A Metamaterial-Based Compact Planar Monopole Antenna for Wi-Fi and UWB Applications

Khurshid, Adnan; Dong, Jian; Shi, Ronghua

doi:10.3390/s19245426

Cited by 11 publications

(11 citation statements)

References 28 publications

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“…Antennas have a major effect on the performance of UWB communication systems, therefore, the design of an antenna must meet its typical requirements, such as impedance matching, radiation stability, compact size, and low cost, which is quite challenging to achieve. The patch antennas are good candidates for UWB applications because of their lightweight, planar geometry, and ease of integration with other electronic components [2,3].…”

Section: Introductionmentioning

confidence: 99%

A Rectangular Notch-Band UWB Antenna with Controllable Notched Bandwidth and Centre Frequency

Abbas

Hussain

Jeong

et al. 2020

Sensors

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This paper presents the design and realization of a compact ultra-wideband (UWB) antenna with a rectangular notch wireless area network (WLAN) band that has controllable notched bandwidth and center frequency. The UWB characteristics of the antenna are achieved by truncating the lower ends of the rectangular microstrip patch, and the notch characteristics are obtained by using electromagnetic bandgap (EBG) structures. EBGs consist of two rectangular metallic conductors loaded on the back of the radiator, which is connected to the patch by shorting pins. A rectangular notch at the WLAN band with high selectivity is realized by tuning the individual resonant frequencies of the EBGs and merging them. Furthermore, the results show that the bandwidth and frequency of the rectangular notch band could be controlled according to the on-demand rejection band applications. In the demonstration, the rectangular notch band was shifted to X-band satellite communication by tuning the EBG parameters. The simulated and measured results show that the proposed antenna has an operational bandwidth from 3.1–12.5 GHz for |S11| < -10 with a rectangular notch band from 5–6 GHz, thus rejecting WLAN band signals. The antenna also has additional advantages: the overall size of the compact antenna is 16 × 25 × 1.52 mm3 and it has stable gain and radiation patterns.

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Section: Introductionmentioning

confidence: 99%

A Rectangular Notch-Band UWB Antenna with Controllable Notched Bandwidth and Centre Frequency

Abbas

Hussain

Jeong

et al. 2020

Sensors

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“…Many techniques have been used to improve the impedance bandwidth of printed planar monopoles [ 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 ]. Considering the evolution from the simple straight monopole analyzed in the previous sub-section, these techniques can be grouped into the following four categories: Change the geometry of the monopole.…”

Section: Monopole Antenna Elementmentioning

confidence: 99%

“…Many ground plane shapes have been used [ 18 , 24 , 26 , 27 , 28 , 29 , 30 , 31 ] as well as different types of feeding [ 18 , 26 , 28 , 31 , 32 , 33 , 34 , 35 ]. Moreover, different types of materials have been employed, such as substrate or superstrate layers [ 12 , 22 , 36 , 37 , 38 ] and/or active devices (mainly varactors [ 30 ], MEMS [ 33 ], and PIN diodes [ 39 ]). Many references combine two [ 13 , 14 , 18 , 25 , 27 , 36 , 39 ], three [ 19 , 22 , 24 , 26 , 28 , 29 , 30 , 31 , 33 , 34 , 37 , 38 ], or even four categories of change [ 12 , 35 ] to obtain a very wide bandwidth.…”

Section: Monopole Antenna Elementmentioning

confidence: 99%

Wideband, Wearable, Printed Monopole Antenna System for Integration into an Electromagnetic Radiation Evaluation Device

Falcão

Felício

Peixeiro

2023

Sensors

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This paper describes the design steps carried out to prove the concept of a wideband monopole antenna system to be used in a wearable device conceived for the evaluation of electromagnetic field radiation. Such a device is envisaged to be integrated into protective vests worn by professional users in their working space environment as part of intelligent multi-risk protection. Initially, the main characteristics of a simple straight monopole are reviewed to serve as a reference. A modified octagonal monopole antenna element is introduced, and a two dual-linearly polarized configuration of such monopoles is designed, fabricated, and tested to be used in the frequency range of 0.7–3.5 GHz. The expected radiation characteristics (input reflection coefficient and isolation between vertically and horizontally polarized ports) are confirmed experimentally. The effects of a thick lossy foam substrate layer used to mitigate the presence of the metal shield, employed in the vest lining as a Faraday cage protection, are analyzed both by simulation and experimentally. Finally, electromagnetic simulations are carried out to confirm that a system of five dual-linearly polarized monopole elements located in the chest, shoulders, back, and helmet of the user can provide an adequate estimation of the incident electromagnetic field radiation.

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“…For this purpose, a comprehensive state-of-the-art study was first carried out considering not only planar antennas covering both the 2.4 GHz and UWB frequency bands [10], [11], [12], [13], [14], [15], [16], [17], [18], [19], [20], [21], [22], [23], [24], [25], [26], [27], [28], [29], [30], [31], [32], [33], [34], [35], [36], [37], [38] but also recently developed compact multiband designs [39], [40], [41], [42], [43] since the intended notch band in the proposed design forms a triband 2.4/3.5/5.5-11 GHz antenna (Table 1). Note that due to the difference in antenna material and dimensions, radiating properties were excluded for a fair comparison.…”

Section: Introductionmentioning

confidence: 99%

Compact Slit-Loaded ACS-Fed Monopole Antenna for Bluetooth and UWB Systems With WLAN Band-Stop Capability

2023

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A compact asymmetric coplanar strip (ACS)-fed monopole antenna is presented, which operates within the Bluetooth and UWB frequency bands with the capability to simultaneously reject the lower WLAN interfering band. The antenna consists of an inverted right triangle patch monopole loaded by open-ended L-shaped slits not only to produce the additional 2.4 GHz passband to the UWB design but also to achieve stopband characteristics around 5.2 GHz. The conceptual equivalent circuit model as well as characteristic mode analyses are carried out in the design evolution process. The proposed antenna has an overall size of only 20 mm × 10 mm, having the smallest area among the so far developed designs, which can be easily integrated within any wireless gadgets. A prototype is fabricated and measured to validate the design, demonstrating the predicted behavior fairly achieved by full-wave analysis. The antenna −10 dB operating bandwidth ranges from 2.38 to 2.42 GHz and from 3.35 to 11 GHz while rejecting from 4.69 to 5.2 GHz. Unlike the unwanted stopband, where the radiation characteristics are adequately deteriorated, the proposed antenna fairly provides stable omni-directional radiation patterns in the H-plane, and has an average efficiency (gain) of 87.3% (2.6 dBi) in the desired passband. As far as the antenna transient behavior is concerned, an adequate measured (simulated) system fidelity factor of 0.7 (0.68) is achieved for the transmission of impulse-type UWB signals in the face-to-face configuration.

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A Metamaterial-Based Compact Planar Monopole Antenna for Wi-Fi and UWB Applications

Cited by 11 publications

References 28 publications

A Rectangular Notch-Band UWB Antenna with Controllable Notched Bandwidth and Centre Frequency

A Rectangular Notch-Band UWB Antenna with Controllable Notched Bandwidth and Centre Frequency

Wideband, Wearable, Printed Monopole Antenna System for Integration into an Electromagnetic Radiation Evaluation Device

Compact Slit-Loaded ACS-Fed Monopole Antenna for Bluetooth and UWB Systems With WLAN Band-Stop Capability

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