In this paper, a novel technology based on double-layer metasurfaces is proposed in order to broaden the bandwidth of microstrip antennas, which has been verified in X-band linearly polarised and circularly polarised antennas. Referring to the conventional metasurface antenna that employs slot-coupled feeding, these designs add an extra metasurface between the radiation patch and the ground plane so as to establish dual resonance modes, TM10 and TM20. Following the adoption of the composite right/left-handed transmission lines principle, this technique aims to adjust the propagation constant in the right-hand region by introducing parallel inductors and capacitors to widen the dual resonant frequencies' interval, thereby realising a broadband antenna. In addition, the interlayer metasurface may also be utilised as a director to balance the E-field of the radiation patch. A linearly polarised double-layer metasurface antenna with a size of 0.80.80.058 (wavelength in free space at the centre frequency) is filled with F4B substrate with a dielectric constant of 2.2. It finally realises an impedance matching bandwidth (VSWR2) from 8.41 to 11.67 GHz, occupying about 32.47 of the centre frequency. This circularly polarised antenna attains both an impedance matching bandwidth of 32.44 (i.e. 8.29–11.5 GHz) and an axial-ratio bandwidth of 19.72 (i.e. 9.6–11.7 GHz).

Meng Guo

Wei Wang

Ping Huang

IET Microwaves Antennas & Propagation

Topics include, but are not limited to:

Microwave circuits including RF, microwave and millimetre-wave amplifiers, oscillators, switches, mixers and other components implemented in monolithic, hybrid, multi-chip module and other technologies. Papers on passive components may describe transmission-line and waveguide components, including filters, multiplexers, resonators, ferrite and garnet devices. For applications, papers can describe microwave sub-systems for use in communications, radar, aerospace, instrumentation, industrial and medical applications. Microwave linear and non-linear measurement techniques.

Antenna topics including designed and prototyped antennas for operation at all frequencies; multiband antennas, antenna measurement techniques and systems, antenna analysis and design, aperture antenna arrays, adaptive antennas, printed and wire antennas, microstrip, reconfigurable, conformal and integrated antennas.

Computational electromagnetics and synthesis of antenna structures including phased arrays and antenna design algorithms.

Radiowave propagation at all frequencies and environments.

Current Special Issue. Call for papers: 
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This journal covers topics including, but not limited to:

Microwave circuits, which encompass RF, microwave, and millimeter-wave amplifiers, oscillators, switches, mixers, and other components implemented in monolithic, hybrid, multi-chip module, and other technologies. Papers on passive components may describe transmission line and waveguide components, including filters, multiplexers, resonators, ferrite, and garnet devices. For applications, papers can describe microwave subsystems for use in communications, radar, aerospace, instrumentation, industrial, and medical applications. Microwave linear and non-linear measurement techniques.

Antenna topics include designed and prototyped antennas for operation at all frequencies; multiband antennas, antenna measurement techniques and systems, antenna analysis and design, aperture antenna arrays, adaptive antennas, printed and wire antennas, microstrip, reconfigurable, conformal, and integrated antennas.

Computational electromagnetics and synthesis of antenna structures, including phased arrays and antenna design algorithms.

Radiowave propagation at all frequencies and environments.

Current Special Issue: Call for papers:
Metrology for 5G Technologies - https://digital-library.theiet.org/files/IET_MAP_CFP_M5GT_SI2.pdf

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Category	Quartile
计算机科学	4
计算机科学, 工程电子与电气	4
计算机科学, 电信学	4

Double‐layer metasurface‐based low profile broadband X‐band microstrip antenna

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