A Millimeter-Wave Fabry–Perot Cavity Antenna With Unidirectional Beam Scanning Capability for 5G Applications

Goudarzi, Azita; Honari, Mohammad Mahdi; Mirzavand, Rashid

doi:10.1109/tap.2021.3118796

Cited by 20 publications

(8 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…24 shown below. Radiation patterns can be titled mechanically as illustrated by shaping the access point chassis or by defining phase gradients on the meta-lens surface similar to the principle explained in [43].…”

Section: Proposed Meta-lens Possible Applicationmentioning

confidence: 99%

Wideband 5G Antenna Gain Enhancement Using a Compact Single-Layer Millimeter Wave Metamaterial Lens

et al. 2023

View full text Add to dashboard Cite

This paper presents a very compact, wideband, and enhanced-gain antenna for 5G applications. A simple single-layer millimeter wave (mm-wave) metamaterial lens (meta-lens) is used to improve the gain, aperture efficiency, and gain bandwidth of a slotted-patch antenna over a wide range of frequencies from 25 GHz to 31 GHz. The lens exhibits a metamaterial negative refractive index behavior, which is attributed to a substantial gain enhancement of around 4-5 dBi over the whole band compared to the gain values of the slotted patch antenna alone. The lens's unit cell comprises a simple single-layer split ring resonator (SRR) whose dimensions are carefully chosen to improve transmitted power and suppress absorbed and reflected power. The meta-lens consists of 8×8 subwavelength SRR unit cells. Each cell has an area of 1.6×1.6 mm 2 , it is located in the near-field region closely above a slotted patch antenna to produce a total antenna size of 12.8 ×12.8 ×7.27mm 3 ( 1.2 λ × 1.2 λ × 0.68 λ, where λ is the free space wavelength at 28 GHz). The maximum gain of the proposed antenna is 12.7 dBi, the 1 dB gain bandwidth is 18%, the maximum aperture efficiency is 92%, and the -10 dB impedance bandwidth (10 dB B.W.) is 17%. This excellent combination of essential metrics is hard to realize at mm-wave using narrowband antenna structures (microstrip patch antennas), and the aperture efficiency is the highest thus far for such a class of antennas.INDEX TERMS Wideband 5G antenna, Gain enhancement, Aperture efficiency, Negative refractive index, Millimeter wave meta-lens.

show abstract

Section: Proposed Meta-lens Possible Applicationmentioning

confidence: 99%

Wideband 5G Antenna Gain Enhancement Using a Compact Single-Layer Millimeter Wave Metamaterial Lens

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Although microstrip and substrate integrated waveguide (SIW) antennas are examples of this type, they are disadvantageous in high-gain planar antenna applications because of their high dielectric and ohmic losses. [7][8][9] Microstrip antennas also have limited bandwidth. Various methods have been proposed to increase the bandwidth.…”

Section: Introductionmentioning

confidence: 99%

“…Planar antennas are preferred in mmWave applications because of their compact size and volume. Although microstrip and substrate integrated waveguide (SIW) antennas are examples of this type, they are disadvantageous in high‐gain planar antenna applications because of their high dielectric and ohmic losses 7–9 . Microstrip antennas also have limited bandwidth.…”

Section: Introductionmentioning

confidence: 99%

Broadband, high gain 2 × 2 subarray and 2 × 8 cavity‐backed antenna arrays for 5G mmWave applications

Asci

2023

Micro & Optical Tech Letters

View full text Add to dashboard Cite

In this study, linearly polarized 2 × 2 subarray and 2 × 8 element cavity‐backed antennas are proposed for 5G millimeter‐wave (mmWave) applications. Initially, the 2 × 2 subarray is designed, manufactured, and tested. According to the measured results, the 2 × 2 subarray has a wide fractional bandwidth (FBW) of 24.7% (|S11| < −10 dB, 22.3‒28.6 GHz) which covers the main spectrum allocations for the 5G cellular network. A broadband 1 × 4 corporate feed network is designed, which is challenging and crucial, to form 2 × 8 antenna array. The experimental results show that the final 2 × 8 antenna array has a wide FBW of 23% (|S11| < −10 dB, 22.3‒28 GHz), with a boresight gain of 20.5 dBi. Throughout the operating band, a stable gain of 19.5 ± 1 dBi is achieved. The 2 × 8 antenna array has good and stable radiation characteristics; SLLs are less than −13 dB and XPol is better than −20 dB for both E‐ and H‐planes across the entire operating frequency. Stubs are added between adjacent subarrays in the E‐plane to suppress mutual coupling and to improve gain of 2 × 8 antenna, which results in broadband impedance characteristics. The size of the 2 × 8 antenna array is 6.3λο × 8.1λο × 1.3λο, where λο is the free space wavelength at 25 GHz. These results show that the proposed antenna has potential for 5G millimeter‐wave applications requiring broadband and high gain.

show abstract

“…Highly directional beamforming is needed to transmit common information to multiple users [37]. Therefore, a beam-scanning technology promises high-performance communication to steer the beam to the target with high speed and null the interference for various applications such as human tracking [38], 5G communications [39], and radars [40], as shown in figure 1. Furthermore, a wide-angle scanning capability was obtained using a shared-aperture phased array antenna with a dual-band for mobile communication systems [5].…”

Section: Introductionmentioning

confidence: 99%

A slotted metagratings leaky-wave antenna with theoretical analysis

Al Soad,

Fu,

2023

Phys. Scr.

View full text Add to dashboard Cite

In this contribution, a new slotted metagratings based leaky-wave antenna (MGs LWA) featuring a wide beam-scanning is presented to overcome the limitation of the mutual coupling and the open-stopband effects in traditional LWA. The MGs LWA is comprised of a parallel-plate waveguide with a periodic MGs array etched on the top plate over a dielectric substrate with PEC-backed. An analytical theory is created as a conceptual model for the corresponding equivalent electromagnetic fields produced by slotted MGs, that generate the Z-matrix and S-matrix for a two-port structure from the electric and magnetic fields. Furthermore, an approximate analysis is derived using Green’s function to quantify mutual admittance coupling. This antenna has excellent success due to its ability to achieve a wide beam-scanning range with a high realized gain while still having a narrow beam width in the E-plane. With the utilizing results, the bandwidth range of 64% with continuous beam-scanned of 74° and narrow angular beamwidth up to 11.1° in the E-plane is obtained. Meanwhile, the beam-scanned sensitivity is 5.4°/GHz. The realized gain is up to 16.3 dBi. Finally, the MGs LWA is fabricated to approve the theoretical and simulation results. Thus, a low permittivity and thin substrate are selected to enable perfect beam-scanning for 5 G high-speed mobile communication systems.

show abstract

A Millimeter-Wave Fabry–Perot Cavity Antenna With Unidirectional Beam Scanning Capability for 5G Applications

Cited by 20 publications

References 45 publications

Wideband 5G Antenna Gain Enhancement Using a Compact Single-Layer Millimeter Wave Metamaterial Lens

Wideband 5G Antenna Gain Enhancement Using a Compact Single-Layer Millimeter Wave Metamaterial Lens

Broadband, high gain 2 × 2 subarray and 2 × 8 cavity‐backed antenna arrays for 5G mmWave applications

A slotted metagratings leaky-wave antenna with theoretical analysis

Contact Info

Product

Resources

About