Dual-Band Asymmetric Leaky-Wave Antennas for Circular Polarization and Simultaneous Dual Beam Scanning
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Date
2021
Journal Title
Journal ISSN
Volume Title
Publisher
Institute of Electrical and Electronics Engineers Inc.
Abstract
In this article, two configurations of novel dual-band half-mode substrate integrated waveguide (HMSIW) leaky-wave antennas are presented. The first proposed antenna radiates linearly polarized (LP) waves in the lower band and circularly polarized waves in the upper band when the unit cells are cascaded sequentially. The second antenna, where the sidewall via of the HMSIW unit cells is connected alternatingly, provides simultaneous dual beams with different polarization in the upper operational band in addition to the LP beam in the lower operational band. The unit cells of the two antennas are analyzed in terms of their dispersion behaviors. Finally, the performance of both the antennas is experimentally verified. © 1963-2012 IEEE.
Description
Keywords
Circular polarization, Scanning antennas, Substrate integrated waveguides, Circularly polarized waves, Dispersion behavior, Dual Band, Dual beam, Half-mode substrate integrated waveguides, Leaky wave antennas, Linearly polarized, Unit cells, Traveling wave antennas
Citation
IEEE Transactions on Antennas and Propagation, 2021, 69, 4, pp. 1843-1852