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3 pages, 172 KiB

Open AccessEditorial

Special Issue on New Trends in Telecommunications Engineering

by Jaume Anguera

Appl. Sci. 2023, 13(17), 9892; https://doi.org/10.3390/app13179892 - 31 Aug 2023

Viewed by 1029

Abstract

This collection of research papers explores various aspects of antenna design and high-speed wireless communication, delving into the forefront of technology for modern telecommunications [...] Full article

(This article belongs to the Special Issue New Trends in Telecommunications Engineering)

Research

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14 pages, 9958 KiB

Open AccessCommunication

A Compact Super-Wideband High Bandwidth Dimension Ratio Octagon-Structured Monopole Antenna for Future-Generation Wireless Applications

by Naineri Suguna and Senthil Revathi

Appl. Sci. 2023, 13(8), 5057; https://doi.org/10.3390/app13085057 - 18 Apr 2023

Cited by 3 | Viewed by 1842

Abstract

A high-dimension ratio, octagonal-shaped, super-wideband (SWB) monopole antenna was proposed in this paper. The proposed antenna was composed of an octagonal-structured radiating patch with a flower-shaped slot fed by a linearly tapering microstrip line and a rectangular partial ground fabricated on a Rogers [...] Read more.

A high-dimension ratio, octagonal-shaped, super-wideband (SWB) monopole antenna was proposed in this paper. The proposed antenna was composed of an octagonal-structured radiating patch with a flower-shaped slot fed by a linearly tapering microstrip line and a rectangular partial ground fabricated on a Rogers 5880 dielectric substrate, with an overall dimension of 14 × 16 × 0.787 mm³. The designed antenna exhibits SWB characteristics over the frequency range of 3.71 to 337.88 GHz at |S11| ≤ −10 dB, VSWR < 2, a bandwidth ratio (BR) of 91.07:1, and a very high BDR of 6057.27. The proposed SWB antenna was designed, simulated, and analyzed using Ansys high-frequency structural simulator (HFSS). The simulated and measured findings have good confirmability, making them ideal for future-generation mobile networks, due to their strong radiation properties, compactness, and extremely wide bandwidth. Full article

(This article belongs to the Special Issue New Trends in Telecommunications Engineering)

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25 pages, 11181 KiB

Open AccessArticle

An Elliptical-Shaped Dual-Band UWB Notch Antenna for Wireless Applications

by Om Prakash Kumar, Tanweer Ali, Pramod Kumar, Pradeep Kumar and Jaume Anguera

Appl. Sci. 2023, 13(3), 1310; https://doi.org/10.3390/app13031310 - 18 Jan 2023

Cited by 15 | Viewed by 2262

Abstract

This paper discusses an elliptical ultrawideband (UWB) antenna and a dual-band UWB notch antenna. To achieve a UWB bandwidth, two corner cuts are etched into the rectangular slot on the partial ground plane. An inverted-U-shaped and conductor-shaped resonator are utilized to achieve dual-band [...] Read more.

This paper discusses an elliptical ultrawideband (UWB) antenna and a dual-band UWB notch antenna. To achieve a UWB bandwidth, two corner cuts are etched into the rectangular slot on the partial ground plane. An inverted-U-shaped and conductor-shaped resonator are utilized to achieve dual-band notch characteristics on a partial ground plane. The suggested antenna has an overall dimension of

24 \times 32 {mm}^{2}

. The suggested UWB antenna has a gain of 4.9 dB, a bandwidth of 2.5–11 GHz, a linear phase response, a group delay of less than 1 ns, and a steady radiation pattern. The suggested UWB notch rejects WLAN and ITU bands from 5.2–5.7 GHz and 7.2–8.5 GHz, respectively, with an impedance bandwidth of 2.5–11 GHz. The UWB notch antenna features a linear phase, a group delay of less than 1 ns, and a stable radiation pattern. Full article

(This article belongs to the Special Issue New Trends in Telecommunications Engineering)

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11 pages, 3218 KiB

Open AccessArticle

A High-Gain and Wideband MIMO Antenna for 5G mm-Wave-Based IoT Communication Networks

by Daniyal Ali Sehrai, Muhammad Asif, Jalal Khan, Mujeeb Abdullah, Wahab Ali Shah, Sattam Alotaibi and Nasim Ullah

Appl. Sci. 2022, 12(19), 9530; https://doi.org/10.3390/app12199530 - 22 Sep 2022

Cited by 17 | Viewed by 2480

Abstract

In this paper, an antenna with a multiple-input, multiple-output (MIMO) configuration is demonstrated for mm-wave 5G-based Internet of Things (IoT) applications. The two antenna elements are arranged next to each other to form a two-port antenna system such that significant field decorrelation is [...] Read more.

