Investigation of Micromachined Antenna Substrates Operating at 5 GHz for RF Energy Harvesting Applications

Yunus, Noor Hidayah Mohd; Yunas, Jumril; Pawi, Alipah; Rhazali, Zeti Akma; Sampe, Jahariah

doi:10.3390/mi10020146

Cited by 13 publications

(7 citation statements)

References 23 publications

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“…Kepentingan kajian substrat berasaskan bahan RT/ Duroid 5880 adalah sebagai rujukan perbandingan terhadap reka bentuk antena konvensional yang lazimnya dihasilkan melalui teknik fabrikasi Papan Litar Bercetak (PCB). Bahan substrat RT/Duroid yang digunakan adalah mengikut spesifikasi piawaian yang dikeluarkan oleh Perbadanan Rogers, Chandler, AZ, Amerika Syarikat (Yunus et al 2019). Bahan substrat yang dikaji ini adalah bertujuan bagi membuat penilaian parameter pemilihan substrat antena dengan lebih tepat.…”

Section: Simulasi Model Antena Memsunclassified

“…Faktor utama yang menyumbangkan kepada kemajuan antena mikrojalur adalah revolusi pengecilan litar elektronik yang dipengaruhi oleh perkembangan dalam Integrasi Berskala Besar (VLSI) (Yunus et al 2020). Antena mikrojalur berdasarkan proses teknologi fabrikasi Mikro Elektro Mekanik (MEMS) dilihat sebagai suatu kejayaan di dalam kejuruteraan (Thorat & Pande, 2015;Yunus et al 2019). Merujuk kepada kejayaan kejuruteraan teknologi MEMS, maka, kajian ini mencadangkan implementasi reka bentuk antena MEMS di dalam sistem penuai tenaga frekuensi radio (RF) mikro.…”

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Design and performance of radio frequency micro energy harvesting MEMS antenna for low power electronic devices

Sampe¹,

Yunus²,

Yunas³

et al. 2023

jkukm

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Radio Frequency (RF) ambient energy has become the choice as a source of green energy for energy harvesting systems due to the existence of electromagnetic wave signals that are always present in the environment without incurring cost. This RF energy is very low usually less than 190 µW. However, the antenna needs to supply sufficient power to the RF energy harvesting system to power low-power electronic devices. Therefore, the antenna needs to be designed to capture and transfer energy to the RF micro energy harvesting circuit to supply optimal power to the electronic device. The micro-strip antenna design using Micro Electro Mechanical (MEMS) fabrication technology process is the most suitable choice because of its small size, light weight and high performance. This MEMS antenna design uses Computer Simulation TechnologyMicrowave-Studio software(CST-MWS). Comparisons were made for four types of antennas namely silicon surface micromachine, silicon bulk micro-machine with air cavity, glass surface micro-machine and RT/Duroid 5880 as reference. The simulation results show that the glass surface micro-machine antenna is the smallest in size compared to the other three antennas. The return loss of this antenna is also better which is increased by 55.1% and 5.6% compared to silicon surface micro-machine antennas and conventional RT/Duroid antennas respectively. The antenna also has a large bandwidth of 117 MHz, a gain of more than 5 dB and a direction of more than 5 dBi. The glass surface micro-machine antenna has been successfully fabricated using MEMS technology which produces a transparent antenna measuring (L/W) 19 mm x 19 mm. This small sized MEMS antenna is highly sensitive and highly effective for capturing ambient RF signals and is capable of supplying sufficient power to the RF energy harvester system.

