Compact Dual-Band Suspended Microstrip Slot Antenna with an Antipodal Parasitic Element for WLAN Applications

Afrough, Mehrdad; Fakharian, Mohammad M.; Tavakol-Hamedani, Farzad

doi:10.1007/s11277-015-2409-z

Cited by 10 publications

(3 citation statements)

References 12 publications

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“…Both antennas work at the same resonance frequency range of 2.4 GHz. The MTM antenna exhibits S 11 of less than -10 dB in a bandwidth ranging from 2400 to 2510 MHz, which entirely covers WLAN frequency band allocated from 2400 MHz to 2480 MHz [19].Compared to normal antenna, the absolute value of S 11 of MTM antenna of 35 dB is enhanced significantly. Moreover, the bandwidth of MTM antenna of 110 MHz is much higher than that of normal antenna of 60 MHz.…”

Section: Simulation Results and Discussionmentioning

confidence: 97%

A Miniaturization of Microstrip Antenna Using Negative Permitivity Metamaterial Based on CSRR-Loaded Groundfor Wlan Applications

Tung

Lam

Hòa

2016

JST

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A microstrip antenna using negative permittivity metamaterial based on complementary split ring resonator (CSRR)-loaded ground has been investigated in order to miniaturize the size and improve the antenna characteristics. The antennas are designed on FR4 material and simulated results are provided by HFSS software. The metamaterial antenna is reduced 77 % the antenna size compared to the normal microstrip antenna. Furthermore, compared with the normal microstrip antenna, the antenna characteristics of the metamaterial antenna are improved significantly. The proposed metamaterial antenna achieves the antenna resonate at 2.45 GHz, the gain of higher than 6.5 dB and the bandwidth of 110 MHz through the whole WLAN band. The obtained results indicate that the proposed antenna is a good candidate for WLAN applications.

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Section: Simulation Results and Discussionmentioning

confidence: 97%

A Miniaturization of Microstrip Antenna Using Negative Permitivity Metamaterial Based on CSRR-Loaded Groundfor Wlan Applications

Tung

Lam

Hòa

2016

JST

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“…), thermal (60µW/ ) and vibration ( 200µW/ ) can provide a solution to the energy demand [1]. Most of the other sources, except for RF energy, are reliant on the surrounding environment, which makes RF energy harvesting technology more useful in important application areas such as environmental monitoring, health, and defense [2][3]. While Nicola Tesla [3] had previously introduced the idea of transforming electromagnetic energy into electrical energy, it was early 1990s that the notion of RF energy harvesting was introduced.…”

Section: Introductionmentioning

confidence: 99%

UWB Microstrip Patch Antenna Design for Energy Harvesting Applications

Kanboz

Palandöken

2023

IJANSER

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RF energy harvesting systems, which are the receiver part of Wireless Power Transfer (WPT), have gained significant development in recent years. For maximum energy acquisition over a wide frequency range, such as to provide power to small handheld devices like cell phones, tablets, smart watches, and other smart devices, wideband and compact antennas are desired. RF systems are expected to cover different frequency bands, such as 2.4 GHz, 5.1 GHz, 5.8 GHz (Bluetooth/Wi-Fi), 2.3 GHz, 2.5 GHz, 3.5 GHz, 5 GHz (WiMAX), for energy harvesting. For such an RF harvesting system, the antenna is desired to have a wide bandwidth, good gain, and an omnidirectional radiation pattern. Energy harvesting devices refer to designs that integrate production and storage. For instance, radio frequency energy sources contain a large amount of electromagnetic energy in the environment, and with RF energy harvesting systems, a portion of this electromagnetic energy can be collected and converted into usable DC voltage. Microstrip patch antennas are very good alternatives for energy harvesting applications because they are cost-effective, compact in size and weight, flat in structure, and highly repeatable. This paper presents a microstrip patch antenna with a bandwidth of 3.9 GHz in the 3.4 to 7.3 GHz range for UWB applications. The antenna design has a gain value of 3.28dBi at the numerically calculated resonance frequency of 4.9 GHz and generally covers frequencies used for electronic device communication such as Wi-Fi 5 GHz and WiMAX. The proposed antenna design has gain values that are allowed to be used for RF energy harvesting applications.

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“…Most other energy sources are predominantly dependent on the environment, except for RF energy, which makes this technique more fruitful in various critical applications, including smart monitoring systems, healthcare, household appliances, protection, etc. [2,3] Wireless energy harvesting (WEH) and wireless power transfer (WPT) have gained significant attention as well as perceived immense development over the last few years [4][5][6]. The rectifying circuit is a key device for converting RF to DC energy with high-level conversion efficiency for radiative and inductive wireless power transmissions, respectively [7].…”

Section: Introductionmentioning

confidence: 99%

Design of a Highly Efficient Wideband Multi-Frequency Ambient RF Energy Harvester

Roy

Tiang

Roslee

et al. 2022

Sensors

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For low input radio frequency (RF) power from −35 to 5 dBm, a novel quad-band RF energy harvester (RFEH) with an improved impedance matching network (IMN) is proposed to overcome the poor conversion efficiency and limited RF power range of the ambient environment. In this research, an RF spectral survey was performed in the semi-urban region of Malaysia, and using these results, a multi-frequency highly sensitive RF energy harvester was designed to harvest energy from available frequency bands within the 0.8 GHz to 2.6 GHz frequency range. Firstly, a new IMN is implemented to improve the rectifying circuit’s efficiency in ambient conditions. Secondly, a self-complementary log-periodic higher bandwidth antenna is proposed. Finally, the design and manufacture of the proposed RF harvester’s prototype are carried out and tested to realize its output in the desired frequency bands. For an accumulative −15 dBm input RF power that is uniformly universal across the four radio frequency bands, the harvester’s calculated dc rectification efficiency is about 35 percent and reaches 52 percent at −20 dBm. Measurement in an ambient RF setting shows that the proposed harvester is able to harvest dc energy at −20 dBm up to 0.678 V.

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Compact Dual-Band Suspended Microstrip Slot Antenna with an Antipodal Parasitic Element for WLAN Applications

Cited by 10 publications

References 12 publications

A Miniaturization of Microstrip Antenna Using Negative Permitivity Metamaterial Based on CSRR-Loaded Groundfor Wlan Applications

A Miniaturization of Microstrip Antenna Using Negative Permitivity Metamaterial Based on CSRR-Loaded Groundfor Wlan Applications

UWB Microstrip Patch Antenna Design for Energy Harvesting Applications

Design of a Highly Efficient Wideband Multi-Frequency Ambient RF Energy Harvester

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