In this paper, an antenna with a multiple-input, multiple-output (MIMO) configuration is demonstrated for mm-wave 5G-based Internet of Things (IoT) applications. The two antenna elements are arranged next to each other to form a two-port antenna system such that significant field decorrelation is achieved. Moreover, a dielectric layer is backed by an eventual multiport system to amend and analyze the radiation characteristics. The overall size of the MIMO configuration is 14 mm × 20 mm, and the operation bandwidth achieves ranges from 16.7 to 25.4 GHz, considering the −10 dB criterion with a maximum isolation of more than −30 dB within the operating band. The peak gain offered by the antenna system is nearly 5.48 dB, and incorporating a dielectric layer provides an increase in the gain value to 8.47 dB. Within the operating band, more than 80% total efficiency is observed, and analysis shows several MIMO performance metrics with favorable characteristics. The compactness of the proposed design with high isolation, improved gain, and wideband features make it a suitable candidate for mm-wave-based 5G applications. Full article

(This article belongs to the Special Issue New Trends in Telecommunications Engineering)

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14 pages, 4292 KiB

Open AccessArticle

Novel MIMO Antenna System for Ultra Wideband Applications

by Abdullah G. Alharbi, Umair Rafique, Shakir Ullah, Salahuddin Khan, Syed Muzahir Abbas, Esraa Mousa Ali, Mohammad Alibakhshikenari and Mariana Dalarsson

Appl. Sci. 2022, 12(7), 3684; https://doi.org/10.3390/app12073684 - 6 Apr 2022

Cited by 26 | Viewed by 3319

Abstract

The design of a 4 × 4 MIMO antenna for UWB communication systems is presented in this study. The single antenna element is comprised of a fractal circular ring structure backed by a modified partial ground plane having dimensions of 30 × 30 [...] Read more.

The design of a 4 × 4 MIMO antenna for UWB communication systems is presented in this study. The single antenna element is comprised of a fractal circular ring structure backed by a modified partial ground plane having dimensions of 30 × 30 mm

^{2}

. The single antenna element has a wide impedance bandwidth of 9.33 GHz and operates from 2.67 GHz to 12 GHz. Furthermore, the gain of a single antenna element increases as the frequency increases, with a peak realized gain and antenna efficiency of 5 dBi and >75%, respectively. For MIMO applications, a 4 × 4 array is designed and analyzed. The antenna elements are positioned in a plus-shaped configuration to provide pattern as well as polarization diversity. It is worth mentioning that good isolation characteristics are achieved without the utilization of any isolation enhancement network. The proposed MIMO antenna was fabricated and tested, and the results show that it provides UWB response from 2.77 GHz to over 12 GHz. The isolation between the antenna elements is more than 15 dB. Based on performance attributes, it can be said that the proposed design is suitable for UWB MIMO applications. Full article

(This article belongs to the Special Issue New Trends in Telecommunications Engineering)

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18 pages, 4394 KiB

Open AccessArticle

Burst Channel Error Reduction Based on Interleaving for Efficient High-Speed Wireless Communication

by Fatma H. El-Fouly, Rabie A. Ramadan, Fathi E. Abd El-Samie, Mnaouer Kachout, Abdullah J. Alzahrani and Jalawi Sulaiman Alshudukhi

Appl. Sci. 2022, 12(7), 3500; https://doi.org/10.3390/app12073500 - 30 Mar 2022

Cited by 5 | Viewed by 2793

Abstract

Recently, the demand for reliable and high-speed wireless communication has rapidly increased. Orthogonal frequency division multiplexing (OFDM) is a modulation scheme that is the newest competitor against other modulation schemes used for this purpose. OFDM is mostly used for wireless data transfer, although [...] Read more.

