Design of circular patch antennas at mmWave

Hamzah, Siti Zainab Mohd; Malek, Norun Abdul; Mohammad, Sarah Yasmin; Isa, Farah Nadia Mohd; Islam, Md. Rafiqul

doi:10.1109/iccce50029.2021.9467213

Cited by 3 publications

(1 citation statement)

References 6 publications

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“…As the return loss and VSWR increase, the bandwidth and gain decrease with the dielectric constant of the super-substrates. According to Hamzah et al [40] the circular patch antenna is built using a rogers RT5880 with a tangent loss of 0.0009 and 2.2 is the dielectric constant. The purpose of this study was to see how the thickness of the substrate affected the performance of the antenna, i.e.…”

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Performance of circular patch microstrip antenna for adaptive modulation and coding applications

Alsawaf¹,

Ahmad

2022

Bulletin EEI

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The thickness of the substrate is one factor influencing antenna performance. In this paper, the circular patch antenna was designed using rogers RT5880 with dielectric constant of 2.20, loss kept 0.0009 and FR-epoxy with dielectric constant of 4.4, loss kept 0.02. The thickness of the substrate was varied to see how it affected antenna performance, such as return loss. The thickness of the checked substrate is 1.58 mm, which is the standard thickness for rogers RT5880 as well as 2.08 mm, 2.58 mm and 2.85 mm. The simulation work is carried out by ANSYS HFSS software. In this paper, the thicknesses of different substrates are checked while other parameters stay constant and the circular patch radius of the antennas is optimized to achieve a resonant frequency of 3.5 GHz based on the thickness of the above-mentioned substrates used. Return loss, VSWR, gain and half power beam width were found, and the results showed that with the increase in the thickness of the substrate, the gain increases and the value of half power beam width (HPBW) and better results were obtained in the case of RTduroid 5880 and for thicknesses h=2.85 mm

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mentioning

confidence: 99%

Performance of circular patch microstrip antenna for adaptive modulation and coding applications

Alsawaf¹,

Ahmad

2022

Bulletin EEI

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Metal‐loaded slot antenna with flat gain and one‐sided radiation

Qiu,

Meng,

Yang

et al. 2024

Micro & Optical Tech Letters

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A metal‐loaded double‐layer unidirectional radiation slot antenna with flat gain is proposed for millimeter‐wave (mm‐wave) operations. Our presented antenna is constituted of a slot antenna with metal vias, an inner floating metal, a metal line, and ground patch. With the help of inner metal excited by the coupling of the slot antenna, an additional resonance point around 26 GHz could be obtained and the antenna gain is enhanced. To verify the design, the antenna has been fabricated with the prepreg technology. The whole fabricated size is only 0.62 × 0.62λ0² with a thickness of 0.057λ0 (λ0 is the free‐space wavelength at 26 GHz). The measured impedance bandwidth is from 25.1 to 26.55 GHz. Moreover, the proposed antenna obtains a wide flat gain (5.78 ± 0.48 dBi) within the bandwidth and stable one‐sided radiation patterns. The above characteristics show that the proposed antenna is a competitive choice for mm‐wave systems.

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