A Fast and Accurate Method of Synthesizing X-Wave Launchers by Metallic Horns

High Speed and Resilient Wireless Interconnects in the Near Field

“…The former presents a standard WR-10 rectangular waveguide input and transforms the TE10 mode into the output TE01 circular waveguide mode, which acts as input for the spline horn. The profile of the horn is designed as described in [11] to synthetize the TE02 circular waveguide mode over the radiating aperture with a 30 mm diameter. The imposed aperture field distribution provides a Bessel beam with an axicon angle of 15° and a non-diffractive range of about 60 mm (2 times the launcher's diameter).…”

“…During recent years, the generation of Bessel beams at millimeter waves has attracted a lot of attention and one may find different types of launchers in the open literature. In particular, it is worth mentioning radial waveguides loaded by metasurfaces [3]- [5], radial line slot arrays (RLSA) [6], [7], arrays of patches [8], lenses [9], [10], and spline-profile horns [11]. The non-diffractive behavior of Bessel beams and their capability to provide a robust link may be used in various applications such as wireless personal area networks (WPAN), kiosk downloading, future data centers, wireless power transfer and near-field chip-to-chip communications [12]- [14].…”

“…This work explores the possibility of establishing nearfield links for robust communications resilient to metallic obstructions at W-band (75-110 GHz) by exploiting the peculiar non-diffractive and self-healing properties of Bessel beams. Metallic spline-profile horns, as those described in [11], will be used as transmitting and receiving devices in the link to avoid dielectric losses at such high frequencies. The adopted launchers present a radiating aperture with a diameter of 30 mm (9 0, with 0 being the free space wavelength at 90 GHz).…”

Leaky-Wave Analysis of TM-, TE-, and Hybrid-Polarized Aperture-Fed Bessel-Beam Launchers for Wireless-Power-Transfer Links

“…Devices capable of radiating such beams are also known as launchers and are commonly distinguished between resonant and wideband launchers (see, e.g., [10], [11], and references therein). The former have the advantage of being compact in size, but typically show a narrow fractional bandwidth (FBW) due to their resonant nature [12], [13], [14], whereas the latter present a wideband behavior at the expense of an electrically large aperture size [15], [16], [17], [18], [19] and/or nonplanar, lens-like designs [20], [21], [22], [23], [24].…”