Recently, the demand for reliable and high-speed wireless communication has rapidly increased. Orthogonal frequency division multiplexing (OFDM) is a modulation scheme that is the newest competitor against other modulation schemes used for this purpose. OFDM is mostly used for wireless data transfer, although it may also be used for cable and fiber optic connections. However, in many applications, OFDM suffers from burst errors and high bit error rates. This paper presents the utilization of a helical interleaver with OFDM systems to efficiently handle burst channel errors and allow for Bit Error Rate (BER) reduction. The paper also presents a new interleaver, FRF, the initial letters of the authors’ names, for the same purpose. This newly proposed interleaver summarizes our previous experience with many recent interleavers. Fast Fourier transform OFDM (FFT-OFDM) and Discrete Wavelet Transform OFDM (DWT-OFDM) systems are used to test the efficiency of the suggested scheme in terms of burst channel error removal and BER reduction. Finally, the general complexity of the FRF interleaver is different from that of the helical interleaver in terms of hardware requirements. The performance of the proposed scheme was studied over different channel models. The obtained simulation results show a noticeable performance improvement over the conventional FFT-OFDM and the FFT-OFDM systems with the helical interleaver. Finally, the disadvantage of the proposed FRF interleaver is that it is more complex than the helical interleaver. Full article

(This article belongs to the Special Issue New Trends in Telecommunications Engineering)

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16 pages, 8088 KiB

Open AccessArticle

Maple-Leaf Shaped Broadband Optical Nano-Antenna with Hybrid Plasmonic Feed for Nano-Photonic Applications

by Inzamam Ahmad, Shakir Ullah, Jalal ud din, Sadiq Ullah, Waseem Ullah, Usman Habib, Salahuddin Khan and Jaume Anguera

Appl. Sci. 2021, 11(19), 8893; https://doi.org/10.3390/app11198893 - 24 Sep 2021

Cited by 11 | Viewed by 3065

Abstract

This article presents a broadband optical nano-antenna, which covers a broader range of optical communication wavelengths (666 to 6000 nm), used in nano-photonic applications. The proposed design is modeled and analyzed to obtain a satisfactory gain of up to 11.4 dBi for a [...] Read more.

This article presents a broadband optical nano-antenna, which covers a broader range of optical communication wavelengths (666 to 6000 nm), used in nano-photonic applications. The proposed design is modeled and analyzed to obtain a satisfactory gain of up to 11.4 dBi for a single element-based antenna. The unique feature of the proposed antenna is the hybrid plasmonic waveguide-based feed, which receives the optical signal from the planar waveguide and redirects the signal out of the plane. The proposed antenna provides highly directional radiation properties, which makes it a suitable candidate for inter- and intra-chip optical communications and sensing applications. Moreover, an extension of the work is performed for an array configuration of the order 2 × 1 and 64 × 1, to increase the gain and directionality. Therefore, this shows that it can be equally useful for optical energy harvesting applications with a significant gain up to 26.8 dBi. Full article

(This article belongs to the Special Issue New Trends in Telecommunications Engineering)

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12 pages, 460 KiB

Open AccessArticle

Optimization of a Coherent Dual-Beam Array Feed Network for Aperiodic Concentric Ring Antennas

by Armando Arce, Enrique Stevens-Navarro, Ulises Pineda-Rico, Marco Cardenas-Juarez, Francisco R. Castillo-Soria and David H. Covarrubias

Appl. Sci. 2021, 11(3), 1111; https://doi.org/10.3390/app11031111 - 26 Jan 2021

Cited by 2 | Viewed by 1774

Abstract

A dual-beam coherent feeding system design approach with a non-uniform layout on a concentric ring array is described and synthesized. In this case, the feeding system is based on a reconfigurable topology composed of a set of alternated power dividers and combiners, providing [...] Read more.

A dual-beam coherent feeding system design approach with a non-uniform layout on a concentric ring array is described and synthesized. In this case, the feeding system is based on a reconfigurable topology composed of a set of alternated power dividers and combiners, providing coherent in-phase outputs. Thus, in this paper, a two-beam architecture based on a coherent feeding system formed by a set of intercalated input signals feeding each circular ring in a non-uniform antenna array with multi-beam shaping and steering features is analyzed. The task of optimizing the aperiodic layout on the shared aperture based on the radii of the circular rings is realized by the differential evolution method. Numerical experiments grounded in antenna synthesis validate the capabilities and improved performance of the proposed dual-beam configuration with a non-uniform layout in contrast with its uniform counterpart, with enhanced performance on average by up to −6.1 dB for sidelobe level and 3.5 dB for directivity. Additionally, the results show a significantly less complex two-beam feeding network in contrast with the case of a typical electronically scanned array—in this proposal, each direction of maximum radiation is conformed and scanned with approximately half of the control inputs. Full article

