A compact four states radiation-pattern reconfigurable monopole antenna for Sub-6 GHz IoT applications

Boukarkar, Abdelheq; Rachdi, Satouh; Amine, Mrabet Mohamed; Sami, Baguigui; Khalil, Adda Benziane

doi:10.1016/j.aeue.2022.154467

Cited by 9 publications

(4 citation statements)

References 24 publications

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“…Because of the principles of spectrum access and cognitive radio [21,22], reconfigurable and adjustable devices offer the crucial hardware necessary for effective spectrum management and utilization. In the literature, researchers have proposed different reconfigurable antennae for different purposes such as pattern reconfigurability, polarization reconfigurability, and frequency reconfigurability [23][24][25][26][27][28][29][30]. The reconfigurability can be achieved by using diodes, micro-electro-mechanical system (MEMS) switches, and different RF switches [31,32].…”

Section: Introductionmentioning

confidence: 99%

An Electronically Reconfigurable Highly Selective Stop-Band Ultra-Wideband Antenna Applying Electromagnetic Bandgaps and Positive-Intrinsic-Negative Diodes

Abbas,

Hussain,

Sufian

et al. 2024

Micromachines

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In this article, an ultra-wideband (UWB) antenna featuring two reconfigurable quasi-perfect stop bands at WLAN (5.25–5.75 GHz) and lower 5G (3.4–3.8 GHz) utilizing electromagnetic bandgaps (EBGs) and positive-intrinsic-negative (P-I-N) diodes is proposed. A pair of EBG structures are applied to generate sharp notch bands in the targeted frequency spectrum. Each EBG creates a traditional notch, while two regular notches are combined to make a quasi-perfect, sharp, notch band. Four P-I-N diodes are engraved into the EBG structures to enable notch band reconfigurability. By switching the operational condition of the four diodes, the UWB antenna can dynamically adjust its notching characteristics to enhance its adaptability to various communication standards and applications. The antenna can be reconfigured as a UWB (3–11.6 GHz) without any notch band, a UWB with a single sharp notch (either at WLAN or 5G), or a UWB with two quasi-perfect notch bands. Moreover, the antenna’s notch bands can also be switched from a traditional notch to a quasi-perfect notch and vice versa. To confirm the validity of the simulated outcomes, the proposed reconfigurable UWB antenna is fabricated and measured. The experimental findings are aligned closely with simulation results, and the antenna offers notch band reconfigurability. The antenna shows a consistently favorable radiation pattern and gain. The dimension of the presented antenna is 20 × 27 × 1.52 mm3 (0.45 λc × 0.33 λc × 0.025 λc, where λc is the wavelength in free space).

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Section: Introductionmentioning

confidence: 99%

An Electronically Reconfigurable Highly Selective Stop-Band Ultra-Wideband Antenna Applying Electromagnetic Bandgaps and Positive-Intrinsic-Negative Diodes

Abbas,

Hussain,

Sufian

et al. 2024

Micromachines

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“…Under normal circumstances, pattern reconfigurable antennas can be implemented in two ways. One method of control is to adjust the internal structure of the antenna through switches to achieve different radiation patterns [15][16][17][18][19][20]. For example, in reference [15], by changing the ON/OFF state of PIN diodes on the driven dipoles, a planar reconfigurable Sensors 2024, 24, 4136 2 of 14 antenna with one omnidirectional beam and two directional beams is achieved.…”

Section: Introductionmentioning

confidence: 99%

A Radiation-Pattern Reconfigurable Antenna Array for Vehicular Communications

Gao,

Sun

2024

Sensors

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This paper presents a low-profile reconfigurable antenna array capable of five radiation-pattern modes for vehicular communication applications. The antenna array consists of four antenna elements, each containing four square patches. Exciting one of the square patches generates a broadside radiation. A square parasitic patch is added at the rear of the excited patch, and two square parasitic patches are placed at the front. By optimizing the design of these parasitic patches, including the treatment of center slotting and addition of shorting pins, the antenna element achieves an end-fire beam with a certain tilt angle. On this basis, a reconfigurable feeding network is designed with 1:1 and 1:4 output modes. By connecting the reconfigurable feeding network to the four antenna elements and altering the on/off states of the PIN diodes in the feeding network, a reconfigurable antenna with four end-fire beams and one omnidirectional beam in its radiation pattern is realized. Measurement results demonstrate an excellent impedance bandwidth, radiation pattern, and gain performance in all modes. The four end-fire and one omnidirectional radiation characteristics make it highly suitable for vehicular communication applications.

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“…A chip antenna patch size of 10 × 10 × 0.8 mm 3 embedded on FR4 dielectric substrates, besides a PCB of 30 mm × 30 mm, provides operation at 2.45:9 GHz and a maximum peak gain of 4.5 dBi. In 15 , a reconfigurable pattern monopole antenna including two pin diodes with an overall size of 32 × 59 × 0.8 mm 3 is considered. Its operating frequency band is 3.36 to 3.6 GHz, with realized gain and efficiency of 2.13: 4.93 dBi and 62% to 82%, respectively.…”

Section: Introductionmentioning

confidence: 99%

Engineering planar antenna using geometry arrangements for wireless communications and satellite applications

El-Hakim,

Mohamed

2023

Sci Rep

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A triple-band microstrip patch antenna designed for the IEEE 802.16e WiMAX, IEEE 802.11a WLAN, C-band downlink communications, and Ku-band radar recent applications is suggested in this article. The planned antenna operates at 2.45, 6, and 14 GHz resonant frequencies. The antenna fulfilled triple-band physical characteristics covering industrial, scientific, and medical (ISM) bands between (2.1–2.8) GHz; (5.6–6.5) GHz for wireless local area network (WLAN) or ultra-wideband (UWB) services; and 12.7–16 GHz for future two-way 5G:6G either broadcasting or mobile satellite communications. To achieve better return loss performance, parametric studies are carried out using Microwave Studio (CST MWS). The proposed antenna is designed on the FR4 as a hosting medium of total size 46 × 38 × 1.6 mm3, combined with a planar transmission line (T.L.) feed and defected ground structure (DGS). The simulated antenna’s input reflection coefficient (S11) results and the far-field measurements show good agreement. The fabricated prototype achieves peak gain values of 2.8, 3.8, and 4.7 dBi, respectively, and bidirectional radiation characteristics. A comparative study with other recent publications is implemented to validate the consistency of the design.

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A compact four states radiation-pattern reconfigurable monopole antenna for Sub-6 GHz IoT applications

Cited by 9 publications

References 24 publications

An Electronically Reconfigurable Highly Selective Stop-Band Ultra-Wideband Antenna Applying Electromagnetic Bandgaps and Positive-Intrinsic-Negative Diodes

An Electronically Reconfigurable Highly Selective Stop-Band Ultra-Wideband Antenna Applying Electromagnetic Bandgaps and Positive-Intrinsic-Negative Diodes

A Radiation-Pattern Reconfigurable Antenna Array for Vehicular Communications

Engineering planar antenna using geometry arrangements for wireless communications and satellite applications

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