transformation, to steer the beam of a fixed high-gain antenna. It has been implemented and tested using two rotating metasurfaces placed at sub-wavelength spacing in the near-field region of a base antenna. This method yields low-profile and planar antenna systems that can steer beam to any direction within a large conical region. Unlike mechanically-steered dish antennas, the height and volume of the antenna system remain constant while steering. Only two thin metasurface require rotation; the rest of the antenna system, including the high-gain base antenna, is totally stationary. Due to lack of active devices, these antenna systems are more efficient, do not suffer from thermal issues and non-linear distortion, and can handle more power.
UR - http://www.scopus.com/inward/record.url?scp=85042295079&partnerID=8YFLogxK
U2 - 10.1109/APUSNCURSINRSM.2017.8073016
DO - 10.1109/APUSNCURSINRSM.2017.8073016
M3 - Conference proceeding contribution
AN - SCOPUS:85042295079
SN - 9781538608982
SP - 1947
EP - 1948
BT - 2017 IEEE Antennas and Propagation Society International Symposium
PB - Institute of Electrical and Electronics Engineers (IEEE)
CY - Piscataway, NJ
T2 - 2017 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, APSURSI 2017
Y2 - 9 July 2017 through 14 July 2017
ER -