Antenna For Wireless Communications Research Articles

A Multifunctional Array System Based on Adjustable-Phase Antenna for Wireless Communications

In this work, an innovative method for controlling the current distribution of the radiating patch by adjusting the input phase is investigated to achieve both pattern and polarization reconfigurable characteristics for the multifunction. A compact and low-profile antenna with four fed ports is designed to implement the proposed method, which can operate linear, right-hand circular polarization (RHCP) and left-hand circular polarization (LHCP) with different beam directions in the operating band from 4.0 to 5.0 GHz. Even more, a four-by-four passive planar array is designed and fabricated based on this antenna element, which can scan the coverage of ±70° with low gain fluctuation and low sidelobe with dual-polarization. Meanwhile, it can realize the wide-angle scanning capability up to ±60° with low sidelobe with RHCP and LHCP. More important, the dual- and triple-beam with different directions can be obtained by the proposed array. Good agreement has been shown between measured and simulated results. Therefore, the proposed antenna is a good solution for wireless communication systems because of its simple-configuration, multifunction, and beamforming capability.

Design and Investigation of a Double-Damru (Pellet Drum)-Shaped CPW-Fed Microstrip Patch Antenna for 5G Wireless Communications

Design and Investigation of a Double-Damru (Pellet Drum)-Shaped CPW-Fed Microstrip Patch Antenna for 5G Wireless Communications

Dual‐band crescent‐shaped slot patch antenna for wireless communications and IoT applications

AbstractThe investigation of two half circular patch (HCP) antenna with defected ground structure to operate dual bands is presented in this study for wireless communications. The crescent slots etched on the HCPs are proposed to operate the dual bands of below −10 dB reflection coefficient, with the impedance bandwidth of the first band being 740 MHz (3.01–3.75 GHz) and of the second band being 7120 MHz (6.74–13.86 GHz). The proposed HCP antenna was resonates of 3.36 and 12.17 GHz with −33.9 and −35.47 dB reflection coefficients. This antenna produces a maximum gain of 5.46 and 6.61 dB for these resonating frequencies, respectively. The simulation and measured radiation pattern results are also presented for proposed HCP antenna and it operates for wireless communications and internet of things applications.

A broad axial ratio bandwidth and wide angle coverage circularly polarized monopole antenna for wireless communication

AbstractA uniquely shaped layout of a wideband circularly polarized (CP) printed monopole antenna is planned in this article. The proposed antenna comprises a 7‐shaped slotted radiating patch, tapered feed line, and modified partial ground plane. Multiple parasitic strips are employed at optimum positions on the ground and radiating planes to improve the axial ratio bandwidth (ARBW). The electrical dimension of the designed antenna is . The confirmed −10 dB impedance bandwidth (IBW) and 3 dB ARBW are 11.86 GHz (3.14–15 GHz), 130% and 6.32 GHz (4.04–10.36 GHz), 87.78% along with coverage angle. The proposed antenna is suitable for different applications in communication systems such as WLAN, WiMAX, FM CW altimeter, and satellite for C‐ and X‐ band.

A Dual-band T-slot Microstrip Patch Antenna for Wireless Communication and Radar Application

This paper presents a proposed a Dual-Band T-Slot Microstrip Patch Antenna for sub-6GHz 5G application. The proposed antenna is designed to operate at two frequency bands of 5.923 GHz and 7.444 GHz respectively. The size and feed technique are determined by design formulas. The simulation results show a good return loss (reflection coefficient) of -33.696 dB and -18.464 dB respectively which is way below the benchmark of 10dB. The gain and VSWR results are 5.45dB and 1.049 at 5.933GHz; 4.158dB and 1.272 at 7.443GHz respectively. The CST software is used for the simulation.

ICEAA International Conference on Electromagnetics in Advanced Applications IEEE APWC IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications

ICEAA International Conference on Electromagnetics in Advanced Applications IEEE APWC IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications

Preface

International Conference on Recent Advances in Wireless Communications & Emerging Technologies RAWCET-2022 This International Conference RAWCET 2022 is organized by Department of Electronics and Communication Engineering, Koneru Lakshmaiah Educational Foundation, India in association with IETE, IEEE communication, MTT student chapter and communication System Research Group (CSRG). The Conference aims to provide a platform to learn and share knowledge on Advanced Wireless Communication, RF and Modern antenna applications. It provides a forum for exchange of ideas and authoritative views by Research Community from Industry& Academia from National and International fraternity. Outstanding keynote speakers and well-known leading scientists and experts drawn across the globe shared their knowledge. We endeavour to bring individuals from various fields, and to make a setting in which they can collaborate synergistically, and ideally make new logical outcomes.The conference leads to the conclusions that 21st century communications throw light on the challenges to system designers, manufacturers and researches in their field related to ingenious Wireless Communication, Space Technologies, Data Communication, RF, Antennas, Signal Processing and Robotic Communication. The Wireless meeting offers key insights into cutting-edge applications from global experts, start-ups, and the winners of World’s major innovation competitions for space applications. Over and above all, this conference opened new avenues and paved the pathways for the future generations by introducing innovative techniques and paradigms to face the challenges and transform into ‘opportunistic communications.We are sure that this conference will definitely trigger lively discussions and present researchers to new developments. Finally, we appreciated the experienced expertise and young researchers for bringing innovative ideas to our conference.List of Organizing Committee Members are available in this pdf.

