Design Of Multiband Antenna Research Articles

Dual-Band Microstrip Antenna Based on Polarization Conversion Metasurface Structure

A dual-band microstrip patch antenna based on polarization conversion metasurface structure is designed. By etching the complementary split ring resonator (CSRR) on the ground plane, a new resonance frequency is generated. The proposed antenna is obtained through optimizing the structural parameters of CSRR. Compared with the antenna without CSRR, the return loss of the proposed antenna increases by about 40% in the original resonance frequency. The measured results demonstrate good agreement with the simulated ones, verifying the reliability of the antenna. This work provides a way to the design of multi-band antenna.

Design of multiband microstrip patch antenna with bandwidth enhancement for wireless communication system

This research work presents analysis of multiband rectangular microstrip patch antenna for globalsystem for mobile communications at 0.9455GHz and 1.7595GHz and wireless local area Network at 2.4635 GHZ and 5.15 GHz and WiMAX at 3.5745GHz and international mobile telecommunications (IMT) at 4.46 GHz . An antenna is designed using FR4-(epoxy) substrate material with thickness1.6 mm and dielectric constant of 4.3. The microstrip antenna has a patch dimension of 83.33mm×45mm. The antenna has minimum return loss of - 32.563 dB at 0.9455GHz, -27.226 dB at 1.7595 GHz, -29.136 dB at 2.4635GHz, -31.621 dB at 3.5745GHz, -36.531dB at 4.46 GHz, -25.613 at 5.15 GHz. In this antenna designed the maximum gain of 2.20 dB at 0.9455GHz, 3.17 dB at 1.7595 GHz, 5.68 dB at 2.4635GHz , 7.04 dB at 3.5745 GHz, 6.08 dB at 4.46GHz, 5.26 dB at 5.15 GHz. The simulation of the design antenna is done using the software computer simulation technology CST

Design of Multiband MIMO Antenna for 5G Millimeterwave Application

In this paper, design of multiband MIMO antenna by using patch and slot modification is proposed. The MIMO multiband antenna design uses the addition and modification of patch and slot shapes to obtain antenna performance in several frequency bands. In a previous study, the multiband antenna design only used the method of adding patches or slots separately. In this research, we tried to combine the addition of patches and slots together. The antenna design uses the substrate material Rogers RT5880 with a dielectric constant (εr ) 2.2 and height 0.787 mm. The dimensions of the MIMO multiband antenna developed by this study are 42.90 × 14.89 mm. Simulation and measurement results show that this MIMO antenna can work on several millimeter-wave frequency bands, 24 GHz, 28 GHz and 38 GHz. These results prove that the development of design techniques by adding patches and slots to microstrip antennas can produce antennas that work in several frequency bands.

Design of Multi-band Slotted mmWave Antenna for 5G Mobile Applications

In this paper, the design of a compact microstrip patch antenna for the 5G communication is proposed. The proposed antenna has a compact structure of 10×10×0.245 mm3 including the ground plane. The operating frequency for the antenna is in the 30 GHz band, which covers the 5G proposed band regarding the signal speed and data transmission, as well as the high spectral efficiencies. By using CST software, the analysis and performance of the antenna on a FR-4 dielectric substrate has been presented. Simulations show that the reflection coefficient of all operating frequencies is below -14 dB, which met the requirments of future 5G applications. In this work, the geometry of the presented antenna and its related parameters such as S-parameters and radiation pattern plots as well as gain values are presented and discussed in detail.

New Design of Multi-Band PIFA Antenna with Reduced SAR for Mobile and Wireless Applications

In this paper, a new multi-band PIFA antenna covering four frequency bands (GSM, Wifi/Bluetooth, 4G LTE and WIMAX) is presented. The proposed method in this work consists of two main phases. The first step consists in determining the electrical and radiation characteristics of the proposed antenna using HFSS simulator. The second step, the effects of this antenna on the human body is examined and the specific spatial peak absorption rate (SAR) in the human head caused by the use of mobile phone is reduced applying the adaptation technique. For this reason, experiments were carried out based on LC resonator placed between the generator and the load and put in series with the short circuit. After optimizing the values of L and C, theoretical and experimental results were compared and discussed to obtain a good compromise between some constraints: (1) simulation and measurement results are in good agreement on the return loss (RL) (= S11), (2) high bandwidth, (3) high radiation efficiency and (4) limited specific absorption rate.

