Design of TE-Polarized Bessel Antenna in Microwave Range Using Leaky-Wave Modes

• Published in: IEEE transactions on antennas and propagation Vol. 66; no. 1; pp. 32 - 41
• Main Authors: Lu, Ping, Voyer, Damien, Breard, Arnaud, Huillery, Julien, Allard, Bruno, Lin-Shi, Xuefang, Yang, Xue-Song
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.01.2018; The Institute of Electrical and Electronics Engineers, Inc. (IEEE); Institute of Electrical and Electronics Engineers
• Subjects: Antenna measurements; Beams (radiation); Bessel beams; Electric power; Engineering Sciences; Ground plane; Impedance; leaky-wave modes; Magnetic resonance; Mathematical model; Microwave antennas; Planar waveguides; Substrates; transverse electric (TE)-polarized; Wave dispersion; Bessel beams; leaky-wave modes; TE-polarized
• ISSN: 0018-926X; 1558-2221
• DOI: 10.1109/TAP.2017.2768584

In this paper, we present a transverse electric (TE)-polarized Bessel-beam antenna in the microwave range based on a leaky radial waveguide. According to the dispersion equation, an inductive sheet over a ground plane is needed. To achieve the inductive sheet, a grid structure printed on a dielectric substrate is designed. Besides, the radial waveguide is coaxially fed with a quasi-loop shaped structure to excite TE mode. The proposed antenna is investigated by simulation and measurement. In the measurement, a small loop is used to probe near magnetic field, and accurate measured magnetic intensity profiles are presented. The measurements show that TE-polarized Bessel beams can be launched within the nondiffractive range of 145 mm (<inline-formula> <tex-math notation="LaTeX">2.803\lambda _{0} </tex-math></inline-formula>) at 5.8 GHz.