A Noval High Gain Compact Antenna for 5G Wireless Communication

A Noval High Gain Compact Antenna for 5G Wireless Communication

A Wideband High-Gain Dielectric Horn-Lens Antenna for Wireless Communications and UWB Applications

A wideband high-gain dielectric horn-lens antenna (DHLA) for wireless communications and ultra-wideband (UWB) applications, featuring 122% fractional bandwidth, is presented. The antenna, consisting of a dielectric horn equipped with a spherical-axicon dielectric lens that increases and equalizes the gain within the operating band, is placed on a PCB featuring a wideband eight-shaped slot fed by a tapered microstrip line employed to excite the radiating system. The lens, integrated within the body of the dielectric horn, has the property of focusing the RF energy near its vertex on an extended frequency band, thus ensuring compact size, excellent field coupling with the antenna excitation system, and a significant increase of antenna gain. The antenna operates in the 3–12.4 GHz frequency range with relatively flat group delay, making it suitable for operating with narrowband, broadband, and impulsive UWB signals. The antenna can work properly without or with a metal reflector useful to enhance gain (up to 19 dBi), improve the front-to-back ratio, and reduce the impact of the antenna characteristics from the installation site. CST Studio Suite, implementing a full-wave locally conformal finite integration technique (FIT), was employed to design and characterize the antenna. The antenna characteristics estimated numerically were found to be in good agreement with the experimental results performed on an antenna prototype.

Design and analysis several band antenna for wireless communication

This article describes the construction of a dual-band planar monopole antenna. A microstrip patch antenna with a feedline impedance of 50 ohm and a patch composed of G-shaped and inverted L-shaped strips is used to make the suggested antenna ultra wideband for frequencies ranging from 3.1 to 10.6 GHz. In order to design the antennas, we need to know the dimensions 40x40x1.6 mm3 and the thickness of the ground plane (0.035 mm) (5.2 GHz). There is a method of altering the present distribution by introducing slots. the proposed worldwide interoperability for microwave access (WiMAX) and wireless local area network (WLAN) bands, with a peak gain of 5.2% and an omnidirectional radiation pattern, suitable for ultra wide band (UWB) were shown to be viable.

2D Titanium carbide printed flexible ultrawideband monopole antenna for wireless communications

Flexible titanium carbide (Ti3C2) antenna offers a breakthrough in the penetration of information communications for the spread of Internet of Things (IoT) applications. Current configurations are constrained to multi-layer complicated designs due to the limited conformal integration of the dielectric substrate and additive-free Ti3C2 inks. Here, we report the flexible ultrawideband Ti3C2 monopole antenna by combining strategies of interfacial modification and advanced extrusion printing technology. The polydopamine, as molecular glue nano-binder, contributes the tight adhesion interactions between Ti3C2 film and commercial circuit boards for high spatial uniformity and mechanical flexibility. The bandwidth and center frequency of Ti3C2 antenna can be well maintained and the gain differences fluctuate within ±0.2 dBi at the low frequency range after the bent antenna returns to the flat state, which conquers the traditional inelastic Cu antenna. It also achieves the demo instance for the fluent and stable real-time wireless transmission in bending states.

Penta-band rectangular slot antenna for multi-function wireless communication with linear and circular polarizations

AbstractThis paper presents a multi-band rectangular slot antenna, which can be used in Beidou navigation system, 4G, WLAN and 5G system. The proposed antenna adopts a single feeding line, generating circular polarization for satellite navigation, and linear polarization for mobile communication systems. The proposed antenna consists of three c-type resonators and three rectangular loop slots. A c-type resonator and a rectangular loop slot work together to produce a usable frequency band. Multiple frequency bands can be generated by increasing the number of c-type resonator and rectangular loop slots. It is found that the c-type resonator changes the current distribution on the antenna surface, making the axial ratio less than 3 dB in the low frequency bands. Eventually, five operation frequency bands are realized. Experimentally, it is verified that the impedance bandwidths of each frequency band are 11.8% (1.12–1.26 GHz), 15.4% (1.5–1.75 GHz), 11.9% (2.36–2.66 GHz), 19.7% (3.15–3.84 GHz) and 2.6% (4.47–4.59 GHz), respectively. The measured 3 dB axial ratio bandwidths are 20 MHz at 1.2 and 1.56 GHz, fully covering BDS B1 and B2 bands. The measured gains are 3, 3.59, 4.07, 4.2 and 4.35 dBi, respectively.

Analysis and design of trapezoidal shape CSRR rectangular patch antenna for wireless communications

AbstractA monopole rectangular shape patch antenna (RSPA) with trapezoidal shape complementary split ring resonator (CSRR) is designed for wireless communication application is presented in this paper. The trapezoidal shape CSRR is considered to obtain circular polarization and rectangular slit is considered to operate antenna for triple frequencies at 1.88, 4.17, and 6.73 GHz, respectively. The axial ratio of 1.25, 1.05, 1.28 dB is observed and a maximum gain of 6.29 dBi at 1.88 GHz frequency is produced. The RSPA model is designed for mobile and fixed satellite application.