Employment of mixed mode in single-layer microstrip antenna for ISM/WiMAX/WLAN/4G/Sub 6 GHz 5G mobile communication

ABSTRACTThe design and development of multiband antenna for useful operating bands are the current state-of-the-art research in the field of antenna research. A simple and single-layer printed multiband radiation structure eliminates the packaging complexity of modern communication devices. The present investigation proposes such simple and single-layer multiband antenna for ISM 2.5 GHz/WiMax 3.5 GHz/WLAN 5.2 GHz/ISM 5.8 GHz wireless application for 4G LTE and sub 6 GHz 5G spectrum. The proposed antenna can completely cover the required frequencies with good radiation characteristics at the broadside direction. The design has been carried out using the RT duroid 5870 substrate (ϵr = 2.33, height h = 1.575 mm) for simulation and measurements. In the proposed patch antenna, the slots have been judiciously used to employ mixed modal behaviour which capitulates multiple useful bands with proper bore-sight radiation.

Design and Analysis of Multiband Antenna for Wireless Communication

In this manuscript a compact multiband antenna with dimension 16 × 18 × 0.787 mm3 is presented for multiple wireless applications including Digital Cellular System (1.71–1.88 GHz), Personal Communication System (1.85–1.99Gz), Bluetooth Wireless System (2.402–2.480 GHz), WiMAX (3.30–3.80 GHz), WLAN (5.150–5.825 GHz) and X-Band Downlink System (7.25–7.75 GHz). Radiating patch consist of a glass shape and a rectangular ground plane. Two resonating bands (DCS, PCS and Bluetooth Wireless System) is obtained by inserting stubs whereas remaining bands (WiMAX, WLAN and X-Band Downlink System) is obtained by etching slots on the radiating patch. There is a close agreement between simulated and measured results which is obtained by fabricating prototype.

Design and Analysis of Efficient H-Shaped Multiband Antenna with DGS for Wireless Applications

An efficient H-shaped micro strip multiband antenna is constructed and simulated with slot structure of Split Ring Resonator (SRR) in a ground plane as Defected Ground Structure (DGS) for high frequency applications is proposed. Micro Strip patch antenna is mostly preferred because of its very good radiation properties. Also it is the light weight and low cost device so its usage is very high and its fabrication method is very easy. DGS is used to alter the current path in the ground part of the patch antenna by making this it provides multiband support. The H shape patch antenna with the proper ground plane is normally chosen for increasing the bandwidth of the antenna by providing impedance matching and reduce loss. This type of antenna mostly used in where small size and broad beam width are required. In the simulation VSWR, radiation pattern, gain, return loss were measured using simulation software HFSS.

Design of compact dual-polarized multiband MIMO antenna using near-field for IoT

This paper presents the integration of the unlicensed ultra-wideband (UWB) with the existing bands like the 1.9 GHz long‐term‐evolution (LTE) band and 2.4 GHz industrial scientific and medical (ISM) band to cater for the diverse need of the upcoming internet of things (IoT) technology. The designed compact triband antenna has a dimension of 33 × 18 mm2 (i.e. 0.2λ0 × 0.11λ0, where λ0 is calculated at 1.89 GHz in the free space). This antenna provides high-quality factor (Q) and narrow-band impedance matching at the 1.9 and 2.4 GHz bands with about 2.9% and 4.7% bandwidth respectively, which is sufficient for those IoT applications, which are supposed to support low data rate communication. Further, the triband antenna is found to be effective for IoT as the hosting effect is within the tolerable range. Finally, multiband polarization diversity antenna is designed having a size of only 33 × 57.25 mm2 (0.2λ0 × 0.36λ0) to combat the depolarization effect of signals in the indoor environment. Near-field simulations are carried out to determine the best position/orientation of MIMO elements in order to improve port-to-port isolation and envelope-correlation-coefficient (ECC). The minimum isolation and maximum ECC are found to be 14.2 dB and 0.0471, respectively across all the operating frequency bands.

Design and Fabrication of Multi-band Wearable Fractal Antenna for Telehealth Applications

In this paper, a Multi-band Wearable Fractal Antenna is fabricated for Telehealth Applications. The projected antenna substrate is made from a flexible Jeans textile material. The dielectric properties of this textile can be measured by two different methods. Also, a folded copper tape is used to fabricate the projected wearable antenna. Further, the projected antenna under the bent conditions is studied in details. The specific absorption ratio (SAR) is also studied in this paper. The projected antenna is simulated by CST simulator version 2018 and measured by Agilent8719ES VNA. Finally, there is a large convergence between the measured and the simulation results.

