A Dual-Band High-Gain Resonant Cavity Antenna with a Single Layer Superstrate

2015 ◽  
Vol 63 (5) ◽  
pp. 2320-2325 ◽  
Author(s):  
Fanji Meng ◽  
Satish K. Sharma
Keyword(s):  
Resonant Cavity ◽  
Single Layer ◽  
High Gain ◽  
Dual Band

scholarly journals Miniature Dual-Band Substrate Integrated Waveguide Slotted Antenna Array for Millimeter-Wave 5G Applications

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Fei-Peng Lai ◽  
Lu-Wu Chang ◽  
Yen-Sheng Chen
Keyword(s):  
Antenna Array ◽  
Millimeter Wave ◽  
Communication Systems ◽  
Single Layer ◽  
High Gain ◽  
Dual Band ◽  
Substrate Integrated Waveguide ◽  
Suitable Candidate ◽  
Fifth Generation ◽  
Half Power

A compact substrate integrated waveguide (SIW) antenna array that operates at 28 GHz and 38 GHz is proposed for fifth generation (5G) applications. The proposed array consists of four SIW cavities fabricated on one single layer of substrate. Each cavity implements a rhombic slot and a triangular-split-ring slot, resonating on TE101 and TE102 modes at 28 GHz and 38 GHz, respectively. In comparison with dual-band SIW antennas in the literature, the proposed configuration depicts a miniature footprint (28.7 × 30.8 mm2) without stacking substrates. To excite the four cavities with equal power, a broadband power divider that supports the propagation of TE10 mode is designed. Accordingly, the impedance bandwidths are 26.6–28.3 GHz and 36.8–38.9 GHz. The measured realized peak gain over the lower and higher bands is 9.3–10.9 dBi and 8.7–12.1 dBi, respectively. The measured half-power beam widths (HPBWs) at 28 GHz and 38 GHz are 20.7° and 15.0°, respectively. Considering these characteristics, including dual bands, high gain, narrow beam widths, miniaturization, and single layer, the proposed antenna array is a suitable candidate for millimeter-wave 5G communication systems with the flexibility in switching operating frequency bands against channel quality variations.

A Dual-Band High-Gain Resonant Cavity Antenna With Orthogonal Polarizations

2011 ◽  
Vol 10 ◽  
pp. 1220-1223 ◽  
Author(s):  
Hamid Moghadas ◽  
Mojgan Daneshmand ◽  
Pedram Mousavi
Keyword(s):  
Resonant Cavity ◽  
High Gain ◽  
Dual Band

scholarly journals Experimental Realization of Sub-THz Circularly Polarized Antenna Based on Metasurface Superstrate at 300 GHz

Materials ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 4796
Author(s):  
Basem Aqlan ◽  
Mohamed Himdi ◽  
Hamsakutty Vettikalladi ◽  
Laurent Le-Coq
Keyword(s):  
Low Cost ◽  
Resonant Cavity ◽  
Single Layer ◽  
High Gain ◽  
Metallic Structure ◽  
Experimental Realization ◽  
Circularly Polarized ◽  
Left Handed ◽  
Low Profile ◽  
Polarization Convertor

This communication presents a low-profile fully metallic high gain circularly polarized resonant cavity antenna, with a novel single-layer metasurface as superstrate operating at 300 GHz. The unit cell of the metallic metasurface layer consists of perforated grids of hexagonal and octagonal-shaped radiating apertures. The metasurface superstrate layer acts as a polarization convertor from linear-to-circular, which provides left-handed circularly polarized (LHCP) radiation. For simplicity and less design difficulty, a low cost laser cutting brass technology is proposed to design the antenna at sub-terahertz. The proposed circularly polarized resonant cavity antenna prototype has a low-profile planar metallic structure of volume 2.6λ0×2.6λ0×1.24λ0. Experimental results validate the design concept. The antenna yields a measured LHCP gain of 16.2 dBic with a directivity of 16.7 dBic at 302 GHz. This proposed circularly polarized resonant cavity antenna finds potential application in 6G sub-terahertz wireless communications.

scholarly journals A Stripline-Based Planar Wideband Feed for High-Gain Antennas with Partially Reflecting Superstructure

Micromachines ◽  
2019 ◽  
Vol 10 (5) ◽  
pp. 308 ◽  
Author(s):  
Affan Baba ◽  
Raheel Hashmi ◽  
Mohsen Asadnia ◽  
Ladislau Matekovits ◽  
Karu Esselle
Keyword(s):  
Ground Plane ◽  
Resonant Cavity ◽  
Single Layer ◽  
High Gain ◽  
Air Gap ◽  
Experimental Results ◽  
Back Side ◽  
Dielectric Slab ◽  
Metal Cladding ◽  
Feeding Structure

This paper presents a new planar feeding structure for wideband resonant-cavity antennas (RCAs). The feeding structure consists of two stacked dielectric slabs with an air-gap in between. A U-shaped slot, etched in the top metal-cladding over the upper dielectric slab, is fed by a planar stripline printed on the back side of the dielectric slab. The lower dielectric slab backed by a ground plane, is used to reduce back radiation. To validate the wideband performance of the new structure, in an RCA configuration, it was integrated with a wideband all-dielectric single-layer partially reflecting superstructure (PRS) with a transverse permittivity gradient (TPG). The single-layer RCA fed by the U-slot feeding structure demonstrated a peak directivity of 18.5 dBi with a 3 dB directivity bandwidth of 32%. An RCA prototype was fabricated and experimental results are presented.

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