Phased Array Antenna Technologies and Applications
Summary
Phased array antennas consist of multiple radiating elements whose individual phases can be electronically adjusted to control the direction and shape of the radiated beam. This capability underpins versatile applications in radar, satellite communications, terrestrial wireless networks and electronic warfare. Recent advances in element design, feeding networks and signal processing have extended bandwidths, improved beam-scanning ranges and reduced sidelobe levels. Innovations such as tightly coupled dipole arrays and wideband Vivaldi elements have enabled multi-octave operation, while integration of active transmit/receive modules offers compact, high-efficiency systems. Emerging materials and metasurface superstrates further enhance impedance matching and angular coverage. Collectively, these developments address global demands for high-capacity links, agile sensing platforms and customisable apertures in both fixed and deployable configurations.
Research from Nature Portfolio
Recent studies have introduced analytical models for tightly coupled dipole arrays loaded with metasurface superstrates to improve wideband performance and scanning capability. By integrating a metasurface layer above the array, researchers have demonstrated significant enhancements in impedance bandwidth and maximum scan angles without resorting to full-wave simulations. The proposed transmission-line model accelerates design by offering rapid, accurate predictions of scan impedance, facilitating optimisation of wideband arrays for radar and communication systems.
Research from all publishers
A novel dual-polarised metal Vivaldi array has been developed to cover 6–18 GHz, employing independent structural elements that eliminate resonance artefacts and deliver high aperture efficiency across the band. An 8×8 prototype with active transmit/receive modules achieved gains up to 24.8 dBi and beam-scanning without grating lobes. Separately, a modular Ka-band Vivaldi array integrates connector-less assembly of antenna and RF modules, allowing scalable 4×4 arrays to beam-steer ±60° with uniform amplitude and phase distribution. In addition, a comprehensive review on ultra-wideband phased arrays summarises design strategies for multi-octave operation, covering Vivaldi, spiral and sinuous elements, and addresses challenges such as mutual coupling, grating lobe suppression and active-impedance matching for applications in radar, 5G and electronic warfare.
Phased Array Antenna Technologies and Applications publication trend
The graph below shows the total number of articles in phased array antenna technologies and applications across all publications each year (not limited to Nature Index journals).
Technical terms
Phased array antenna: An assembly of radiating elements with electronically controlled phase shifts to steer and shape the radiated beam without mechanical movement.
Beam steering: The agile redirection of the main lobe of an antenna’s radiation pattern through phase or amplitude control of individual elements.
Metasurface superstrate: A structured layer placed above an antenna aperture to manipulate electromagnetic waves for enhanced bandwidth and scanning performance.
Tightly coupled dipole array (TCDA): A broadband antenna architecture using closely spaced dipole elements and matching layers to achieve wide impedance bandwidth and large scanning angles.
Vivaldi element: A tapered slot antenna design offering ultra-wideband performance, commonly used in phased arrays for its broad frequency coverage and low dispersion.
References
- Dual-Polarized Metal Vivaldi Array Using Independent Structural Elements. Sensors (2024).
- Analysis of tightly-coupled dipole phased array antennas with metasurface superstrate. Scientific Reports (2023).
- Review on Ultra-Wideband Phased Array Antennas. IEEE Access (2021).
- A Modular Dual-Polarized Ka-Band Vivaldi Antenna Array. IEEE Access (2022).
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