The Design and Fundamentals of Printed Antennas [Book/Software Reviews

This book focuses more on practical antenna design than theoretical analysis and presents a good balance between fundamentals and the printed antenna design. This text concentrates on real-world antenna design and avoids too many formulations and theories. Includes topics that cover fundamentals of printed and microstrip antennas. These principles are presented in a logical way, beginning with an examination of single-element printed antennas and moving on to a system- level review of printed antenna fundamentals, antenna design techniques, and real-world, application-based antenna designs. The book also features information on an overview of antenna design used in smartphones; various compliance requirements of mobile phone antenna designs; frequency and polarization reconfiguration; printed ray antennas, microwave remote sensing; phased array antennas; automobile antenna design, and recent research and development trends in the design, analysis, and synthesis of broadband, multiband, and reconfigurable antenna for modern wireless systems. Taken together, the chapters provide several antenna design projects to demonstrate antenna design steps, antenna physical dimensions, and simulation results. This book begins with a very basic introduction of ultrawideband (UWB) antenna theory and a simple explanation of each type of UWB antenna. This is a perfect starting point for entry-level UWB antenna designers, equipment designers, and operators.

Reconfigurable MIMO Antenna for 5G Communication Applications

The current article presents the design of reconfigurable multiband antenna fed by coplanar waveguide feeding using commercially available pin diodes. Multiple input multiple output structure is proposed to reduce the polarization diversity related issues. The designed antenna operating in the wideband with coverage in 5G band. The proposed model is showing huge bandwidth of almost 10 GHz with peak realized gain of 6.8 dB. Good impedance characteristics in the operating band with Omni directional radiation makes this model suitable for future communication applications.

Novel miniaturized multiband antenna and applications for smart navigation media

This article presents a novel low-cost integrated multiband antenna design customized for navigation media applications. The distinctive feature of the design consists in using a broadband planar dipole with four arms and a miniaturized feeding-point, easy to deploy inside the tracking devices, and cost-effective for supply chain industry. The article first introduces the main challenges and the benefits of miniaturizing antennas for supply-chain and particularly for navigation media system which is the case-study. Further the parametric study and final dimensions of the design and the simulation results are discussed. The proposed design is fabricated and the measurements of the radiation pattern and the return loss are performed proving that the antenna with maximum gain up to 10 dBi and S11 up to −30 dB, exhibits excellent performance for all the frequencies required in the navigation media systems such as 1.6, 1.8, 2.3, 2.4, 2.6, 3.6, and 5.8 GHz. The proposed design was implemented and tested inside a tracking device mounted on a vehicle and compared with existing commercial antennas. This study showed that the proposed antenna is suitable for tracking devices as it is miniaturized for internal integration and it has better 4G and GPS signal detection and low power consumption comparatively with existing commercial antennas.

A Multiband Biconical Log-periodic Antenna for Swarm Communications

In this paper, we present a specific multiband antenna design that addresses the problem of communication with unmanned aerial vehicles (UAVs). We consider a scenario where multiband single-antenna UAV communicates with the rest of the swarm members that are equipped with similar antennas. The key point in the design is that the communication does not require high or low elevation angles in most of the cases. The suggested design has a sufficient degree of freedom to select the desired features for the field pattern while keeping other features such as antenna impedance and gain relatively stable or at least in the acceptable operation region.

Multiple Bandwidth Design of Micro strip Antenna for Future Wireless Communication

We have presented a design of multi-band micro strip antenna which is suitable for operating at a higher frequency and with moderate bandwidth also. Proper selection of dimension, patch, and position of feed is taken into consideration to achieve the target properties of the antenna. Different characteristics of antenna like return loss, VSWR, gain, directivity, and efficiency are verified for different frequencies. The maximum gain of the antenna is found to be more than 3dB at different frequencies and also achieves multiple bandwidths in the direction of max radiation. The proposed structure of the antenna is fabricated, simulated, and tested for obtaining the preferred performance in terms of S11, VSWR, gain and efficiency. The experimental results are verified with simulated results which are in good in accord. Proposed antenna bandwidth is found to be 200MHz to 700 MHz with frequency band from 5.70 GHz to 12.60 GHz.

Design, Simulation and Fabrication of Multiband Antenna using HFSS

Microstrip antennas are popular because of their low profile, light weight and low cost but narrow bandwidth and gain are the main disadvantages of this antenna. In this paper Multiband Octagonal Patch Antenna has been designed by ring slot technique for working in nine different frequencies presented in multi band C-band, X-band, Ku-band, K-band, Ka-band, Q-band and U-bands. Main applications of these bands are used in terrestrial microwave communications. In this research work, the performance of octagonal patch antenna operating at 7 different bands is analyzed. The Design methodology of the proposed research carried in 2 major modules. 1. Design of Single Octagonal Ring Slot antenna, 2. Design of Double Octagonal Ring Slot antenna. In the first design a single octagonal ring slot microstrip patch antenna is developed which resonates at six frequencies of five different frequency bands of C-band, Ku-band, K-band, Q-band and U-bands. In the second design a double octagonal ring slot microstrip patch antenna is developed which resonates at nine frequencies of six different frequency bands of X-band, Ku-band, K-band, Ka-band, Q-band and U-bands. The proposed antenna has been simulated by HFSS and measured by combinational analyzer.

