Metasurface Antenna Design for Beam Steering Applications
Summary
Metasurface antennas employ two-dimensional arrays of subwavelength scatterers to exert fine-tuned control over the phase, amplitude and polarisation of incident electromagnetic waves. By engineering spatial phase gradients across the surface, these devices achieve precise beam steering without any mechanical motion. Reconfigurable elements such as varactor and PIN diodes enable dynamic modulation of reflection or transmission phase profiles, offering electronic scanning, rapid beam switching and multibeam operation. Advances in materials and fabrication have extended functional bandwidths from microwave through millimetre-wave regimes, underpinning emerging 5G and forthcoming 6G infrastructures. Metasurface beam steering enhances link reliability in urban and mobile environments, reduces system complexity and power consumption compared with conventional phased arrays, and facilitates spectrum sharing. Current efforts focus on broadening operational bandwidth, improving steering resolution and developing cost-effective mass-production techniques to support adaptive, high-capacity wireless and satellite communication platforms worldwide.
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Metasurface Antenna Design for Beam Steering Applications publication trend
The graph below shows the total number of articles in metasurface antenna design for beam steering applications across all publications each year (not limited to Nature Index journals).
Technical terms
Metasurface: A two-dimensional array of subwavelength elements engineered to manipulate electromagnetic wavefronts.
Phase discontinuity: An abrupt change in phase imposed at a surface to redirect propagating waves.
Beam steering: Electronic control of the main radiation direction of an antenna without mechanical movement.
Varactor diode: A voltage-tunable semiconductor device used to adjust the capacitance and thus the phase response of a metasurface element.
PIN diode: A semiconductor diode with intrinsic, p-type and n-type regions, used as a fast RF switch to reconfigure metasurface properties.
References
- A Metasurfaces Review: Definitions and Applications. Applied Sciences (2019).
- Highly efficient beam steering with a transparent metasurface.. Optics Express (2013).
- Design of a PIN Diode‐Based Reconfigurable Metasurface Antenna for Beam Switching Applications. International Journal of Antennas and Propagation (2019).
- Innovative Reconfigurable Metasurface 2-D Beam-Steerable Reflector for 5G Wireless Communication. Electronics (2020).
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