(This article belongs to the Special Issue New Trends in Telecommunications Engineering)

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21 pages, 5473 KiB

Open AccessArticle

Design of SWB Antenna with Triple Band Notch Characteristics for Multipurpose Wireless Applications

by Warsha Balani, Mrinal Sarvagya, Tanweer Ali, Ajit Samasgikar, Saumya Das, Pradeep Kumar and Jaume Anguera

Appl. Sci. 2021, 11(2), 711; https://doi.org/10.3390/app11020711 - 13 Jan 2021

Cited by 14 | Viewed by 3469

Abstract

A compact concentric structured monopole antenna for super wide band (SWB) applications with triple notch band characteristics is designed and experimentally validated. The antenna covers an immense impedance bandwidth (1.6–47.5 GHz) with sharp triple notch bands at 1.8–2.2 GHz, 4–7.2 GHz, and 9.8–10.4 [...] Read more.

A compact concentric structured monopole antenna for super wide band (SWB) applications with triple notch band characteristics is designed and experimentally validated. The antenna covers an immense impedance bandwidth (1.6–47.5 GHz) with sharp triple notch bands at 1.8–2.2 GHz, 4–7.2 GHz, and 9.8–10.4 GHz to eliminate interference from co-existing advanced wireless services (AWS), C bands, and X bands, respectively. By loading an E-shaped stub connected at the top of the patch and by etching a split elliptical slot at the lower end of the radiating patch, the band rejection characteristics from 1.8–2.2 GHz for the AWS and 4–7.2 GHz for the C band are achieved, respectively. Further, by making use of a C-shaped resonator near the feed line, band rejection from 9.8–10.4 GHz for the X band is obtained. By varying the parameters of the antenna, the notch bands are controlled independently over a wide range of frequencies. The antenna provides good radiation characteristics, constant group delay response, and better gain over the pass band. The experimental results indicate that the designed antenna offers a remarkable reduction in gain and high variation in group delay over the stop bands. To characterize the wideband property and linear phase response of the designed antenna, its time-domain performance is extensively described and evaluated, which assure pulse transmission with minimum distortion. Full article

(This article belongs to the Special Issue New Trends in Telecommunications Engineering)

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16 pages, 7425 KiB

Open AccessArticle

A Dual-Band Modified Franklin mm-Wave Antenna for 5G Wireless Applications

by Arjun Surendran, Aravind B, Tanweer Ali, Om Prakash Kumar, Pradeep Kumar and Jaume Anguera

Appl. Sci. 2021, 11(2), 693; https://doi.org/10.3390/app11020693 - 12 Jan 2021

Cited by 7 | Viewed by 2864

Abstract

Franklin array antennas are considered as one of the most competitive candidates for millimeter-wave (mmW) 5G applications due to their compact size, simple geometry and high gain. This paper describes a microstrip Franklin antenna array for fifth generation (5G) wireless applications. The proposed [...] Read more.

Franklin array antennas are considered as one of the most competitive candidates for millimeter-wave (mmW) 5G applications due to their compact size, simple geometry and high gain. This paper describes a microstrip Franklin antenna array for fifth generation (5G) wireless applications. The proposed modified Franklin array is based on a collinear array structure with the objective of achieving broad bandwidth, high directivity, and dual-band operation at 22.7 and 34.9 GHz. The designed antenna consists of a 3 × 3 array patch element as the radiating part and a 3 × 3 slotted ground plane operating at a multiband resonance in the mmW range. The dimensions of the patch antennas are designed based on λ/2 of the second resonant frequency. The designed antenna shows dual band operation with a total impedance bandwidth ranging from 21.5 to 24.3 GHz (fractional bandwidth of 12.2%) at the first band and from 33.9 to 36 GHz (fractional bandwidth of 6%) at the second band in simulation. In measurement, the impedance bandwidth ranges from 21.5 to 24.5 GHz (fractional bandwidth of 13%) at the first band and from 34.3 to 36.2 GHz (fractional bandwidth of 5.3%) at the second band, respectively. The performance of the antenna is analyzed by parametric analysis by modifying various parameters of the antenna. All the necessary simulations are carried out using HFSS v.14.0. Full article

(This article belongs to the Special Issue New Trends in Telecommunications Engineering)

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