TY - JOUR
T1 - Axially modulated cylindrical metasurface leaky-wave antennas
AU - Ramalingam, Subramanian
AU - Balanis, Constantine
AU - Birtcher, Craig R.
AU - Pandi, Sivaseetharaman
AU - Shaman, Hussein N.
N1 - Funding Information:
Manuscript received October 27, 2017; accepted November 21, 2017. Date of publication November 27, 2017; date of current version January 10, 2018. This work was supported in part by the research contract between Arizona State University and King Abdulaziz City for Science and Technology. (Corresponding author: Constantine A. Balanis.) S. Ramalingam, C. A. Balanis, and C. R. Birtcher are with the School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe, AZ 85287 USA (e-mail: Subramanian.Ramalingam@asu.edu; balanis@asu.edu; Craig.Birtcher@asu.edu).
Publisher Copyright:
© 2017 IEEE.
PY - 2018/1
Y1 - 2018/1
N2 - This letter addresses the design and analysis of cylindrical one-dimensional leaky-wave antennas (LWAs) in which the surface impedance is modulated along the axis of the cylinder. The surface impedance modulation function for these LWAs is obtained using the holographic principle. The effect of the curvature for the radiation characteristics of the antenna are explained by projecting the curved aperture of the antenna onto a planar aperture. An analytical model is developed to predict the radiation characteristics of the antenna. The utilization of these antennas for automotive radar applications is examined in some detail. The effect of painting the antenna surface, and used as a cover, is predicted using a transmission line model.
AB - This letter addresses the design and analysis of cylindrical one-dimensional leaky-wave antennas (LWAs) in which the surface impedance is modulated along the axis of the cylinder. The surface impedance modulation function for these LWAs is obtained using the holographic principle. The effect of the curvature for the radiation characteristics of the antenna are explained by projecting the curved aperture of the antenna onto a planar aperture. An analytical model is developed to predict the radiation characteristics of the antenna. The utilization of these antennas for automotive radar applications is examined in some detail. The effect of painting the antenna surface, and used as a cover, is predicted using a transmission line model.
KW - Conformal antennas
KW - Holography
KW - Leaky-wave antennas (LWAs)
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U2 - 10.1109/LAWP.2017.2777819
DO - 10.1109/LAWP.2017.2777819
M3 - Article
AN - SCOPUS:85035791075
SN - 1536-1225
VL - 17
SP - 130
EP - 133
JO - IEEE Antennas and Wireless Propagation Letters
JF - IEEE Antennas and Wireless Propagation Letters
IS - 1
M1 - 8120020
ER -