Improvement of low-profile microstrip antenna performance by hexagonal-shaped SRR structure with DNG metamaterial characteristic as UWB application

Saktioto, Saktioto; Soerbakti, Yan; Syahputra, Romi Fadli; Gamal, M. D. H.; Irawan, Dedi; Putra, Emansa Hasri; Darwis, Rizadi Sasmita; Okfalisa,

doi:10.1016/j.aej.2021.09.048

Cited by 26 publications

(8 citation statements)

References 37 publications

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“…Parameter S data is displayed in the form of absolute value and phase for each type of spectrum. The two data are then transformed into complex numbers with the following equation [2]:…”

Section: Design and Characterizationmentioning

confidence: 99%

“…The characteristics of metamaterials also have other relative constants (permeability) from the comparison between the magnetic response of the material by the magnetic field [8]. The permittivity and permeability can be calculated using Equations ( 3) and (4) of the following NRW model [2]:…”

Section: Design and Characterizationmentioning

confidence: 99%

“…The metamaterial medium constant has an influence on the refraction of EM wave propagation [9]. The refractive index can be calculated using Equation (5) of the following NRW model [2]:…”

Section: Design and Characterizationmentioning

confidence: 99%

“…The use of metamaterials as an advanced technological breakthrough has a very high and broad potential because the material and its structure can be updated [1]. Pure metamaterial structures such as split ring resonator (SRR) have been reported by Saktioto et al, where the application of hexagonal SRR metamaterials with FR-4 substrate (flame retardant with woven glassreinforced epoxy gresin, ε = 4.3) can improve the sensor performance of low profile microstrip antennas with a large frequency width of 8 GHz [2]. However, pure metamaterials in their current application are still under the requirements of modern technology with high quality.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of Semiconductor-Based SRR Metamaterials as Sensors

Soerbakti,

Saktioto,

Sulistyo Rini

et al. 2024

J. Phys.: Conf. Ser.

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The development of hybrid sensor media is needed to achieve more efficient, sensitive, and accurate performance. Efforts to modify the structure of conventional metamaterials are carried out by integrating semiconductor materials which aim to improve the characteristics of optical properties, electrical properties, and sensitivity as sensors. This study aims to analyze and investigate changes in the optical properties of semiconductor-based metamaterials. The research was conducted through simulation and numerical methods to design and characterize the SRR metamaterial geometry, with a modified Nicolson-Ross-Weir approach, especially the optical parameters of refractive index. The single-cell square pattern SRR metamaterial geometry with a ring radius of 2.2 – 2.8 mm on quartz glass substrate designed at a smaller wavelength based on a maximum frequency source of 9 GHz. The square SRR metamaterial is integrated with several semiconductor materials such as silicon (Si), gallium arsenide (GaAs), and aluminum nitride (AlN). Changes in radius size cause a redshift with respect to radius enlargement. The increasing ring radius of SRR causes a higher resonance depth of the refractive index. Combining hybrid semiconductors with metamaterial results in more negative metamaterial properties as the refractive index becomes larger and negative. The addition of semiconductor material to the metamaterial substrate causes a negative refractive index to shift to a lower frequency.

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“…Parameter S data is displayed in the form of absolute value and phase for each type of spectrum. The two data are then transformed into complex numbers with the following equation [2]:…”

Section: Design and Characterizationmentioning

confidence: 99%

Section: Design and Characterizationmentioning

confidence: 99%

“…The metamaterial medium constant has an influence on the refraction of EM wave propagation [9]. The refractive index can be calculated using Equation (5) of the following NRW model [2]:…”

Section: Design and Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optimization of Semiconductor-Based SRR Metamaterials as Sensors

Soerbakti,

Saktioto,

Sulistyo Rini

et al. 2024

J. Phys.: Conf. Ser.

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“…Microstrip patch antenna (MPA) is considered a great revolution technique due to its specifications as well as flexible designs that can be achieved [1]- [3]. Conventional MPA has two disadvantages which are the narrow bandwidth and low gain.…”

Section: Introductionmentioning

confidence: 99%

Compact low profile 5.8 GHz MPA for on-body applications

2023

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A compact microstrip patch antenna (MPA) with a T shape monopole technique is designed, simulated, and measured. By using fire retardant material (FR-4) as a substrate with a low profile, the proposed antenna is designed and simulated to be used for on-body biomedical applications. A center frequency of 5.78 is achieved with a gain of 11.78 dB and a matching impedance of -47.47 dB. A 1.48 W/Kg (10 gm) as a specific absorption rate (SAR) is achieved and 29.69 dB front to back ratio with a bandwidth of 3.376 GHz. The antenna was examined in free space as well as on-body using CST-MW software. The proposed antenna is fabricated and examined. Finally, a comparison is done among simulated results, measured results, and the dual-band dual-mode antenna. The proposed antenna overcomes the latter work in terms of small size, high matching impedance, high front to back ratio, and operating bandwidth.

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A novel UWB flexible antenna with dual notch bands for wearable biomedical devices

Geyikoglu

2023

Analog Integr Circ Sig Process

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This study presents a novel UWB flexible antenna with dual band-notched design for wearable biomedical devices. The proposed antenna is designed on Kapton Polyimide-based flexible substrate. This includes a CPW fed circular and triangle structure. The dual notched bands are realized by using two triangular-shaped spiral slots defected ground structures. The first notched band (2.4–3.7 GHz) is generated for rejecting WLAN and WiMAX, the second notch (5.15–5.725 GHz) is generated for rejecting HyperLAN/2. The designed UWB antenna has approximately a bandwith of 159% (2.05–14 GHz) in simulation. Thus, the designed UWB antenna meets FCC standards. The antenna has an omnidirectional radiation pattern with a maximum gain of 12.7 dB in 8.4 GHz. The proposed antenna is fabricated with the low-cost airbrush printed technique. In this technique, a higher gain value is obtained by controlling the thickness of the conductive layer. Effect of flexibility on the antenna performance is tested for different configurations in the simulation and anechoic chamber environments. According to the results obtained, the overall performance is not affected except for the shift in frequency. Since the antenna has a UWB structure, the frequency shift that occurs in bending is at a tolerable level. The proposed UWB antenna is suitable for wearable biomedical devices, with a high UWB performance.

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Improvement of low-profile microstrip antenna performance by hexagonal-shaped SRR structure with DNG metamaterial characteristic as UWB application

Cited by 26 publications

References 37 publications

Optimization of Semiconductor-Based SRR Metamaterials as Sensors

Optimization of Semiconductor-Based SRR Metamaterials as Sensors

Compact low profile 5.8 GHz MPA for on-body applications

A novel UWB flexible antenna with dual notch bands for wearable biomedical devices

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