Abstract
In order to fulfill the exponential increase in the demand of high-speed wireless links, future XG wireless networks will be developed at higher carrier signal frequencies, reaching the hundreds of gigahertz. In this contribution, a leaky-wave-fed HDPE lens antenna working at ${G}$ -band which can be useful for future XG communications is presented. The proposed lens design enables the generation of up to 40 beams, with gains higher than 30 dB. Analytical tools have been applied to optimize the lens aperture efficiency, validating the results via full-wave simulations. The reached aperture efficiency for the broadside beam is higher than 80% over a 44% relative bandwidth. The measurement results for a fabricated prototype show excellent agreement with the simulated performance.
Highlights
N OWADAYS, wireless communication systems are experimenting a revolution, driven by new data-demanding applications
The wave-propagation spreading factor proportionally increases to the square of the frequency, and moving to higher frequency bands requires the use of high-gain antennas (>30 dB) to fulfill the link budget
A new methodology for the analysis and design of elliptical lenses illuminated by resonant leaky-wave antenna (LWA) is introduced, based on an analysis of the lens antenna in reception
Summary
N OWADAYS, wireless communication systems are experimenting a revolution, driven by new data-demanding applications. Larger bandwidth designs are presented using double bow-tie antennas, in [10], and nonresonant leaky-wave antennas, in [11] In both cases, the feed pattern which illuminates the lens surface does not allow for reaching high aperture efficiencies and higher sidelobe levels are reported. A new methodology for the analysis and design of elliptical lenses illuminated by resonant LWAs is introduced, based on an analysis of the lens antenna in reception This approach allows maximizing the aperture efficiency of the lens antenna by performing a field match between the geometrical optics frequency-independent field and the LWA field, avoiding more time-consuming parametric optimizations based on full wave (FW) or physical optics (PO).
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