A compact dual-sense circularly polarized SIW textile antenna for body-centric wireless communication

In this communication, a dual-sense circularly polarized textile antenna that operates at the centre frequency of 5.8 GHz is presented for body-centric wireless communication. The proposed textile antenna is realized using a substrate integrated waveguide (SIW) cavity. Circular polarization is achieved by exciting two orthogonal quarter mode apertures in 900 phase differences. A metallic via is employed to control the magnetic field coupling between the two orthogonal quarter mode apertures. The feed point and dimensions of two-quarter mode apertures can be changed to realize both left-hand and right-hand circular polarization. The proposed textile antenna has a 4.8 % impedance bandwidth covering from 5.62 to 5.90 GHz. Moreover, the textile antenna has a 2.9 % 3 dB axial ratio bandwidth covering from 5.725 to 5.875 GHz frequency bandwidth. The textile antenna has exhibited good reflection characteristics when bent on the surface of a cylindrical structure. The textile antenna has a lesser than 1.27 W/Kg SAR value in the proximity of the human phantom model for a 1 W source and also has exhibited a minimum peak gain of 5 dBi, making it conducive for integration with body-centric wireless communication.

Design of T-Shaped Microstrip Patch Antenna for Wireless Communication

In this paper, we have designed a T-Shaped ridged Rectangular Microstrip patch wideband. antenna for wireless communication applications. This project designed a planar T-Slotted Microstrip patch antenna for millimeter wave wireless communication at 55GHz.CST SOFTWARE was used to analyze the antenna’s performance, which showed a low return loss of -19.13dB, a VSWR of 1.248, and a gain of 6.821dB. The antenna’s compact size and compatibility with wireless technology make it a promising choice for modern communication systems.

Diversity Order and Measure of MIMO Antennas in Single-User, Multiuser, and Massive MIMO Wireless Communications

In this letter, the diversity order (DO) and the diversity measure (DM) of multiple-input multiple-output (MIMO) antennas in generic single-user, multiuser, and massive MIMO wireless communications are calculated for several practical case studies. These performance metrics are calculated from the antenna correlation coefficient (ACC) matrix. The DO is calculated from the rank of the ACC matrix, and the DM is obtained from the trace and Frobenius norm of the ACC matrix. Numerical results are provided. In particular, it is shown that though the DM is always less than the DO, it incorporates the effect of antenna correlation on the diversity gain in a better way.

Low-profile shared Shinkansen antenna for overhead line voltage detection and wireless communication

This study significantly reduces the height of a shared antenna for overhead line voltage detection and wireless VHF band communication installed on the roof of the Shinkansen vehicle. We propose an antenna configuration employing an inverted-F antenna utilizing a wide-shaped branching element with a notched tip that can maintain antenna performance, even if the height of the antenna is significantly lower. It was proven that the notch at the tip improves average gain in the horizontal plane by 2.3dB and 3.9dB at two operating frequencies, respectively. In addition, the deterioration of the overhead line voltage detection sensitivity was only 30% even though the antenna height was lowered by approximately 72%. To put this antenna to practical use, it is necessary to verify the usage environment and vehicle mounting conditions.

Compact dual-band circularly polarized antenna for wireless communications

P-shaped dual-band circularly polarized (CP) antenna for wireless communications with right-hand circular polarization (RHCP) and left-hand circular polarization (LHCP) is presented in this article. Optimized electrical volume of the proposed structure is 0.46? 0 ? 0.46? 0 ? 0.02? 0 mm3 at 4.4 GHz resonant frequency. The measured - 10 dB impedance bandwidths are 50.7% and 5.7% for (3.37-5.60 GHz) and (10.82-11.46 GHz) resonating bands at frequencies 4.4 GHz and 11.4 GHz respectively. The measured 3 dB impedance axial-ratio bandwidths for (4.65-5.13 GHz) and (11.21-11.52 GHz) bands are 9.7% and 2.7%. Agreement of simulation results with measured results ensure the excellent circular polarization at frequencies 4.96 GHz and 11.4 GHz.

Design and simulation of a low return loss UWB CPW-fed patch antenna for mobile wireless communications

With the recent development of wireless communication systems and the 5G spectrum, mobile broadband technology (MBB) has been thriving. In this contribution, the design of an Ultra Wide Band T-slotted rectangular microstrip patch antenna is presented which is suitable for high data rate applications. The antenna is fed using a coplanar waveguide and is designed for two central operating frequencies, the lower resonant frequency at 3.6 GHz, an internationally recognized standard for 5G wireless mobile communications and a higher frequency at 6.8 GHz, which is part of the new wifi-6E standards. All data of the characteristic parameters have been obtained by using the Computer Simulation Technology Microwave Studio Student suite 2021 (CST MWS).

A Freely Extendable Closely Packed Dual-band MIMO Antenna for 5G Wireless Communication

A Freely Extendable Closely Packed Dual-band MIMO Antenna for 5G Wireless Communication