Design and Development of Low-Profile Multi-Band Antenna Fed by SIW Cavity Resonator Using Twin Apertures

AbstractA novel design of compact, linearly polarized and low-profile planar antenna which is electrified by Substrate Integrated Waveguide (SIW) resonator has been developed for multi-band applications of X-band spectrum. Radiating patch has been excited through two closely spaced longitudinal apertures of identical length but non-identical width, incorporated in SIW resonator. These apertures are responsible for multiple operating bands. The achieved fractional bandwidths are 1.29 %, 0.49 % and 1.60 % having resonant frequencies at 10.07 GHz, 10.85 GHz and 11.82 GHz respectively for |S11| ≤ -10 dB. The measured peak gain for first, second and third operating band is 6.54 dB, 6.86 dB and 7.68 dB respectively. The proposed antenna is a highly selective antenna for various applications of X-band microwave spectrum. This band has been particularly selected for military communication because it provides a trade-off between the characteristics (i. e. interference and rain resilience, data rates and remote coverage) of different frequency bands which are particularly suited to the needs of military users. It is very much suitable for secure communication i. e. to deny unauthorized access to sensitive unclassified information and prevent disruption of telecommunication. A comparative analysis of antenna’s parameters has been examined by Ansys HFSS and results are verified through experimental outcomes.

Low-Cost Multi-Objective Optimization of Multiparameter Antenna Structures Based on the l1 Optimization BPNN Surrogate Model

The development of modern wireless communication systems not only requires the antenna to be lightweight, low cost, easy to manufacture and easy to integrate but also imposes requirements on the miniaturization, wideband, and multiband design of the antenna. Therefore, designing an antenna that quickly and effectively meets multiple performance requirements is of great significance. To solve the problem of the large computational cost of traditional multi-objective antenna design methods, this paper proposes a backpropagation neural network surrogate model based on l1 optimization (l1-BPNN). The l1 optimization method tends to punish larger weight values and select smaller weight values so as to preserve a small amount of important weights and reset relatively unimportant weights to zero. By using l1 optimization method, the network mapping structure can be automatically adjusted to achieve the most suitable and compact structure of the surrogate model. Furthermore, for multi-parameter antenna design problems, a fast multi-objective optimization framework is constructed using the proposed l1-BPNN as a surrogate model. The framework is illustrated using a miniaturized multiband antenna design case, and a comparison with previously published methods, as well as numerical validation, is also provided.

Non-conventional Multiband Patch Antenna Design with Filtering Aspect Based on Genetic Algorithm

ABSTRACT This paper addresses the multiband patch antenna design using an improved straightforward method based on genetic algorithm. Starting from a random matrix of squared pixel shapes, the GA optimizes the final design in order to obtain desired specifications, for instance: good impedance matching in required frequency-bands and rejection of undesired bands by integrating appropriate filter. The program is implemented with visual basic script integrated in CST software. The method overcomes the classical design way since the optimized design can be automatically achieved without interfering with designer (independent conception). Validation of the proposed procedure is carried out through simulations and measurements of two patches (dual and tri-band) for WiMAX, WLAN, and X-band applications. Obtained results are in good agreement and demonstrate the effectiveness of the proposed design method.

Fast Multi-Objective Antenna Optimization Based on RBF Neural Network Surrogate Model Optimized by Improved PSO Algorithm

In this paper, a radial basis function neural network (RBFNN) surrogate model optimized by an improved particle swarm optimization (PSO) algorithm is developed to reduce the computation cost of traditional antenna design methods which rely on high-fidelity electromagnetic (EM) simulations. Considering parameters adjustment and update mechanism simultaneously, two modifications are proposed in this improved PSO. First, time-varying learning factors are designed to balance exploration and exploitation ability of particles in the search space. Second, the local best information is added to the updating process of particles except for personal and global best information for better population diversity. The improved PSO is applied to train RBFNN for determining optimal network parameters. As a result, the constructed improved PSO-RBFNN model can be used as a surrogate model for antenna performance prediction with better network generalization capability. By integrating the improved PSO-RBFNN surrogate model with multi-objective evolutionary algorithms (MOEAs), a fast multi-objective antenna optimization framework for multi-parameter antenna structures is then established. Finally, a Pareto-optimal planar miniaturized multiband antenna design is presented, demonstrating that the proposed model provides better prediction performance and considerable computational savings compared to those previously published approaches.