Innovative UWB phase shifters using groove gap-waveguide technology inspired by metasurfaces for beamforming networks operating at 100 GHz
This paper presents the design of four phase shifters (+45°, +90°, +135°, +180°) for matrix-based beamforming networks (MB-BFN) in mm-wave antenna arrays. Utilizing groove gap-waveguide (GGW) technology with unequal-width, equal-length transmission lines, the design incorporates metasurface principl...
| Main Authors: | , , , , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
IEEE
2025
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| Subjects: | |
| Online Access: | https://repository.londonmet.ac.uk/10090/1/Accepted%20Manuscript_APMC%202024-ID%201571056782.pdf |
| Summary: | This paper presents the design of four phase shifters (+45°, +90°, +135°, +180°) for matrix-based beamforming networks (MB-BFN) in mm-wave antenna arrays. Utilizing groove gap-waveguide (GGW) technology with unequal-width, equal-length transmission lines, the design incorporates metasurface principles to achieve perfect magnetic conductor (PMC) boundary conditions. The metasurface features a "bed-of-nails" structure, where metal pins are connected to a bottom layer and spaced <λ/4 from a top plate. This configuration provides a UWB stop-band over the 80–110 GHz spectrum, ensuring effective phase shifting at 100 GHz within the ultra-wideband range. |
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