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Section: Simulasi Model Antena Memsunclassified

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Design and performance of radio frequency micro energy harvesting MEMS antenna for low power electronic devices

Sampe¹,

Yunus²,

Yunas³

et al. 2023

jkukm

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“…The approximate size of the patch was calculated by using the traditional empirical formulas [29] and then finely tuning the length of the patch in HFSS until the electric field distributed symmetrically on the patch at 0 • source signal (77 GHz sine signal), as shown in Figure 3. The final main parameters of the patch used in this paper were as follows: L 1 = 1260 µm, W 1 = 1540 µm, L 2 = 1260 µm, and W 2 = 320 µm.…”

Section: Design Of the 77 Ghz Series-fed Patch Array Antennamentioning

confidence: 99%

Design and Optimization for 77 GHz Series-Fed Patch Array Antenna Based on Genetic Algorithm

Yang

Zhang

et al. 2020

Sensors

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This paper proposes a method for designing a 77 GHz series-fed patch array antenna. Based on the traditional genetic algorithm, the study explores different array topologies consisting of the same microstrip patches to optimize the design. The main optimization goal is to reduce the maximum sidelobe level (SLL). A 77 GHz series-fed patch array antenna for automotive radar was simulated, fabricated, and measured by employing this method. The antenna length was limited to no longer than 3 cm, and the array only had a single compact series with the radiation patch about 1.54 mm wide. In the genetic algorithm used for optimization, the maximum sidelobe level was set equal to or less than −14 dB. The measurement results show that the gain of the proposed antenna was about 15.6 dBi, E-plane half-power beamwidth was about ±3.8°, maximum sidelobe level was about −14.8 dB, and H-plane half-power beamwidth was about ±30° at 77 GHz. The electromagnetic simulation and the measurement results show that the 77 GHz antenna designed with the proposed method has a better sidelobe suppression by over 4 dB than the traditional one of the same length in this paper.

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“…The demand of modern wireless communication for antennas is improving the size and degree of integrating, rapid speed, high gain as well as wide bandwidth 1,2,3,4 . However, the radiation behaviors of antennas are always enslaved to the tradeoff between miniaturization and high performance 5,6 . Therefore, in order to adapt to the future trend of high-performance antenna technology, it has become the development direction and urgent need of wireless communication technology to study new low loss and high performance conical integrated antenna materials, to explore new antenna elements, and to achieve high precision, miniaturization, integration and multi-function performance.…”

Section: Introductionmentioning

confidence: 99%

Temperature tailored magneto-dielectric properties of Cd-substituting Mg-based ferrite ceramics for miniaturized VHF antennas

Gan

2023

Sixth International Conference on Intelligent Computing, Communication, and Devices (ICCD 2023)

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The microstructure formation and structural regulation of Mg-Cd ferrites (Cd0.15Mg0.85Fe2O4) with 5% Bi2O3 addition at different sintering temperatures (880, 900, 920, and 940 °C) werer invsetigated for application in VHF antennas. The changes including microstructure, phase composition, magnetic and dielectric properties were mainly characterized. It was found that increasing temperature resulted in superior microstructure with accrescent grain size and denser arrangement. XRD patterns revealed normal spinel phase and a secondary phase of Bi compound. Meanwhile, a reinforcement of the magnetization including increased saturation magnetization (from 37.8 to 46.6 emu/g) and dropped coercivity (from 98.2 to 65.9 Oe) were obtained through hysteresis loops. A slight increment of μ' and ' were measured over a broad frequency range in VHF bands. Therefore, excellent magneto-dielectric properties of the proposed ferrites were obtained. In addition, low magnetic losses (tan δμ ~10 -2) and dielectric losses (tan δμ ~10 -3) indicating low power loss in operation. It is foreseeable that these properties of the proposed ferrites would behave well in miniaturized VHF antennas.

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Investigation of Micromachined Antenna Substrates Operating at 5 GHz for RF Energy Harvesting Applications

Cited by 13 publications

References 23 publications

Design and performance of radio frequency micro energy harvesting MEMS antenna for low power electronic devices

Design and performance of radio frequency micro energy harvesting MEMS antenna for low power electronic devices

Design and Optimization for 77 GHz Series-Fed Patch Array Antenna Based on Genetic Algorithm

Temperature tailored magneto-dielectric properties of Cd-substituting Mg-based ferrite ceramics for miniaturized VHF antennas

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